Bacharach 2810, Руководство по эксплуатации и техническому обслуживанию

Страница: 16 / 28

CO
2
Analyzer 2810/2815/2820
Instruction 19-9222 12
3.7.1.2 Gas Calibration
WARNING:
This procedure assumes that you are using the
Bacharach Calibration Kit as listed in Section 4.1, Calibration
Accessories. When using a non Bacharach gas regulator,
however, you must also use an in-line flowmeter to ensure that
the gas flow to the analyzer is between 100 and 200 cc/minute.
Improper flow can cause erroneous gas readings!
Important!
Always perform an Air Calibration first.
1. Press and hold down the f
2
button untl the ‘User Cal’ screen s ds-
played.
User Cal
Wat untl the analyzer automatcally swtches to ts ‘Ar/Gas’ screen
before proceedng.
f1-> Air
f3-> Gas
2. Press the f
3
button to dsplay the Gas Calbraton screen.
f1> 2500
340
The top lne shows the preset calbraton gas value that must be ap-
pled to the analyzer’s nlet. The bottom lne shows the current CO
2
readng.
Note:
The analyzer is most accurate around the calibration
gas value. If the analyzer, however, is routinely used to moni-
tor CO
2
levels that are much higher or lower than the preset
value, then it is recommended that the analyzer be calibrated
on a concentration of gas that is close to the gas level being
monitored. This operation requires that the preset calibration
gas value be reset higher or lower using the optional BACH-
COM software, version 2.22 or higher.