The correction formula:
Rs
=
Rm
Ts
+
Tk
Tm
+
Tk
Rs
Resistance corrected
Rm
Measured resistance
Ts
Desired reference temperature
Tm
The temperature at which resistance was/is measured
Tk
234.5 for copper
225.0 for aluminum
(aluminum may be as high as 240)
Alternative: Correction with “alpha25” to calculate Tk with the formula:
Tk
=
1
alpha25
−
25
When Temperature correction is activated the Main Test screen appears as below:
The “T” in the measuring channel box shows
that the displayed resistance value is corrected.
In this example it is corrected to 25 °C using Tk
of Copper and referring to Temperature probe 1.
Instruction Manual Winding Resistance Meter
Type WR100 / WR50 / WR14
Page 65 of 139
Содержание WR14-R
Страница 1: ...Raytech GmbH Oberebenestrasse 11 CH 5620 Bremgarten Switzerland INSTRUCTION MANUAL ENGLISH...
Страница 26: ...5 1 2 Rear Panel WR100R Instruction Manual Winding Resistance Meter Type WR100 WR50 WR14 Page 26 of 139...
Страница 32: ...5 2 2 Rear Panel WR50R Instruction Manual Winding Resistance Meter Type WR100 WR50 WR14 Page 32 of 139...
Страница 36: ...5 3 2 Rear Panel WR14R Instruction Manual Winding Resistance Meter Type WR100 WR50 WR14 Page 36 of 139...
Страница 107: ...Raytech GmbH Oberebenestrasse 11 CH 5620 Bremgarten Switzerland Appendix...