RTD TR66, TC66

Summary

Product Identification

• Product Name: TR66 Resistance thermometer (RTD) / TC66 Thermometer with thermocouple (TC)
• Type: Modular thermometer, explosion-protected, barstock thermowell, with thread or flange.

Applications

• Heavy duty applications
• Oil & Gas processing industry

Operating Limits

• Measuring Range (RTD): –200 to 600 °C (–328 to 1,112 °F)
• Measuring Range (TC): –40 to 1,100 °C (–40 to 2,012 °F)
• Static Pressure Range: Up to 100 bar (1,450 psi)
• Degree of Protection: Up to IP68

Feed Water

• Process Temperature Range: –200 to +1,100 °C (–328 to +2,012 °F) (depends on sensor type and thermowell material)
• Process Pressure Range: See official PDF for exact tabulated values.
• Permitted Flow Velocity: Dependent on immersion length, medium, process temperature, and process pressure. Diagrams provided for water and superheated steam at 4 MPa (40 bar).

Product Water

• Insulation Resistance: ≥ 100 MΩ at ambient temperature (measured with 100 V DC).

Electrical

• Output Signal:
  • Analog output: 4 to 20 mA
  • HART®
  • PROFIBUS® PA
  • FOUNDATION Fieldbus™
  • PROFINET® and Ethernet-APL (for head transmitter)
• Power Supply: Details depend on the specific head transmitter used. The RN221N active barrier is mentioned as an example (24 V DC, 30 mA, 20 to 250 V DC/AC, 50/60 Hz input).
• Sensor Connection Types:
  • RTD: 2-, 3-, and 4-wire configurations supported.
  • Thermocouple (TC): Supported.
• Electromagnetic Compatibility (EMC): Depends on the head transmitter used.

Mechanical / Hydraulic

• Modular Design: Standard terminal heads as per DIN EN 50446.
• Thermowell: Made from round barstock, available in various materials and dimensions. Standard thermowell diameters (Q1) range from 20 or 25 mm (0.79 or 0.98 in). Maximum total length (A) is 1,200 mm (47.3 in).
• Process Connection: Threaded or flanged.
  • Threaded: ¾" NPT, 1" NPT.
  • Flanged: 1”, 1½”, 2” ANSI 150, 300, or 600 lb RF SO.
• Terminal Heads:
  • TA30A: Degree of protection IP66/68. Temperature range –50 to +150 °C. Material: Aluminum or Stainless Steel.
  • TA30H: Flameproof (XP) version. Degree of protection IP66/68 (Ex: IP66/67). Temperature range –50 to +150 °C. Material: Aluminum or Stainless Steel 316L.
• Extension Neck: Standard length 69 mm (2.72 in) or 109 mm (4.3 in) for N type, 148 mm (5.83 in) for NUN type. Material: AISI 316 or A105.
• Weight: 1.5 to 5.5 kg (3.3 to 12.1 lbs) for standard versions.
• Materials (Wetted Parts/Thermowell):
  • AISI 316/1.4401
  • AISI 316L/1.4404
  • AISI 316Ti/1.4571
  • AISI A105/1.0460
  • Alloy 600/2.4816
  • Alloy 400
• Surface Roughness: Standard Ra = 1.6 µm for wetted parts.

Performance Characteristics

• Accuracy:
  • Thermocouples: Tolerances specified per IEC 60584 and ASTM E230/ANSI MC96.1 (Standard and Special tolerances for Class 1 and 2).
  • RTD (Pt100): Tolerances specified per IEC 60751 (Cl. A, Cl. AA, Cl. B).
• Self-Heating (RTD): Negligible when used with Endress+Hauser iTEMP temperature transmitters.
• Response Time: Examples provided for t₅₀ and t<0xE2><0x82><0x90> values with specific thermowell configurations in running water.
  • 20 mm thermowell tip, 34s (t₅₀), 105s (t<0xE2><0x82><0x90>)
  • 25 mm thermowell tip, 37s (t₅₀), 115s (t<0xE2><0x82><0x90>)
• Shock and Vibration Resistance: Exceeds IEC 60751 requirements (3g at 10-500 Hz). Specific resistance varies by sensor type: >30 m/s² for Pt100 (WW) and TC, >40 m/s² for Pt100 (TF), >600 m/s² for iTHERM StrongSens Pt100 (TF).
• Calibration: Available, traceable to national and international standards (ITS90). Calibration can be performed on the insert or the entire thermometer. Range: –80 to +1,400 °C.

Installation

• Orientation: No restrictions.
• Immersion Length: Influences accuracy; at least half the pipe diameter recommended for pipe installations. Detailed installation examples and rules (e.g., h ~ d; U > D/2 + h) are provided.

Environment

• Ambient Temperature Range:
  • Terminal head without transmitter: Depends on terminal head, cable gland, etc.
  • Terminal head with transmitter: –40 to 85 °C (–40 to 185 °F).
  • Terminal head with transmitter and display: –20 to 70 °C (–4 to 158 °F).

Certificates and Approvals

• Information on available approvals can be found via the Endress+Hauser Configurator.
• Standards compliance includes IEC 60529, IEC/EN 61010-1, IEC 60751, IEC 60584, ASTM E230/ANSI MC96.1, DIN 43772, DIN EN 50446.
• Thermowell testing according to DIN 43772.
• Factory calibration is ISO/IEC 17025 accredited.

Supplementary Documentation

• Brief Operating Instructions (KA)
• Operating Instructions (BA)
• Safety Instructions (XA)
• Functional Safety Manual (FY/SD)

Disclaimer: 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