Item no. 857-800

Temperature signal conditioner for RTD sensors; Current and voltage output signal; Configuration via DIP switch; Supply voltage: 24 VDC; 6 mm module width; light gray


Short description:

This temperature signal conditioner records Pt100, Pt200, Pt500, and Pt1000 Sensors, as well as resistors up to 4.5 kOhm, converting the temperature signal into a standard analog signal on the output side.


  • For Pt100, Pt200, Pt500 and Pt1000 sensors, as well as resistors up to 4.5 kOhm
  • 2-, 3-, and 4-wire connection technology.
  • Switching between measurement ranges is calibrated
  • Detect wire break/sensor short circuit
  • Detect measurement range underflow/measurement range overflow
  • Integrate a switchable clipping function to limit the standard analog signal to the upper range values
  • Safe 3-way isolation with 2.5 kV test voltage per EN 61140

Product details


Technical Data

Configuration options DIP switches
Input signal type Pt sensors
Input – RTD sensors
Sensor types (RTD) Pt100
Sensor connection 2-wire; 3-wire; 4-wire (switchable)
Max. sensor supply current (RTD) ≤ 0.5 mA
Measurement range temperature (RTD) -200 … 850°C
Input – Resistors
Input range resistance 0 … 1 kΩ; 0 … 4.5 kΩ
Output – Analog
Output signal type Current
Output signal voltage 0 … 5 V; 1 … 5 V; 0 … 10 V; 2 … 10 V
Output signal current 0 … 10 mA; 2 … 10 mA; 0 … 20 mA; 4 … 20 mA
Load impedance (output/voltage) ≥ 2 kΩ
Load impedance (output/current) ≤ 600 Ω
Signal processing
Step response typ. 180 ms (2-wire); 360 ms (3-wire)
Measurement error
Transmission error typ. ≤ 0.1 % at max. measuring span
Transmission error of set measurement range ≤ ((10 K/set measurement range [K]) + 0,1) %
Temperature coefficient ≤ 0.02 %/K
Power supply
Type of power supply 24 VDC
Nominal supply voltage US DC 24 V
Supply voltage range ±30 %
Current consumption at supply voltage ≤ 40 mA
Safety and protection:
Test voltage (input/output/supply) AC 2.5 kV; 50 Hz; 1 min
Protection class IP20

Connection data

Connection technology Push-in CAGE CLAMP®
Solid conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Fine-stranded conductor 0.34 … 2.5 mm² / 22 … 14 AWG
Strip length 9 … 10 mm / 0.35 … 0.39 inch

Geometrical Data

Width 6 mm / 0.236 inch
Height from upper-edge of DIN-35 rail 97.8 mm / 3.85 inch
Depth 94 mm / 3.701 inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Color light gray
Weight 35.3 g

Environmental Requirements

Surrounding air (operating) temperature -25 … 70 °C
Surrounding air (storage) temperature -40 … 85 °C

Standards and specifications

Conformity marking CE
EMC immunity to interference EN 61000-6-2
EMC emission of interference EN 61000-6-4

Commercial data

Product Group 6 (Interface Electronics)
Packaging type bag
Country of origin DE
GTIN 4045454470128
Customs Tariff No. 85437090300

Approvals / Certificates


Additional Approval Text
Certificate name
Approval: IECEx
TUEV Nord Cert GmbH
Additional Approval Text IEC 60079-0
Certificate name: IECEX_TUN_14.0030_X
Approval: IECEx
TUEV Nord Cert GmbH
Additional Approval Text EN 60079-0
Certificate name: TÜV_14_ATEX_112692_X
Approval: UL
UL International Germany GmbH (HAZARDOUS LOCATIONS)
Additional Approval Text ANSI/ISA 12.12.01
Certificate name: E198726 Sec.4

Ship Approvals

Additional Approval Text
Certificate name
Approval: BV
Bureau Veritas S.A.
Additional Approval Text -
Certificate name: 40179_A0
Approval: DNV GL
Det Norske Veritas, Germanischer Lloyd
Additional Approval Text -
Certificate name: TAA00001D1
Approval: NK
Nippon Kaiji Kyokai
Additional Approval Text -
Certificate name: TA17255M
Approval: PRS
Polski Rejestr Statków
Additional Approval Text -
Certificate name: TE/2186/880590/18


Additional Approval Text
Certificate name
Approval: UL
UL International Netherlands B.V. (ORDINARY LOCATIONS)
Additional Approval Text UL 508
Certificate name: E175199 Sec.4


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Marking accessories

Power supplies

Interface module

Installation Notes

1 picture

Configuration via DIP switches

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1 picture

Commoning, not discrete wiring – same outline allows the use of a single in-line, push-in jumper

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