Series FMS Flow Sensor

For Water and Water Based Liquids/Oil and Oil-Based Liquids

This product is no longer available, see Series TDFS2 for a suggested replacement.

Product Applications

  • Perfect for proving flow in boilers, hot water heaters, and chillers.


Water and water based liquids/oil and oil-based liquids.
Wetted Materials:
Sensor Head: 303 SS.
Low Flow Set Point:
Auto set @ 50% / Adjustable via "set" push button.
Set Point Range:
5.0 ft/sec (0-150 cm/sec.)
< 0.5%.
10% of set-point value typical.
Medium Temperature Limits:
-4 to 176°F (-20 to 80°C.)
Pressure Limits:
450 psi (30 bar).
Response Time:
25 seconds (typical).
Supply Voltage:
20-30 VDC (short circuit protected).
Switching Current:
< 200 mA.
Power Consumption:
6 W max.
Electrical Connection:
M12 male socket 4pin. Comes with 6.5 ft (2 m) cable with M12 connector and pigtail.
Process Connection:
1/2" male NPT.
Enclosure Rating:
NEMA 4 (IP65).
Initial Operation:
After 15 seconds.
Switch Type:
PNP N.O. (switch closed with flow), PNP N.C. (switch open with flow).
.55 lb (.25 kg).

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