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Clarity - INT9 A/D converter Installation
8
Starting cable
Signal cable
START (REMOTE, …)
Red
Shielding
SYMMETRICAL CONNECTION
+ (+1V, Hi, …)
- (-1V, Lo, …)
COM (0, GND)
Red
Shielding
White
Digital output (Relay)
START (REMOTE, …)
1V (100mV, Hi, +, …)
0 (COM, AGND, …)
NONSYMMETRICAL CONNECTION
Red
Shielding
Red
Shielding
White
Starting cable
Signal cable
Digital output (Relay)
Fig. 2. Connecting Clarity to chromatograph
2.3.1 Connecting signal cables:
Signal inputs of the A/D converters are
symmetrical: + (red), - (white) and analogue
ground (copper braiding).
Caution! Shielding must be connected. It serves not only as
the shielding but also as the analogue earth
against which the measurement takes place. In
the case of asymmetrical output of a detector (only
two connectors) the shielding must be connected
to the white lead! No lead of the signal cable may
remain unconnected.
Try to connect to the detector output of the
chromatograph with the largest possible signal
level, usually indicated as INTEGRATOR
(signal approx. 1V). The level of the signal on
the output marked RECORDER is usually only
approx. 10mV.
For easier alterations of the wiring, we supply a
SV8 Terminal board with screw contacts for
INT7, INT9, U-PAD, U-PAD2 and Net-PAD
A/D converters.
Note: This SV8 Terminal Board is not suitable for
applications with small signals or with high
electromagnetic interference. This is because the SV8
Terminal Board uses leads and screw contacts that
are not shielded.