Technical Manual Page 42 CODEL
OPS.080 Issue : C Rev. : Date : 16/7/08 Doc. i/d : 0080/6 Ref. : 080040
Set the pressure on the relevant regulator to the same pressure indicated on the zero purge regulator.
The control of span verification can be carried out either from SmartCOM or via the SmartCEM for Windows
®
software (if using SmartCEM for Windows
®
software refer to the SmartCEM manual).
Before performing a span check it is good practice to carry out a zero calibration first as described in
Section 5.3.8. Zero Calibration.
When using SmartCOM software :
a) Select SCU in the ‘Sensor’ window (1).
b) Select the ‘SCU address’ (2) – usually 1.
c) Select ‘Purge control’ in the ‘Function’ (3) window and the following screen should appear.
Note that not all these functions are applicable to the GCEM4000 span check and therefore should
not be used.
d) Read back the stored parameter data from the SCU by clicking ‘Read’ (4).
e) Set the pre/post purge period to ≈5mins (5).
f) Set the gas period to 10mins or greater (6).
g) Click ‘Apply’ (7).
h) Select span gas 1 unless number 2 input is being used (8).
i) Click ‘Apply’ (9) and make sure that the comms. light turns green.
(1)
(2) (3)
(4)
(5)
(6)
(8)
(7)
Comms.
light
(9)
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