Model 935-14-77 Standard Platinum Resistance Thermometer. Temperature range -50°C to 670°C.
Model 935-14-77 SPRT, is the metallic sheathed version of the Model 909, the workhorse of calibration
laboratories all over the world.
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
Standard PRT Thermometer.
|935-14-77||SPRT Thermometer Range -200 to +670°C|
they are connected to a low loss cable, 6 feet 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.
For transportation and storage the SPRT is supplied in its own attractive carrying case.
Please Note: The incanol sheath ensures that the 935-14-77 will not break.
However, internally it has the same construction as a standard platinum resistance thermometer
and must be handled accordingly.
|Measuring Range||-50°C to 670°C|
|Nominal Resistance||25.5Ω at 0°C|
|Resistance Ratio||Wga ≥ 1.11807 as required by ITS-90|
|Sealed-In Gas||Dry air|
|Stability||Depends upon the temperature range of
Typical annual stability, see table above
|Internal Leads||4 wire-platinum|
|External Leads||Silver-plated multistrand wires in a
low-loss insulation cable terminating
in gold-plated terminals.