1.3 Earphone
For use in a loud environment the optional earphone can be connected to jack (9).
1.4 Storage
Short term: Switch in position
“OFF”
.
More than 1 month: Remove sensor and battery pack.
2. Calibration
Move switch in position
“TEST”.
Press the button marked
“Cal”
, using the supplied pushpin.
The display will show
“000”
flashing until the zero has been adjusted. This procedure must be done in a clean atmosphere.
Now the display will alternate between “
GCAL”
and “
ICAL”
. To start a current calibration push
the cal button while “ICAL” is active, to start a gas calibration push it when “GCAL” is active.
2.1 Gas calibration
- Place Monitox plus gas adapter (part # 569747) securely on the filter cap.
- Connect span gas.
NOTE: If using HCN, Cl
2
or other corrosive gases, use non-porus tubing such as
Tygon lined with teflon or polypropylene.
- Open gas cylinder. The recommended flow is 250 ml / min, for Phosgene: 500 ml / min.
-
Now push the “
CAL”
button while “
GCAL”
is active. The display flashes
“GCAL”
.
- When “
GCAL”
is steady, a stable measured value has been reached.
- Close the gas cylinder.
- Push “
Cal”
button.
- Now the display shows the most recently used span gas concentration. Confirm by pushing
“
Cal”
or alter by pushing and holding
“Cal”
.
- Your operation will be confirmed by the unit displaying
“Stor”.
- The Monitox will now perform another self test and then show the actual gas concentration.
- Move switch to
“ON”
position.
4
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