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FT & FIT-1001 Series Air Volume/Velocity Transducers
FT & FIT-1001 Series transducers include Models FT-1001, FT-1001-ZV, FIT-1001-D, FIT-1001-DZV, FIT-1001-M, and FIT-1001-MZV. FT & FIT-1001 Series are differential pressure transducers with a square root extractor, scaling multiplier, and output filter complete in a single package. The differential pressure transducer sensor operates on the capacitance principal and is capable of sensing ultra low differential (velocity) pressures. In the capacitance cell, a very lightweight, responsive diaphragm deflects a small amount when pressure is applied. This deflection results in a change in capacitance, which is then detected and processed electronically into an output signal linear to the velocity pressure. The electronic signal is then sent to the square root extractor/multiplier, which converts the velocity pressure signal into an analog output linear to velocity (fpm) or volume (cfm). The FIT Series includes 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 (indicated by a “D” in the model number) or an independent front panel mounted magnehelic pressure gauge scaled in both cfm and fpm (indicated by a “M” in the model number). The independent magnehelic gauge readout allows for quick and immediate verification that the electronic transducer is operating effectively. An optional built-in three-way manual zeroing valve for ease of zero verification and calibration can also be furnished (indicated by a “ZV” in the model number). Each FT & FIT-1001 Series transducer is selected and factory calibrated to meet the design requirement of the flow measuring element being served. Model FT & FIT-1001 Series Technical Data Sheet
FT & FIT-1003 Series Air Volume/Velocity Transducers
FT & FIT-1003 Series transducers include Models FT-1003, FT-1003-ZV, FIT-1003-D, FIT-1003-DZV, FIT-1003-M, and FIT-1003-MZV. FT & FIT-1003 Series are differential pressure transducers with a square root extractor, scaling multiplier, and output filter complete in a single package. The differential pressure transducer sensor operates on the capacitance principal and is capable of sensing ultra low differential (velocity) pressures. In the capacitance cell, a very lightweight, responsive diaphragm deflects a small amount when pressure is applied. This deflection results in a change in capacitance, which is then detected and processed electronically into an output signal linear to the velocity pressure. The electronic signal is then sent to the square root extractor/multiplier, which converts the velocity pressure signal into an analog output linear to velocity (fpm) or volume (cfm). The FIT Series includes 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 (indicated by a “D” in the model number) or an independent front panel mounted magnehelic pressure gauge scaled in both cfm and fpm (indicated by a “M” in the model number). The independent magnehelic gauge readout allows for quick and immediate verification that the electronic transducer is operating effectively. An optional built-in three-way manual zeroing valve for ease of zero verification and calibration can also be furnished (indicated by a “ZV” in the model number). Each FT & FIT-1003 Series transducer is selected and factory calibrated to meet the design requirement of the flow measuring element being served. Model FT & FIT-1003 Series Technical Data Sheet
FT & FIT-1005 Air Volume/Velocity Transducers
FT & FIT-1005 Series transducers include Models FT-1005, FIT-1005-M, and FIT-1005-MCP. FT & FIT-1005 Series are differential pressure transducers with a square root extractor, scaling multiplier, and output filter complete in a single package. The differential pressure transducer sensor operates on the capacitance principal and is capable of sensing ultra low differential (velocity) pressures. In the capacitance cell, a very lightweight, responsive diaphragm deflects a small amount when pressure is applied. This deflection results in a change in capacitance, which is then detected and processed electronically into an output signal linear to the velocity pressure. The electronic signal is then sent to the square root extractor/multiplier, which converts the velocity pressure signal into an analog output linear to velocity (fpm) or volume (cfm). The FIT Series includes 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 (indicated by a “M” in the model number). The independent magnehelic gauge readout allows for quick and immediate verification that the electronic transducer is operating effectively. An optional constant volume purge feature prevents contaminants from migrating to the differential pressure sensor (indicated by a “CP” in the model number). Each FT & FIT-1005 Series transducer is selected and factory calibrated to meet the design requirement of the flow measuring element being served. Model FT & FIT-1005 Series Technical Data Sheet
MicroTrans Differential Pressure and Airflow Signal Processor
MicroTrans Technical Data Sheet
APS-1000 Master Blaster
The Master Blaster is an automatic high pressure and high volume purging system. It has been designed specifically for Pitot tube airflow measurement applications having high levels of moisture and/or airborne particulate that may foul the measurement ports of the primary flow element. The systematic high-pressure high-volume back purging maintains flow measurement accuracy that would otherwise degrade due to sensor port fouling or vapor condensing within the velocity averaging manifolds. Pulsing high-pressure air through the primary element is the most effective means available for dislodging and removing accumulated particulate from the sensing ports as well as eliminating condensation from building up. The back-purge process is automatically initiated at preset intervals utilizing a 7-day programmable time clock. Sequencing of the isolation and purge valves, plus the back-purge duration are controlled using a Programmable Logic Controller (PLC). Both the frequency and duration of the back-purge is field adjustable through firmware. The valve sequencing is established through factory software programmed into the PLC’s non-volatile flash EPROM. During the back-purge cycle the airflow signal processor is isolated from the primary flow element’s output signal lines. While in the purge mode the flow transducer output is locked and maintained at the last given value to prevent the system controller from responding to a loss of process feedback signal. Once the purge duration has expired, the PLC will delay the deenergizing of the transducer isolation valves until the compressed air has completely bled-down from the primary element’s signal lines.
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