iTEMP TMT82 temperature transmitter

The iTEMP TMT82 is a highly reliable, accurate and long-term stable temperature transmitter for industrial processes requiring high availability. The versatile 2-channel device converts universal sensor inputs such as thermocouples or RTD into stable, scalable 4 to 20 mA output signals and HART® communication. With its built-in smart sensor monitoring capability and diagnostic status information according to NAMUR NE 107, the SIL 2, SC3 certified transmitter increases process safety and uptime.

HART® temperature transmitter as head, field or DIN rail device with two universal sensor inputs suitable for use in hazardous areas and SIL 2. Safe operation in hazardous areas; International approvals such as FM, CSA, ATEX, EAC, NEPSI, IECEx, DNV GL. 2-channel universal signal inputs: RTD, thermocouple, resistance (Ω) and voltage transmitters (mV), HART® 7 protocol. Suited for use in marine applications. Installation in explosion proof field housings; Protection class up to IP 68. Fits in flat-face terminal heads as per DIN EN 50446. Cabinet or DIN rail mounting; width: 17.5 mm.

Benefits

  • Robust temperature transmitter delivering precise, long-term stable measurements for high plant availability
  • SIL certification up to SIL2, SC3 according to IEC 61508:2010
  • Versatile mounting and housing options: terminal head form B, DIN rail, field housing with separate terminal compartment, integrated display (TID10)
  • Transmitter-sensor matching for highest measurement accuracy
  • Sensor and hardware failure detection; diagnostic status information according to NAMUR NE 107
  • Time-saving installation: Tool-free wiring with push-in terminal technology

Measuring principle

Head transmitter

Input

2 x RTD, TC, Ohm, mV

Output

1 x analog 4…20 mA / HART

Auxiliary power supply

11…42 V DC (head transmitter)

12…42 V DC (Din rail device)

11/12…30 V DC (Ex ia)

Communication

HART-protocol

Installation

Terminal head form B, DIN-Rail housing or field mount housing

Accuracy

(Pt100, -50…200 °C) <= 0,1 K

(Pt100, -58…392 °F) <= 0,18 °F

Galvanic isolation

yes

Certification

ATEX Ex ia, Ex ic, Ex tb, Ex tc, Ex nA, Ex d

ATEX IECEx Ex ia

IECEx Ex ia, Ex tb, Ex d

CSA C/US General Purpose

CSA IS, NI, XP, DIP

FM IS,NI, XP, DIP

FM+CSA IS, NI

INMETRO Ex ia [ia Ga], Ex d, Ex tb

NEPSI Ex ia, Ex d, Ex tb, Ex ec

EAC Ex ia, Ex d

UKCA Ex ia, Ex tb, Ex tc, Ex nA, Ex db

Features

  • Dual‐channel input: supports two independent sensor inputs (e.g., two RTDs or two thermocouples) for redundancy or differential/average measurement.
  • Universal sensor input types: RTD (Pt100, Pt200, Pt500, Pt1000 etc.), thermocouples (TC), resistance (Ω), and voltage (mV).
  • Output: Analog 420 mA loop plus digital communication via HART® (HART® 7 protocol) in the standard version.
  • High accuracy: For Pt100 in range –50…+200 °C the accuracy is  0.1 K.
  • Advanced diagnostics: Sensor monitoring (open/short circuits, wiring errors), corrosion detection of sensor wiring (NAMUR NE 89), diagnostics in line with NAMUR NE 107.
  • Functional safety certification: SIL 2 / SC3 compliant (hardware/software) per IEC 61508.
  • Flexible mounting/housing: Can be installed in terminal head (DIN EN 50446 Form B), DINrail housing or field housing including Ex d mounting.
  • Wide approval list for hazardous areas: ATEX, IECEx, FM, CSA, NEPSI, EAC etc.
  • Protective rating and ruggedness: Options up to IP68 for field mounting.