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H25-IR Calibration
Instruction 3015-4342 21
3 Calibration
When the instrument is supplied with an internal leak source, the operator can choose between two types
of calibration: Internal or External. Internal calibration uses the instrument’s built-in leak source, while
External calibration uses a customer supplied calibrated leak source.
If the instrument is supplied without a leak source, then the option of selecting the calibration type is
removed from the menu system. The only option for this model of instrument is to calibrate using an
external leak source.
3.1 Selecting Internal or External Calibration
Use the Main Menu > CAL DATA > CAL TYPE function to select either Internal or External calibration. If
External calibration is selected, then also use the EXT RATE and EXT GAS TYPE functions to enter the
characteristics of the external leak source.
Display the Calibration Data menu by first pressing both the ENT and ESC buttons on either the
instrument’s front panel or Smart probe at the same time to display the Main menu. Next, use the Up and
Down buttons to highlight “CAL DATA”, and then press ENT to display the Calibration Data menu.
Main Menu:
SYSTEM
LOG
SETUPS
CAL DATA
DIAGNOSTICS
3.1.1 Internal Calibration Selection
From the Calibration Data menu, use the Up and Down buttons to highlight “CAL TYPE”, and then
press ENT to display its setup screen. Use the Up and Down buttons to highlight “INTERNAL”,
and press ENT to make the selection and return to the Calibration Data menu. Press ESC as required to
return to the Data Display screen.
Calibration Data Menu:
CAL TYPE
EXT RATE
EXT GAS TYPE
CAL FACTOR
RESTORE FACTORY CAL
CAL TYPE INTERNAL
EXTERNAL