Page 1
GENERAL-PURPOSE
AIR VELOCITY TRANSDUCERS
F-113
⻬ Up to 1.5% Accuracy
⻬ Remote Probe Model Available
with 4.6 m (15') Cable
⻬ Each Unit Individually Calibrated
⻬ Durable Fast-Response
Platinum Sensors
⻬ Compact Solid-State Electronics
⻬ Directly Monitors True
Air Mass Velocity
⻬ Linear 0 to 5 Vdc or
4 to 20 mA Output
⻬ 400 msec Response Time
⻬ Economical
Insertion Design
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 flow rate 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
38 mm [1.5"] size) with the use of OMEGA®SSLK
compression fittings (SSLK-14-14, $8.50). PTFE
ferrules are required (T-FER-1/4, $40/10 pack).
Each unit is individually calibrated in OMEGA’s
NIST-traceable wind tunnel.
Suggested power supply; FPW-15, $75.
15 Vdc
INPUT
0 to 5 Vdc or 4 to 20 mA
OUTPUT
DUCT, PIPE
HOOD,
CLEAN BENCH,
ETC
FLOW
10 TO 10,000
SFPM
FLOW
RTD TEMP
SENSOR
RUGGED THERMAL
MASS VELOCITY
SENSOR
COMPRESSION
FITTING
Replacement mating connector, model FMA-3CON, $25.
For compatible meters and controllers,
see the iSeries, Section M.
FMA-900-V Series
$
822
All models
Optional
FMA-902-V, $822,
shown smaller
than actual size.
Page 2
F
F-114
Model No. Price Description
CAL-3-FLOW $225.00 NIST-traceable 4-point calibration certificate
FPW-15 75.00 +15 Vdc power supply
FMA-3CON 25.00 Replacement mating connector
SSLK-14-14 8.50 Compression fitting
T-FER-1/4 40.00 PTFE ferrules (10-pack)
FW-0119 155.00 Reference Book: Flow Measurement
To Order
(Specify Model Number)
Model No. Model No.
0 to 5 V Output Price 4 to 20 mA Output Price Range
FMA-900-V $822 FMA-900-I $882 0 to 100 SFPM
FMA-901-V 822 FMA-901-I 882 0 to 200 SFPM
FMA-902-V 822 FMA-902-I 882 0 to 500 SFPM
FMA-903-V 822 FMA-903-I 882 0 to 1000 SFPM
FMA-904-V 822 FMA-904-I 882 0 to 2000 SFPM
FMA-905-V 822 FMA-905-I 882 0 to 5000 SFPM
FMA-906-V 822 FMA-906-I 882 0 to 10,000 SFPM
Comes with 4-point certificate of compliance, mating connector pre-wired to 4.6 m (15') shielded cable and complete operator’s manual.
To order with 95 mm (3.75") probe instead of standard 330 mm (13") probe, add suffix “-S” to model number and add $30 to price.
To order models with remote probe add suffix “-R” to model number and $30 to price.
Ordering Example: FMA-904-I, probe with 4 to 20 mA output, 0 to 2000 SFPM range, plus CAL-3-FLOW, NIST 4-point calibration certificate,
$882 + 225 = $1107.
SPECIFICATIONS
Accuracy: 1.5% FS @ room temperature
2% at 50°C; 3% at 75°C; 3
1
⁄2% at 100°C;
4% at 121°C; 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 304SS
Probe Temperature:
-40 to 121°C (-40 to 250°F)
Probe Pressure: 150 psig maximum
Electronics Temperature:
Operating: 0 to 50°C (32 to 122°F)
Storage: 0 to 70°C (32 to 158°F)
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 Ω minimum
Current Loop Resistance:
0 Ω minute to 400 Ω maximum; 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)
Accessories: Mating connector prewired to 4.6 m (15') shielded cable (with
built-in ferrite core) included, standard
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 (0.25") O.D.,
330 mm (13") length
Short Probe (-S): 6.35 mm (0.25") O.D.,
95 mm (3.75") length
Weight: 160 g (5.6 oz)
ALL MODELS AVAILABLE FOR FAST DELIVERY!
Accessories
Models with remote probe
add suffix “-R” and $30.
FMA-902-V-R,
$852,shown smaller
than actual size.
Page 3
One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | info@omega.com
EPG05
www.omega.com
UNITED KINGDOM
www. omega.co.uk
Manchester, England
0800-488-488
UNITED STATES
www.omega.com
1-800-TC-OMEGA
Stamford, CT.
CANADA
www.omega.ca
Laval(Quebec)
1-800-TC-OMEGA
GERMANY
www.omega.de
Deckenpfronn, Germany
0800-8266342
Karviná, Czech Republic
FRANCE
www.omega.fr
Guyancourt, France
088-466-342
CZECH REPUBLIC
www.omegaeng.cz
596-311-899
BENELUX
www.omega.nl
Amstelveen, NL
0800-099-33-44
More than 100,000 Products Available!
Temperature
Calibrators, Connectors, General Test and Measurement
Instruments, Glass Bulb Thermometers, Handheld Instruments
for Temperature Measurement, Ice Point References,
Indicating Labels, Crayons, Cements and Lacquers, Infrared
Temperature Measurement Instruments, Recorders Relative
Humidity Measurement Instruments, RTD Probes, Elements
and Assemblies, Temperature & Process Meters, Timers and
Counters, Temperature and Process Controllers and Power
Switching Devices, Thermistor Elements, Probes and
Assemblies,Thermocouples Thermowells and Head and Well
Assemblies, Transmitters, Wire
Flow and Level
Air Velocity Indicators, Doppler Flowmeters, Level
Measurement, Magnetic Flowmeters, Mass Flowmeters,
Pitot Tubes, Pumps, Rotameters, Turbine and Paddle Wheel
Flowmeters, Ultrasonic Flowmeters, Valves, Variable Area
Flowmeters, Vortex Shedding Flowmeters
pH and Conductivity
Conductivity Instrumentation, Dissolved Oxygen
Instrumentation, Environmental Instrumentation, pH
Electrodes and Instruments, Water and Soil Analysis
Instrumentation
Data Acquisition
Auto-Dialers and Alarm Monitoring Systems,
Communication Products and Converters, Data
Acquisition and Analysis Software, Data Loggers
Plug-in Cards, Signal Conditioners, USB, RS232, RS485
and Parallel Port Data Acquisition Systems, Wireless
Transmitters and Receivers
Pressure, Strain and Force
Displacement Transducers, Dynamic Measurement
Force Sensors, Instrumentation for Pressure and Strain
Measurements, Load Cells, Pressure Gauges, Pressure
Reference Section, Pressure Switches, Pressure Transducers,
Proximity Transducers, Regulators,
Strain Gages, Torque Transducers, Valves
Heaters
Band Heaters, Cartridge Heaters, Circulation Heaters,
Comfort Heaters, Controllers, Meters and Switching
Devices, Flexible Heaters, General Test and Measurement
Instruments, Heater Hook-up Wire, Heating Cable
Systems, Immersion Heaters, Process Air and Duct,
Heaters, Radiant Heaters, Strip Heaters, Tubular Heaters
click here to go to the omega.com home page
Loading...