2-17
OPERATION
2.10 REMOTE SAMPLING (with pump option)
Warning: When making VOC measurements, only use the
Viton sample line as other sample lines may
absorb VOC’s resulting in incorrect readings.
Remote sensing is performed with the internal electric pump
(optional), or by the hand aspirator for non-reactive gases,
using the sample connector at the bottom of the instrument
and sample tubing supplied with your instrument.
On pumped models the pump is OFF after start-up.
Warning: For remote sampling, the internal pump is
recommended. If using the hand aspirator:
• Reading error of + 20% is typical
• Maximum sample line is 10 m
• Sample time will be extended
2.10.1 Pump Option
Press and hold the button to start or stop the pump. The
pump will run at normal speed for remote sampling.
When the pump Is running at normal speed, a pump symbol
rotates in the display as shown in Fig. 2.20.
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