Tempco
Tempco RTD00702 TempProbe 3-Wire Straight 0.25 in hvac control
A 3-wire Pt100 RTD temperature probe with 0.25 in diameter for HVAC, ovens and food applications from -18 to 200 °C
- ColorTransparent
- Pt100 RTD accuracy for precise HVAC control
- 3-wire configuration reduces lead-wire resistance error
- Straight 0.25 in probe fits tight duct spaces
- 1/2 in MNPT thread allows direct mounting
- 18 °C to 200 °C range covers heating and cooling duties
HVAC temperature probe
The Tempco RTD00702 TempProbe is a 3-wire Pt100 resistance temperature detector built for HVAC, appliance, duct, food-and-beverage, oven, packaging and pharmaceutical monitoring. Its straight 0.25 in stem and 1/2 in MNPT thread allow direct immersion in air or fluid streams where accurate sensing is required.
Build integration
The probe terminates in a terminal-block connection so it wires straight into a compatible controller or transmitter without extra cable assemblies. The 3-wire configuration compensates for lead resistance, freeing the installer from running a dedicated 4-wire return while still delivering laboratory-grade linearity across the range.
Thermals and power
Operating from -18 °C to 200 °C (0 °F to 392 °F) the platinum element draws only the tiny excitation current supplied by the host instrument, adding negligible self-heating. The transparent housing and metal sheath conduct process temperature rapidly to the sensor, keeping response fast and measurement drift low in continuous service.
Highlights
- Pt100 RTD accuracy for precise HVAC control
- 3-wire configuration reduces lead-wire resistance error
- Straight 0.25 in probe fits tight duct spaces
- 1/2 in MNPT thread allows direct mounting
- 18 °C to 200 °C range covers heating and cooling duties
Specifications
| Brand | TEMPCO |
|---|---|
| Color | Transparent |
Questions about this item
At what temperature does the Pt100 element reach its 200 °C limit?
The probe is rated for continuous operation up to 200 °C (392 °F), so sustained exposure beyond that point exceeds its specified range.
How much heat does the 0.25 in probe add to a duct running all day?
The stainless sheath and 3-wire Pt100 construction add negligible self-heating; the sensor simply tracks the process temperature without raising it.
What fitting must the duct or tank already have for the 1/2 in MNPT thread?
A matching 1/2 in FNPT port is required so the probe can thread directly into the process connection.
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