Dräger PIR 3000, Instructions For Use Manual

Page: 7 / 64

7
Installing the Gas Transmitter
The splash guard is held by a fixture provided with screw-thread, which is also used
as calibration adapter.
Make sure that the calibration adapter is correctly seated. To this end, manually
tighten the calibration adapter to a point where the sealing line leaves a permanent
mark on the splash guard.
Gas Exposure / Process Adapter ( see "Accessories/Spare parts" on page 27 )
For continuous flow operation of the gas transmitter, the calibration adapter can be
replaced with an optional gas exposure / process adapter.
— Suitable for flow rates between 1 and 3 L/min.
— Within the specified technical measurement characteristics suitable for pressure
differences relative to ambient pressure of up to ±300 hPa.
— Use external pump to ensure gas flow.
— External flow monitoring required.
— Also suitable for calibration gas application.
Assembly:
 Unscrew the calibration adapter from the gas transmitter. While doing so, leave
splash guard on the gas transmitter.
 Screw gas exposure / process adapter onto the gas transmitter and tighten firmly
by hand.
 In the case of pipelines and hose lines carrying gas ensure that there is stability
with regard to ambient conditions and material compatibility for the substances
flowing through them.
 With regard to the length of the pipelines or hose lines observe the increase in
the response time.
 Ensure the compatibility of the connection spouts to be used regarding the
pipeline and hose line dimensions.
 Check the gas-carrying system for leaks, e.g. with a soap bubble test.
Dirt Deflector ( see "Accessories/Spare parts" on page 27 )
Instead of the calibration adapter, a double-walled dirt deflector can optionally be
fitted to the gas transmitter. This is recommended if there is an increased risk of
contamination from e.g. salt crusts, oil films, resin or similar substances, and also
generally for outdoor applications. In addition to the dirt deflector, the use of a
splash guard is strongly recommended.
 Also suitable for calibration gas application.
Assembly:
— Unscrew the calibration adapter from the gas transmitter. While doing so, leave
splash guard on the gas transmitter.
— Manually tighten the dirt deflector on the gas transmitter to a point where the
sealing line leaves a permanent mark on the splash guard.
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