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Attach the hose of the Adapter to the calibration gas cylinder and begin flowing gas
to the cap at a flow rate of 500 cc/min. (300 cc/min. for Cl
2
and
ClO
2
). When the
instrument detects the gas, the display will change to one of the following screens:
<gas> SENSOR
For Toxic Gases SPAN CALIBRATION
<time> seconds
The display will count down <seconds> (See chart below for applicable sen-
sor) after which the instrument will display the message “SPAN CALIBRA-
TION PASSED ACKNOWLEDGE”. Press either button to return to the Oper-
ating Mode showing the gas concentration. If the user does not acknowl-
edge within 2 minutes, the instrument returns to Operating Mode automati-
cally. In either case, the calibration is accepted as valid. If the calibration
gas concentration exceeds the alarm setpoint, the alarm will operate. Turn
off the gas supply and remove the Calibration Adapter.
If, during “SPAN CALIBRATION”, the unit detects that the sensor is out of
range, an error message will be displayed. See Section 7.0 for a description
of error messages.
Ammonia (NH )
3
2
Chlorine(Cl )
2
Chlorine Dioxide (ClO )
Carbon Monoxide (CO 500)
Carbon Monoxide (CO 1000)
Hydrogen Cyanide (HCN)
2
Hydrogen Sulfide (H S 100)
3
Phosphine (PH )
2
Sulfur Dioxide (SO )
60
120
90
180
90
60
180
300
180
Hydrogen Sulfide (H S 500)60
2
90 Nitrogen Dioxide (NO )
2
Max. Span
Toxic Sensor
Cal Time
in Seconds
Applicable