4.5 Using the Menus and Key Functions
To enter the setup menu press
The following menus will appear: -
.
Series 300 & 305 Menu
Series 500 & 505 Menu (V5.5 and above)
Press
or
to scroll to the desired menu.
4.6 Calibration
To access the calibration menu, scroll down and hold
and
simultaneously for approximately 2 seconds. Once the calibration menu
has been entered, users can select „ZERO CAL‟ or „SPAN CAL‟.
4.61 Zero Calibration
The “ZERO CAL” routine resets the zero point of the monitor.
This routine must be conducted under controlled conditions:
Minimum 24 hours warm up
Clean air (charcoal filtered is best), no cross-sensitive gases
Stable and low air flow around the monitor
No vibration or movement of the monitor
Temperature at 20°C ± 2°C (68°F ± 3.5°F)
Relative Humidity of 50% ± 5%
An incorrect "ZERO CAL" does not cause permanent damage.
The process should be repeated under the above conditions.
NOTE: Carbon Dioxide sensors MUST be calibrated in a certi-
fied Zero Air environment. If in doubt contact Aeroqual Limited.
Press and hold
until the word
GO
appears next to Reset
Routine. The routine will run for up to ten minutes (depending on
the gas sensor installed) and then beep to indicate completion.
Talk to your supplier or distributor if you have questions
.
See section 11.9 for more information
4.62 Span Calibration
Span calibration, located in the ‟CALIBRATION‟ menu, provides an
option to adjust the span of Aeroqual sensor heads. Once entered,
users can adjust the gain factor of their sensor.
EXIT
ALARM POINTS
CONTROL POINTS
UNITS
MAX MIN AV
ZERO CAL
EXIT
CLOCK SETUP
LOGGING SETUP
ALARM POINTS
CONTROL POINTS
UNITS
MAX MIN AV
CALIBRATE
