Wednesday, October 31, 2018

Flow Measurement Device Symbols

Flow measurement device symbols are used to signify the type and direction of fluids flowing through a pipe. These illustrations are commonly referred to as Piping and Instrumentation Diagram (P&DI) symbols and may vary slightly between organizations.

Flow measurement devices (orifice plate, pitot tube, averaging pitot tubes, flume, weir, turbine, target, positive displacement, rotameter, vortex, Coriolis, ultrasonic, magnetic, wedge, v-cone, flow nozzle, venturi, and generic.)
Fflowing left-to-right:

Flow measurement device symbols
Flow measurement device symbols
Click for larger view.

Wednesday, October 17, 2018

Process Control Experts Serving Minnesota, North Dakota, South Dakota, and Wisconsin

Process Control Experts

Arjay Automation takes great pride in providing customers in the industrial, municipal, and electrical markets of Minnesota, North Dakota, South Dakota, and Wisconsin with premium solutions to their process instrumentation, automation, and control needs. The team at Arjay Automation works tirelessly to uphold their reputation of experience, integrity and dependability.  Arjay continuously demonstrates a commitment to their customer’s success through delivering the highest quality products and services available.

https://arjaynet.com
(800) 761-1749

Saturday, September 29, 2018

NIVELCO EasyTREK SP-500 Series Level Transmitters

The newest generation EasyTREK SP-500 series level transmitters are based on NIVELCO’s 35 years of experience with ultrasonic level measurement. The IP68 rated units have their transducer and processing electronics incorporated in one single housing. The new EasyTREK transmitters utilize HART® 7 communication so they can be used in multidrop systems connected to MultiCONT process controller/display, or to a PC with the help of the UNICOMM HART®-USB modem or similar. The transmitters can be remotely programmed also with Handheld Field Communicator, and can be connected wirelessly to a PC with the SAT-504 Bluetooth® HART® modem.


The ultrasonic level metering technology is based on the principle of measuring the time required for the ultrasound pulses to cover the distance from the sensor to the level to be measured and back. The echoes bounced back from the surface of the medium to be measured reach the sensor surface after the time of flight of the ultrasonic impulse. The time of flight of the reflected signal is measured and processed by the electronics, and then this is converted to distance, level, volume or flow proportional data using the customizable tank dimensions or the pre-programmed flume / weir parameters.

Download the NIVELCO EasyTREK SP-500 Series Level Transmitter brochure here.

For more information, contact Arjay Automation by visiting https://arjaynet.com or by calling (800) 761-1749.

Tuesday, September 25, 2018

Yokogawa's YS1000 Series: The Perfect Alternative to the Obsolete Siemens 353 Controller - Details Here

The Yokogawa YS1000 Series is the perfect alternative to the now obsolete Siemens/Moore 353. The video below provides details as to how and why. The video is composed of a series of presentation slides - if you need more time to focus and a single item, hit the pause button.

(800) 761-1749

Friday, September 14, 2018

7 Steps for Selecting the Right Industrial Gas Detection Solution

Abstracted from the Honeywell Analytics article titled "How to Select the Right Gas Detection Solution" by Don Galman


Step 1 - Know Your Site Risks

7 Steps for Selecting the Right Industrial Gas Detection SolutionBefore beginning to consider gas detection equipment, a risk assessment needs to be conducted. Any company employing staff has the obligation to conduct risk assessments to identify potential hazards and these can include potential gas, vapor or Oxygen deficiency risks. If gas hazards are identified, gas detection is applicable as a risk reduction method.

Step 2 - Know and Identify the Primary Objective

Depending on the processes being undertaken and the gases being detected, remote or off-site alarm notification plus event data logging/reporting may also be required for Health and Safety management records. Another factor impacting on the need for enhanced reporting functions might be regulatory compliance or a condition of insurance.

Step 3 - Be Thorough and Ask the Right Questions

Having identified the primary objective, the suitable equipment is selected by asking a number of key questions. These fall into three broad categories:

  • The gases to be detected and where they may come from
  • The location and environmental conditions where detection is to take place
  • The ease of use for operators and routine servicing personnel

Step 4 - Identify the Gases to be Detected and Where They May Come From

The gases to be detected should be identified by the risk assessment, however experienced gas detection equipment manufacturers and their approved distributors are often able to help in this process, based on their experience of similar applications. However, it is important to remember that it is the end-user’s responsibility to identify all potential hazards.

It is also essential to identify the potential source of a gas release as this helps determine the number and location of detectors required for a fixed gas detection system.

Step 5 - Understand the Operating Environment

The performance, accuracy and reliability of any gas detection equipment will be affected by the environmental conditions it is subjected to. Temperature, humidity and pressure levels at the location all have a direct bearing on the type of equipment that should be selected. Additional factors such as potential variations resulting from a production process itself, diurnal/nocturnal fluctuations and seasonal changes may also affect the type of device which is suitable.

Step 6 - Understand How the Product Functions

The next area of consideration relates to additional product functionality. Aspects like wiring configuration are important, especially when retro-fitting into an existing application. If the apparatus is being integrated into a separate safety system, certain communication protocols may also be required such as HART®, Lonworks or Modbus®.

Consideration will also need to be given regarding the requirement for local displays on transmitter units and local configuration of the unit and gas displays may also be a useful addition.

Step 7 - Ease of Use

Routine maintenance is another important consideration. Some gases and vapors can be detected with a number of different sensing technologies, e.g. Hydrocarbon gases with catalytic beads or Non-dispersive Infrared NDIR. Catalytic beads do not provide fail-to-safety operation and therefore can require a high frequency of routine maintenance, however NDIR based solutions tend to have a higher initial purchase price, but may require less routine maintenance. In-house resource to undertake such routine maintenance needs to be identified and in the absence of such a resource, budgeting for third party maintenance is an important factor in selecting the right equipment.

Summary

There are many gas detection products on the market that might appear to be the same, but a closer inspection of specification, functionality and features reveals major differences in what products can do and the potential value they can offer. Similarly, individual applications are also unique in their respective designs, needs and processes undertaken.

For more information on industrial gas detection contact Arjay Automation by calling (800) 761-1749 or by visiting https://arjaynet.com

Friday, August 24, 2018

A Great Solution for the Discontinued Moore / Siemens 353 Controller

Moore / Siemens 353
The Yokogawa YS1700 is a great alternative to the
discontinued Moore / Siemens 353.

For all of you who use the Moore / Siemens 353 controller and are concerned that you'll have to turn to eBay for spare parts, don't worry - we have a great solution. The Yokogawa YS1700 is a drop-in replacement for the Siemens / Moore 353.

The YS1700’s powerful function block programming allows for custom strategies to control many demanding processes such as boilers and steam generators, PH control, dosing control, and many other demanding plant processes. It offers extreme reliability and sophisticated control and includes employs dual CPUs for maximum reliability and hard-manual control for added protection.

For more information on why the YS1700 is your best bet for replacing the Moore / Siemens 353, visit this link.

Monday, August 20, 2018

New Product Alert: BLH Nobel 1756 WM Dual-channel Plug-in Weighing Module for the Rockwell 1756 ControlLogix Chassis

The BLH 1756-WM is a weighing module designed to directly plug into the Allen-Bradley 1756 ControlLogix chassis.

Intended for inventory measurement and process control, the 1756-WM offers users simple configuration and is suitable for tank, silo, vessel and hopper weighing in the United States and Canadian markets.

The weighing module seamlessly integrates weighing into the Allen-Bradley PLC by directly fitting into a single slot in the 1756 ControlLogix chassis via a screw connection plug. The weighing module is powered from the input/output chassis backplane and needs only the load cells for connection.

Once in place and set-up, calibration and configuration for the 1756-WM are simply achieved through the Rockwell RSLogix 5000® PLC Development Software; no other external configuration utilities are required. Dual independent strain gage inputs—with sense inputs for six-wire connection—power up to eight 350-ohm load cells with up to four parallel 350-ohm load cells per channel.

Monday, August 13, 2018

Condition Monitoring Systems Provide Improved Performance, Safety & Profits: A Video Presentation

From large turbine generator protection to general-purpose equipment, rotating machinery provides critical and non-critical functions in plants across many industries in the USA. To avoid unnecessary downtime, plant operators turn to condition monitoring systems to monitor the health of these machines. Vibration is one of several important parameters that may lead to the early detection of machine trouble. Operators can benefit from efficient maintenance and avoid unscheduled downtime by performing periodic or constant monitoring of vibration.

The video below provides a quick overview of the performance, maintenance, safety, and profitability benefits that condition monitoring systems provide to plants who implement their use.

https://arjaynet.com
(800) 761-1749

Saturday, July 21, 2018

Measuring Flue and Exhaust Gas Flows in Large Stacks

Generally speaking, Flue or Stack gas is the exhaust gas resulting from any source of combustion. Typical commercial sources of these gases are ovens, furnaces, boilers or steam generators and power plants. The need to accurately monitor, measure and report on the exhaust from commercial combustion systems is increasingly required by environmental regulations and the resulting company policies. The need to do this reliably, and at the same time economically, can be a challenge unless the correct instrumentation is used.

The composition of flue or stack gas depends on the type of fuel that is being burned, but nitrogen (N2) derived from the combustion air is typically at least two-thirds of gas mixture, with carbon dioxide (CO2), water vapor (H2O) and excess oxygen (O2) making up the balance. The exhaust gas from even well-designed combustion systems will also contain a small percentage of a number of pollutants such as particulate matter (soot), carbon monoxide (CO), nitrogen oxides (NOx), and sulfur oxides (SO2). Typical ranges of these components for a gas-fired system are 74% N2, 7% CO2, 15% H2O, 4% O2, 200-300 ppm CO and 60-70 ppm NOx. For a coal-fired system they are 77% N2, 13% CO2, 6% H2O, 4% O2, 50 ppm CO, 420 ppm NOx and 420 ppm SO2.

The gases inside the stacks are much hotter — and therefore less dense — than the air outside of the stack. This difference in pressure is the driving force that “pulls” the required combustion air into the combustion zone and then moves the flue gas up and out of the stack. This movement of combustion air and flue gas is commonly referred to as the "natural draft" or "stack effect" though other terms are also used. Taller stacks produce more draft and the stacks for industrial applications can be quite large to facilitate both the intake of air for combustion as well as the dispersal of the flue gases over a wide area. The dispersal of the flue gas is necessary to reduce the overall concentrations of pollutants to acceptable levels in the surrounding atmosphere.

Continuous emission monitoring systems (CEMS) have been used for quite some time as a means to provide information for industrial combustion controls. To accomplish this, the systems monitored the flue gas for O2, CO and CO2. This basic function has been expanded in recent years to incorporate compliance with governmental regulations for air emission standards. In addition to the “traditional” gases, a CEMS that is used for environmental reporting now monitors emissions of SO2, NOx, mercury (Hg) and hydrogen chloride (HCL) as well as airborne particulate matter and volatile organic compounds (VOCs). The most common methods of sampling, analyzing and reporting used by the CEMS are dilution-extractive systems, extractive systems and in situ systems, with dilution-extractive systems being the most common.

In conjunction with the gas sampling, the overall gas flow rate must also be measured and accurately reported to get a complete understanding of the combustion process and the resulting stack emissions. However, measuring the flow rate in large stacks presents its own set of challenges. Uneven, irregular flow profiles across the large stack diameters are more common than not, and must be dealt with adequately to achieve the necessary accuracy in the overall flow measurement. The large diameters of these stacks make most common methods of flow measurement impractical, ineffective or prohibitively expensive. What is required to meet this challenge is an effective measurement technology in an instrumentation package with low operating costs and a variety of installation options.

Thermal Technology

Constant temperature thermal mass flow meters, such as those produced by EPI, operate on the principle of thermal dispersion or heat loss from a heated Resistance Temperature Detector (RTD) to the flowing gas. Two active RTD sensors are operated in a balanced state. One acts as a temperature sensor reference; the other is the active heated sensor. Heat loss to the flowing fluid tends to unbalance the heated flow sensor and it is forced back into balance by the electronics. The effects of variations in density are virtually eliminated by molecular heat transfer and sensor temperature correction, eliminating any need for additional instrumentation to provide true mass flow measurement.

Multipoint Systems

Multipoint Systems are designed to measure gas flows where two or more sensing points are required due to large cross-sectional areas such as exhaust and flue stacks. The EPI Series 9000MP Multipoint Systems are installed throughout the world, providing customers with years of steady, reliable service. Coupled with Air Purge System (APS), the Series 9000MP Multipoint Systems are now well-suited to an even greater variety of industrial applications.

The Series 9000MP Multipoint System includes one or more Series 9000MP Probes and a Series 9601MP System Control Panel (SCP). The probe assembly typically has two or more flow sensors mounted in a 11⁄2" OD probe shaft. The 9000MP probe’s sensors are removable for field replacement if one is damaged. Each sensor is matched to its own digital microcontroller. Communications between the probe assemblies and the SCP are transmitted via an integrated Modbus RTU network. The SCP includes its own microcontroller for system-level control and flow display. The SCP provides 0–5 VDC and 4– 20mA analog output signals. The 4–20 mA grand average output can drive up to 1200 ohms. RS232 & RS485 Modbus RTU communications are also supported for unprecedented access to the overall system, — including each individual sensor — for programmable Fail Safe operation and multiple options for flow signal recovery from a sensor failure.

The optional Air Purge System (APS) supports the cleaning of the sensors in applications where particulates cause problems. The frequency and duration of the purge cycle can be controlled externally or by using the Master-TouchTM software. The system can also be set to maintain the flow rate at its current level when the purge was activated. This important option preserves the integrity of the flow rate and elapsed total data which might otherwise be compromised by the flow of the purge gas.

Whether used in conjunction with a CEMS installation or as a standalone answer for accurate stack or exhaust gas measurement, the Eldridge Products, Inc. Series 9000MP Multipoint Systems are known for accurate, economical and reliable performance over many years of active service life. With addition of the integrated Modbus communications and the optional Air Purge system, the Series 9000MP gains even greater power and flexibility.

For more information on Eldridge Products thermal mass flow sensors, contact Arjay Automation by visiting https://arjaynet.com or calling (800) 761-1749.

Reprinted with permission from Eldridge Products, Inc.

Thursday, July 12, 2018

Arjay Automation: Skilled Engineers Solving Problems in Flowmeters, Toxic /Combustible Gas Detection, Process Weighing, and Analytical Measurements

Arjay Automation specifies, sells and supports instrumentation for measurement and control in Minnesota, North and South Dakota, Wisconsin and the North Central United States. Arjay differentiates themselves from other companies through it's team of skilled engineers who are experts in solving problems in the application of flowmeters, toxic and combustible gas detection, process weighing, and analytical measurements.

The video below explains the kinds of process control products Arjay Automation provides:

Monday, July 2, 2018

Happy Independence Day from Arjay Automation!


"One flag, one land, one heart, one hand, One Nation evermore!" 

Oliver Wendell Holmes

Tuesday, June 26, 2018

EasyTREK / EchoTREK Ultrasonic Level Transmitters for Liquids

EasyTREK - EchoTREK Ultrasonic Level Transmitters for LiquidsUltrasonic level metering technology is based on the principle of measuring the time required for the
ultrasound pulses to cover the distance from the sensor to the level of the media being measured and back. Echoes bouncing back from the surface of the process media reach the sensor surface after the time of flight of the ultrasonic impulse. With the help of the customizable tank dimensions or the pre-programmed flume / weir parameters, the time of flight of the reflected signal is measured and processed by the level control electronics, and presented as distance, level, volume or flow proportional data.

NIVELCO’s EasyTREK and EchoTREK high performance level transmitters are built upon 30 years of experience with ultrasonic level measurement. EasyTREK and EchoTREK transmitters are an excellent choice for liquid level measurement in sumps or tanks, or open channel flow measurement. Installed on the tank roof, or above the liquid surface to be measured, the transmitters have an analog output proportional to liquid level or can transmit a HART digital signal. Additionally, local readout is provided by a plug-in display which can be removed when not needed.

Review the embedded document below, or you can download the EasyTREK / EchoTREK Ultrasonic Level Transmitter PDF brochure by clicking this link.

Tuesday, June 19, 2018

Industrial Vibration Monitoring

Vibration Monitoring
Vibration Monitoring
All you have to do is drive in a car to understand that failing mechanical systems create symptoms that can be detected by our sense of feel. Vibrations in the steering wheel may indicate bad steering linkage. Transmission wear may manifest as loud or hard gear shifting. Exhaust systems that have come loose may be felt as in the floorboards as vibrations. All of these have one thing in common - degradation of a mechanical device beyond design specifications to the point of creating abnormal levels of vibration.

What is vibration?

Vibration is defined as “an oscillation of the parts of a fluid or an elastic solid whose equilibrium has been disturbed.”

Asset Monitoring on Large Equipment
Asset Monitoring for Large Equipment
Most important to understand is that vibration is motion, and that motion cycles around a position of equilibrium. Simply touch a running machine and you know if it's running or not, because the machine's motor creates a vibration which is transmitted to the other areas of the machine. In some machines, many parts can be rotating simultaneously, with each contributing it's own unique pattern of vibration. Human touch merely senses the sum of all these vibrations because touch is not sensitive to distinguish the individual differences. Vibration detection instrumentation and signature analysis software can sort out the various vibration components using sensors to quantify the magnitude of vibration, and more accurately determine how rough or smooth the machine is running. Vibration amplitude and the magnitude of vibration is expressed as:

Vibration Sensor
Sensor
Acceleration – The rate of change of velocity. Recognizing that vibrational forces are cyclic, both the magnitude of displacement and velocity change from a neutral or minimum value to some maximum. Acceleration is a value representing the maximum rate that velocity (speed of the displacement) is increasing.

Velocity – The speed at which a machine or machine component is moving as it undergoes oscillating motion.

Displacement – Also known as “peak-to-peak displacement”, this is the total distance traveled by the vibrating part from one extreme limit of travel to the other extreme limit of travel.

A variety of sensors are available that will sense vibrational displacement, velocity or acceleration, and provide a proportionate, measurable output signal. Applying these sensors depend largely on the machine condition with the help of limited guidelines published to determine the relative running condition of a machine.

Sensor Installed on Motor
Sensor Installed on Motor
Vibration signature analysis can be used in defining the exact machine location of the vibration and what component of the machine is in need of repair or replacement. When the vibration magnitude exceeds a predetermined value, sensors and software can narrow down the individual vibration signals and separate them via vibration magnitude and frequency. Combined with a little machine design understanding, a person schooled in vibration signature analysis can interpret this information to define the machine problem down to a component level. However, there are no guidelines to determine the absolute  limits of failure or indefinite life for machines. It is simply not possible to establish absolute vibration limits. Predictive maintenance programs are intended to establish severity criteria or limits above which action will be taken and monitor the overall condition of machines.

Vibration monitoring and analysis is used to uncover and predict a wide variety of problems related to rotating equipment, such as:
Predictive analysis for wind turbines
Predictive analysis for wind turbines.
  • Sleeve-bearing problems
  • Gear problems
  • Unbalance
  • Belt drive problems
  • Eccentric rotors
  • Flow-induced vibration problems
  • Rolling element bearing problems
  • Mechanical looseness/weakness
  • Misalignment
  • Resonance problems
  • Electrical problems
  • Rotor rub

Determining or predicting the presence of these problems is difficult, but asset monitoring technology is advancing quickly. As progress is made, modern manufacturing and production facilities can look forward to tremendous safety advancements and large cost savings through reliable and accurate predictive failure analysis.

Contact Arjay Automation to discuss your vibration and asset monitoring requirement. You can find them at https://arjaynet.com.

Wednesday, June 6, 2018

A Pressure Transmitter Design with Overpressure Protection

Overpressure Protection
Overpressure Protection Design
Overpressure can cause a pressure transmitter to fail or impair its performance. This effect happens when excessive differential pressure is applied to the device which is greater than its measuring range. Overpressure can occur from improper manifold sequencing, startup and shutdown conditions, or a sudden process upset. Yokogawa's unique capsule design equalizes overpressure within the capsule before it can reach the measurement sensor. Therefore Yokogawa's pressure transmitters prevent failure and minimize any performance impact from overpressure events. Overpressure protection provides
  • Increased reliability from reduced failures
  • Improved long-term stability in real-world conditions
  • Reduced maintenance costs through fewer unscheduled calibrations
The video below demonstrates how this is done.

For more information, contact Arjay Automation by visiting https://arjaynet.com or calling (800) 761-1749.

Wednesday, May 30, 2018

Bidirectional Insertion Turbine Meters Solve Municipal Water Transfer and Usage Problem

Municipal water diagram using insertion turbine flowmeters.
Municipal water system diagram.
Application: 

Accurate and cost effective flow monitoring for municipal water inventory control. Because of their wide geographic coverage and large amount of reservoirs and pump stations, the water utility needed to account for water moving between many user systems. Because of the movement of water back and forth, a bi-directional solution was needed.

System Requirements:
  1. Flowmeters were for use in 62″, 60″, and 36″ lines.
  2. Needed to be bi-directional to account for system usage.
  3. Needed to provide a “split” 4-20 mA output signal with 12 to 4 mA representing reverse flow and 12 to 20 mA representing forward flow (this was a requirement of their DCS system).
  4. Flowmeter portion of system had to be capable of immersion in a flooded pit (electronics to be located remote).
  5. Output from flowmeter was required to transmit over 500′ without any signal conditioning.
Solution: 

Hoffer HP Series bi-directional insertion flowmeter
Hoffer HP Series bi-directional insertion flowmeter.
Bi-directional, adjustable insertion turbine flowmeters (from Hoffer Flow Controls) were provided. Each meters included a 2″ rotor in order to obtain repeatable flow rates as low as .25 FPS. The flowmeters are equipped with 2 magnetic pick up coils oriented 90 electrical degrees from each another. All outputs were sent to a remote Flowstar Model 2000 which included the quadrature bi-directional detection feature and a split 4-20 mA signal, used to detect forward or reverse flow rate.

Why Hoffer had the advantage: 

The customer first considered (2) Annubar flowmeters back-to-back, one for forward and one for reverse flow measurement. This approach would have also required a flow switch to detect flow direction. Cost and complexity were big concerns. Consideration of a turbine flowmeter system offered a much simpler and less costly solution. Here's what it came down to:
Hoffer Flowstar flow computer
Hoffer Flowstar flow computer.
  • A single Hoffer flowmeter was usable for bi-directional flow measurement.
  • A Hoffer flow computer provided a split 4-20 mA signal representing both forward and reverse flow rate.
  • A Hoffer flow computer could provide linearization over the wide repeatable flow range provided by the insertion meter. This was critical because flow rates were low relative to the line size.
  • The Hoffer flowmeter was water tight, allowing for the possibility of flooded pits.
  • The Hoffer flowmeters are the adjustable type, and are installed through an isolation valve to allow user to service the flowmeters when necessary.
Summary: 

The use of Hoffer HP Series bi-directional insertion flowmeters provided the user economical flow rate/flow total information that efficiently enabled the water utility to manage the potable water throughout the system.

Saturday, May 12, 2018

9 Reasons to Use Temperature Transmitters Over Direct Wiring

Temperature transmitter
Temperature transmitter
(Moore Industries)
  1. Protect Signals From Plant Noise - Convert a sensor’s “weak” low-level signal to a high-level, RFI/EMI resistant signal that will accurately withstand long distance transmission through a noisy plant.
  2. Reduce Hardware Costs and Stocking Requirements - Convert RTD, T/C, mV, and ohm signals to a standard 4-20mA output. You can standardize on (and stock) inexpensive 4-20mA DCS and PLC input cards.
  3. Stop Ground Loops - Inherent input/output/power signal isolation protect against signal inaccuracies caused by ground loops. In place of costly isolated T/C and RTD DCS/PLC input cards, you can use far-less-expensive 4-20mA cards.
  4. Cut Wiring Costs - Fragile sensor extension wires cost three times more than the common shielded copper wire used for our transmitter’s 4-20mA signal.
  5. Lower Maintenance Time and Expense - Be able to keep track of sensor operation and quickly find and diagnose sensor failures.
  6. Enhance Measurement Accuracy - DCS and PLC systems measure readings over the entire (very wide) range of a sensor. Transmitters can be calibrated to any range within a sensor’s capabilities. Using a narrower range produces more accurate measurements.
  7. Avoid Lead Wire Resistance Imbalances - Transmitters accept true 4-wire RTD inputs. So you’ll be able to avoid lead wire resistance imbalances that inevitably result from wire corrosion and aging.
  8. Simplify Engineering and Maintenance and Prevent Mis-wiring - Instead of numerous sensor lead-wire and DCS/PLC input board combinations, your designs and drawings will only need to show one wire type (twisted wire pair) and one input board type (4- 20mA). Since your system will need only one type of wire and input board, maintenance is greatly simplified, and the chances of loop mis-wiring are virtually eliminated.
  9. Match the Best Sensor to the Application - Universal transmitters take nearly any RTD and T/C input. This lets you use whatever sensor is best for each particular process point. Direct DCS inputs aren’t nearly as flexible because they handle only one type of sensor input per card.
For more information, contact Arjay Automation by visiting https://arjaynet.com or call (800) 761-1749.

Abstracted from Moore Industries "Why Use Temperature Transmitters Instead of Direct Wiring".

Tuesday, May 1, 2018

The Honeywell Analytics Sensepoint XRL

Sensepoint XRL
Honeywell Analytics Sensepoint XRL
The Honeywell Analytics Sensepoint XRL is a single-sensor fixed gas detector designed to meet the needs of industrial applications, and supports the following interfaces (dependent on the model):
  • Analog output: Sensepoint XRL features current loop output, supporting signals in the range 0 to 22 mA. Typically this interface is referred to as 4 to 20 mA.
  • Digital output: Sensepoint XRL supports Modbus RTU digital communications.
  • Mobile app: A mobile app is available to commission and maintain the Sensepoint XRL gas detector.


Honeywell innovation enables customers to pair the gas detector with their mobile phone, and then use an app to perform many tasks related to installation, commissioning and maintenance. By using Honeywell's Bluetooth Low Energy (BLE) technology, you can install, commission and maintain your Sensepoint XRL gas detector from your mobile device. By using their gas detector app you can mange the device from up to 10 meters away.

The Sensepoint XRL Provides:
  • Quick installation.
  • Rapid configuration.
  • Simple operation.
  • Straight forward to maintenance.
Sensepoint XRL is available as a flammable gas detector for the detection of potentially explosive gases, or as a toxic gas detector for the detection of a range of toxic gas hazards commonly found in industrial facilities.

For more information, read the embedded document below, or download the Honeywell Analytics Sensepoint XRL datasheet from here.

Wednesday, April 25, 2018

Thermal Mass Flow Meters and Sensors

Eldridge Products
Since 1988 Eldridge Products has been a world leader and premier manufacturer of thermal gas mass flow meters. Eldridge Products offer a wide range of flow meters manufactured in their own US facility.

Eldridge Products serve a diverse range of industrial and municipal applications for process control gas sub-metering and overall energy conservation. Their meters provide the information you need for maximizing boiler efficiency, HVAC flow adjustments and compressed air audits, as well as aeration basin and biogas measurement. In water and waste treatment facilities, Eldridge Products meet the requirements for the EPA's mandatory CO2 monitoring. Eldridge Products maintain their own NIST traceable calibration facility and all flow meters are assembled, calibrated, and tested in their Monterey facility.

Their meters are built according to CE, CUS, CSA, and ATEX standards and they guarantee a 100-percent quality inspection policy so you receive the best product in the industry.

Eldridge Products have abroad network of sales representatives and product distributors throughout the US and the world.

Saturday, April 21, 2018

Graphic "Paperless" Process Recorders

Yokogawa paperless recorder
Yokogawa paperless recorder.
There are probably few among us who long for the days when process recorders used paper. Video based graphic (also known as paperless) recorders, aside from being paperless, provide a broad range of functionality that empowers a user to display and deliver process information in whatever way is most useful for the application.

High sampling speed of multiple inputs that can be configured to accommodate a range of input signals, along with data storage, network communications and programmable alarm outputs power up the usefulness of these instruments for monitoring and documenting process operation. Many utilize touch sensitive screens, eliminating any buttons or keys on the operator panel.

Some of the great features available on today's paperless recorders:

  • Multiple channels of input
  • Start/stop recording by batch, and create data files
  • Ample internal memory
  • Creation of template-based Excel spreadsheets
  • Custom display function
  • Historical data with date and time calendar search function
  • Ethernet interface
  • PROFIBUS-DP and EtherNet/IP protocols
  • Dust and splash-proof front panel
  • Front panel door lock and login function

There are many options and variants to accommodate every conceivable process control application. Share your data acquisition and process monitoring challenges with instrumentation specialists, leveraging your own knowledge and experience with their product application expertise to develop an effective solution.

For more information on paperless recorders, contact Arjay Automation by visiting https://arjaynet.com or call (800) 761-1749 .

Friday, April 13, 2018

Arjay Automation: Your Preferred Source for Industrial Automation Solutions

Arjay Automation is a manufacturer’s representative with extensive experience in the application and sale of controls and instrumentation for industrial and utility automation. Their core strength is solving problems in process control, flowmeter selection, analytical instrumentation, electrical watt hour metering, protective relaying and Utility Test Equipment.

Specialties include:
  • Industrial Controls
  • Substation Automation
  • Flow Measurement
  • Analytical Measurement
  • Asset Condition Monitoring
  • Test Equipment
  • Temperature Measurement
  • Watt Hour Metering
Watch the video below for more about Arjay Automation.

https://arjaynet.com
(800) 761-1749 

Monday, March 26, 2018

Process Alarm Primer

process alarm montoring units
Moore Industries shares their expertise on process alarm
setups and processing in their comprehensive white paper.
Moore Industries has a long history of designing and manufacturing process measurement and control specialties. Their unquestioned expertise at alarm monitoring and processing is encapsulated in a technical brochure entitled "Alarm Trips: The Ups and Downs".

The paper covers a number of subjects related to process alarms.

  • Hard vs. Soft Alarms
  • Basic Limit Alarm Trip Functions
  • Alarm Trip Relay Responses
  • Transmitter Excitation
  • Redundant Architecture
Each of the subjects is covered at a useful level of explanation and detail, with illustrations that provide additional clarity. An excerpt from the brochure is included below. Share your process monitoring and alarm challenges with process automation and control specialists and request a full copy of the brochure.


Wednesday, March 14, 2018

Data Acquisition: Essential for Process Improvement

compact data acquisition units for process control
Examples of modern process control data acquisition units.
Image courtesy Yokogawa-USA
Data acquisition, like an equipment acquisition, is the procurement of an asset. Data is an asset. It helps an operator evaluate process or business conditions and make decisions that impact the success of the organization. Let’s define data acquisition as the sampling of signals that represent a measurement of physical conditions and the conversion of those signals into a numeric form that can be processed by a computer. A data acquisition system will generally consist of collection device or terminal, sensors, transmitters, converters, processors, and other devices which perform specialized functions in gathering measurements and transforming them into a usable form.

Industrial process operators and stakeholders benefit from the collection and analysis of data by enhancing performance of valuable facets of the process or activity. Data acquisition, commonly known as DAQ, is widely employed in high stakes and sophisticated processes where there is a compelling need to know current conditions and retain a history of those passed. A desire for increased profit drives the need for increased process output and efficiency. A desire to reduce risk of loss drives the need for reduced downtime and improved safety. Today, there are likely many useful applications for data acquisition that are not being tapped to their fullest potential. The modest cost and simplicity of putting a data acquisition system in place, compared to the benefits that can be derived from a useful analysis of the data for your operation or process, makes the installation of a data acquisition system a positive move for even small and unsophisticated operators in today’s market.

What we call DAQ today started in the 1960’s when computers became available to businesses of large scale and deep pockets. By the 1980’s, personal computers employed in the business environment could be outfitted with input cards that enabled the PC to read sensor data. Today, there is an immense array of measurement and data collection devices available, spanning the extremes of price points and technical capability. For a reasonable cost, you can measure and collect performance data on just about anything. You can get an impression of the simplicity, modularity, and compactness of a modern system with a quick review of this product.

Data acquisition has an application anywhere an operator or stakeholder can benefit from knowing what is occurring within the bounds of their process or operation. Here is a partial list of the many physical conditions that can be measured in industrial, commercial and research settings:
  • Temperature
  • Pressure
  • Flow
  • Force
  • Switch Open or Closed
  • Rotational or Linear Position
  • Light Intensity
  • Voltage
  • Current
  • Images
  • Rotational Speed
  • Gas Concentration
Consider your industrial process or operation. Are there things you would like to know about it that you do not? Would you like to increase your insight into the workings of the process, how changes in one condition may impact another? Do you know what operating condition of each component of your process will produce the best outcomes? Is reducing maintenance, or heading off a failure condition before it occurs something you would like to have in your operation? Applying your creativity, ingenuity and technical knowledge, along with the help of a product expert, will help you get the information you need to improve the outcomes from your industrial process or operation.

Friday, March 9, 2018

In Situ Gas Analyzers

process measurement in situ gas analyzers
Several variants of in situ process gas analyzers
Image courtesy Sick, Inc.
Measurement and analysis of combustion gas is a common and necessary task that assists in fulfilling regulatory compliance requirements and attaining highest fuel efficiency levels. Gas analysis is also utilized in many processes for quality assurance, process control and other applications. In situ gas analyzers can target specific gas constituents and provide continuous streams of measurement data for single or multiple target gas components.

An in situ analyzer is a permanently installed instrument that resides right in the process. Its sensor is installed within the process gas stream. These devices, because of this locating, must be physically rugged and able to provide sufficient resistance to corrosion, heat, moisture and other environmental conditions found at a process facility. Additionally, some may require compliance with requirements for installation in a rated hazardous area. 

The benefits derived from overcoming the challenges of in situ location of the analyzer are substantial, especially when compared to the alternative of periodic gas sampling and laboratory analysis.
  • Direct, fast in-situ measurement directly in the process
  • No gas sampling, transport or conditioning
  • Up to eight measuring components at the same time, plus process temperature and pressure
  • Numerous independent measuring ranges with consistent accuracy
  • Overpressure encapsulated design for ATEX Zones 1 and 2
Share your combustion and process gas analysis and measurement challenges with application specialists. An effective solution will come from leveraging your own process knowledge and experience with their product application expertise.

Thursday, February 22, 2018

An Overview of Prozess Technologie



Real time continuous analytical measurement data from an operating process enhances efficiency, productivity, quality, even safety. Prozess Technologie utilizes spectroscopic technology solutions for process measurement and control in multiple manufacturing sectors. The company's precision light technologies measure target process conditions, enabling customers to understand and control chemical manufacturing processes in real time.

With significant success in pharmaceuticals and life sciences, Prozess Technologie has also installed systems in food & beverage, agriculture, and petrochemical venues. Solutions encompass purpose built hardware, software and professional services.

Share your process analytical measurement and monitoring challenges with product application specialists. Leverage your own knowledge and experience with their product application expertise to develop effective solutions.

Saturday, February 17, 2018

Diaphragm Seals for Vacuum Applications

One of many variants of diaphragm seal used to isolate
a pressure instrument from process media.
Image courtesy REOTEMP Instruments
For every process measurement application there is always at least a small amount of specific or specialized information or knowledge that can be an important part of the instrument selection process. REOTEMP, a globally recognized manufacturer of temperature and pressure instrumentation, shares their expertise on the application of diaphragm seals in vacuum applications. Their white paper is provided below, but you should also share your pressure and temperature measurement requirements and challenges with a process measurement specialist. Leverage your own knowledge and experience with their expertise to develop effective solutions.


Saturday, February 10, 2018

Thermal Mass Flow Meter Targeted at HVAC Applications

flow averaging tube sensor for thermal mass flow measurement in air
The Flow Averaging Tube sensor assembly delivers an
improved representation of duct air flow.
Image courtesy Eldridge Products, Inc.
Heating, Ventilating and Air Conditioning (HVAC) is a process control application, similar in many respects to industrial production processes. Heat is transferred, moisture is controlled; air is moved; steam is generated. All of these operations involve measurements of temperature, moisture, flow, pressure, and more. Instrumentation is applied to HVAC systems of all sizes to monitor and regulate operation, with two essential goals: efficiency of operation and maintenance of desired space conditions.

A common measurement is air flow rate in a duct. The mass flow rate of air is an essential element in calculating the amount of heat or cooling delivered from supply equipment. There are other instances where highly accurate mass air flow measurements can contribute to the effective operation of an HVAC system.

Thermal mass flow measurement technology has been used in industrial process measurement and control applications for many years. The basic operation involves measuring flow in relation to its heat dissipating effect on a temperature sensor. Higher mass flow produces a higher rate of heat transfer. The technology is simple and self-contained within an instrument sensing tube or probe.

Thermal mass flow measurement instruments are popular for several reasons. They have no moving parts; present little obstruction to the fluid flow path; are accurate over a wide range of flow; measure mass flow rather than volume; measure flow in large or small piping systems; and do not need temperature or pressure compensation. While most thermal flow meters are used to measure flowing gas, they can also be applied to measure liquids.

Thermal mass flow meters are cost effective and accurate making them an excellent choice for HVAC air flow applications.

Eldridge Products employs a patented Flow Averaging Tube with their thermal mass flow transmitter to deliver accurate and reliable mass air flow measurements in ducts where flow conditions may not be ideal. The setup is available in a range of sizes and variants to suit almost any scale and complexity in HVAC application. The transmitter provides a common industrial signal corresponding to mass flow rate, as well as a temperature signal.

Share your HVAC measurement and control challenges with application specialists, leveraging your own knowledge and experience with their product application expertise to develop an effective solution.

Sunday, January 21, 2018

Matching Temperature Sensor Type to Process Requirement

industrial temperature sensor thermocouple rtd transmitter
Temperature sensors and transmitters are available in
almost countless variants to accommodate every application.
Image courtesy Moore Industries
Temperature may be the most common measurement in process control operations. The measured value provides direct and inferential information about the energy content and operation of many processes.

For a wide array of temperature applications, getting a high level of accuracy is vital. For others, precision is not as important as ruggedness of the sensor, or cost, or some other criteria. Moore Industries brings vast experience in the design, manufacture and application of process temperature measurement to bear in the white paper included below. The condensed knowledge highlights how plant and site engineers can ensure  accurate temperature measurement for critical applications. Selecting the best sensor for a particular application and ways to improve the accuracy of the sensor you choose are also discussed. In particular, it details the reasons why 4-wire RTD sensors are almost always the best choice for high-accuracy temperature applications.

When facing temperature or other process measurement challenges, share your requirements with a process measurement and control specialist. Leverage your own knowledge and experience with their product application expertise to implement an effective solution.


Thursday, January 11, 2018

Dual Mode Thermometer Provides Independent Sensors for Local and Remote Readout


A dual mode thermometer incorporates two independent temperature sensors into a single thermowell. One sensor is part of the filled system of a bulb and capillary thermometer that delivers a local dial face readout for on-the-spot verification. The second sensor, an RTD or thermocouple, can be used locally, or combined with a transmitter to provide a process temperature signal at a remote location. Compact, convenient and accurate, the dual mode thermometer can easily replace an existing RTD, thermocouple or thermometer installed with a thermowell.

A broad range of configuration selections allows tailoring of the instrument to any application. Share your process measurement challenges with automation and instrumentation specialists, leveraging your own process knowledge and experience with their product application expertise.

Friday, January 5, 2018

Radar Level Transmitter Application

non-contact radar level transmitter in process tank
Radar level transmitters can be configured for non-contact
measurement of liquid levels.
Image courtesy Nivelco Process Control Co.
Radar is generally accepted to encompass means by which electromagnetic waves of short wavelength (microwaves) are used to detect the presence of, and distance to, a remotely located object. While the technology is probably best known for its use in miltary and air traffic control scenarios, radar ranging technology has also been put to industrial processing use in measuring the level of liquids and solids in containers of many types.

Very simply, a radar level measurement instrument emits a burst of electromagnetic energy and measures the time interval from its emission to return. The emitter directs the microwaves toward the surface of the material to be measured. As the distance from the emitter to the material increases, so does the transit time of the wave on its round trip from emitter to media surface and back to a detector antenna. This transit time is proportional to the distance from the emitter to the media surface and can be used to calculate the media level.

Radar level transmitters can provide onboard processing of the raw signal, delivering a standard industrial process control signal which is scaled to a useful value range indicating percentage of tank fill, or some other useful representation of media level.

Radar level technology is utilized in a guided wave format, where the emitted energy travels down a tube extending into the medium, and non-contact configurations with the microwave emissions dispersing as they travel from the source antenna. Both types deliver excellent accuracy and have their specific application criteria where they may be preferred.

Properly selecting and applying level measurement instrumentation requires consideration of many operational and technological aspects of each process. Share your process measurement challenges with application specialists and leverage your own knowledge and experience with their product application expertise.