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Calibration
2. When the multi-gas Auto Calibration is complete, a double beep
prompts the user to begin the non-standard sensor calibration(s). The
default gas concentration is displayed with the ADJ icon. Change the
concentration if the gas cylinder does not match the concentration
displayed.
3. Once the concentrations match, Press
→
to begin the calibration.
4. Apply the calibration gas and follow the prompts to complete the
calibration process. When the first non-standard sensor is complete,
and a second non-standard sensor is present, a double beep prompts the
user to begin the second sensor calibration. Repeat steps 2, 3 and 4.
WARNING
Avoid using a gas mixture containing H
2
S for calibrating an
instrument with Cl
2
, NH
3
, NO
2
or PH
3
sensors.
Manual Calibration
WARNING
Calibrate the Innova in a “fresh air” environment (environment
known to be free of combustible and toxic gases and of normal
oxygen content).
1. Hold down the
AIR
button for 3 seconds until the display counts down
and the bar graph starts to scroll, then the display will read
“DONE”
once the “fresh air” reading for all active sensors is complete (20.9%
for oxygen, 0 for all other sensors).
NOTE
After you complete the fresh air adjustment, a
“XXX”
may appear on
the display screen in place of a sensor reading. The buzzer and lights
will be on steady, see the Calibration Alarms section at the end of this
chapter to respond to this message.
2. Press and hold
↑
and
↓
for 3 seconds. The
“FEATURES MENU”
appears on the display and counts down from 3 seconds. Then displays
“BEGIN CAL”
.
3. Press
→
to accept and begin calibration. If a Calword has not enabled,
the
“AUTO CAL”
screen is displayed.
NOTE
If prompted by
“CALWORD”
and
“***”
, enter a password, see
Entering CalWord earlier in this chapter.
