MAINTENANCE
7 - 10
7.5 Inlet
Connector
and
Filter
When a RAE-SEP tube is inserted into the monitor, both ends
of the tube are sealed with rubber fittings to make an airtight
connection for the gas inlet.
When a RAE-SEP tube is inserted into the Bar Code Reader
Cap, the tube end is pushed against the rubber tube connector
inside the sensor module, as shown in Figure 7-3. A porous
metal filter is inserted into the other end of the rubber tube
connector to prevent glass debris and dirt entering the sensor.
To ensure that the metal filter is not clogged by glass debris or
dirt, it is recommended that the metal filter should be replaced
with a new one at regular interval (4-6 weeks). After repeated
insertion, the rubber tube connector may be worn out. Replace
the rubber tube connector with a new one to ensure airtight seal
for the RAE-SEP tube.
Figure
7-6
Gas Inlet Assembly
Tube
holder cap
Tube cap nut
Metal tube
connector with
rubber adapter
Teflon tube
Spring
Ferrule
Tube holder
base
