Teledyne 3000ZA2G - Zirconium oxide analyzer - Manual (Page 29)

Trace Oxygen Analyzer Installation
Teledyne Analytical Instruments 17
3.3.1 Gas Connections
All gas and exhaust connections are made to the labeled 1/4” tube
fittings (6 mm adapters for metric system installations are available) on
the rear panel. The rear panel connections are different between the
standard unit and one which includes the auto calibration option. For
safe connections:
1. Insert the tube into the fitting and finger-tighten the nut until
the tubing cannot be rotated freely by hand in the fitting. This
may require an additional 1/8 turn beyond finger tight.
2. Hold the fitting body steady with a backup wrench. Using
another wrench, rotate the nut another 1-1/4 turns.
SAMPLE IN:
In the standard model, gas connections are made at the SAMPLE IN and
EXHAUST OUT connections. Calibration gases must tee into the sample
inlet with appropriate valves (not supplied).
The inlet gas pressure should be reasonably regulated. Pressures
between 2 and 50 psig are acceptable as long as the pressure, once
established, will keep the front panel flowmeter reading in the
acceptable range.
Use the sample flow control valve on the front panel to adjust the
flow rate to within the acceptable range of 0.1-0.3 SLPM.
If greater sample flow is required for improved response time,
install a bypass in the sampling system upstream of the analyzer input.
SAMPLE VENT:
Exhaust connections must be consistent with the hazard level of the
constituent gases. Check local, state, and federal laws, and ensure that
the exhaust stream vents to an appropriately controlled area, if required.
REF IN/OUT:
Flowing air reference. Air must be clean, dry, and free of hydrocarbons.
Use the reference flow control valve on the front panel to adjust the flow
rate to within the acceptable range of 0.1-0.2 SLPM.
Note: It is possible to use the instrument without a flowing
reference however doing so will result in a marginal
reduction in performance and is not recommended for best
performance.