Mass Flow Meters and Controllers Specifications

Help with Mass Flow Meters and Controllers specifications:

Type

	Type
	Your choices are...
	Thermal Meter		Thermal meters use a heated sensing element isolated from the fluid flow path. The flow stream conducts heat from the sensing element. The conducted heat is directly proportional to the mass flow rate.
	Coriolis Meter		With Coriolis meters, fluid is passed through a small vibrating flow tube. The resulting deflection of the flow tube is proportional to the mass flow rate of material.
	Other		Other unlisted, specialized, or proprietary configurations.
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	Process Media Type
	Your choices are...
	Gas		Devices measure the flow of gases.
	Liquid		Devices measure the flow of liquids.
	Steam		Devices can accommodate mixed-phase materials such as steam.
	Suspended Solids / Slurries		Devices can accommodate liquids with suspended solids (slurries). Typically, the material types are determined by the meter technology chosen. For additional guidance, refer to information about meter technologies or consult the manufacturer.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Pipe Diameter		The diameter of the process pipe to be monitored.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

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Performance A meter's performance can be determined by its turndown ratio. Turndown ratio is the effective dynamic or operating range of the flow meter. For example, if a 500 SCCM flow rate device has a turndown ratio of 50:1; it will operate effectively and resolve flow down to 10 SCCM. If the same device has a turndown of 100:1, then it will resolve effectively to 5 SCCM.

	Mass Flow Rate		Mass flow range is the range of flow in mass/time. This specification applies to mass flow sensors and meters.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
	Gas Volumetric Flow Rate		Gas volumetric flow rate range is the range of flow in volume/time. This specification applies to volumetric flow sensors and meters for gases.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
	Liquid Volumetric Flow Rate		Liquid volumetric flow rate range is the range of flow in volume/time. This specification applies to volumetric flow sensors and meters for liquids.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
	Operating Temperature		The temperature range over which the device must operate.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
	Operating Pressure		Operating pressure is the maximum head pressure of the process media that devices can withstand.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Media Temperature		Media temperature range is the maximum media temperature that can be monitored. It is usually dependent on construction and liner materials.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

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Features

	Mounting Type
	Your choices are...
	In-line		In-line flow meters are installed directly in the process line. They have a variety of end-fittings including flanges, threads, and compression fittings. Typically, in-line flow meters require a straight run of pipe for installation.
	Insertion Type		Devices are inserted perpendicular to flow path. They usually require a threaded hole in the process pipe or another means of access.
	Non-Invasive		Non-invasive flow meters do not require mounting directly in the process flow and can be used in closed piping systems. Ultrasonic flow meters such as Doppler devices may use this type of mounting to read the flow through the pipe.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	End Fittings
	Your choices are...
	Clamp		Devices are inserted parallel to the flow path and clamped between two existing process pipes. External clamp-on flow meters are non-invasive. They do not require mounting directly in the process flow and can be used in closed piping systems.  Ultrasonic, or Doppler, flow meters may use this type of mounting to read the flow through the pipe.
	Compression		Compression fittings tighten down a sleeve or ferrule over a joint to prevent leakage.
	Flanged		Devices are inserted parallel to the flow path, usually between two pieces of existing, flanged process pipes. Circular or square flanges are used to connect the fitting, typically via bolting or welding.
	Plain End		Devices have a plain, straight-pipe end that can be inserted into the bell end of the connecting pipe.
	Socket Weld / Union		The end fitting is designed for welding or soldering and can be a weld neck.
	Threaded		Devices are inserted parallel to the flow path and threaded into two existing process pipes. National pipe thread (NPT) is the most common thread type.
	Tube End / Hose Nipple		Tube-end or hose-nipple is a common description for a short piece of pipe, usually with male threaded ends.
	VCO® / VCR®		VCO® and VCR® connections are proprietary, threaded fittings for vacuum applications that use the Swagelok design. VCO® fittings have an O-ring face seal.  VCR® fittings have a metal gasket face seal. VCO and VCR are registered trademarks of Cajon Company. Swagelok is a registered trademark of Swagelok Co.
	Other		Other unlisted, specialized, or proprietary configurations.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Electrical Output
	Your choices are...
	Analog Current		Analog current levels (transmitters) such as 4 – 20 mA are suitable for sending signals over long distances. A current is imposed on the output circuit proportional to the measurement. Feedback is used to provide the appropriate current regardless of line noise and impedance.
	Analog Voltage		Analog voltage outputs are simple, usually linear functions of the measurement.
	Frequency		Frequency or modulated frequency outputs include amplitude modulation (AM), frequency modulation (FM), sine waves, and pulse trains.
	Switch		The output is a change in state of a switch or a relay.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Interface Options
	Your choices are...
	Serial / Digital		Flow meters can provide signal outputs in serial, parallel, Ethernet, or other digital formats. Devices with a serial/digital interface can provide a process variable for measurement, but do not include communication lines.
	Network / Fieldbus		Devices output signals that are formatted according to an industrial fieldbus protocol such as CANbus, PROFIBUS®, or SERCOS; a networking protocol such as Ethernet; or another industrial automation protocol. PROFIBUS is a registered trademark of PROFIBUS International.
	Other		Other unlisted, specialized, or proprietary interface options.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Features
	Your choices are...
	Controller Functions		Devices have or receive sensor input, provide control, (limits, PID, logic, etc.) and output a control signal.
	Measures Density		The sensor or meter also measures density.
	Measures Level		The sensor or meter also measures level.
	Measures Temperature		The sensor or meter also measures temperature.
	Audible or Visual Alarms		Instruments have audible or visual alarms to alert users to dangerous conditions.
	Averaging / Multi-Insertion		Multi-insertion flow meters determine the flow rate by taking flow rate measurements across several points in the flow path.
	Programmable		Typically, programmable meters include a built-in microprocessor. They can be adjusted electronically for different materials, ranges, outputs, etc.
	Recorder / Totalizer Functions		Totalizer functions totalize the amount of material, media, or process variable controlled. A recorder function may be a datalogger that logs system or process variables and/or control commands for later viewing or analysis. A chart recorder that can plot (chart) flow history or give total flow for a given unit of time may also be available.
	Sanitary		Devices are designed for use in sanitary environments, such as in medical or food processing applications.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

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