User's Manual
22 || G7 EXO TECHNICAL USER MANUAL
7.2 CALIBRATION
What is calibration?
Calibration ensures EXO can accurately detect gas. This procedure
adjusts sensor parameters while the sensors are exposed to a known
concentration of gas for a set amount of time. Calibrations will need
to be done periodically throughout a sensor’s operating life and the
data collected from each procedure will be sent to the Blackline Safety
Cloud automatically.
Calibration schedule
The calibration schedule can be congured to match your company’s
safety policy. These changes are made in the conguration prole on
Blackline Live. All the sensors on a cartridge will have the same calibration
schedule, but if you choose to calibrate sensors individually, they can
become due independent of the other sensors. Blackline recommends
calibrating all the sensors on a cartridge in a single calibration process. On
startup EXO will display when the sensors’ next calibrations are due. By
default, an overdue calibration will cause a reminder message to display in
the banner on the gas status screen. This overdue response is congurable
on Blackline Live.
NOTE: Blackline recommends not exceeding 180 days without a calibration.
Gas cylinders
Sensors can be manually calibrated at the same time using one gas
cylinder or individually using multiple gas cylinders. If using multiple
cylinders, the manual calibration process will need to be repeated for
each cylinder. In step 4 of the calibration process below, ensure all the
gas sensors that correspond to the attached cylinder’s gas mixture
are checked. The gas concentration of the connected gas cylinder
should match the gas concentration listed in EXO’s calibration gas
conguration in Blackline Live.
NOTE: Some cartridges require you to calibrate sensors in a specic
order due to gas sensor cross sensitivity. Contact your safety supervisor
to learn more.
MANUAL CALIBRATION
You will need:
A cylinder(s) containing the appropriate gases
A 0.5 LPM or 1 LPM xed ow regulator attached to the cylinder(s)
Tubing tted with a quick connect coupling insert
To start,
1. Ensure G7 EXO is in clean air
2. Press the OK button to enter the main menu
3. Select Gas options
4. Select Calibration
5. You will see a screen listing the congured calibration settings,
followed by a screen that says, “Continue with calibration?”. Select Yes.
Tubing connected to EXO’s manual calibration inlet