3-4 | Model 931S / Model 932S UV Analyzers
General Installation Information
• Metric fasteners are used throughout the analyzer assembly. 2 mm,
2.5 mm, 3 mm, 4 mm, 5 mm, and 8 mm hexagonal wrenches are re-
quired for servicing the analyzer.
• The torque specification for fastening M6 screws is 4.0 ± 0.7 Nm
(36 ±9 in-lb). The torque specification for fastening M10 screws is 9.0
±1.0 Nm (80 ± 9 in-lb).
Tools and Equipment Required
To install the analyzer, you need the following tools, equipment, and
supplies:
• Set of open-end wrenches for fittings.
• Set of metric hexagonal wrenches.
• Set of metric ball drivers.
• Torque wrench, calibrated, for fastening M6 screws and M10 screws.
• Wire cutters, strippers, and crimpers.
• Flat blade instrument screwdriver.
• Electric drill.
• Soft, nonabrasive cloth.
• Wrist strap (for grounding).
• Detergent-based leak detector (Snoop
®
or another suitable leak detec-
tion agent is permissible).
• A coalescing or membrane filter (if one is not supplied as part of the
sample system) to be installed upstream of the Measuring Cell.
• One power-disconnect explosion-proof switch (breaker), rated for at
least 250 V
AC
, 4 A and certified for the hazardous location (to satisfy
local electrical codes, the switch must be certified by the local author-
ity for the appropriate hazardous location). The power-disconnect
switch (breaker) must be connected to and mounted near the analyzer,
in an easily accessible area. The switch (breaker) must be clearly la-
beled (e.g., “AMETEK Model 932 Analyzer Main AC Power Disconnect
Switch”). For safety reasons during maintenance, this switch allows
the main AC power to be disconnected from the analyzer prior to
performing service on the analyzer. This switch (breaker) is to be sup-
plied by the custom er/end user.
• Supply of 1/4" 316 stainless steel tubing for the Sample, Vent, and
Zero/Aspirator Drive Gas lines.
• Applications that return the sample gas to the sample stream through
a Heated Sample Probe will also require tubing for Aspirator Drive
Gas.
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