Miniature RTD Sensors — Needle Probe · Small OD · Precision RTDs
Miniature RTD sensors for tight spaces, precision instrumentation, and small-OD probe requirements.
Product Overview
Miniature RTD Sensors — Needle Probe · Small OD · Precision RTDs
Compact platinum 100 ohm (Pt100) and platinum 1000 ohm (Pt1000) RTD assemblies for tight-space instrumentation, validation work, and high-accuracy measurement where thermocouple drift is not acceptable.
Miniature RTD Package Fit
Miniature RTDs use compact probe geometry for narrow passages, small fixtures, and low-mass test setups where accuracy still matters.
Compact RTD Probe Assembly
Small-OD RTD build for instrumentation packages, test fixtures, chamber mapping, and other installations where a larger sheath would be mechanically intrusive.
Miniature RTD Configurations
Small-OD Thin-Film RTD Probe
Thin-film platinum 100 ohm (Pt100) or platinum 1000 ohm (Pt1000) element in a stainless probe 3.2 mm (1/8") diameter or smaller for compact, fast-response measurement. Common in environmental chambers, medical device testing, electronics fixtures, and clean instrumentation packages.
Wire-Wound Precision Miniature RTD
Wire-wound element construction where long-term stability and tighter tolerance matter more than minimum cost. Used for validation programs, calibration fixtures, and laboratory or metrology-adjacent measurement points that still require a physically small package.
Needle-Tip RTD Probe
Needle-style RTD construction for insertion into narrow passages, small bores, thin materials, or compact tooling. Typically specified when the application needs better repeatability than a thermocouple but still requires a very small sensing geometry.
Selection Guidance
Wire Count
3-Wire Miniature RTD
The common industrial choice where space is tight but the signal still lands on a PLC, DCS, or transmitter input expecting lead-resistance compensation.
4-Wire Miniature RTD
Preferred for laboratory, semiconductor, validation, and long-lead installations where maximum accuracy matters more than wiring simplicity.
Where These Are Used
Semiconductor & Electronics
Fixture, chamber, wafer-adjacent, and process-tool measurement where small form factor and accuracy both matter.
Medical, Lab, and Validation
Compact probes for qualification rigs, device testing, environmental chambers, and precision thermal studies.
What to Share for Review
Need this product configured to your application?
Share the geometry, wire count, accuracy target, and documentation requirements. We can help scope the right miniature RTD build.