Teledyne 3000TA-XLEU - Trace oxygen analyzer - Manual (Page 38)

Installation 3000TA-XL-EU
Teledyne Analytical Instruments 22
SAMPLE IN:
In the standard model, gas connections are made at the SAMPLE
IN and EXHAUST OUT connections. Calibration gases must be tee'd
into the sample inlet with appropriate valves. A VCR fitting is provided
for the inlet connection.
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 an acceptable
range (0.5 to 2.0 SLPM). For non-pressurized sample or very low
pressure, (less than 2 psig) vacuum service plumbing is recommended.
(See Vacuum Service below).
If greater sample flow is required for improved response time,
install a bypass in the sampling system upstream of the analyzer input.
VACUUM SERVICE:
If the sample pressure is at atmospheric or very low pressure, the
instrument must be ordered with the vacuum service option. This will
ensure that the flow control valve is located on the exhaust side of the
Micro-Fuel Cell.
EXHAUST OUT:
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.
3.3.2 Electrical Connections
For safe connections, no uninsulated wiring should be able to come
in contact with fingers, tools or clothing during normal operation.
CAUTION: USE SHIELDED CABLES. ALSO, USE PLUGS THAT
PROVIDE EXCELLENT EMI/RFI PROTECTION. THE
PLUG CASE MUST BE CONNECTED TO THE CABLE
SHIELD, AND IT MUST BE TIGHTLY FASTENED TO
THE ANALYZER WITH ITS FASTENING SCREWS.
ULTIMATELY, IT IS THE INSTALLER WHO ENSURES
THAT THE CONNECTIONS PROVIDE ADEQUATE
EMI/RFI SIELDING.