Process Indicators

A process indicator is a panel-mount digital device that scales the analog signal from a pressure, level, flow or temperature transmitter and shows it on its display in engineering units. It is used in machine and plant panels so the operator can read the process value on site and, in models with relay outputs, so an alarm contact is obtained when the set limit is exceeded. In this category, the Enda EI2041 and EI7041 series are available in housings such as 77x35 mm and 72x72 mm, with a 12 V DC or 24 V DC sensor supply output, relay and alarm outputs and RS485 Modbus communication versions. Select the indicator by the output signal of your transmitter, whether the sensor supply output will be 12 V DC or 24 V DC, the relay and alarm output requirement, supply voltage and panel cut-out dimension. Models with a sensor supply output can power the transmitter without a separate power source; verify the output current from the manufacturer data. A process indicator is not a PID temperature controller; it shows the value and, in the relay model, gives a contact when a limit is exceeded, but it does not continuously adjust a heater or valve according to the setpoint.

Products

How to choose Process Indicators

A process indicator is a panel-mount digital device that scales the analog signal from a pressure, level, flow or temperature transmitter and shows it on its display in engineering units. It is used in machine and plant panels so the operator can read the process value on site and, in models with relay outputs, so an alarm contact is obtained when the set limit is exceeded.

  • Separate sensing, motion control, logic processing and operator interface requirements.
  • Select signal type, supply voltage, communication protocol and I/O count for the machine network.
  • Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.

Frequently asked questions

What is Process Indicators and where is it used?

A process indicator is a panel-mount digital device that scales the analog signal from a pressure, level, flow or temperature transmitter and shows it on its display in engineering units. It is used in machine and plant panels so the operator can read the process value on site and, in models with relay outputs, so an alarm contact is obtained when the set limit is exceeded.

What should I compare when choosing Process Indicators?

Select the indicator by the output signal of your transmitter, whether the sensor supply output will be 12 V DC or 24 V DC, the relay and alarm output requirement, supply voltage and panel cut-out dimension.

Where can I find technical details for Process Indicators products?

A process indicator is not a PID temperature controller; it shows the value and, in the relay model, gives a contact when a limit is exceeded, but it does not continuously adjust a heater or valve according to the setpoint.

Process Indicators Selection Guide: Technical Criteria and Engineering Practice