Dräger PIR 7000 Technical Handbook page 30

Accessories
Mounting:
1 Fit calibration adapter to splash guard of
gas transmitter until it snaps into place.
Make sure that the sealing surfaces
around the openings of the splash guard
are clean (clean before gassing, if
required). The insect guard PIR 7000
(part no. 6811609) does not need to be
removed for gassing.
— Calibrating the gas transmitter is only
possible when the supplied test gas
concentration in the measuring cuvette of
the gas transmitter is sufficiently stabile.
Therefore, the time required for
calibration is greatly dependent on the
gas flow, the hose diameter and the
length of the hose between test gas
container and calibration adapter.
— The gas rate of the test gas should be
between 0.5 and 2.0 L/min and never fall
short of 0.5 L/min.
In the case of strong wind (wind speeds greater than 30 m/s, 11 Beaufort) there is a risk of
test gas mixing with the ambient air. This may lead to incorrect calibration gas
concentrations.
Detach the calibration adapter from the splash guard of the gas transmitter once the
calibration has been completed. The gas transmitter is not operational when the calibration
adapter is connected.
Remove calibration adapter:
Gently pull on the hose connector of the calibration adapter; the calibration adapter snaps
out.
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NOTICE
NOTICE
1