DX4040 INSTRUCTION AND OPERATING MANUAL (E2.04)
4.3.3
Front Panel
DX4040 front panel (Figure 10) gathers all functionalities of the analyser: gas
inlets/outlet fittings, DC power supply input, cable connection, power switch, LEDs and
Bluetooth module.
Figure 10.
Front panel: sample gas fittings and connectors of the DX4040 model.
4.3.3.1 Gas Fittings
All gas connectors in the DX4040 analyser are grouped together on the front panel. The
quick-connect fittings accept 6 mm OD PTFE or PFA tubing and the Gasmet 6 mm tube
adapter, which allows the use of more flexible tubing such as Tygon. The quick-connect
fittings engage the tube when the tube is pushed in, and the tube is released by
pressing the blue plastic collar while pulling the tube gently. The connectors for
SAMPLE IN, ZERO GAS IN and SYSTEM PURGE have check valves, which shut off
when the tube is uncoupled. The SAMPLE OUT connector has no valve and remains
open when uncoupled. A rotary connector cover protects the fittings when the DX4040
is not used.
Ensure that a sample tube is connected to SAMPLE IN connector before starting the
sample pump!
The sample gas connectors are (Figure 10):
29
