Calibration
H25-IR
22
Instruction 3015-5286
3.1.2 External Calibration Selection and Setup
When using an external leak source, the instrument must be setup for external calibration along with entering
the leak rate and gas type of the external leak source.
Select external calibration and enter the parameters of the external leak source as follows:
Select External Calibration:
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
“EXTERNAL”,
and press
ENT
to make the selection and return to the Calibration Data menu.
Enter External Leak Rate:
From the Calibration Data menu, highlight “EXT RATE” and press
ENT
to display its
setup screen. Use the
Left
and
Right
buttons to move the blinking cursor across the screen to highlight the
digit to be modified, and then use the
Up
and
Down
buttons to modify that digit. Press
ENT
to save the new
external leak rate value and return to the Calibration Data menu.
IMPORTANT!
Be sure to enter the leak rate using the same units of measure as displayed on the EXT RATE
screen. In this example, the units of measure are g/yr. If your leak source is marked in Oz/yr, then multiply that
value by a factor of 28.35. For example: If the leak source is marked 0.9 Oz/yr, then enter a leak rate of (0.9 x
28.35=) 25.5 g/yr.
NOTE: The minimum calibration leak rate is 2 g/yr.
Enter External Gas Type:
From the Calibration Data menu, highlight “EXT GAS TYPE” and press
ENT
to
display its setup screen. Use the
Up
and
Down
buttons to highlight the type of gas contained in the external
leak source. Press
ENT
to save the new external gas type and return to the Calibration Data menu.
NOTE:
The gases displayed depend on which optical bench is installed. Refer to Section 6 Troubleshooting.
Press
ESC
as required to return to the Data Display screen.
CAL TYPE
INTERNAL
EXTERNAL
EXT GAS TYPE <
R134A
R401A
R402A
<
R402B
EXT RATE 2
5
.5 g/yr
Summary of Contents for H25-IR
Page 6: ...Contents H25 IR iv Instruction 3015 5286 Notes ...
Page 26: ...Preparing for Operation H25 IR 20 Instruction 3015 5286 Notes ...
Page 34: ...Calibration H25 IR 28 Instruction 3015 5286 Notes ...
Page 43: ...H25 IR Operation Instruction 3015 5286 37 Notes ...
Page 68: ...Specifications H25 IR 62 Instruction 3015 5286 Notes ...
