Improved Temperature Range: Now -196°C to 670°C
This economically priced standard platinum resistance thermometer, Model 935-14-77, is the metallic sheathed version of the Model 909, the workhorse of calibration laboratories all over the world. Model 77 has a range of -50ºC to 670ºC.
The resistance element is of pure platinum, coiled and mounted in a strain free construction. The former is of pure alumina material and all parts have been pre-aged to eliminate contamination and strain.
All joints are welded to minimise resistance changes. The leads are brought to a handle assembly where they are connected to a low loss cable, 2 meters long and screened.
The thermometer sheath is of metallic material which is filled with dry air during construction. It is available in a standard length of 450mm.
The model 77 is supplied with a calibration certificate giving RTPW and Wga, plus a comprehensive handbook. For transportation and storage the Model 77 is supplied in its own attractive carrying case.
Please Note:
The incanol sheath ensures that the 77 will not break. However, internally it has the same construction as a standard platinum resistance thermometer and must be handled accordingly.
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From Databook 2 
Data Sheet