• Murphy

TC, RTD and RTDT Series

Enovation Controls offers a variety of highly reliable thermocouple and RTD (Resistance Temperature Detector) assemblies and 4-20 mA DC output RTD transmitters.

Their innovative features include a 304 stainless steel thermowell that provides protection to the spring-loaded element. The cast aluminum connecting head meets NEMA 4 requirements and includes an RTD transmitter or a thermocouple/ RTD terminal block mounted on ceramic Steatite and rated NEC Class 2. The complete assemblies are offered in 2-1/2, 4-1/2 or 7-1/2 in. (63, 114 or 191 mm) thermowell insertion lengths.

Specifications Downloads Models
Specifications Drawer: 
  • Thermowell: 304 SS; 7000 psi (48.2 MPa) [482 bar] max. @ 70°F
  • Connecting Head: Cast Aluminum; 400°F (204°C) max. operating temp
  • Thermocouple: Ungrounded, Magnesium Oxide (MgO) insulated 96% purity; element sheath of 304 SS (stainless steel)
    • Type J operating temp.: 900°F (482°C) max
    • Type K operating temp.: 1800°F (982°C) max
  • RTD: 100 ohm @ 0°C Platinum element; 3-wire; 400 °F maximum; 0.00385 temperature coefficient; 316L stainless steel element sheath
  • RTD Transmitter: 100 ohms Platinum RTD; 400°F maximum; Ranges: 0° to 400°F and -60° to 140°F. Linearized 4-20 mA DC output. Loop powered typically 24 VDC, when using the Loop Resistance Graph, 13-40 VDC. For use with 100 ohms Platinum RTD elements, 0.00385 temp. coefficient
  • Thermocouple Accuracy (J/K): 0.5%
  • RTD Accuracy: ±0.12%
  • RTD Transmitter Accuracy: ±0.1%
  • Terminal block: Ceramic Steatite; thermocouples have: 4 terminals; RTDs: 6 terminals. 28 to 14 AWG wire size, (8-32 SS screws)
  • Shipping Weights (listed by insertion length): 
    • 2-1/2 in. (63 mm) model: 2 lb. (0.907 kg) 
    • 4-1/2 in. (114 mm) model: 2 lb. 8oz. (1.24 kg)
    • 7-1/2 in. (191 mm) model: 3 lb. 6oz. (1.67 kg)
  • Shipping Dimensions (listed by insertion length):
    • 2-1/2 and 4-1/2 in (63 and 114 mm) models: 12 x 7 x 5-1/2 in. (305 x 178 x 140 mm)
    • 7-1/2 in. (191 mm) models: 16 x 11 x 5-1/2 in. (406 x 280 x 144 mm)
  • Optional Thermocouple Extension Wire: (Sold separately) 
  • Individual Conductor Insulation: Extruded PFA 
  • Duplex Conductor Insulation: Twisted; Extruded PFA Overall
  • Temperature Rating: Continuous -450° to 500°F (-267° to 260°C)
  • Abrasion Resistance: Good
  • Moisture Resistance: Excellent
  • Shielding: Metallic Shield
  • Gage: 20 AWG (0.5 mm2)
    • Ohms per Double Foot Type J: 0.357
    • Ohms per Double Foot Type K: 0.586
Literature Drawer: 

Additional product documentation can be found on our product support website or by clicking the Help Center button above.

Thermocouple Assemblies with Thermowell
Available in types J or K, the thermocouple assemblies have ungrounded elements in a 304 stainless steel spring-loaded sheath. For product compatibility see next page (replacement parts and thermocouple extension wire are available).

RTD Assemblies with Thermowell
Resistance temperature detector (RTD) assemblies are available with a 100 ohm platinum element, 3-wire leads and spring-loaded 316L stainless steel element sheath.

RTD Transmitter Assemblies with Thermowell
RTDT assemblies transmit process variable temperatures. Available as part of the temperature sensor assemblies or as a separate units, the RTDTs accept 2- or 3-wire, 100 ohm RTDs. The RTD transmitters are loop powered. They feature linearized 4-20 mA DC outputs and have reversed polarity protection.