Sensitivity Calibration Variogard 3000 Ec / Variogard 3200 Cat / Variogard 33X0 Ir - Dräger VarioGard Notice D'utilisation

9.2

Sensitivity calibration VarioGard 3000 EC / VarioGard 3200 CAT / VarioGard 33x0 IR

Action Status display
Prepare the device for span calibration:
Use USB-PC-adapter
(order no. 83 22 016) to
connect Vario Gard centre
with PC.
Green on or off
Launch VarioCal software. depending on
configuration
Select the devices to be
calibrated (individual or
groups of the same type
or all transmitters).
Set the maintenance Green flashes
mode
Insert the instrument for the span calibration:
Place the magnetic wand
on the marking » «
for 2 seconds and then
remove it again.
Attach the calibration
Green/yellow
adapter VarioGard 3x00.
flashes
Expose the transmitter to
alternately
calibration gas with min.
0.5 L/min.
Ensure that the sensor is
fully purged with the
selected calibration gas.
Dräger VarioGard
Output
Meaning
signal
Measure-
ment mode
Mainte- Transmitters switch
nance mode from measurement
mode to
maintenance mode.
Calibration routine
has started.
Mainte- Measurement
nance mode value outside
the permitted
calibration range.
Action Status display
Stabilise the span signal:
Yellow flashes
slowly
Continue supplying the
Yellow flashes
selected calibration gas.
quickly
Yellow on
Carry out sensitivity adjustment:
Place the magnetic wand Green flashes
on the marking » «
for 2 seconds and then
remove it again.
Stop the calibration gas. When the action has been completed, the transmitter
Remove the calibration must be switched back to measurement mode using
adaptor VarioGard 3x00. the VarioCal software, or if no actions have been
Ensure that the transmitter carried out on the transmitter for 3 hours, it will
is no longer being purged automatically switch from maintenance mode to
with calibration gas. measurement mode. The calibrations that were
successfully carried out will be accepted.
Maintenance
Output
Meaning
signal
Measurement value
within the calibration
range.
Mainte-
Stability of
nance mode
measurement value
2 times greater than
calibration limit.
Measurement value
within the calibration
range.
Mainte-
Stability of
nance mode
measurement value
1 times greater than
calibration limit.
Measurement value
within the calibration
Mainte- range.
nance mode Stability of measure-
ment value is OK.
Can be adjusted.
Mainte- Being adjusted.
nance mode
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