Berthold MicroPolar LB 566, Руководство пользователя

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Chapter 3. System Description
30 MicroPolar (++) LB 566
3.5.5 High-frequency Cable
High-frequency cables (HF cable) are used to transmit micro-
wave signals.
HF cables change their conductivity (for microwaves) with tem-
perature and would therefore produce measurement errors with
varying ambient temperature. This error is compensated for by
enabling the automatic cable compensation. The influences of
the ambient temperature on the signal cable are compensated
for by means of the reference cable. To this end, the sum of the
reference cables has to match the length of the sum of the sig-
nal cables.
Two different HF cable types of different lengths are available:
Version 1: The so-called HF-cable quad: It consists of four sin-
gle HF-cables of equal length, whose ends are terminated by
one HF-connector (N-type). Available cable lengths: 2, 4, 6 and
10 m (see Figure 3-17).
The HF-cable quad is used exclusively for the
container probe
and the FlowCell . For the FlowCell, the reference line on the
probe side is short-circuited using an N-connector (see Figure 3-
18).
Figure 3-17:
HF cable quad
Lengths 2, 4, 6 and 10 m
Corrugated tube
4 x N-connector
ø
18.5 mm
0.35 m
0.35 m
4 x N-
4 x N-connector