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Air Velocity Flow Sensors Specifications

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Instrument Style




   Instrument Style       
   Your choices are...
 
      
 
   Insertion Probe Type
 
     Inserted into the air flow, these instruments measure the effectiveness of ventilation by measuring air velocity.
 
   Flow Hood or Balometer
 
     These instruments measure air volume flow at air supply or exhaust outlets.
 
   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.
Mounting




   Mounting       
   Your choices are...
 
      
 
   Hand-held or Portable
 
     Portable and/or applicable by hand operation.
 
   Fixtured or Permanent
 
     Mounted or fixtured in place for long-running use.
 
   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.
Measurement Type




   Air Velocity?
 
     Air velocity may be measured directly or calculated from the velocity pressure (e.g., FPM, m/s, etc.).
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Air Volumetric Flow?
 
     Air volume flow is the product of the air velocity and the duct cross-sectional area (e.g., CFM, SCFM, etc.).
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Air Pressure Differential?
 
     The velocity pressure is the difference between the total pressure and the static pressure (e.g., PSI, etc.).
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
Technology Type




   Technology Type       
   Your choices are...
 
      
 
   Thermal Anemometer
 
     A body is heated up to a fixed temperature and then exposed to the air velocity. By measuring how much more air is required to maintain the original temperature, indication of the air speed is gained. The higher the air speed, the more energy required to keep the temperature at a set level.  Based on the principle of wind chill factor. Hot wire, hot ball and thermistor probe types.
 
   Differential Pressure
 
     Pitot tubes, averaging tubes and other velocity pressure measurement devices. The velocity pressure is the difference between the total pressure and the static pressure. A Pitot tube has two pressure sampling points (static pressure and back pressure). Used with a differential pressure transmitter, the difference between these pressures is a measure of the velocity.
 
   Vane Anemometer (Velometer)
 
     A proximity switch counts the revolutions of the vane and supplies a pulse sequence, which is converted by the measuring instrument to a flow rate.  Based on the conversion of rotation into electrical signal. Rotating and swinging vane types.
 
   Other Technology Type
 
     Other unlisted, specialized, or proprietary technology 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.
Air Velocity Flow Range




   Air Velocity Range
 
      
 
   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.
Air Volume Flow Range




   Air Volume Flow Rate Range
 
      
 
   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.
Air Pressure Range




   Air Pressure Range
 
      
 
   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.
Accuracy




   Accuracy
 
      
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
Output Options




   Output Options       
   Your choices are...
 
      
 
   Outputs an analog voltage signal
 
     Outputs an analog voltage signal
 
   Outputs an analog current signal
 
     "Transmitter" Option; (e.g., 4-20 mA)
 
   Frequency or Modulated Frequency Output
 
     Frequency or modulated frequency output (Ex. sine wave, pulse train, AM, FM).
 
   "Output" is a switch or alarm signal
 
     "Output" is a switch or alarm signal.
 
   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.
Local Interface




   Local Interface       
   Your choices are...
 
      
 
   Analog Front Panel
 
     Has analog user inputs such as potentiometers, dials, switches, etc.
 
   Digital Front Panel
 
     Setup or program through the front panel using digital keypad, menus, etc.
 
   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.
Computer Interface




   Computer Interface?
 
     Can be controlled or monitored remotely with a computer via interface.
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
Computer Interface Options




   Computer Interface Options       
   Your choices are...
 
      
 
   Serial Interface
 
     Serial communication protocol such as RS232, RS485, USB.
 
   Parallel Interface
 
     Parallel communication protocol such as GPIB / IEEE 488 / HPIB Protocol.
 
   Other Computer Interface
 
     Special requirements such as modem, RF transmitter, etc.
 
   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.
Software




   Application Software Included?
 
     For control or for monitoring meter.
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
Display Type




   Display Type       
   Your choices are...
 
      
 
   Analog Meter or Indicator
 
     Includes needle meters, LED indicators, etc.
 
   Digital Readouts
 
     Numerical or application-specific readouts
 
   Video Display Terminal
 
     Generic video display terminal, e.g. CRT, flat panel displays, etc.
 
   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




   Also measures temperature?
 
      
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Time or multi-point averaging?
 
     Compensates for non-uniform air velocity across the duct cross-section.
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Temperature compensation?
 
      
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Audible or Visual Alarm?
 
      
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Selectable Range?
 
      
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
Environment




   Operating Temperature
 
      
 
   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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