OMEGA’s FST-320 Series thermal dispersion flow switches, especially designed for
use with gases, sense changes in the heat transfer characteristics of the gases. Flow
velocities from 1 to 90 fps are effectively monitored. The flow switch incorporates a
standard SPST Relay switch output for control flexibility. The OMEGA®
LVCN-131 and LVCN-141
controllers can easily be interfaced to perform a variety of control functions.
The FST-320 family of sensors can be easily installed in line sizes ranging from
3/4 to 12".
SPECIFICATIONS Range: 1 to 90 fps Accuracy: ±5% of setpoint at constant temperature and flowrate Response time: 10 seconds after initial 30 sec warm up Setpoint Drift with Fluid Temperature: 0.5% per °C Voltage Input: 12-36 Vdc @ 60 mA Contact Output: 1 A SPST Relay, selectable NO or NC states Fluid Temperature: 0 to 60°C (32 to 140°F) Max Fluid Pressure: 150 psi @ 25°C (77°F) derated @ 1.667 psi
per °C above 25°C (77°F) Wetted Materials: PP with PVDF Cable Length: 3 m (10 ft) Max Cable Length: 305 m (1000 ft) Dimensions:76.2 or 114.3 x 26.7 mm dia.(3.0 or 4.5 x 1.05")
† All amounts shown in USD Note: Comes complete with operator’s manual.
To order with 7.62 m (25') cable, add suffix "25" to model number, add $20 to price for PP/PVDF, or $75 for PVDF.
To order with 15.24 m (50') cable, add suffix "-50" to model number, add $40 to price for PP/PVDF or $150 for PVDF.
(OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)
Ordering Example: (1) FST-321-SPST PP/PVDF flow switch for 3/4 to 1-1/2" pipe, with 1 AMP relay, $215.00