Thermometrics surface mount RTD sensors deliver Pt100 accuracy for surface temperature measurement without process penetration. Weld-pad, magnetic, and ring/lug configurations mirror the TC-24/31/32 thermocouple series but provide the higher accuracy and better long-term stability of resistance temperature detectors for applications below 600°C.
A Pt100 element embedded in a flat metal weld pad for TIG welding to any metal surface. Provides a permanent, low-thermal-mass temperature measurement point with accuracy superior to an equivalent thermocouple installation. 316SS or Inconel 600 pad, MIMS extension cable with PTFE leads.
A spring-loaded Pt100 probe with integral permanent magnet for temporary or portable surface temperature measurement on ferromagnetic surfaces. Accurate, repeatable, and tool-free deployment for maintenance and commissioning applications. 3-wire, Class B, with 4-pin M12 connector.
A Pt100 element in a ring or lug-style mounting base for bolted or clamped attachment to pipe flanges, tube clamps, and structural surfaces. Available with standard ring bore sizes matching common pipe and conduit diameters. PTFE or MIMS lead wire.
| Parameter | RTD-32 Weld-Pad | RTD-31 Magnetic | RTD-24 Ring/Lug |
|---|---|---|---|
| Element | Pt100 Class A, 3-wire | Pt100 Class B, 3-wire | Pt100 Class A or B, 2/3-wire |
| Base Material | 316SS or Inconel 600 | Nickel-plated steel magnet | 316SS |
| Max Surface Temp | 500°C (316SS pad) | 200°C | 400°C |
| Lead/Cable | MIMS 1/16" OD, PTFE leads | PVC cable, M12 connector | PTFE leads or MIMS |
| Mounting | TIG weld | Magnetic — no fastener | Bolt or band clamp |
| Response Time | 0.5–2 sec | 3–8 sec | 2–5 sec |
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