Product Guide
VESDA ECO Detector by Xtralis
52
Configuration
17898_05
Calibration Delay Period – The delay applied after initiating the calibration before
averaging of the gas reading is begun. This allows the gas level to reach a stable
condition, normally will be twice the Sensor T
90
time.
•
Calibration Period – The time over which the gas reading is averaged to
generate an accurate and stable calibration value.
•
Gas Applied – The concentration of the applied calibration gas must be
correctly entered here to facilitate an accurate calibration. This should be
supplied with or on the calibration gas cylinder.
The ‘Calibration Delay Period’, ‘Calibration Period’ and ‘Gas Applied’ fields are
set by default from the factory for optimized calibration of the relative gas sensor.
These should only be changed if the installation requires it and by a suitably trained
operator.
Introduce the correct calibration gas for the sensor being calibrated to the ECO
calibration port at a rate of 2 Litres/Minute and then click the ‘Run Calibration’
button.
Calibration will start. The ‘Calibration in Progress’ entry on the ‘Detail status’ tab
will now show ‘On’ as shown in Figure 38.
Figure 38 Calibration Status
Once calibration is complete the ‘Calibration in Progress’ entry on the ‘Detail
status’ tab will return to ‘Off’.
Notes:
i)
Before calibration can be performed the ECO detector MUST have
been powered up for at least 5 Minutes. Attempting to calibrate before
this time period expires is prevented by the unit. It is recommended
that the unit is allowed to stabilize for 30 minutes prior to calibration.
ii)
The value of the ‘Gas Applied’ to be entered will be specified on the
calibration gas bottle.