153050-OLV Division 2 Sample System
Isolation Valve
The isolation valve provides barrier (i.e. - a means of turning off the flow of sample gas),
upstream of the analyzer, so that the analyzer can be worked on (normal maintenance,
etc.). AMETEK recommends that an isolation valve is installed upstream of the analyzer,
and preferably at the sample tap. Because AMETEK recommends that this valve is installed
at the sample tap, we have not included it as part of the sample system package. It is the
customer’s responsibility to install a process isolation valve, prior to the installation of the
analyzer.
Power Terminal Junction Box
For convenience in installation and maintenance, the 3050 OLV sample systems are pro-
vided with a junction box (optional) for wiring the power, and signal, connections. The
wiring of the terminal strips in the junction boxes is consistent across all of the 3050 sample
systems (see Figure 2), but the box construction varies with the specific hazardous area
requirements.
Vortec Cooler
The vortec cooler uses filtered compressed air to cool industrial control cabinets without
the use of refrigerants. Hot air in the cabinet is vented to the surroundings through a
built in relief valve in the cooler. The mechnical thermostat is set to maintain the internal
cabinet temperature between 90 and 110°F.
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