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General-purpose Air Velocity Transducers
FMA-900 Series has been replaced by the FMA1000 Series

General-purpose Air Velocity Transducers
NEW Remote Electronics Opiton (-R)
1.5" Pipes and Larger
1.5% Accuracy
Each Unit Individually Calibrated -
4 Point Certificate of Compliance
Durable Fast-Response Platinum Sensors
Compact Solid-State Electronics
Directly Monitors True Air Mass Velocity
Linear 0-5 Vdc or 4-20 mA Output
400 msec Response Time
Economical Insertion Design


1 Year Warranty

Scroll Below to Order Specs Manuals

NOTE: The FMA-900 Series has been replaced by the FMA1000 Series

The unique FMA-900 air velocity transducer utilizes both a velocity sensor and a temperature sensor to accurately measure air velocity (in SFPM, standard feet per minute). The built-in temperature sensor automatically corrects the flowrate for temperature variations. Both sensors are rugged glass-coated platinum resistance detectors (RTDs). The circuit heats the velocity sensor to a constant temperature differential above ambient temperature and measures the cooling effect of the air flow. This design provides excellent low velocity sensitivity and high accuracy. The FMA-900 also features negligible pressure drop. To obtain mass flowrate in SCFM (standard cubic feet/minute), the SFPM velocity indicated by the FMA-900 is multiplied by the cross-sectional area of the pipe or duct in square feet. A traverse across the pipe or duct can be performed to determine the mounting location for average velocity indication. The FMA-900 can be mounted in pipes (down to 1.5" size) with the use of NEWPORT® SSLK compression fittings (SSLK-14-14). PTFE ferrules are required. (model T-FER- 14). Each unit is individually calibrated in Newport’s NIST-traceable wind tunnel. Suggested power supply; FPW-15

The New Remote Electronics Option (-R) comes with a 12 foot cable from the sensor to a quick disconnect connector and then to the mating connector with two feet of wire which connects directly into the electronics box. The electronics box has another connector on the opposite side with a 15 foot cable with strip leads. A total of 30 feet of cable. Designed for tight spaces.

SPECIFICATIONS
Accuracy: 1.5% FS @ room temp. Add ±0.5% of reading from 0 to 50°C (32° to 122°F); add 1% FS below 1000 SFPM
Repeatability: ±0.2% FS
Initial Stabilization Time in Flow: 40 sec
Response Time/After Stabilization: 400 msec to within 63% of final value at room temperature
Probe: Aluminum oxide ceramic glass coating, epoxy; probe body 304 SS
Probe Temperature: -40 to 121°C (-40 to 250°F)
Probe Pressure: 150 PSIG Max
Electronics Temperature: 0 to 50°C (32 to 122°F), operating; 0 to 70°C (32 to 158°F), storage Operating Relative Humidity: less than 80% RH, without condensation Ambient Temp Compensation: about 5 min for 11°C (20°F) temp change
Outputs: 0 to 5 Vdc or 4 to 20 mA
Voltage Load Resistance: 250 ohms minimum
Current Loop Resistance: 0 ohms min. to 400 ohms max.; 4 wire
Power: 15 to 24 Vdc,300 mA (0 to 100 and 0 to 200 SFPM only); 15 to 18 Vdc, 300 mA (all other ranges)300 mA (0 to 100 and 0 to 200 SFPM only); 15 to 18 Vdc, 300 mA (all other ranges) 300 mA (0 to 100 and 0 to 200 SFPM only); 15 to 18 Vdc, 300 mA (all other ranges)
Accessories: Mating connector pre-wired to 15' shielded cable (with built-in ferrite core) included
Dimensions:
Case: 89 H x 51 W x 31.8 mm D (3.5 H x 2 W x 1.25" D)
Probe: 6.35 mm (0.250") O.D., 330 mm (13") length, optional 3.75" available (-S)
Weight: 160 g (5.6 oz)

Please download PDF file below for full product specifications

NOTE: The FMA-900 Series has been replaced by the FMA1000 Series


Product Selection (Specify Model Number, see variations below in partnumber builder table)
 Part Number   Availability   Price    Description   
 FMA-900-V     Consult sales   Air velocity transducer, 0-5 Vdc Output, 0-100 SFPM  
 FMA-900-I     Consult sales   Air velocity transducer, 4-20mA Output, 0-100 SFPM  
 Accessories
 SSLK-14-14 in-stock    $17.25     Stainless Steel Compression Fitting 1/4in  
 T-FER-1/4 in-stock    $82.00     PTFE Ferrules required for compression fitting 10/pack  
 FPW-15 in-stock    $97.00     15 volts dc power supply  
 FMA-900-CABLE     Consult sales   Replacement 15 Foot cable and connector  
 
All dollar amounts on this site are shown in US currency.

 Note: Comes with 4 point Certificate of Compliance, mating connector pre-wired to 15' shielded cable and complete operator’s manual. To order with 3.75" probe instead of standard 13" probe, add suffix "-S" to model number and add $30 to price. To order the new remote electronics version, add suffix "-R" to model number and add $30 to price. The remote electronics comes with a 15 foot cable from the probe to the electronics box.
 Ordering Example: (1) FPW-15 15 volts dc power supply, (1) SSLK-14-14 Stainless Steel Compression Fitting 1/4", (1) T-FER-1/4 PTFE ferrules (required for SSLK-14-14) Pack of 10 = $196.25
 Part Number Builder
(1) (2)
F
F
M
M
A
A
Option Descriptions
(1) Range
  Select
-900 for 0-100 SFPM
-901 for 0-200 SFPM
-902 for 0-500 SFPM
-903 for 0-1000 SFPM
-904 for 0-2000 SFPM
-905 for 0-5000 SFPM
-906 for 0-10000 SFPM
(2) Model
  Select
-V for 0-5 Vdc Output
-I for 4-20 mA Output
-V-R for 0-5 Vdc Output with Remote Electronics
-I-R for 4-20 mA Output with Remote Electronics
-V-S for 0-5 Vdc Output with 3.75" Lg Probe
-I-S for 4-20 mA Output with 3.75" Lg Probe
-V-S-R for 0-5 Vdc Output with 3.75" Lg Probe and Remote Electronics
-I-S-R for 4-20 mA Output with 3.75" Lg Probe and Remote Electronics
 NOTE: All combinations may not be valid, check spec sheet for valid part numbers.


   
Keywords: General-purpose Air Velocity Transducers, air flowmeter, flow meter, hot wire anemometer, air flow sensor

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