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Ameritrol Electronic Flow Switch, FM Series

FM Flow Switch

Brand: Ameritrol, Inc
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The FM series is designed to provide an extremely reliable flow switch at a very cost effective price.

This series replaces the standard explosion proof enclosure utilized in our FX series with a general-purpose enclosure.

The thermal dispersion principle of operation measures a temperature differential between a heated and a reference temperature sensor.

The differential varies as flow across the sensor changes. This allows the flow switch to detect the increase or decrease of flow of virtually all liquids, gases and slurries.
Features
  • Used in 1/2" Lines and Larger
  • General Purpose Enclosure
  • Operates in Liquids, Gases and Slurries
  • 316L Stainless Steel Sensor
  • Low Cost, Designed for Industrial OEM and End Users
  • No Moving Parts
  • Can Detect Increase or Decrease of Flow

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Specifications

Brand

Accuracy

  • ± 0.5 % of Range at Constant Conditions

Communication

  • Model MC-5 Calibrator

Conduit Connection

  • 1” NPT Female

Electronics - Standard Features

  • Detects Min. Flow or Presence / Absence of Flow
  • Easy / Fast Calibration

Enclosure Finish

  • Powder-Coated

Enclosure, Body Material

  • 316L Stainless Steel

Flange Material

  • 316L Stainless Steel

Input Power

  • 117 Vac (90-135 Vac)
  • 12 Vdc (+30 %, -10 %)
  • 24 Vdc or Vac (± 10 %)

Insertion 'U' Length

  • 1.2” (3 cm)
  • 1.8” (4.6 cm)
  • Custom Lengths in inches

NPT Connection

  • 1” NPT Male
  • 1/2” NPT Male
  • 3/4” NPT Male

Operating Pressure - Sensor

  • Vacuum to psig: 4,000 (bar: 275, MPa: 27.5)

Operating Temperature - Electronics

  • -46° to 65° C (-50° to 150° F)

Operating Temperature - Sensor

  • -46° to 121° C (-50° to 250° F)

Principle of Operation

  • Thermal, Calorimetric

Response Time

  • From 3 seconds

Sensor, Probe Style

  • Insertion

Switch Point Range

  • Gases: 0.05 to 500 FPS, 0.015 to 152 MPS
  • Hydrocarbon-based Liquids: 0.02 to 10 FPS, 0.006 to 3.04 MPS
  • Water-based Liquids: 0.02 to 5 FPS, 0.006 to 1.5 MPS

Switch Type

  • SPDT 2A Resistive

Wetted Materials

  • 316L Stainless Steel

  • Low Flow Shut Down of Pumps
  • Flow Indication/Verification
  • Pump or Valve Seal Leakage
  • Bearing Lubrication Flow Sensor
  • HVac Flow Monitor
  • Safety Shower Flow Switch

Documentation

Data Sheets

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