iTherm Moduline TM401

Summary

Product Identification

• Product Name: iTHERM ModuLine TM401
• Product Type: Resistance thermometer for hygienic and aseptic applications
• Technology: Basic technology, metric version

Applications

• Hygienic and aseptic applications in the Food & Beverages and Life Sciences industries.
• Suitable for use in non-hazardous areas.

Operating Limits

• Measuring Range: –50 to +200 °C (–58 to +392 °F)
• Pressure Range: Up to 50 bar (725 psi) - Note: Maximum pressure is dependent on the specific process connection.
• Protection Class: Up to IP69K

Feed Water

• Medium - State of Aggregation: Gaseous or liquid (including high viscosity media like yogurt).

Product Water

• Not applicable for this product.

Measuring Principle

• Resistance thermometers (RTD) using a Pt100 temperature sensor according to IEC 60751.
• The sensor has a resistance of 100 Ω at 0 °C (32 °F) and a temperature coefficient α = 0.003851 °C⁻¹.
• Available sensor types include thin-film platinum resistance thermometers (TF).

Output & Communication

• Output Signal:
  • 4 to 20 mA analog output, HART®
  • HART® SIL transmitter (optional)
  • PROFINET® over Ethernet-APL
  • IO-Link®
• Transmitters offer enhanced measurement accuracy and reliability.

Electrical

• Power Supply: Details provided in wiring diagrams; dependent on transmitter type.
• Overvoltage Protection: HAW562 and HAW569 surge arresters are available.

Performance Characteristics

• Maximum Measurement Error (RTD):
  • Class A: ± (0.15 + 0.002 · |t|) °C
  • Class AA: ± (0.1 + 0.0017 · |t|) °C
  • Class B: ± (0.3 + 0.005 · |t|) °C
  • Note: |t| is the absolute temperature value in °C.
• Self-heating: Negligible when using Endress+Hauser iTEMP temperature transmitters.
• Response Time (t50 / t90):
  • 1x Pt100 thin-film sensor, Ø6 mm: 5 s / 11 s
  • Reduced tip 4.5 mm x 18 mm: 3.5 s / 9 s
  • Ø8 mm, reduced tip 5.3 mm x 20 mm: 5 s / 10.5 s
  • Note: Response time without transmitter.
• Insulation Resistance: ≥ 100 MΩ at ambient temperature, measured between terminals and outer jacket with ≥ 100 VDC.

Mechanical Construction

• Material: AISI 316L (corresponds to 1.4404 or 1.4435) with a recommended max. temperature for continuous use in air of 650 °C (1202 °F).
• Surface Roughness (wetted surfaces):
  • Standard surface, mechanically polished: Ra ≤ 0.76 µm (30 µin)
  • Mechanically polished, buffed: Ra ≤ 0.38 µm (15 µin)
• Weight: 0.5 to 2.5 kg (1 to 5.5 lbs) for standard options.

Terminal Heads

• Various terminal head types (TA30A, TA30R, TA30S) available with different degrees of protection, temperature ranges, and materials.
• TA30A: IP66/68, –50 to +150 °C, aluminum.
• TA30R: IP69K, –50 to +130 °C, stainless steel 316L.
• TA30S: IP65, –40 to +85 °C, polypropylene (PP), FDA-compliant.

Process Connections

• Sanitary Connection (DIN 11851): Available for DN25, DN32, DN40, DN50. Maximum pressure up to 40 bar (580 psi) for DN25-DN40, and 25 bar (363 psi) for DN50.
• Metal Sealing System: M12x1.5, G3/8", G1/2" threads. Maximum pressure 16 bar (232 psi) for thermowell diameters 6 mm and 8 mm.
• Clamp (ISO 2852): Specific dimensions and properties detailed in the full document.
• Other connections: Varivent®, Liquiphant-M weld-in adapter.

Certificates and Approvals

• Hygiene standards: 3-A, EHEDG, ASME BPE, FDA, TSE.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror