Page 984 - techequipmentscatalogue2016
P. 984
UKE ®
Switch sets - closed Set-point
Switch resets - open Reset
Time
To perform the test: • Set the scan rate to a
low value, i.e. 1.0 °C per
Isolate the switch from the process. minute, for better accuracy.
1 • If the scan rate is too low,
the duration of the test may
Fully immerse the switch into a precision temperature source such as a be longer than necessary.
2 dry-well or bath capable of covering the required temperature range. Additional resources
~3 Connect the leads of the switch to a dinital multimeter or to the switch For more in depth information
:;I' about this application check out
test inputs of the dry-well. these videos and application notes
from Fluke.
If using a Metrology Well or Field Metrology Well, increase the
914X Field Metrology Wells
4 temperature to the set point. Continue raising the temperature Video Series
until the switch changes state and record that temperature. Best practices in
temperature calibration
~ Decrease the temperature until the switch resets (changes state again) Testing Temperature
Switches Using
5 and record the temperature. Metrology Wells
~6 Repeat the process as many times as needed, but reduce the ramp rate
and target the last measured set point and reset points to verify accuracy
and repeatability.
~7 Record the deadband (difference between the set point and the
reset point).
978 www.tech-equipments.comlsales@tech-equipments.com
Switch sets - closed Set-point
Switch resets - open Reset
Time
To perform the test: • Set the scan rate to a
low value, i.e. 1.0 °C per
Isolate the switch from the process. minute, for better accuracy.
1 • If the scan rate is too low,
the duration of the test may
Fully immerse the switch into a precision temperature source such as a be longer than necessary.
2 dry-well or bath capable of covering the required temperature range. Additional resources
~3 Connect the leads of the switch to a dinital multimeter or to the switch For more in depth information
:;I' about this application check out
test inputs of the dry-well. these videos and application notes
from Fluke.
If using a Metrology Well or Field Metrology Well, increase the
914X Field Metrology Wells
4 temperature to the set point. Continue raising the temperature Video Series
until the switch changes state and record that temperature. Best practices in
temperature calibration
~ Decrease the temperature until the switch resets (changes state again) Testing Temperature
Switches Using
5 and record the temperature. Metrology Wells
~6 Repeat the process as many times as needed, but reduce the ramp rate
and target the last measured set point and reset points to verify accuracy
and repeatability.
~7 Record the deadband (difference between the set point and the
reset point).
978 www.tech-equipments.comlsales@tech-equipments.com
