StarTalk™ DTM Help for StarPac 3 System
© Flowserve Corporation
Version 1.0.0 – Printed November 1, 2013
Cryogenic Usage
Because of how the type-K thermocouple reacts at cryogenic temperatures, we recommend calibrating the
system at the working temperature. Use the actual ADC values read from register 30009 and the corresponding
temperatures in the above equations to accomplish the calibration. The StarPac 3 will indicate correctly at the
narrow operating temperature range but will not be correct at ambient temperatures due do the response curve of
the thermocouple. This is normal operation for cryogenic applications. Please contact Flowserve Springville APD
Engineering if you need more help with your application.
An Excel program is available from Flowserve Springville APD Engineering, which will calculate the amount of
error you can expect.
The formula for converting to °C from °F is:
°
C
= (°
F
-
32
)
/ 1.8
And from °F to °C is
°
F
=
1.8
°
C + 32