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Replaced by: TR7439 – Product comparison: TR8430 / TR7439
discontinued article
discontinued article
For 8-pole sockets the core colours are not standardised.
Please note the wiring of the sensor and the sockets (see data sheet).
Date of discontinuation: {{"2017-12-31T00:00:00.000+01:00" | date}}


Evaluation unit with display for PT100/PT1000 temperature sensors


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Dear customer,
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Best regards
Your ifm team

  • Wide temperature evaluation range
  • With four programmable switching outputs
  • Intuitive, user-friendly handling
  • Local display of the current temperature values
  • Automatic recognition of the connected sensor type
  • ce
  • eac
  • cul
Technische Details
Product characteristics
Number of inputs and outputs Number of digital outputs: 4
Measuring range
-40...150 °C -40...302 °F
Process connection threaded connection G 1/2 external thread
Application for Pt100 and Pt1000 measuring elements
Electrical data
Operating voltage [V] 18...28 DC; (according to EN 50178 SELV/PELV)
Current consumption [mA] < 90; (when display is active)
Protection class III
Reverse polarity protection yes
Power-on delay time [s] 1.5
Integrated watchdog yes
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 4
Total number of outputs 4
Output signal switching signal
Electrical design PNP
Number of digital outputs 4
Output function normally open / normally closed; (parameterisable)
Max. voltage drop switching output DC [V] 2
Permanent current rating of switching output DC [mA] 500; (max. value for each single output)
Short-circuit protection yes
Type of short-circuit protection pulsed
Overload protection yes
Measuring/setting range
Measuring range
-40...150 °C -40...302 °F
Set point SP
-39.8...150 °C -39.5...302 °F
Reset point rP
-40...149.8 °C -40...301.5 °F
In steps of
0.2 °C 0.5 °F
Resolution of switching output [K] 0.2
Resolution of display [K] 0.2
Accuracy / deviations
Switch point accuracy [K] ± 0,2
Display accuracy [K] ± (0,2 + ½ Digit)
Temperature drift per 10 K [K] 0.1
Temperature coefficient [% of the span / 10 K] in case of deviation from the reference condition 25 ± 5 °C
Response times
Response time [ms] 200
Software / programming
Adjustment of the switch point programming button
Parameter setting options hysteresis / window; normally open / normally closed; min/max memory reset; Display unit; zero-point calibration
Operating conditions
Ambient temperature [°C] -25...70
Storage temperature [°C] -40...85
Protection IP 67
Tests / approvals
DIN EN 61000-4-2 ESD 4 kV CD / 8 kV AD
EN 61000-4-3 HF radiated 10 V/m
DIN EN 61000-4-4 Burst 2 kV
EN 61000-4-6 HF conducted 10 V
Shock resistance
DIN IEC 68-2-27 50 g (11 ms)
Vibration resistance
DIN EN 60068-2-6 20 g (10...2000 Hz)
MTTF [years] 175
Mechanical data
Weight [g] 265.5
Materials stainless steel (1.4301 / 304); stainless steel (1.4305 / 303); EPDM/X; PC; PBT; FKM
Process connection threaded connection G 1/2 external thread
Displays / operating elements
Display unit 2 x LED, green
switching status 4 x LED, yellow
function display alphanumeric display, 4-digit
measured values alphanumeric display, 4-digit
n.c. = not used
referring to UL: for use on a low voltage circuit with overcurrent protection
in accordance with UL873 tab. 28.1 or Imax = 100/Ub (Ub = voltage of the circuit)
total current rating of the unit: max. 1 A
Two outputs can be switched in parallel to achieve a total current rating of 1 A.
Switch-on points and switch-off points and the programming of the outputs must correspond exactly.
Notes discontinued article; For 8-pole sockets the core colours are not standardised.; Please note the wiring of the sensor and the sockets (see data sheet).
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12; Contacts: gold-plated
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — TR8430-00 — 25.06.2003 —