Dräger VarioGard, Инструкция по эксплуатации, Страница: 47 / 280

Dräger VarioGard 47
Maintenance
9.2 Sensitivity calibration VarioGard 3000 EC / VarioGard 3200 CAT / VarioGard 33x0 IR
Action Status display
Output
signal
Meaning
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
depending on
configuration
Measure-
ment mode
Launch VarioCal software.
Select the devices to be
calibrated (individual or
groups of the same type
or all transmitters).
Set the maintenance
mode
Green flashes Mainte-
nance mode Transmitters switch
from measurement
mode to
maintenance mode.
Insert the instrument for the span calibration:
Place the magnetic wand
on the marking »
«
for 2 seconds and then
remove it again.
Green/yellow
flashes
alternately
Mainte-
nance mode
Calibration routine
has started.
Measurement
value outside
the permitted
calibration range.
Attach the calibration
adapter VarioGard 3x00.
Expose the transmitter to
calibration gas with min.
0.5 L/min.
Ensure that the sensor is
fully purged with the
selected calibration gas.
Action Status display
Output
signal
Meaning
Stabilise the span signal:
Continue supplying the
selected calibration gas.
Yellow flashes
slowly Mainte-
nance mode
Measurement value
within the calibration
range.
Stability of
measurement value
2 times greater than
calibration limit.
Yellow flashes
quickly Mainte-
nance mode
Measurement value
within the calibration
range.
Stability of
measurement value
1 times greater than
calibration limit.
Yellow on
Mainte-
nance mode
Measurement value
within the calibration
range.
Stability of measure-
ment value is OK.
Can be adjusted.
Carry out sensitivity adjustment:
Place the magnetic wand
on the marking »
«
for 2 seconds and then
remove it again.
Green flashes Mainte-
nance mode Being adjusted.
Stop the calibration gas.
Remove the calibration
adaptor VarioGard 3x00.
Ensure that the transmitter
is no longer being purged
with calibration gas. When the action has been completed, the transmitter
must be switched back to measurement mode using
the VarioCal software, or if no actions have been
carried out on the transmitter for 3 hours, it will
automatically switch from maintenance mode to
measurement mode. The calibrations that were
successfully carried out will be accepted.