Dwyer Series EFS2 Insertion Electromagnetic Flow Sensor

Part Number: Series EFS2 Categories: , ,

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The SERIES EFS2 Insertion Electromagnetic Flow Sensor is designed for pipe sizes from 1 to 12″ and comes in three different materials (stainless steel, brass and PVC). There are a variety of custom fittings to choose from to ensure accurate fitting in the pipe. The Series EFS2 is useful for any applications where moving parts would be a problem, such as dirty liquids. It can handle applications where there are rapid changes in viscosity and flow. Other applications include small pipes and chemical metering pumps.

The EFS2 is a liquid flow meter that uses the conductivity of fluids to measure flow rate. Liquid flow through its magnetic field produces a voltage that is measured and translated into an output signal. It has a pulse frequency output which can be used with the Series RTI to indicate flow rate and total, as well as the Series BAT signal converter which provides an analog signal.

• Series BAT, Blind Analog Transmitter, converts pulse output to 4 to 20 mA analog output. Unit is loop powered, fits on the enclosure of the meter, and is fields spannable.
• Series RTI2, Rate Total Indicator, converts pulse output to 4 to 20 mA analog output with local flow rate and totalization display. Unit is loop powered, can fit on the enclosure of the meter, and provides a high/low flow alarm.
• Series PWD, Pulse Divider, for use with pacing electronic metering pumps. Unit divides the input frequency to any number from 1 to 9999 with the use of rotary switches to suit a number of metering pump inputs.

Note: Need to purchase with Series EFF fitting for proper installation.

Product Applications

  • Contaminated liquid flow monitoring
  • Flow of conductive liquids
  • Water & wastewater treatment
  • Industrial systems
  • Irrigation applications
  • Telemetry applications

Service : Compatible clean or dirty non-coating, conductive liquids.

Range : 0.28 to 20 ft/s (0.08 to 6.09 m/s).

Wetted Materials : Sensor: 316 SS, brass or PVC;Electrodes: Hastelloy®, metal;Electrode Cap: PVDF;O-ring: EPDM (fluoroelastomeroptional).

Accuracy : ±1% FS.

Temperature Limits : Process: Brass/SS: 32 to 200°F (0 to 93°C);
PVC: 32 to 130°F (0 to 55°C);Ambient: 0 to 160°F (-17 to 72°C).Pressure Limits:Brass/SS: 200 psi (13.8 bar);PVC: 150 psi (10 bar).

Process Connection : See Series EFF.

Output : Current sinking, square wave pulse, opto-isolated, 550 Hz @ 20 ft/s.

Power Requirements : 12 to 25 VDC @ 250 mA; (12 to 25 VDC @ 40 mA (max. 250 mA) – LOP option).

Electrical Connection : Terminal block.

Conductivity : 20 microSiemens/cm.

Enclosure Material : Housing: Die-cast powder-coated aluminum.

Enclosure Rating : NEMA 4X (IP66).

Weight : 3 lb (1361 g).

  • Long life cycle and less frequent maintenance with no moving parts to wear or break and electrodes that discourage fouling
  • Unaffected by change in temperature, density, viscosity or concentration
  • Pulse output for use with a variety of displays and controllers for remote reading
  • Easy meter mount display and transmitter accessories for local indication and analog 4 to 20 mA output

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