Varian 900-LC Series Liquid Chromatograph
Fraction Collector
115-230 V AC, 50-60 Hz
264 VA
ELSD Detector
115-230 V AC, 50-60 Hz
480 VA
External RI Detector
115-230 V AC, 50-60 Hz
150 VA
Ethernet Switch
115-230 V AC, 50-60 Hz
7 VA
Personal computer (Typical)
115, 120, 220, 240 VAC
300 VA
Printer (Typical)
115, 120, 220, 240 VAC
85 VA
Table 4.
Power requirements
1.3.3
Gas Supplies
The installation of compressed or liquid gas supplies must comply
with the rules and/or regulations imposed by the local authorities
responsible for such use in the workplace.
The main gas supply requirement is nitrogen for supply to ELS
Detector. Nitrogen from a cylinder or nitrogen generator may be
used with Varian 900-LC Series Liquid Chromatograph ELS
Detector. Helium may also be required to if you are using a helium
sparging system to degas solvents. Consult the documentation
that came with your helium sparging system for gas requirements.
Nitrogen
Gas
Purity
>98% filtered to 0.2
μ
m
Permissible pressure
range
60 to 100 psi
(4–6.7 bar)
Maximum pressure
100 psi (6.7 bar) regulated
Required flow rates
Up to 3.25 L/min at 60 psi at 25 °C
1.3.3.1
Storage Cylinder Instructions
Cylinders containing gas under pressure should be firmly secured
to a rigid structure, and the storage area must be adequately
ventilated.
Never locate gas cylinders near a source of ignition, or in a
position that is subject to direct heat. Gas storage cylinders often
incorporate a pressure release device which will discharge the gas
at a predetermined temperature, usually around 52 °C (125 °F).
Publication date: December 2007
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