iTherm Moduline TM152

Summary

Product identification

• Product name: iTHERM ModuLine TM152
• Product type: Industrial modular thermometer

Application

• Universal use
• Measuring range: –200 to +1 100 °C (–328 to +2 012 °F)
• Pressure range: up to 500 bar (7 252 psi)

Features and Benefits

• Easy maintenance and recalibration of the thermometer; sensor can be replaced without interrupting the process.
• Dual seal technology for process seal with failure indication.
• iTHERM QuickSens for fast response times (1.5 s).
• iTHERM StrongSens for exceptional vibration resistance (> 60g).
• iTHERM QuickNeck for tool-free removal and recalibration.
• International certifications: ATEX, IECEx, CSA, INMETRO; SIL.
• iTEMP temperature transmitter with common communication protocols and optional Bluetooth®.

Measuring Principle

• Resistance thermometers (RTD): Use Pt100 sensors (100 Ω at 0 °C, α = 0.003851 °C⁻¹). Available as wire-wound (WW) or thin-film (TF).
• Thermocouples (TC): Utilize the Seebeck effect. Standardized types include J, K, and N.

Modular Design Components

1. Terminal head: Available in aluminum, polyamide, or stainless steel. Optional display available.
2. Wiring/Output signal: Ceramic terminal block, flying leads, or head transmitter (4 to 20 mA, HART®, IO-Link®, PROFIBUS® PA, FOUNDATION™ Fieldbus, PROFINET over Ethernet-APL™).
3. Plug or cable gland: Various options including PROFIBUS® PA/FOUNDATION™ Fieldbus/IO-Link® plugs and polyamide cable glands.
4. Removable extension neck: Options include QuickNeck, DualSeal, and nipple connections.
5. Lagging: Ensures distance between thermometer connection and process connection.
6. Process connection: Variety of options including threads, flanges (ASME), and socket weld.
7. Thermowell: Versions with and without thermowells, various diameters, materials, and tip shapes.
8. Central-spring-loaded insert:
   • 8a: iTHERM QuickSens
   • 8b: iTHERM StrongSens
   • Sensor models: RTD (WW, TF) or thermocouples (K, J, N). Insert diameters: ⌀6.35 mm (¹⁄₄ in) or ⌀6 mm (0.24 in).

Input

• Measured variable: Temperature
• Measuring range: Depends on sensor type.
  • Pt100 thin film (TF), basic: –50 to +200 °C
  • Pt100 thin film (TF), iTHERM QuickSens: –50 to +200 °C
  • Pt100 thin film (TF), standard: –50 to +400 °C
  • Pt100 thin film (TF), iTHERM StrongSens: –50 to +500 °C
  • Pt100 wire wound (WW), extended: –200 to +600 °C
  • Thermocouple TC, type J: –40 to +750 °C
  • Thermocouple TC, type K: –40 to +1 100 °C
  • Thermocouple TC, type N: (Measuring range not specified in extract)

Output

• Output signal: Directly-wired sensors or via iTEMP transmitter with various protocols (4 to 20 mA, HART®, PROFIBUS® PA, FOUNDATION™ Fieldbus, PROFINET, IO-Link®).
• Family of temperature transmitters: iTEMP head and field transmitters are available, offering improved accuracy, reliability, and reduced costs.

Power Supply

• Sensor connection wires are equipped with terminal lugs (nominal diameter 1.3 mm (0.05 in)).

Terminal Assignment

• Detailed diagrams are provided for RTD and Thermocouple sensor connections, including various transmitter types (TMT7x, TMT31, TMT36, TMT8x, TMT162, TMT142B) and wiring configurations (4-, 3-, and 2-wire).

Overvoltage Protection

• Optional overvoltage protection from the HAW product family is available to protect electronics.
• Connection data:
  • Maximum continuous voltage (rated voltage): U<0xE1><0xB5><0x9C> = 36 VDC
  • Nominal current: I = 0.5 A at Tamb. = 80 °C (176 °F)
  • Surge current resistance: I<0xE1><0xB5><0x96><0xE1><0xB5><0x89><0xE1><0xB5><0x98> = 1 kA (per wire), I<0xE2><0x82><0x99> = 5 kA (per wire) / 10 kA (total)
  • Temperature range: –40 to +80 °C (–40 to +176 °F)
  • Series resistance per wire: 1.8 Ω, tolerance ±5 %

Terminals

• iTEMP head transmitters use push-in terminals unless screw terminals are specified.
• Terminal design: Screw terminals (≤ 1.5 mm² (16 AWG)) and Push-in terminals (0.2 to 1.5 mm²).

Cable Entries

• Selection during device configuration. Options vary by terminal head.

Plug-in Connectors

• Wide variety for integration. Thermocouples are not recommended for direct connection to plug-in connectors.

Performance Characteristics

• Reference conditions: Data relevant for iTEMP transmitter accuracy.
• Maximum measurement error (RTD as per IEC 60751):
  • Class B: ± (0.3 + 0.005 · |t| ) °C
  • Class A: ± (0.15 + 0.002 · |t| ) °C
  • Class AA: ± (0.1 + 0.0017 · |t|) °C
  • (¹ |t| = absolute temperature value in °C)
• Temperature ranges for accuracy classes:
  • Pt100 (WW): Class B up to +600 °C, Class A up to +600 °C, Class AA up to +450 °C.
  • Pt100 (TF) Basic: Class B up to +200 °C, Class A up to +200 °C, Class AA up to +200 °C.
  • Pt100 (TF) Standard: Class B up to +400 °C, Class A up to +400 °C, Class AA up to +250 °C.
  • Pt100 (TF) iTHERM QuickSens: Class B up to +200 °C, Class A up to +200 °C, Class AA up to +200 °C.
  • Pt100 (TF) iTHERM StrongSens: Class B up to +500 °C, Class A up to +500 °C, Class AA up to +300 °C.

Influence of Ambient Temperature

• Depends on the head transmitter used.

Self-Heating

• Negligible when using Endress+Hauser iTEMP transmitters.

Calibration

• Methods: Fixed points or comparison against a reference thermometer.
• Sensor-transmitter-matching: Service offered by Endress+Hauser to improve accuracy using Callendar-van Dusen (CvD) coefficients.
• Standard calibrations: Offered from –80 to +600 °C.

Insulation Resistance

• RTD: > 100 MΩ at +25 °C (100 V DC).
• TC: > 1 GΩ at +20 °C, > 5 MΩ at +500 °C (500 V DC).

Installation

• Orientation: No restrictions, but self-draining is recommended.
• Installation instructions: Immersion length is critical for measurement accuracy. Recommend immersion length of at least half the pipe diameter.

Environment

• Ambient temperature range:
  • Without head transmitter: Depends on terminal head.
  • With iTEMP head transmitter: –40 to +85 °C (–40 to +185 °F).
  • With iTEMP head transmitter and display: –20 to +70 °C (–4 to +158 °F).
• Storage temperature: –40 to +85 °C (–40 to +185 °F).
• Humidity: Condensation permitted; Max. 95% relative humidity.
• Climate class: EN 60654-1, Class C.
• Degree of protection: Max. IP 66 (NEMA Type 4x), partly IP 68.
• Shock and vibration resistance: Inserts exceed IEC 60751 requirements.
  • Pt100 (WW): ≤ 30 m/s² (≤ 3g)
  • Pt100 (TF) Basic/Standard: ≤ 40 m/s² (≤ 4g)
  • Pt100 (TF) iTHERM StrongSens: 600 m/s² (60g)
  • Pt100 (TF) iTHERM QuickSens (⌀6 mm): 600 m/s² (60g)
  • Pt100 (TF) iTHERM QuickSens (⌀3 mm): ≤ 30 m/s² (≤ 3g)
  • Thermocouple TC: ≤ 30 m/s² (≤ 3g)
• Electromagnetic compatibility (EMC): In accordance with IEC/EN 61326 series and NAMUR NE21. Interference emission Class B.

Process

• Process temperature range: –200 to +1 100 °C (–328 to +2 012 °F). For fast-response thermowell: –200 to +400 °C.
• Process pressure range: Depends on design, connection, and temperature. Maximum possible pressures for individual connections are detailed in the "Process connection" section.
• Permitted flow velocity: Decreases with increasing immersion depth.

Process Connection

• Standard:
  • Weld-in/socket weld: ≤ 500 bar (7 252 psi)
  • Flange ASME B16.5: Depending on flange pressure rating.
  • Thread (ISO, ASME, DIN): 140 bar (2 031 psi) at +40 °C (+140 °F); 85 bar (1 233 psi) at +400 °C (+752 °F).

Mechanical Construction

• Design, dimensions: Variable depending on configuration. Key dimensions include immersion length (U), lagging length (T), and extension neck length (E).
• Thermowell bottom thickness: Default 6.35 mm (0.25 in).

Disclaimer: Extraction may miss figures, footnotes, or revisions; contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

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