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Calibration
General Procedures
The following general hints are provided as a guide to calibration procedures. Full
calibration procedures are described in publication number K235.
Do
Use high quality Repeatable and Linear pressure sources and allow adequate
stabilization time before calibration (minimum 1 hour).
Conduct the calibration in a temperature and preferably, humidity controlled
environment. Recommended temperature is 21°C, ±2°C.
Use deadweight testers carefully and away from draughts.
Using the Calibration Menu
The calibration routines are selected from the SETUP menu as detailed on page 36.
Enter the calibration PIN number, initially set to 4321, press
Calibration Menu will be displayed as follows. It is recommended that the PIN
number be changed as soon as possible.
Select the item to calibrate from the menu as shown above and follow the
calibration procedure outlined on the display. The following test equipment will be
required.
Pressure Measurement Channels (Internal and External)
•
Deadweight Tester.
Voltage Ranges (5V and 30V)
•
Voltage source.
Current Inputs and Outputs
•
Digital Milliammeter.
41
and the
K249 Issue No. 4
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