Isotech 935-14-61, 935-14-13, 935-14-16, 935-14-72, 935-14-98 Data sheet

Reference Probes - Semi Standards

-196 to 670°C Platinum Resistance Thermometers

High Stability Reference Probes

Wide Temperature Ranges

High Stability Platinum Coil Elements

These industrial platinum resistance thermometers are ideal for field and lab use. Suitable for use as working standards in Dry Blocks and Liquid Baths or as high accuracy probes for our range of True Temperature Indicators.

All the thermometers are metal sheathed and both less fragile and more affordable than the Isotech range of true Standard Platinum Resistance Thermometers that are used in laboratories and are found in our publication

“Solutions for Primary and Secondary Laboratories”.

All the thermometers use handmade coil wound platinum sensing elements to give high accuracy and low drift. Isotech’s UKAS accredited lab can calibrate to the smallest of uncertainties.

Calibration should be specified to suit the particular operating range and application. Isotech can advise on which service is appropriate to match the temperature range and application.

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Universal Specifications
Ro	100Ω ± 0.05 Ω
Alpha	0.003850 ± 0.000005
Standard	IEC 60751
Stability	0.010 Ω/year
Recommended Current	1mA
Self Heating at 1mA	0.004°C
Calibration	Optional UKAS Calibration at extra cost.
	See table for typical uncertainties
Connection	Four Wire

After manufacture all Isotech Semi Standard PRTs are thermally pre-conditioned to provide optimal stability.

64 | CALIBRATION SOLUTIONS