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b1 Airflow Sensing Elements
b1 Pressure Sensing Elements
b1 Flow Transducers
b1 Differential Pressure Transducers
b1 Indicating Meters
b1 Calibration Tools
 
 
 
Flow Transducers
 
 
MicroTransEQ Airflow Signal Processor
 
 
The MicroTransEQ flow transducer utilizes a 24 bit A/D converter for signal processing and can produce accuracies of ±0.1% of reading. The ultra low 0.03"w.c. differential pressure (693 fpm at standard air density conditions) full scale operating range and the auto zeroing function provides accurate air flow measurement down to 100 fpm making this product ideal for outdoor air flow measurement applications and for use on projects seeking to obtain credit for IEQ Credit 1: Outdoor Air Delivery Monitoring under the LEED® Green Building Rating System. The MicroTransEQ also accepts a temperature input signal for air density compensation for standard or actual airflow calculations. For easy use on fan inlet applications with piezometer ring systems, the MicroTransEQ incorporates a special piezometer ring flow algorithm with easy flow coefficient entry through display menus. A 4-point flow correction and K-factor field menu are included to reduce time and save money spent on balancing. Device monitoring and configuration can also be performed by a building management system through either a LonWorks®, BACnet-MS/TP® Master, or Modbus® RTU Slave communication network.
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MicroTransII Airflow Signal Processor & Controller
 
 

The MicroTransII transducer can produce accuracies of ±0.1% of reading and includes an optional three mode (P, I, 1/D) controller. The ultra low 0.03"w.c. differential pressure (693 fpm at standard air density conditions) full scale operating range and the auto zeroing function provides accurate air flow measurement down to 100 fpm making this product ideal for control of outdoor air dampers.  An optional economizer override feature is included to allow the BMS system to override the constant volume controller output. The MicroTransII controller can also be used to maintain a constant duct volume or duct pressure by controlling a variable speed drive or damper. For easy use on fan inlet applications with piezometer ring systems, the MicroTransII incorporates a special piezometer ring flow algorithm with easy flow coefficient entry through display menus.  A 4-point flow correction and K-factor field menu are included to reduce time and save money spent on balancing.  Device monitoring and configuration can also be performed by a building management system through either a LonWorks®, BACnet-MS/TP® Master, or Modbus® RTU Slave communication network.

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FAATS-1000 Fan Array Airflow Totalizing System
 
 
The FAATS-1000 Fan Array Airflow Totalizing System has been specifically designed to provide a cost effective means for accurate (±0.25%F.S.) airflow measurement of up to forty individual fans within a single fan array or forty combined fans in an air handling unit with both supply and return fan arrays. The individual airflow rate of each fan in an array is indicated on a seven inch, full color, Human-Machine-Interface (HMI) touch screen panel as well as the summed (total) airflow rate of each array. The total airflow rate of each array is also made available to the Building Management System (BMS) via dedicated field selectable 0 to 5 VDC, 0 to 10 VDC, or 4 to 20 mA analog outputs. Individual fan airflow rates and total airflow rates for each array are also available to the BMS via BACnet®-MS/TP Master or Modbus® RTU Slave network communications. Independent monitoring of each fan allows the FAATS-1000 to identify and alarm fan failures and airflow rate discrepancies between fans.
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FT & FIT-1001 Series Air Volume/Velocity Transducers
 
 
FT & FIT-1001 Series are analog two wire differential pressure transducers with a square root extractor, scaling multiplier, and output filter complete in a single package. The 4-20 mA output of the transducers is linear to velocity or volume. Each transducer is factory spanned and calibrated to meet the design requirement of the application and flow measuring elements being served. Optional features include local indication of the measured process air velocity and/or volume on either a 0.5 inch high 3-1/2 digit LCD display meter scaled in cfm (Model FIT-1001-D) or an independent front panel mounted magnehelic pressure gauge scaled in both cfm and fpm (Model FIT-1001-M), and a built-in three-way manual zeroing valve for ease of zero verification and calibration (Models FT-1001-ZV, FIT-1001-DZV, and FIT-1001-MZV).
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FT & FIT-1003 Series Air Volume/Velocity Transducers
 
 
FT & FIT-1003 Series are analog three wire differential pressure transducers with a square root extractor, scaling multiplier, and output filter complete in a single package. The 0-5 or 0-10 VDC output of the transducers is linear to velocity or volume. Each transducer is factory spanned and calibrated to meet the design requirement of the application and flow measuring elements being served. Optional features include local indication of the measured process air velocity and/or volume on either a 0.5 inch high 3-1/2 digit LCD display meter scaled in cfm (Model FIT-1003-D) or an independent front panel mounted magnehelic pressure gauge scaled in both cfm and fpm (Model FIT-1003-M), and a built-in three-way manual zeroing valve for ease of zero verification and calibration (Models FT-1003-ZV, FIT-1003-DZV, and FIT-1003-MZV).
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FT & FIT-1005 Series Air Volume/Velocity Transducers
 
 
FT & FIT-1005 Series are analog four wire differential pressure transducers with a square root extractor, scaling multiplier, and output filter complete in a single package. The 4-20 mA, 0-5 VDC, or 0-10 VDC selectable output of the transducers is linear to velocity or volume. Each transducer is factory spanned and calibrated to meet the design requirement of the application and flow measuring elements being served. Optional features include local indication of the measured process air velocity and/or volume on an independent front panel mounted magnehelic pressure gauge scaled in both cfm and fpm (Model FIT-1005-M), and a constant volume purge feature that prevents contaminants from migrating to the differential pressure sensor (Model FIT-1005-MCP).
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Theory of Operation
 
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Airflow Measurement Accuracy