Omega Products FST1001AS User Manual
ECONOMICAL AIR FLOW SWITCH
FST1000 Series
Starts at
$
265
Air Velocity Range up to
10,000 FPM (50.8 m/sec)
250 msec Response Time
2% Full Scale Accuracy
Two Sensor Probe
Configurations (Fixed
and Remote)
Hot Wire Air Velocity
Sensor Design
Adjustable High and Low
Alarm Set-Points
Two SPST Relay Contact
Closures with Red LED
Indicators
Used in HVAC Monitoring,
Exhaust/Ventilation Hoods
The FST1000 Series measures air
velocity and provides two SPST relay
contact closures corresponding to
high and low alarm set points. The
alarm set points are adjustable from
0 to 100% of the air flow range. The
unit comes with a green power LED,
and two red LEDs for high and low
alarm indications. They can be used
in research and development labs,
HVAC applications, exhaust/
ventilation hoods and other
manufacturing processes. The sensor
design is based on RTD elements;
the air velocity is measured by the
heat loss from the RTD sensor as it
cools down by the air flow. The
sensor probe comes in two
configurations, fixed mount and
remote probe.
To Order (Specify Model Number)
Model No. Price Range FPM (m/sec) Description
FST1001A(*) $265 0 to 5000 (0 to 25.4) Air velocity switch, 2 relay outputs, fixed probe
FST1001R(*) 295 0 to 5000 (0 to 25.4) Air velocity switch, 2 relay outputs, remote probe
FST1002A(*) 265 0 to 10,000 (0 to 50.8) Air velocity switch, 2 relay outputs, fixed probe
FST1002R(*) 295 0 to 10,000 (0 to 50.8) Air velocity switch, 2 relay outputs, remote probe
Accessories
Model No. Price Description
TX8-100 $95 8 conductor shielded cable, PVC insulation, 30.5 m (100') spool
PSR-24S 60 Regulated 24 Vdc @ 400 mA power supply, screw terminal
PSR-24L 60 Regulated 24 Vdc @ 400 mA power supply, stripped leads
SSLK-14-14 15 Compression fitting
T-FER-1/4 75 ¼" PTFE ferrules (10 pack) for use with SSLK-14-14 compression fitting
Comes complete with 305 mm (12") long sensor probe (or remote probe), and operator’s manual.
(*) For 95 mm (3.75") short probe, add suffix “-S”, no additional charge.
Ordering Example: FST1001A, air velocity switch, 0 to 5000 FPM range, 2 relay outputs, and fixed probe, $265.
Measuring air flow and providing relay output in a
ventilation hood.
SPECIFICATIONS
Air Velocity Range: 0 to 5000,
0 to 10,000 FPM
Accuracy: 2% FS (air velocity)
Air Velocity Probe: ¼" OD stainless
steel, 305 mm L (12"), or remote probe
with 4.6 m (15') of shield cable
High and Low Alarm Set Point:
Adjustable from 0 to 100% of air
flow range
Alarm Indication: Red LEDs on the
back plate
Alarm Deadband: 5% of FS
Built-In Relays: Two 12V SPST NO
relays (high and low)
Contact Rating: 10A @ 24 Vdc,
10A @ 250 Vac
Operating Ambient Temperature:
Sensor Probe: -40 to 121ºC
(-40 to 250ºF)
Electronic Case: 0 to 50ºC
(32 to 122ºF)
Power Indicator: Green LED
Power: 15 to 24 Vdc @ 200 mA
Dimensions: 89 H x 51 W x 31.8 mm D
(3.5 x 2 x 1.25")
Weight: 160 g (5.6 oz)
MOST POPULAR MODELS HIGHLIGHTED!
B-1
B
Fixed
probe
FST1001A,
$265.
Terminal
connection
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