27
OELD Operating Instructions
7 OELD Mobile App
7.6 Calibration
The OELD App allows a user to calibrate the Searchpoint Optima Plus or Searchline Excel. Note that this feature is not available for
other gas detectors or sensors that may be used.
Caution
Searchpoint Optima Plus is factory calibrated and does not require routine calibration. In most cases, a re-zero will correct any
inaccuracy in the gas reading. It is strongly recommended that a span calibration is not carried out.
After establishing a connection between the mobile device and the OELD, tap on the Calibrate button on the main screen of the
OELD App.
1. Ensure that the gas detector is in fresh air and tap on the Zero button to start the zero calibration process
2. The OELD App will automatically inhibit the gas detector and initiate the zero calibration.
3. After a successful zero calibration has been completed a span calibration may be performed. Tap on the Span button to perform
a span calibration and complete steps 4 and 5 below. Otherwise tap on Exit Without Span to exit and ignore steps 4 and 5.
4. Apply calibration gas to the Searchpoint Optima Plus
5. Follow the on-screen prompts and wait until span calibration is complete
Refer to the Searchpoint Optima Plus or Searchline Excel Technical Handbook for full details on carrying out gas calibrations.
WARNING
•
As some calibration gases may be hazardous, always ensure that outlets from gassing accessories exhaust safely.
•
A cylinder of synthetic air (20.9 % vol. oxygen) should be used to perform the zero calibration if there is any doubt that the
atmosphere in which the detector is exposed may contain any trace of detectable gas.
