Indicator & Alarm Unit - Type 4T96 | Gefran

Gefran 4T96 Process Indicator Unit

The Gefran 4T96 is a microprocessor-based temperature indicator, 96×48 mm (1/8 DIN), designed for panel door mounting. It is not a PID controller; its primary function is local indication of process value (PV) from a temperature sensor or linear process signal. The Lexan front panel provides IP65 protection, features three keys, and a red LED display with either 3 digits plus sign or 4 digits.

Measurement Inputs

Input configuration is performed via the front panel and terminal selection, without external shunt or adapter. Supported inputs include thermocouples J, K, R, S, T, B, E, N, L-GOST, U, G, D, C; RTD Pt100/JPt100 (2 or 3-wire), PTC, NTC, and linear signals (mV, V, mA).

Ranges and Accuracy

Accuracy is 0.2% f.s. ±1 digit. Sampling time is 120 ms for temperature sensors, adjustable down to 15 ms for linear inputs (with reduced resolution). Linear scale is configurable from -1999 to 9999 (4-digit) or -999 to 999 (3-digit with sign).

Configuration and Auxiliary Supply

Parameter protection via code, 32-segment linearisation, and programming via serial/PC kit are supported. Depending on model, auxiliary supply options include 24 Vdc / 50 mA, 15 Vdc / 50 mA for transmitters, or 1.2 Vdc for potentiometer supply.

Typical Applications

• Temperature indication on extrusion lines
• Rubber presses and thermal machinery
• Test benches and laboratory setups
• Food processing equipment
• Thermometry and hygrometry with appropriate transmitter

Operating Conditions and Standards

Power supply: 100–240 Vac/dc or 11–27 Vac/dc. Operating temperature: 0–50 °C; storage: -20–70 °C; humidity: 20–85% RH, non-condensing. UKCA declaration references EN 63000:2018, EN 61326-1:2013, and EN 61010-1:2010.