FML250 Liquid Flow Monitor

  • Intrinsically safe
  • NEMA 4 Rated Enclosure
  • Operating Temperature: -22 °F to +150 °F

The FML250 Flow Monitor displays both rate and total and integrates seamlessly with any Turbines Inc. flow meter.  Offering a highly customizable display with pulse or 4-20mA outputs, linearizaton and numerous engineering unit options, the FML250 has the versatility to operate in any environment or application.


The FML250 monitor is front keypad programmable, features an LCD display, and allows for 2-40 point linearization for enhanced metering accuracy. The FML250 can calculate flow in multiple engineering units, including mass, BPD, MCF, LPM and GPM.

With the unique features of the FML250’s test menu, Turbines Inc. provides a totalizer with a compliment of diagnostic tools that are unique in the industry.  From calculating an updated K-Factor to testing the 4-20 loop, the FML250 provides information no other rate indicator totalizer offers.


+/- 0.3% reading (rate) or +/- 1 count (total)
Rate display:
Input Impedance:
10k ohms
Factored rate output:
+/- 0.3% reading
Scalable low and high programmable
Loop powered operation (7 .5-36VDC)
Temperature Compensation:
-328° F to +1,000° F
+/- 0.03% (full scale at 75°F)
Operating Temperature:
-22° F to +150° F
Power modes:
External loop powered and reverse polarity protected
Signal Input:
0-6000Hz, 50mV-36V (field adjustable)
CSA, Intrinsic Safety and NEMA4

Support and Service

Our full-time, dedicated service group offers prompt reliable technical support services such as; evaluation, repair and recertification for flow meters including a competitor’s product. Onsite calibration services are performed by our experienced technicians proficient in using the latest test equipment.

If your application requires unique meter and instrumentation features our engineering team will design the appropriate custom equipment.

Our extensive inventory permits rapid shipment, typically within 24 hours, thus minimizing expensive down time.


ISO9001, AS9100, 3A, NIST, NTEP, CTEP, OIML R81/R117/MID, CSA, Intrinsic Safety and Canadian CRN


Worldwide Support

Turbines, Inc. serves customers worldwide with U.S. offices in Cranston, RI (headquarters); Odessa-Midland, TX; Altus, OK; Seneca, SC; and Edmonton, Alberta (Canada).