Techne Secondary Standard Probe's 
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     Our PRT's offers proven and reliable performance for your critical temperature measurements. They can be used with our Tecal Accu-Temp indicator or any comparable unit. All models include a carrying case and ITS-90 calibration (NIST traceable) certificate with coefficients and resistance vs. temperature table. Our working standard probes are a good choice for use in verifying, calibrating and monitoring the temperature of  calibration baths, furnaces, fluidized baths, dry block calibrators, incubators, freezers, water baths, thermal validation systems, comparison calibrations of other sensors or for any other temperature application where a high level of accuracy and reliability are required.  All probes shown are fully annealed to remove any instability for longer term accuracy and performance throughout the operating range.
 

Choose one for your application

Probe size (see sketch) Calibrated
Temperature range
Catalog #

Description

1/4" OD (A) x 12"L (B) w/ 72"(C) 4 wire lead -50 to 425°C 7002617 WSP425 Probe w/ carrying case. Includes ITS90 calibration with
a8, b8, a4, b4, Rtpw coefficients and R vs T table

 

Technical details for each model

Catalog # 7002617
Temperature coefficient
 
Ω /Ω /° C minimum
0.003924
Stability

Meets IEC stability specifications after 250 hours exposure to extremes of temperature range. Typical drift is less than 0.025°C at 0°C.

Repeatability Meets IEC requirements. Typical shift less than 0.025°C at 0°C after ten cycles over range.
Time constant (in water flowing at 3ft/second) 6 seconds
Self heating (mV/° C in water flowing at 3ft/second) 35mW
Calibrated Measurement uncertainty K=2 -50°C ±0.030°C
-20°C ±0.025°C
0°C ±0.025°C
100°C ±0.030°C
425°C ±0.050°C
ORDERING INFORMATION: Catalog number: 7002617 
List Price: $465
Web Price: $441.75

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