Calibration
Calibration ensures EXO’s gas sensors can accurately detect gas levels through their operating life. During calibration, you apply a known concentration of gas for a set amount of time to adjust the sensors’ parameters.
EXO automatically communicates the data collected from each calibration to Blackline Live when it is connected to the cellular or satellite network.
Calibration schedule
The calibration schedule can be configured to match your company's safety policy. These changes are made in the configuration profile in 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 procedure.
On start-up, 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 configurable in Blackline Live.
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, manual calibration will need to be repeated for each cylinder. In step 6 of the manual calibration procedure ( Manual Calibration section), ensure all the gas sensors that correspond to the attached cylinder's gas mixture are selected. The gas concentration of the connected gas cylinder should match the gas concentration listed in EXO's calibration gas configuration in Blackline Live.
Some cartridges require you to calibrate sensors in a specific order due to gas sensor cross sensitivity. Refer to G7 and EXO Gas Sensor Bump Testing and Calibration Order for more information.
