Analytical Instrumentation & Environmental Monitoring


Loop-powered transmitters

July 2003 Analytical Instrumentation & Environmental Monitoring

GLI has produced a series of inexpensive loop-powered indicating transmitters, available from PREI Instrumentation. They have been designed for either pH/ORP, conductivity (contacting or electrodeless), flow or dissolved oxygen, and can be panel mounted, surface mounted, or integrally mounted on a GLI sensor.

The main features of these instruments are their low price, compact size, NEMA 4X rating, and their menu-guided operation for set-up, calibration and operation. The LCD display shows the measured parameter, the temperature and the 4 to 20 mA analog output signal, and the power supply can be 2, 3 or 4-wire connected. They are CE compliant, approved for hazardous areas, and the calibration settings are protected by a pass code. These easy-to-use GLI transmitters have become well established in many industries where PLCs or scada systems are used to control plant.

For more information contact Steve Herbst, PREI Instrumentation, 011 448 2172, [email protected]



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