BUCHI ELS Detector C-650 - Manual (Page 20)

C-650 Operation Manual, Version B 5 Putting into operation 20
The blue cables are contact closure “input” cables that are used to power the unit down (see
section 6.5) via a signal from an external device to the detector..
Connecting the power cord:
Place the ON/OFF switch to the OFF position and plug the power cord into the socket on the rear
panel of the detector.
Do not turn on the power at this time.
The power cord of this detector contains three wires which must be connected to a grounded
line. All components of the chromatographic system should be connected to a common ground.
If a two wire outlet is used, make certain that an adapter is used to connect the third wire to
ground.
5.3 Gas supply
A supply of filtered, oil-free clean gas (e.g. N
2
or air if aqueous mobile phase) is required to oper-
ate the detector. Pure gas is not required as gas is only a carrier vector for the solid particles (e.g.
air from an air compressor is acceptable if unreactive with analysis).
The gas supply should include a pressure gauge. The pressure should be set at 2 bar. The unit
is connected to the gas supply via the 6.0 mm plastic tubing (supplied) using the fitting on the
upper left corner of the supply panel on the rear of the detector.
1
2
3
4
6
5
a Gas inlet
b RS-232
c External events d 1 V output
e External autozero
f Main power
Fig 5.7: Supply panel