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Replaced by: TN2511 – Product comparison: TN2531 / TN2511

discontinued article
discontinued article
Date of discontinuation: {{"2017-12-31T00:00:00.000+01:00" | date}}


Temperature sensor with display


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Dear customer,
Unfortunately, this data sheet is not available in the requested language. If you have any further questions, you can contact us by e-mail.

Best regards
Your ifm team

  • Wide temperature evaluation range
  • With programmable switching output and scalable analogue output
  • Intuitive, user-friendly handling
  • Local display of the current temperature values
  • ce
  • eac
  • cul
Technische Details
Product characteristics
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Measuring range
-40...150 °C -40...302 °F
Process connection threaded connection M18 x 1,5 internal thread
Installation length EL [mm] 45
Special feature Gold-plated contacts
Measuring element 1 x Pt 1000; (to DIN EN 60751, class B)
Media liquids and gases
Pressure rating [bar] 300
Minimum installation depth [mm] 12
Electrical data
Operating voltage [V] 18...32 DC; ("supply class 2" to cULus)
Current consumption [mA] < 50
Protection class III
Reverse polarity protection yes
Power-on delay time [s] 1
Integrated watchdog yes
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Total number of outputs 2
Output signal switching signal; analogue signal; IO-Link; (configurable)
Electrical design PNP/NPN
Number of digital outputs 1
Output function normally open / normally closed; (parameterisable)
Max. voltage drop switching output DC [V] 2
Permanent current rating of switching output DC [mA] 250
Number of analogue outputs 1
Analogue current output [mA] 4...20
Max. load [Ω] (Ub - 10 V) x 50
Analogue voltage output [V] 0...10
Min. load resistance [Ω] 2000
Short-circuit protection yes
Type of short-circuit protection pulsed
Overload protection yes
Measuring/setting range
Probe length L [mm] 45
Measuring range
-40...150 °C -40...302 °F
Set point SP
-39.5...150 °C -39...302 °F
Reset point rP
-40...149.5 °C -40...301 °F
Analogue start point
-40...145 °C -40...293 °F
Analogue end point
-35...150 °C -31...302 °F
In steps of
0.1 °C 0.1 °F
Resolution of switching output [K] 0.1
Resolution of analogue output [K] 0.1
Resolution of display [K] 0.1
Accuracy / deviations
Switch point accuracy [K] ± 0,3
Precision analogue output [K] ± 0,3
Display accuracy [K] ± 0,3
Temperature drift per 10 K [K] 0.1
Response times
Dynamic response T05 / T09 [s] 1 / 3; (to DIN EN 60751)
Max. measuring/display cycle [ms] 200
Software / programming
Adjustment of the switch point programming button
Transmission type COM2 (38,4 kBaud)
IO-Link revision 1.0
Operating conditions
Ambient temperature [°C] -25...70
Storage temperature [°C] -40...100
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
DIN EN 61000-4-5 Surge 1 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] 209
Mechanical data
Weight [g] 202.8
Housing compact type for adapter
Materials stainless steel (1.4301 / 304); PBT; PC; EPDM/X; FKM
Materials (wetted parts) stainless steel (1.4404 / 316L); O-ring: FKM 80 Shore A
Process connection threaded connection M18 x 1,5 internal thread
Installation length EL [mm] 45
Displays / operating elements
Display unit 2 x LED, green
switching status LED, yellow
measured values alphanumeric display, 4-digit
programming alphanumeric display, 4-digit
The values for accuracy apply to flowing water.
Notes discontinued article
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 — TN2531-00 — 10.07.2013 —