RTD T13, T14, T15

Summary

Product Identification

• Model Series: T13, T14, T15
• Description: Explosion proof RTD assemblies in thermowells with spring loaded insert and enclosure for process industry.
• Document: TI00126R/09/EN/16.23-00

Application

• Heavy duty applications in chemicals, petrochemicals, refineries, and offshore platforms.
• Protection Class: IP66/67

Operating Limits

• Measuring Range: -200 to 600 °C (–328 to 1,112 °F)
• Ambient Temperature Range (Terminal Head):
  • Without mounted head transmitter: Depends on terminal head and cable gland.
  • With mounted head transmitter: –40 to 85 °C (–40 to 185 °F)
  • SIL mode (HART 7 transmitter): –40 to 70 °C (–40 to 158 °F)
• Ambient Temperature Range (Terminal Head with Display):
  • With mounted head transmitter and display: –20 to 70 °C (–4 to 158 °F)
• Ambient Temperature Range (Field Transmitter):
  • Without display: –40 to 85 °C (–40 to 185 °F)
  • With display and/or integrated overvoltage protection: –40 to +80 °C (–40 to +176 °F)
  • SIL mode: –40 to +75 °C (–40 to +167 °F)

Feed Water

• Measuring Principle: Resistance thermometer (RTD) using Pt100 sensor.
• Sensor Resistance: 100 Ω at 0 °C (32 °F).
• Temperature Coefficient: α = 0.003851 °C⁻¹.
• Sensor Types:
  • Wire Wound (WW): Suitable for temperatures up to 600 °C. Relatively large and sensitive to vibrations.
  • Thin Film (TF): Smaller size, better vibration resistance. Tolerance Class A as per IEC 60751 only up to 200 °C (392 °F).
  • iTHERM StrongSens (TF): Vibration resistance > 60 g.

Input / Measurement Ranges

• T13/T14/T15 (Low Temperature Range): –50 to 200 °C (–58 to 392 °F)
• T13/T14/T15 (High Temperature Range): –200 to 600 °C (–328 to 1,112 °F)
• T13/T14/T15 (Pt100 TF iTHERM StrongSens): –50 to +500 °C (–58 to +932 °F)

Product Water

• Transmitter Outputs:
  • Analog output 4 to 20 mA
  • HART®
  • PROFIBUS® PA
  • FOUNDATION Fieldbus™
  • Bluetooth® connectivity (optional)
• Transmitter Long-term Stability: ≤ 0.1 °C (0.18 °F) / year or ≤ 0.05 % / year.

Electrical

• Power Supply (for associated components like RN42): 24–230 V AC/DC, 0/50/60 Hz.
• Galvanic Isolation: 2 kV AC on most devices.
• Overvoltage Protection Module:
  • Maximum continuous voltage: 42 VDC
  • Nominal current: 0.5 A at 80 °C
  • Lightning surge current (10/350 µs): Iimp = 1 kA (per wire)
  • Nominal discharge current (8/20 µs): In = 5 kA (per wire) / 10 kA (total)
  • Temperature range: –40 to +80 °C (–40 to +176 °F)
  • Series resistance: 1.8 Ω per wire (±5 %)

Mechanical / Hydraulic

• Protection Class: IP66/67 (Ex-version).
• Housing Materials:
  • Aluminum with polyester powder coating
  • Stainless steel 316L
• Terminal Heads: Internal shape and size in accordance with DIN EN 50446.
• Weight (TA30H Head):
  • Aluminum: approx. 640 g (22.6 oz)
  • Stainless steel: approx. 2,400 g (84.7 oz)
• Weight (TA30H with Display):
  • Aluminum: approx. 860 g (30.33 oz)
  • Stainless steel: approx. 2,900 g (102.3 oz)
• Wire Specifications: 24 AWG, 19 strand silver plated copper with 0.025 mm PTFE.
• Lead Design: Flying leads 3" or 5½" with brass crimped sleeves.
• Grounding: Minimum cross-section of 4 mm² (13 AWG) for housing to ground connection.

Dimensions

• Dimensions are provided in inches and millimeters. Refer to the official PDF for detailed drawings and tables.
• Spring travel of the insert: ½"

Materials

• Thermowell Materials: AISI 316/1.4401, AISI 316L/1.4404/1.4435, A105/1.0460/C22.8.
• Recommended Max. Temperature for Continuous Use in Air:
  • AISI 316/1.4401, 316L/1.4404/1.4435: 650 °C (1,202 °F) (Limited use up to 800 °C)
  • A105/1.0460/C22.8: 450 °C (842 °F)

Response Time

• RTD assembly T15 (without thermowell):
  • High temperature range: 3 s
  • Low temperature range: 9 s
• RTD assemblies with thermowell (T13/T14):
  • Stepped thermowell: 20 s (high temp), 25 s (low temp)
  • Tapered thermowell: 25 s (high temp), 30 s (low temp)
  • Straight thermowell (¾"): 30 s (high temp), 35 s (low temp)

Accuracy

• RTD Thermometer as per IEC 60751:
  • Class A: ± (0.15 + 0.002 · |t|)
  • Class B: ± (0.3 + 0.005 · |t|)
  • Class AA: ± (0.1 + 0.0017 · |t|)
• Temperature Ranges for Tolerance Class Compliance:
  • Wire Wound (WW): Cl. A up to 450 °C, Cl. AA up to 250 °C.
  • Thin-Film (TF): Cl. A up to 300 °C, Cl. AA up to 150 °C.
  • Pt100 (TF) iTHERM StrongSens: Cl. A up to 300 °C, Cl. AA up to 200 °C.

Calibration

• Manufacturer provides comparison temperature calibrations from –20 to +300 °C (–4 to +573 °F) on the ITS-90.
• Calibrations are traceable to NIST standards.
• Conforms to ASTM E220.

Installation

• Minimum Immersion Length (Thermowell):
  • Stepped thermowell: 63.5 mm (2.5 in)
  • Tapered thermowell: 114.3 mm (4.5 in)
  • ¾" straight thermowell: 101.6 mm (4 in)
  • Weld-in thermowell: 114.3 mm (4.5 in)

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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