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
- Product 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.
How it compares
Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.
- Price $104.99
- Pricier than about 70% of the 1,762 comparable items (median $45.99).
Specifications
| Product | |
|---|---|
| Brand name | TEMPCO |
| Product 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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