Help with Thermal Energy Meters specifications:
Type
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| Turbine Meter | Turbine meters use a pipe-mounted rotor that is perpendicular to the liquid flow. The rotor spins as the medium passes through the blades. The rotational speed is a direct function of the flow rate and can be sensed by magnetic pickup, photoelectric cell, or gears. | ||
| Ultrasonic Meter | Ultrasonic meters use sound waves to determine flow rates. They can be either Doppler effect meters or time-of-flight meters. Doppler effect meters measure the frequency shifts caused by fluid flow. The frequency shift is proportional to the fluid's velocity. For Doppler meters to work properly for a liquid, particles must be present (measuring "pure" liquids is not possible). Time-of-flight meters use the speed of the signal traveling between two transducers that increase or decreases with the direction of transmission and the velocity of the fluid being measured. For liquids, ultrasonic flow meters work best with a less than 10% by volume content of suspended solids or air gaps. | ||
| Other | Any unlisted, proprietary, or specialized meter type. | ||
| 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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| Process Media Type | |||
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| Gas | Devices measure the flow of gases. | ||
| Liquid | Devices measure the flow of liquids. | ||
| Steam | Devices can accommodate mixed-phase materials such as steam. | ||
| 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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Mounting
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| Mounting | |||
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| Hand-held or Portable | Portable and/or applicable by hand operation. | ||
| In-line | In-line 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 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. | ||
| Other | Any unlisted, proprietary, or specialized mounting type. | ||
| 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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Performance
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| Temperature Range | Full required range of temperature measurement. Actual temperature range may vary somewhat from typical range guidelines associated with the various types. | ||
| 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. | ||
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| Nominal 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. | ||
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| 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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