RTD Probes

The Techne Model WSP425 and SSP670 PRT’s are an excellent choice for use as a reference sen-sor in all types of systems including dry block calibrators, liquid calibration baths, ovens, reactors and other applications where temperature needs to be accurately measured.

Our PRT’s offer proven and reliable performance for critical temperature measurements. They can be used with our Tecal Accu-Temp indicator or any comparable unit. Both models include a carrying case and ITS-90 calibration (NIST traceable) certificate with coefficients and resistance vs. temperature table. The SSP670 has excellent performance, specifications and wide temperature range at an affordable price, while the WSP425 is designed for measurements within a narrower temperature range.

The model WSP425 has a NIST calibrated operating range of -50 to +350ºC with an accuracy of ±0.07ºC, while the model SSP660 has a NIST calibrated operating range of -200 to +660ºC with an accuracy of ±0.05 up to 420ºC

660ºC Secondary Standard PRT

Model SSP670 PRTs are assembled using our special wire wound RTD elements and assembled into inconel sheaths. The SSP670 PRT has similar accuracy and long-term stability specifications you would find in much higher priced secondary standard PRTs.

The SSP670 PRT can be used as a working standard in calibration baths, furnaces, fluidized baths, dry block calibrators and other any other temperature calibration work requiring a high level of accuracy and repeatability.