A rapidly reversing magnetic field is produced in the electromagnetic flow sensor’s lower housing.  As the fluid moves through this field, a voltage is generated that is measured by the electromagnetic flow sensor and translated into a frequency signal proportional to flow rate.  This square wave signal can be sent directly to a PLC or other control or can be converted using a blind 4-20mA output or flow rate and totalizer display with the electromagnetic flow sensor.

Designed for modularity and versatility, the EX100/200 series, insertion electromagnetic flow sensors, have an opto isolated square wave pulse output, which can be combined with the appropriate transmitter or indicator depending on the application.  For 4-20mA analog output and digital of the electromagnetic flow sensor’s rate and total measurement the FT420 Pulse and 4-20mA converter can be used.  For a 4-20mA analog output only, the AO55, blind 4-20mA converter, can be connected to the electromagnetic flow sensor.  Both the FT420 or AO55 converter can be directly mounted to the electromagnetic flow sensor or wall mounted in a more convenient location.  If the EX100/200 series, electromagnetic flow sensors, are being used with a programmable controller, the output signal can be fed direct with no other conditioning required.

The electromagnetic flow sensors male adapters mate with standard 1-1/2 inch (101/201) or 2 inch (115/215) FNPT threaded fittings such as saddles and weldolets.  The EX115 and 215 electromagnetic flow sensors include an isolation valve, allowing hot-tap installation, or installation and removal under pressure; a bronze ball valve is standard, with a 316 stainless steel valve option if needed.