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.

Monday, December 18, 2017

Hazardous Gas and Flame Detection in Industrial Settings

hazardous gas detector station sensor
Gas detector station is part of a comprehensive
monitoring solution.
Image courtesy Honeywell Analytics
Arjay Automation handles gas and flame detection devices and equipment for use in commercial and industrial facilities. Their Honeywell Analytics product line covers complete solutions for gas and flame detection, from sensors to monitoring and control stations. The systems approach includes sensor modules, controllers, and software working together to provide detection, alarm, analytics, and delivery of all necessary information across communications networks.

Honeywell employs a variety of technologies to provide application matched performance in their gas and flame detectors. The company innovates and leverages their extensive IIoT (Industrial Internet of Things) expertise to deliver enhanced levels of protection and operating efficiency to customer facilities. Systems are tailored to provide the level of protection appropriate for a facility or application, as well as a customized response.

Sensors are optimized for their intended application range, bringing accuracy and efficiency to hazardous gas and flame detection. Some of the benefits include:
  • Low power requirements
  • Rapid response
  • Various filtering means to discriminate between noise and real hazards
  • Multiple output options
  • Reduced maintenance
  • Self diagnostics
  • Local display
  • More
Honeywell provides a short article that provides some insight into selecting the best set of products and technologies for your gas detection application. The article is included below, but you should share your gas and flame monitoring challenges with application specialists, combining your process and facility knowledge with their product application expertise to develop a comprehensive and effective solution.

Friday, December 15, 2017

Dual Input Temperature Transmitter With Built-In Intrinsic Safety Barrier

dual input temperature transmitter with intrinsic safety barrier
Moore Industries' dual input temperature transmitter
is available with built-in intrinsic safety barrier.
Image courtesy Moore Industries
Designing and building control panels, whether large and complex or simple, is time consuming and requires coordination of many factors. Each component must be matched for the intended application and provided with adequate installation and service clearance to enable proper operation and serviceability. It is generally advantageous to the design process, and the build cost, if multiple functions are incorporated in a single component. Often, the reduction in space requirement, cost, wiring, and setup or testing can be substantial.

Moore Industries recently added an option to their dual input temperature transmitter that provides built-in intrinsic safety barriers for the input to the transmitter. Eliminating the tasks and panel space needed to make a proper barrier selection and get it installed in the panel will make panel design and build-up easier and less costly.

More detail on the temperature transmitters is included in the document provided below. Share your process measurement and control challenges with the specialists at Arjay Automation. Leverage your own knowledge and experience with their product application expertise to formulate the best solutions.

Friday, December 8, 2017

Precision Turbine Flowmeters

turbine flowmeter for custody transfer
Turbine flowmeter applicable to custody transfer operation.
Image courtesy Hoffer Flow Controls
Precision turbine flow meters are specially designed to accommodate a broad range of precise fluid measurement applications. They can handle greater flow rates with lower pressure drop than other meters in their class. The turbine's high-frequency digital output is suitable for interfacing with an assortment of readout and recording equipment. Some turbine flow meters have a bi-directional design that supports reverse flow applications without a reduction in accuracy or capacity.

Turbine flowmeters can be fabricated from a variety of materials to accommodate the target media and other application considerations. Product selection should incorporate aspects of useful measuring range, corrosion resistance, and anticipated operating life for a particular application. Some beneficial product features include:
  • A low mass rotor which promotes rapid response to changes in flow.
  • Deflector cones or other structures that reduce downstream thrust on the rotor bearings to enhance performance and extend bearing life
  • Integral flow straightening tubes or other shapes that dampen the effects of upstream flow turbulence. 
  • A single moving part, the rotor.
The flowmeter housing is made of nonmagnetic materials. The rotor is made of magnetic or magnetized material. As fluid flows through the instrument, the rotor spins. The angular velocity of the rotor vanes is proportional to the fluid flow rate. Pickups mounted on the housing sense the passage of the rotor vanes, providing a pulsed signal that can be used to calculate the fluid velocity, volumetric flow rate and totalized flow.

Turbine flow meters, with their simple, durable construction and wide operating range, can be the best choice for a number of applications. As with all instrumentation, there are factors to consider when making a selection. Share your flow measurement challenges and requirements with instrumentation specialists, leveraging your own process knowledge and experience with their product application expertise to develop an effective solution.

Tuesday, December 5, 2017

Combustion Airflow Measurement

combustion airflow measuring station
Two versions of the Combustion Airflow Measurement
Station, from Air Monitor Corporation.
Image courtesy Air Monitor Corporation
A Combustion Airflow (CA) Measurement Station is a multi-point, self averaging pitot traverse station designed to provide accurate and repeatable primary, secondary and/or tertiary airflow measurement in gas, oil or coal fired power plants.

Accurate combustion airflow measurement is a key element in meeting the twofold objectives in the power industry; lowering emissions, and increasing plant performance through combustion efficiency. Precise measurement of combustion airflow and fuel rates contributes to the achievement of those objectives by providing information needed to optimize fuel to air ratios and facilitate more complete, stable combustion. Limited available straight duct runs, low airflow rates, sensor proximity to modulating control dampers, broad turndown range requirements, and high concentrations of airborne particulates inhibit the use of many other measurement methods in obtaining usable measurements.

The CA Combustion Airflow Measurement Station, from Air Monitor Corporation, is detailed in the document included below. More information is available from application specialists. Share your airflow measurement challenges of all types with experts, leveraging your own knowledge and experience with their product application expertise to develop effective solutions.

Thursday, November 9, 2017

Overview of Level Measurement Instrumentation for Chemical and Pharma Applications

stainless steel level transmitter
Nivelco manufactures a broad range of process
instruments for level measurement
Image courtesy Nivelco
Measurements of liquid or bulk solid levels within a tank or other vessel are an integral part of chemical processing. Each application presents its own set of measurement challenges, as well as practical considerations related to safety, environmental conditions, and life cycle cost.

Nivelco manufactures a broad range of instruments utilized for level measurement in industrial process applications. Technologies employed include contact and non-contact variants, along with switches and transmitters.

The brochure included below provides an overview of Nivelco products targeted for use in the chemical and pharmaceutical industries. Share your process measurement and automation challenges with application specialists, leveraging your own knowledge and experience with their product application expertise to develop an effective solution.