Digital 2-wire transmitter for thermocouple with wireless communication
- Type: Digital
- Input: TC
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
 Datasheet |
Digital 2-wire transmitter for thermocouple with wireless communication
- Type: Digital
- Input: TC
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
| Datasheet |
Digital 2-wire transmitter for Pt100 and Pt1000 with wireless communication
- Type: Digital
- Input: RTD
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
| Datasheet |
Digital 2-wire transmitter for Pt100 and Pt1000 with wireless communication
- Type: Digital
- Input: RTD
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
| Datasheet |
Universal HART-compatible 2-wire transmitter with NFC
- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA, HART-protocol
- Isolation: Isolated
- Measuring channels: 1 channel
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HART Compatible Universal Dual-input 2-wire Transmitters
- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA, HART®
- Isolation: Isolated
- Measuring channels: 2 channels
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Analog Adjustable 2-wire Transmitters
- Type: Analog
- Input: RTD, thermocouple
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
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- Type: Digital
- Input: RTD
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
| Datasheet |
Basic Programmable 2-wire Transmitter
- Type: Digital
- Input: RTD, thermocouple
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
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- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA
- Isolation: Isolated
- Measuring channels: 1 channel
| Datasheet |
- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA, HART®
- Isolation: Isolated
- Measuring channels: 2 channels
| Datasheet |
- Type: Analog
- Input: RTD
- Output: 0-10 V
- Isolation: Unisolated
- Measuring channels: 1 channel
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- Typ: Digital
- Eingang: RTD, Thermoelement, Universal
- Ausgang: 4-20 mA
- Galvanische Trennung: Ja
- Messkanäle: 1 Kanal
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- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA, 0-10 V
- Isolation: Isolated
- Measuring channels: 1 channel
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- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA, HART-protocol
- Isolation: Isolated
- Measuring channels: 1 channel
| Datasheet |
- For the connection of Pt100 and Pt1000 sensors in a 2-, 3- or 4-wire connection
- For the connection of reed chains in a potentiometer circuit
- Parameterisation with the WIKAsoft-TT configuration software and electrical connection via quick connector magWIK
- Connection terminals also accessible from the outside
- Accuracy < 0.2 K (< 0,36 °F) / 0.1 %
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Digital transmitter to be built into own equipment
- Type: Digital
- Input: RTD
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
- Easy configuration via DIP switch or via INOR-Set
- Switchable service functions for easy commissioning
- 3-port isolation Protection against measurement errors due to earthing problems and interference voltage carry-over
- Extremely slim design 6.2 mm narrow bayed housing for simple and space-saving top-hat rail mounting
- Optional in-rail bus mounting rail connector allows fast and cost-effective installation
- Safe isolation according to EN 61140 Protection of maintenance personnel and downstream equipment from impermissibly high voltage
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| Flyer |
| User Manual |
Digital transmitter to be built into own equipment
- Type: Digital
- Input: RTD
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
Digital transmitter to be built into own equipment
- Type: Digital
- Input: RTD
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
- Type: Analog
- Input: RTD
- Utgång: 0-10 V
- Isolation: Unisolated
- Measuring channels: 1 channel
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- Type: Analog
- Input: RTD, thermocouple
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
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| Type | Head mounted |
| Input | RTD |
| Input RTD | Pt100 |
| Type of transmitter | Digital |
| Output | 4-20 mA |
| Isolation | Unisolated |
| Measuring channels | 1 channel |
| Sensor connection | 3-wire connection |
| Power Supply | Standard version: 6 to 32 VDC Ex version: 8 to 30 VDC |
| Typical accuracy | Max. ±0.1K or ±0,1 % of span |
| Approvals (IPAQ-C202X) | ATEX: II 1G Ex ia IIC T6…T4 Ga IECEx: Ex ia IIC T6…T4 Ga |
| Datasheet |
- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA
- Isolation: Isolated
- Measuring channels: 1 channel
| Datasheet |
- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA
- Isolation: Isolated
- Measuring channels: 1 channel
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Basic Programmable 2-wire Transmitter
- Type: Digital
- Input: RTD thermocouple
- Output: 4-20 mA
- Isolation: Unisolated
- Measuring channels: 1 channel
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- For the connection of all standard thermocouples
- High accuracy
- Parameterisation with the WIKAsoft-TT configuration software and electrical connection via quick connector magWIK
- Connection terminals also accessible from the outside
- EMC stability in compliance with the latest standard (EN 61326-2-3:2013)
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- TÜV certified SIL version for protection systems developed per IEC 61508 (option)
- Operation in safety applications to SIL 2 (single instrument) and SIL 3 (redundant configuration)
- Configurable with almost all soft- and hardware tools
- Universal for the connection of 1 or 2 sensors
- Resistance thermometer, resistance sensor
- Thermocouple, mV sensor
- Potentiometer - Signalling in accordance with NAMUR NE43, sensorbreak detection in accordance with NE89, EMC in accordance with NE21
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- Model OTMT84: PROFIBUS® PA profile 3.02
- Model OTMT85: FOUNDATION™ Fieldbus H1
- Explosion-protected version Ex ia (intrinsically safe/FISCO) and Ex ec available
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- Versions for Pt100 / Pt1000 or thermocouples
- Output 0 ... 10 V, 3-wire (T91.10) or 4 ... 20 mA, 2-wire (T91.20)
- Error signalling in the event of sensor break
- High accuracy
- Compact and value for money
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- Type: Digital
- Input: RTD, thermocouple, Universal
- Output: 4-20 mA
- Isolation: Isolated
- Measuring channels: 1 channel
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- Connection heads
- Thermo junction
- Connector
- Fixing materials
- Extension protecting tubes
- Calibration block
- Miniature fixed-point cell
- Reference junction
- Transmitter
- Digital thermometer
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Accessories & Transmitters – reliable signals for precise temperature measurement
Accessories and transmitters extend temperature probes (RTD/thermocouples) with robust connections, EMC-safe signal transmission, and digital communication. Choose from head and field transmitters, DIN-rail modules, enclosures, cable glands, connectors, thermowells, mounting kits, as well as power supplies and surge protection.
Outputs/interfaces: 4–20 mA (2- and 3-wire), 0–10 V, HART, RS-485/Modbus RTU, IO-Link—optionally with galvanic isolation, sensor break/short detection, linearization, and Namur NE43/NE107 diagnostics.
ICS Schneider Messtechnik supports design, parameterization, calibration (ISO/DAkkS), hazardous area selection, and integration into PLC/SCADA/IIoT.
FAQ about Accessories & Transmitters
Answers on selection, wiring, EMC, diagnostics, Ex, Namur, calibration, and integration.
Which sensors do the transmitters support?
RTDs (Pt100/Pt1000, Ni100/Ni120; 2/3/4-wire) and thermocouples (Types K/J/T/N/E/R/S/B) incl. cold junction compensation for TCs.
When to use head, field, or DIN-rail transmitters?
- Head (Form B): close to the probe, short sensor leads, compact.
- Field: IP-rated, local parameterization, long cable runs.
- DIN-rail: control cabinet, easy wiring/supply.
What signals/interfaces are common?
| Type | Description | Use case |
|---|---|---|
| 4–20 mA | current loop, 2-wire | industrial standard, noise-immune |
| 0–10 V | voltage output | short runs, high input impedance |
| HART | digital over 4–20 mA | parameterization/diagnostics |
| RS-485/Modbus | digital serial | multi-drop, long distances |
| IO-Link | point-to-point | sensor data & events, IIoT |
2/3/4-wire for Pt100—what to choose?
| Variant | Advantage | Disadvantage | Recommendation |
|---|---|---|---|
| 2-wire | simple, low cost | lead resistance error | very short runs |
| 3-wire | good compromise | requires lead symmetry | industry standard |
| 4-wire | highest accuracy | more complex | test/QC measurements |
How long can sensor cables be?
RTD: keep short; 3/4-wire compensates lead errors. TC: longer runs possible—use thermocouple extension cable and ensure a proper cold junction.
How does galvanic isolation help?
It suppresses ground loops/EMC coupling and protects the controller. Recommended for multiple ground potentials or long cable runs.
Which diagnostic functions are useful?
Sensor break/short, out-of-range, cold junction fault (TC), internal reference fault, and NE107 status (Failure, Function Check, Out of Spec, Maintenance).
What does Namur NE43 define?
Standardized fault currents: e.g., ≤ 3.6 mA (low) or ≥ 21.0 mA (high) for error signaling—simplifies PLC/DCS evaluation.
How do I set linearization/characteristics?
RTD per IEC 60751 (α = 0.00385), TC per IEC 60584. Many transmitters support custom 2-point/multi-point linearization.
EMC effects—how to protect?
Use shielded, twisted pairs, single-ended shield bonding, equipotential bonding, spacing from power cables, clean 24 V/signal segregation, optionally ferrites.
What IP ratings are available?
Head/field housings typically IP65–IP69K. For wash-down use hygienic seals and suitable cable glands with strain relief.
What power supply is required?
2-wire 4–20 mA typically 12–30 V DC (device dependent). Check transmitter compliance voltage and total loop load.
Filtering/averaging—why use it?
To suppress noise and process spikes. Options: digital low-pass, moving average, peak/valley-hold—tune to process dynamics.
How do I integrate transmitters into IIoT?
Via HART multiplexers, Modbus gateways, or IO-Link masters → edge gateway → MQTT/HTTPS into SCADA/cloud. Security: TLS/VPN, roles, audit logs.
Calibration intervals and proof?
Rule of thumb annually, quality-critical semi-annually. Keep traceable certificates (ISO/DAkkS); monitor drift/trends in the historian.
Use in hazardous (Ex) areas (ATEX/IECEx)?
Use Ex i (intrinsically safe) or Ex d (flameproof) devices. Observe zone, temperature class, marking, and suitable barriers.
SIL/functional safety—what to consider?
Check transmitter failure rates/diagnostic coverage per the SIL data, define proof-test intervals, and enable NE43 fault currents.
Which housings/connectors do you recommend?
Form-B heads with terminal/transmitter, M12/M8 connectors for fast service, PG/metric glands with sealing inserts, optional surge protection.
Typical failure modes & remedies?
- Drift → recalibrate/verify
- Noise → shielding/filtering
- Offset → check linearization/cold junction
- Dropouts → check terminals/supply/EMC
Do you support selection & parameterization?
Yes. We define the signal chain, diagnostics, filters, and scaling, and deliver devices pre-configured with calibration certificates.