Filtration Air FMA Series Restriction Sensor For improved air filtration system performance, the NovaSensor FMA Series of Filtration Air Restriction (FAR) Sensors accurately measures pressure loss across a variety of air filtration devices utilizing high accuracy NPA piezoresistive technology in a low-profile form factor that is easy to install and maintenance-free. With configurable thresholds, the FMA Series can be easily installed for use in a variety of applications, including commercial and automotive HVAC and industrial air filters, engine air filtration systems and rooftop units exposed to pressure or vacuum environments. With hydrophobic reference port and sealed connection system, it can also be used in a variety of harsh environmental conditions. The FMA Series is available in multiple positive or vacuum pressure ranges, mating with an integrated AMPSEAL 16 (3-way) electrical connector (Drawing No. C-776402-1-GEN) and a 1/8-27 NPT female pressure connection port. Applications Features * Engine Air Filter Restriction * Supply Voltage: 5VDC * Cabin Pressure * Linear Output: 0.5V to 4.5V (Ratiometric) * HVAC Pressure * Exhaust Pressure * Diagnostic Features (Bridge Connection Checks, Bridge Short Detection, Power Loss Detection) * Industrial Filters * Temperature-Compensated * Sealed AMP Electrical Connector * Multiple Pressure Ranges Available (Vacuum and Pressure) * Fast Response Time * REACH & RoHS Compliant Amphenol Advanced Sensors Technical Specifications Performance Electrical Supply Voltage (VDD) (1) 5 VDC +/-5% Supply Current 5 mA Max Output Voltage (VO) (Ratiometric) 0.5 to 4.5 V (10% to 90% VDD) Output Impedance 250 Ohms Max Over Voltage 28 V Momentary Contact Reverse Voltage 28 V Momentary Contact ESD Rating Contact: 8 kV; Air: 15 kV EMC Compliance RE (150 kHz - 3.2 GHz) CI (30 Hz - 50 kHz) BCI (10 kHz - 400 MHz) RI (100 kHz - 3.2 GHz) Accuracy +/- 2.5% FSO Resolution 0.12% FSO Compensated Temp Range 0C to 80C 0C to 60C for 5"H2O Proof Pressure 2X Full Pressure Burst Pressure 3X Full Pressure Vibration 20-2000Hz AT 11.5 Grms Operating Temp Range -40C to 125C Storage Temp Range -55C to 150C Start-Up Time 10 ms Response Time < 2 ms Intended Media Clean Dry Air Clamp Limits Upper/Lower 92.5% to 7.5% VDD Diagnostic Limits Upper/Lower 97.5% to 2.5% VDD 5" H2O 10" H2O (2) Pressure Ranges Available 40" H2O 1 PSI (2) 5 PSI [1] Use 5 VDC +/- 2.5% for 5" H2O [2] Contact factory for additional custom pressure ranges. Connector Pin Out and Port Thread 2 Transfer Function VDD: Power Supply Voltage Vo: Sensor Output Voltage Zero: Sensor Output Voltage at Zero-scale Pressure FSO: Sensor Output Voltage at Full-scale Pressure FSO Zero Transfer Function Parameters Parameter Unit Typical Output Upper Clipping Limit VDD 92.5% 4.625 V Lower Clipping Limit VDD 7.5% 0.375 V Upper Diagnostic Level VDD 97.5% 4.875 V Lower Diagnostic Level VDD 2.5% 0.125 V 3 Ordering Information FMA Code Description 500 Analog Amplified Output, 5.0 VDC Excitation, Calibrated Code T1 FMA _____ _____ Description Pressure Port, 1/8-27 NPT Female Code Description 05W 5 in H2O (1.25 kPa) 10W 10 in H2O (2.5 kPa)* 40W 40 in H2O (10 kPa) 001 1 PSI (7 kPa)* 005 5 PSI (35 kPa) Code Description GV Vacuum Gage GP Positive Gage _____ _____ - Typical Order Number *Contact factory for additional custom pressure ranges. Amphenol Advanced Sensors www.amphenol-sensors.com (c) 2019 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice. Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. AAS-920-707E - 05/2019