Mount the Toxgard II Monitor or the Remote Sensing Module with
its sensor inlet fitting (FIGURE 1-1 or 1-2) pointed downwards;
otherwise, the inlet may become clogged with particulate matter
or liquids. Do not paint the Toxgard II Monitor. If painting is done
in an area where a sensor is located, exercise CAUTION to ensure
paint is not deposited on the sensor inlet fitting. Such paint deposits
would interfere with the diffusion process, whereby a sample of
the monitored atmosphere diffuses into the sensor. Failure to follow
the above can result in serious personal injury or death.
"
CAUTION
Protect the Toxgard II Monitor from extreme vibration. Do not mount
the sensing head in direct sunlight as this may cause the sensor
to overheat.
Ventilation patterns must be established before positioning the
Toxgard II unit or sensor assembly. Smoke tubes (P/N 458481)
are useful in measuring the direction and rate of air flow to
determine areas where the gas of interest may tend to
accumulate.
Using suitable hardware (not supplied), mount the Toxgard II
monitor to any flat surface via its four mounting lugs (see
FIGURE 1-6). Allow sufficient room to open the unit front door.
The Toxgard II unit is designed to meet NEMA 4X requirements,
suitable for many damp, wet and/or outdoor locations.
Gas Sampling Options
Although the Toxgard II unit normally operates in the diffusion
mode (i.e., gases or vapors to be detected enter the sensor input
by natural molecular diffusion), a sample can be drawn into the
instrument if the DC pump or air aspirator option was purchased.
The Toxgard II Pump or Aspirator Model:
• draws a gas sample from the monitored area, through a sample
line (available separately) to the Toxgard II Gas Monitor sensor
• samples areas that are remote, inaccessible, too hot or too cold
for direct sensor monitoring, such as:
• ducts carrying combustible or toxic gas
• wet wells
• printing drying ovens
• blanking or inerting operations
• has electronics physically located in the main monitor enclosure
(FIGURE 1-1)
Chapter 1, Set-up
1-5
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