• 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 How to Order
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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

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information about California Propsition 65, go to www.P65Warnings.ca.gov or visit our California Proposition 65 page.

Literature Drawer: 

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

Backup Method - Rich Text: 

Models

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.

 

Model NumberModel and DescriptionNotes
Thermocouple Assemblies (thermowell included)
TCJ-225J Type underground thermocouple, 1/2 NPT2-1/2 in. (63 mm) insertion length
TCK-225K Type underground thermocouple, 1/2 NPT
TCJ-325J Type underground thermocouple, 3/4 NPT
TCK-325K Type underground thermocouple, 3/4 NPT
TCJ-245J Type underground thermocouple, 1/2 NPT4-1/2 in. (114 mm) insertion length
TCK-245K Type underground thermocouple, 1/2 NPT
TCJ-345J Type underground thermocouple, 3/4 NPT
TCK-345K Type underground thermocouple, 3/4 NPT
TCJ-275J Type underground thermocouple, 1/2 NPT7-1/2 in. (191 mm) insertion length
TCK-275K Type underground thermocouple, 1/2 NPT
TCJ-375J Type underground thermocouple, 3/4 NPT
TCK-375K Type underground thermocouple, 3/4 NPT
RTD Assemblies (thermowell included)
RTD-225-400-100100 ohm Pt  RTD 400°F (204°C) max., 1/2 NPT2-1/2 in. (63 mm) insertion length
RTD-325-400-100100 ohm Pt  RTD 400°F (204°C) max., 3/4 NPT
RTD-245-400-100100 ohm Pt  RTD 400°F (204°C) max., 1/2 NPT4-1/2 in. (114 mm) insertion length
RTD-345-400-100100 ohm Pt  RTD 400°F (204°C) max., 3/4 NPT
RTD-275-400-100100 ohm Pt  RTD 400°F (204°C) max., 1/2 NPT7-1/2 in. (191 mm) insertion length
RTD-375-400-100100 ohm Pt  RTD 400°F (204°C) max., 3/4 NPT
RTD Transmitter Assemblies (thermowell included)
RTDT-225-400-100100 ohm Pt 4-20 mA RTD Transmitter, 1/2 NPT, 0-400°F (-17.8-204°C)2-1/2 in. (63 mm) insertion length
RTDT-225-140-100100 ohm Pt 4-20 mA RTD Transmitter, 1/2 NPT, -60-140°F (-51.1-60°C)
RTDT-325-400-100100 ohm Pt 4-20 mA RTD Transmitter, 3/4 NPT, 0-400°F (-17.8-204°C)
RTDT-325-140-100100 ohm Pt 4-20 mA RTD Transmitter, 3/4 NPT, -60-140°F (-51.1-60°C)
RTDT-245-400-100100 ohm Pt 4-20 mA RTD Transmitter, 1/2 NPT, 0-400°F (-17.8-204°C)4-1/2 in. (114 mm) insertion length
RTDT-245-140-100100 ohm Pt 4-20 mA RTD Transmitter, 1/2 NPT, -60-140°F (-51.1-60°C)
RTDT-345-400-100100 ohm Pt 4-20 mA RTD Transmitter, 3/4 NPT, 0-400°F (-17.8-204°C)
RTDT-345-140-100100 ohm Pt 4-20 mA RTD Transmitter, 3/4 NPT, -60-140°F (-51.1-60°C)
RTDT-275-400-100100 ohm Pt 4-20 mA RTD Transmitter, 1/2 NPT, 0-400°F (-17.8-204°C)7-1/2 in. (191 mm) insertion length
RTDT-275-140-100100 ohm Pt 4-20 mA RTD Transmitter, 1/2 NPT, -60-140°F (-51.1-60°C)
RTDT-375-400-100100 ohm Pt 4-20 mA RTD Transmitter, 3/4 NPT, 0-400°F (-17.8-204°C)
RTDT-375-140-100100 ohm Pt 4-20 mA RTD Transmitter, 3/4 NPT, -60-140°F (-51.1-60°C)
Replacement Parts (order separately)
TCHACast aluminum head with terminal blocks for thermocouples 
TCJE-25Type J elements only for 2-1/2 in wells*all elements are spring loaded
TCKE-25Type K elements only for 2-1/2 in wells*
TCJE-45Type J elements only for 4-1/2 in wells*
TCKE-45Type K elements only for 4-1/2 in wells*
TCJE-75Type J elements only for 7-1/2 in wells*
TCKE-75Type K elements only for 7-1/2 in wells*
PTW-2251/2 NTP x 2-1/2 in. thermowell 
PTW-3253/4 NTP x 2-1/2 in. thermowell 
PTW-2451/2 NTP x 4-1/2 in. thermowell 
PTW-3453/4 NTP x 4-1/2 in. thermowell 
PTW-2751/2 NTP x 7-1/2 in. thermowell 
PTW-3753/4 NTP x 7-1/2 in. thermowell 
RTDE-25100 ohm Pt RTD element only for 2-1/2 in. wellsall elements are spring loaded
RTDE-45100 ohm Pt RTD element only for 4-1/2 in. wells
RTDE-75100 ohm Pt RTD element only for 7-1/2 in. wells
RTDTX-400-100100 ohm Pt RTD Transmitter only 0-400°F (-17.8-204°C)
RTDTX-140-100100 ohm Pt RTD Transmitter only -60-140°F (-51.1-60°C)
Thermocouple Extension Wire
00003271Type J 100 ft. roll 
00003272Type K 100 ft. roll