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electromed.co.in · industrial display solutions
Buying guide

Which input signal do I need? 4–20 mA, Modbus or pulse

The input is the signal your sensor, transmitter or PLC sends to the display.

Most Electromed indicators and boards accept standard industrial signals. Check what your instrument sends, then confirm the input on the product datasheet.

SignalWhat it isTypical source
4–20 mAAnalog current loop. 4 mA is the bottom of the range and 20 mA is the top.Transmitters for level, pressure, temperature, flow
0–10 V / 0–2 VAnalog voltage signal.Some sensors and controllers
Modbus RS485Digital serial protocol. Several devices share one cable.PLCs, energy meters, drives
Modbus TCP/IPModbus over an Ethernet network.PLCs and SCADA on a LAN
PulseOne pulse per unit counted.Flow sensors, proximity sensors, counters
Things to check

Mixed signals

Multi-channel boards can take different signal types on different channels of the same board.

Sensors

We can supply PT100 temperature sensors, J or K thermocouples, magnetic and photoelectric sensors, and current transformers.

Before you order

Ask what signal your PLC or SCADA outputs. Send it to us with the range and units.

Related products
Process IndicatorMulti Channel DisplayModbus Display All questions and answers
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