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About Resistance Thermal Devices (RTD)

Resistance temperature detectors measure temperature by detecting changes in electrical resistance. Available in a variety of probe lengths, connection types, and output configurations, RTDs provide accurate, stable temperature measurement for industrial processes, equipment, and sanitary applications. Choose an RTD based on your temperature range, installation requirements, and instrumentation compatibility.

  • Sensing Element: Pt100 or Pt1000

  • Wiring Configuration: 2-wire, 3-wire, or 4-wire

  • Electrical Output: Direct RTD or 4–20 mA transmitter

  • Probe Connection: Threaded, sanitary, or other process connections

  • Probe Length: Select based on installation and immersion depth

  • Connection Head: Stainless steel, aluminum, or polymer, depending on model

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Tel-Tru 6" Probe, 0.25" Dia. 1/2" NPT with 6" cable, loose wires

Probe Length

6"

Probe Diameter

0.25"

Head Connection

Cable/Loose Wires

Electrical Connection

6" cable, loose wires

152.08 $

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Tel-Tru 4" Probe, 0.25" Dia. M12 with mating connector + 10 ft cable

Probe Length

4"

Probe Diameter

0.25"

Head Connection

M12 Connection

Electrical Connection

M12 Mating connector + 10 ft cable

193.28 $

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Tel-Tru 12" Probe, 0.25" Dia. 316 SS head, 3-wire RTD transmitter, 4–20 mA

Probe Length

12"

Probe Diameter

0.25"

Head Connection

316 SS

Electrical Connection

RTD transmitter, 4–20 mA

344.40 $

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Tel-Tru 12" Probe, 0.25" Dia. Polypropylene head, no terminal block

Probe Length

12"

Probe Diameter

0.25"

Head Connection

Polypropylene

Electrical Connection

Loose Wire

172.20 $

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Tel-Tru 4" Probe, 0.25" Dia. 316 SS head, 3-wire RTD transmitter, 4–20 mA

Probe Length

4"

Probe Diameter

0.25"

Head Connection

316 SS

Electrical Connection

RTD transmitter, 4–20 mA

337.40 $

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Tel-Tru 6" Probe, 0.25" Dia. Polypropylene head, ceramic terminal block

Probe Length

6"

Probe Diameter

0.25"

Head Connection

Polypropylene

Electrical Connection

Ceramic Terminal Block

174.23 $

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Tel-Tru 2.5" Probe, 0.25" Dia. 1/2" NPT with 6" cable, loose wires

Probe Length

2.5"

Probe Diameter

0.25"

Head Connection

Cable/Loose Wires

Electrical Connection

6" cable, loose wires

150.50 $

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Tel-Tru 9" Probe, 0.25" Dia. 316 SS head, 3-wire RTD transmitter, 4–20 mA

Probe Length

9"

Probe Diameter

0.25"

Head Connection

316 SS

Electrical Connection

RTD transmitter, 4–20 mA

341.60 $

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Tel-Tru 9" Probe, 0.25" Dia. Cast aluminum head, RTD transmitter, 4–20 mA

Probe Length

9"

Probe Diameter

0.25"

Head Connection

Cast Aluminum Head

Electrical Connection

RTD transmitter, 4–20 mA

312.20 $

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Tel-Tru 2.5" Probe, 0.25" Dia. Cast aluminum head, ceramic terminal block

Probe Length

2.5"

Probe Diameter

0.25"

Head Connection

Cast Aluminum Head

Electrical Connection

Ceramic Terminal Block

181.02 $

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