iTemp TMT182B

Summary

Product identification

• Product Name: iTEMP TMT182B
• Product Type: Temperature transmitter
• Protocol: HART®

Application

The iTEMP TMT182B is a universal temperature transmitter featuring HART® communication. It converts various input signals into a scalable, analog 4-20 mA output signal. Key characteristics include reliability, long-term stability, high precision, and advanced diagnostic functions suitable for critical processes. It is designed for enhanced safety, reliability, and risk reduction.

The device offers universal input for:

• Resistance thermometers (RTD)
• Thermocouples (TC)
• Resistance transmitters (Ω)
• Voltage transmitters (mV)

It is designed for installation in a terminal head, form B (flat face).

Input

Measured variable

• Temperature (with temperature-linear transmission behavior)
• Resistance
• Voltage

Measuring range

Resistance Thermometers (RTD):

• IEC 60751:2022:
  • Pt100: –200 to +850 °C
  • Pt200: –200 to +850 °C
  • Pt500: –200 to +500 °C
  • Pt1000: –200 to +250 °C
  • Min. span: 10 K
• JIS C1604:1984:
  • Pt100: –200 to +510 °C
  • Min. span: 10 K
• DIN 43760 IPTS-68:
  • Ni100: –60 to +250 °C
  • Ni120: –60 to +250 °C
  • Min. span: 10 K
• GOST 6651-94:
  • Pt50: –185 to +1100 °C
  • Pt100: –200 to +850 °C
  • Min. span: 10 K
• OIML R84:2003, GOST 6651-2009:
  • Cu50: –180 to +200 °C
  • Cu100: –180 to +200 °C
  • Ni100: –60 to +180 °C
  • Ni120: –60 to +180 °C
  • Cu50: –50 to +200 °C
  • Min. span: 10 K

Resistance Transmitter:

• 10 to 400 Ω
• 10 to 2 000 Ω
• Min. span: 10 Ω

Thermocouples (TC):

• IEC 60584, Part 1 / ASTM E230-3:
  • Type A: 0 to +2 500 °C
  • Type B: +40 to +1 820 °C
  • Type E: –250 to +1 000 °C
  • Type J: –210 to +1 200 °C
  • Type K: –270 to +1 372 °C
  • Type N: –270 to +1 300 °C
  • Type R: –50 to +1 768 °C
  • Type S: –50 to +1 768 °C
  • Type T: –200 to +400 °C
  • Min. span: 50 K
• IEC 60584, Part 1 / ASTM E988-96:
  • Type C: 0 to +2 315 °C
  • Type D: 0 to +2 315 °C
  • Min. span: 50 K
• DIN 43710:
  • Type L: –200 to +900 °C
  • Type U: –200 to +600 °C
  • Min. span: 50 K
• GOST R8.585-2001:
  • Type L: –200 to +800 °C
  • Min. span: 50 K

Voltage Transmitter (mV):

• –20 to 100 mV
• Min. span: 5 mV

Sensor connections

• RTD/Ω: 2-wire, 3-wire, or 4-wire connection. Sensor current: ≤ 0.3 mA.
  • 2-wire: Compensation of wire resistance up to 30 Ω possible.
  • 3-wire and 4-wire: Sensor wire resistance up to max. 50 Ω per wire.
• TC/mV: Maximum sensor wire resistance 10 kΩ.

Output

• Analog Output: 4 to 20 mA, 20 to 4 mA (invertible)
• Signal Encoding: FSK ±0.5 mA via current signal
• Data Transmission Rate: 1200 baud
• Galvanic Isolation: U = 2 kV AC for 1 minute (input/output)
• Failure Information: As per NAMUR NE43. Configurable underranging (≤ 3.6 mA) or overranging (≥ 21 mA) for sensor failures.
• Load: Rb max.= (Ub max. - 10 V) / 0.023 A (current output)
• Linearization/Transmission Behavior: Temperature-linear, resistance-linear, voltage-linear
• Filter: 1st order digital filter, 0 to 120 s

Protocol-specific data (HART®)

• Manufacturer ID: 17 (0x11)
• Device Type ID: 0x11D2
• HART® Specification: 7
• Device Address: Software setting addresses 0 to 63 (multi-drop mode)
• HART Load: Minimum 250 Ω
• HART Device Variables: Primary value (PV), Sensor (measured value), SV, TV, QV (device temperature, sensor value)
• Minimum Starting Voltage: 10 VDC
• Start-up Current: 3.58 mA
• Start-up Time: 7 s
• Minimum Operating Voltage: 10 VDC
• Multidrop Current: 4.0 mA
• Time for Connection Setup: 9 s

Power supply

• Non-hazardous areas: 10 to 36 VDC (protected against polarity reversal)
• Hazardous areas: See Ex documentation.
• Current Consumption: 3.6 to 23 mA (minimum 3.5 mA, current limit ≤ 23 mA)

Electrical connection

• Terminals: Screw terminals
• Cable Cross-section: ≤ 1.5 mm² (16 AWG)

Performance characteristics

• Response Time: ≤ 1 s (for RTD, Ω, TC, mV)
• Refresh Time: Approx. 100 ms
• Reference Operating Conditions: Calibration temperature +25 °C ±3 K, Supply voltage 24 V DC, 4-wire circuit for resistance adjustment.
• Maximum Measured Error: Data provided for various RTD types, thermocouples, and resistance transmitters based on digital and analog output, with typical and standard values. See the official PDF for exact tabulated values.

Installation

• Mounting Location: Terminal head, form B (flat face) as per DIN EN 50446, or on DIN rail using an adapter clip.
• Orientation: No restrictions.

Environment

• Ambient Temperature: –40 to +85 °C (for hazardous areas, see Ex documentation)
• Storage Temperature: –50 to +100 °C
• Operating Altitude: Up to 4 000 m above sea level
• Humidity: Max. 95% relative humidity (non-condensing), permitted.
• Climate Class: C1 as per IEC 60654-1
• Degree of Protection: IP 20 with screw terminals (installed state depends on terminal head/housing).

Mechanical construction

• Weight: 40 to 50 g
• Materials: All materials are RoHS-compliant.
  • Housing: Polycarbonate (PC)
  • Terminals: Screw terminals, nickel-plated brass and gold-plated or tin-plated contacts
  • Potting: QSIL 553

Operability

• Remote Operation: Configuration via HART® communication or CDI interface using dedicated configuration tools.

Certificates and approvals

• HART® Certification: Registered by the FieldComm Group™, meets HART® Communication Protocol Specifications, Revision 7.
• MTTF: 168 years

Accessories

Various accessories are available, including:

• Device-specific: Field housing TA30x, DIN rail mounting adapter, DIN mounting set, US M4 securing screws.
• Communication-specific: Commubox FXA195, Commubox FXA291, WirelessHART adapter, Field Xpert SMT70 tablet PC.
• Service-specific: Applicator software, Product Configurator software, DeviceCare SFE100, FieldCare SFE500.
• System Components: RN22 active barrier, RN42 active barrier, RIA15 process display.

Disclaimer: This summary is based on extracted text and may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror