Product Category

2408i Indicator and Alarm Unit

2408i Indicator and Alarm Unit

The 2408i provides you with accurate indication and alarming of temperature and process measurements. Process interlocks, including over temperature furnace limits, are implemented using relay outputs.

Discontinued: September 2022
End of Service: September 2027


  • Large 5 digit display providing excellent visibility
  • Furnace over temperature limits
  • Extrusion melt pressure indication and alarming
  • Fieldbus communications providing system integration
  • Second process input provide additional alarming strategies
  • Modular construction offering increased I/O flexibility

A universal input allows selection of nine internally stored sensor types. Linear inputs are scaled to the desired range. Other input linearizations may be downloaded at time of order or by using iTools. A fifteen point linearization can be used to provide an accurate indication of non-standard signals

Its large 5 digit display, available in red or green, provides you with clear indication of the process value. An optional second process input allows the average, difference, minimum or maximum of two values to be displayed and alarmed upon.

Up to three I/O modules from a total selection of nine, including relay, logic, analog and transmitter PSU, can be fitted providing excellent flexibility for a wide range of applications.

System integration can be achieved using either conventional analog retransmission or with digital communications. 2408i supports the Modbus protocol in both its serial and Ethernet formats as well as Devicenet and Profibus DP.

Ideal for:

  • Temperature & process indication
  • Process protection
  • Heat treatment  – Furnace over temperature
  • Plastics processing – Extrusion melt pressure
  • Weighing platforms​


  • Universal input
  • Strain gauge input
  • Red or green display
  • Process variable retransmission
  • Serial Modbus™ comms
  • Profibus DP
  • Devicenet


Input Type

Custom, mA, mV, RTD, TC, Volts

Panel size (DIN)


IP Rating


Display Type

Large 5 digit LED

Alarm Types

Dev, Event, Hi, Lo, Rate, Sensor Break

Supply Voltage

24V dc/ac, 85-264V ac

Transmitter Power Supply

24V dc

No of Alarms




PC Configuration

List based

Transducer Power Supply

5/10V dc

User Calibration

15 Point, Auto Tare, Comparison, Load Cell, Shunt

No of Relay Outputs


Digital IP/Logic OP

2 plus possible further 9/9



Custom Messages


Slave Comms

DeviceNet, Modbus RTU, Profibus DP

Melt Pressure


PV Input Selection

Derived, Hi, Lo, Select, Switchover