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Straight RTD probe with 3-wire Pt100 sensor .25 in diameter transparent finish

Tempco

Tempco RTD00703 3-Wire Straight .25 in hvac control

SKU CH-XWNT-A8BTZ

A 3-wire Pt100 RTD probe with a straight 0.25 in stem and 1/2 in MNPT thread for HVAC and industrial temperature sensing from -18 to 200 °C

  • Product colorTransparent
  • 3-wire Pt100 RTD delivers precise temperature sensing
  • Straight 0.25 in probe fits tight duct and appliance spaces
  • 1/2 in MNPT thread enables secure mounting in HVAC systems
  • Operates from -18 °C to 200 °C for broad industrial use
  • Transparent housing allows quick visual inspection of connections

Tempco RTD00703 3-Wire Probe

This Tempco RTD00703 is a Pt100 temperature probe with a 3-wire configuration and a straight 0.25 in stem. It suits technicians and engineers who need reliable temperature sensing in HVAC, food processing, pharmaceutical or packaging environments. The probe operates from -18 °C to 200 °C and fits a 1/2 in MNPT process connection.

Check stem length and wiring before ordering

Verify that the 0.25 in straight stem reaches the measurement point in your duct, oven or vessel. Confirm your controller or transmitter accepts a 3-wire Pt100 input, as 2-wire or 4-wire devices are not compatible. Ensure the 1/2 in MNPT thread matches the existing fitting or that an appropriate adapter is available.

Fits 1/2 in MNPT ports and frees terminal wiring

The probe installs directly into a 1/2 in MNPT port without additional cable glands, since the cable material and length are not applicable and the connection is made at the terminal block. This arrangement frees up space around the process connection and simplifies wiring for PLC or DCS inputs. The transparent body allows visual inspection of the sensor element.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $98.99
Pricier than about 68% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameTEMPCO
Product colorTransparent

Questions about this item

Does the RTD00703 include a cable or terminal block, or must I supply them?

The probe connects via a terminal block; no cable is included.

When should I choose the 3-wire Pt100 version over a 2-wire alternative?

The 3-wire Pt100 compensates for lead resistance, giving tighter accuracy on long runs.

What does the 392 °F upper limit mean when the probe sits in an oven or duct?

It is the maximum continuous temperature the Pt100 element can withstand without drift.

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