BÜCHI Labortechnik AG
Cleaning and servicing | 7
Operation Manual Interface I-300 Pro
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7.8.2
Simple calibration
This calibration method is used to adjust the linearity of the pressure sensor at spe-
cific predefined pressure levels. During the calibration sequence the pressure sensor
is calibrated at room temperature in six stages at normal atmospheric pressure and at
800, 600, 400, 200 and 10 mbar.
During the calibration sequence, the system carries out a plausibility check on the
measured readings and indicates a fault if the confirmed readings are implausible.
Navigation path
➜
Configuration
➜
Servicing
➜
Pressure calibration
u
Connect the reference pressure gauge to the same vacuum system that the pump
and interface unit are connected to.
u
Navigate to the "Service" screen and select the menu item "Pressure calibration",
see Chapter 6.1 "Navigating the menu", page 44.
Fig. 70: Menu item "Pressure calibration"
u
In the first stage, enter the pressure indicated by the reference pressure gauge.
u
In the second stage, use the function buttons
and
to increase/de-
crease the vacuum in the system until the pressure shown on the reference gauge
is within ±10 mbar of the specified setting.
u
Enter the pressure indicated by the reference pressure gauge.
u
Repeat the process for all subsequent stages.
u
To skip a stage, press the function button SKIP.
ð
After the last stage, the calibration settings are saved.
u
To return to the menu, press the function button ESC or OK.
