3.4.10 Calibration Menu
Figure 39 – Calibration Menu Screen
Main Menu → Calibration Menu
Calibrating the instrument should be done with care (refer to Section 5 before using these menus).
Depending on the selection in this field, a number of extra menu
items will be displayed. These are separately documented in
Manual Mode (refer to Section 3.4.10.1) and Timed Mode (refer
to Section 3.4.10.2).
Select the Cal. Type field and select either Timed or Manual.
Timed mode is an automatic calibration controlled by the:
▪ Interval between cycles
▪ Length of each calibration cycle
▪ Time when the calibration will begin
▪ Check only or automatic compensation
Timed calibration with span compensation enabled does not fulfil
U.S. EPA approval.
Manual mode allows the user to choose the type of calibration
they wish to perform and will open the appropriate valves in
preparation for the user to perform a manual calibration. The
setup used will depend on the Cal. Mode selected. Manual mode
is set as default.
Select whether the instrument will sample from the external
calibration port or from the optional internal span/zero source
(IZS) when zero gas is requested.
Select whether the instrument will sample from the external
calibration port or from the optional internal span/zero source
(IZS) when span gas is requested.
The duration of each Cal. Mode (span and zero) when performing
Cycle Mode (refer to Section 3.4.10.1) or Cal. Type is set to Timed.
(refer to Section 3.4.10.2)