iTherm Compactline TM311

Summary

Product identification

• Product: iTHERM CompactLine TM311
• Type: Metric/imperial, compact RTD 4 to 20 mA/IO-Link thermometer for industrial and hygienic applications
• Document ID: TI01439T/09/EN/05.25-00
• Part Number: 71703224

Applications

• Universal use in hygienic and aseptic applications within the food & beverages and pharmaceutical industries.
• Standardization for machine and skid builders.

Operating limits

• Measuring range: –50 to +200 °C (–58 to +392 °F)
• Pressure range: Up to 50 bar (725 psi)
• Protection class: IP69

Feed water

The document does not specify feed water parameters.

Product water

The document does not specify product water parameters.

Electrical

• Output (Without electronics): Pt100 (4-wire connection)
• Output (With electronics): IO-Link, 4 to 20 mA, 1 × PNP switch output (depending on connection type)
• Supply voltage (Electronic version): Ub = 10 to 30 VDC, protected against reverse polarity. IO-Link communication requires at least 15 VDC.
• Switching capacity (PNP): Ia ≤ 200 mA (ON), Ia ≤ 10 µA (OFF).
• Switch cycles: > 10,000,000
• Voltage drop (PNP): ≤ 2 V
• Input current required: ≤ 3.5 mA for 4 to 20 mA; ≤ 9 mA for IO-Link.
• Maximum current consumption: ≤ 23 mA for 4 to 20 mA.
• Switch-on delay: 2 s
• IO-Link: Version 1.1, COM2 (38.4 kBaud), Minimum cycle time 10 ms.

Mechanical / hydraulic

• Design: Compact, made entirely of stainless steel.
• Connection: M12 connection with IP69 protection.
• Thermowell diameter: 6 mm (¹⁄₄ in)
• Material: AISI 316L (corresponds to 1.4404 or 1.4435). Recommended max. temperature for continuous use in air: 650 °C (1202 °F).
• Surface roughness: Ra ≤ 0.76 µm (30 µin) for standard surface, mechanically polished.
• Weight: 0.2 to 2.5 kg (0.44 to 5.5 lbs) for standard versions.
• Process connections: Various types available including compression fittings, weld-in adapters, clamps, and milk pipe connections. See the official PDF for exact tabulated values.

Performance characteristics

• Measured error (Pt100 Cl. A, without electronics): ≤ 0.55 °C (0.99 °F) maximum.
• Measured error (Pt100 Cl. A, with electronics): ≤ 0.48 °C (0.86 °F) maximum digital.
• Measured error (with sensor-transmitter-matching): ≤ 0.14 °C (0.25 °F) maximum digital.
• Long-term drift (IO-Link): ± 9 mK (1 month) to ± 31 mK (5 years).
• Long-term drift (Current output): ± 2.5 µA (1 month) to ± 8.8 µA (5 years).
• Response time T63 (iTHERM TipSens, direct contact): 1 s.
• Response time T90 (iTHERM TipSens, direct contact): 1.5 s.
• Electronics response time: Max. 1 s.

Environment

• Ambient temperature range: –40 to +85 °C (–40 to +185 °F)
• Storage temperature: –40 to +85 °C (–40 to +185 °F)
• Operating altitude: Up to 2,000 m (6,600 ft) above sea level.
• Degree of protection: IP69.
• Shock and vibration resistance: Meets IEC 60751 requirements (3 g in the 10 to 500 Hz range).
• Electromagnetic compatibility (EMC): In accordance with IEC/EN 61326 series and NAMUR Recommendation NE21.

Certificates and approvals

• 3-A mark
• EHEDG certification
• ASME BPE conformity
• FDA
• EC 1935/2004
• EN 2023/2006
• TSE/ADI
• GB4806-2016 and GB9685-2016
• Marine approval according to DNV GL
• Device safety according to EN 61010-1 and cCSAus
• Electromagnetic compatibility as per NAMUR NE21
• Diagnostics information according to NAMUR NE43

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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