Sensor Lead Cable - Omega CYD211 User Manual

Pin
1 No Connection
2 Shield
3 I+
4 V+
5 Shield
6 Analog Output Signal
7 No Connection
8 Low Alarm COM
9 Low Alarm N.C.
10 No Connection
11 High Alarm COM
12 High Alarm N.C.
13 No Connection
2.5.2

Sensor Lead Cable

The sensor lead cable used outside the cooling system can be much
different from what is used inside. Between the instrument and vacuum
shroud, heat leak is not a problem, but errors from noise pick up need to be
minimized. Larger conductor, 22 to 28 AWG stranded copper wire is
recommended because it has low resistance yet remains flexible when
several wires are bundled in a cable. The arrangement of wires in a cable is
also important. For best results, twist voltage leads, V+ and V– together and
twist current leads I+ and I– together. Cover the twisted pairs of voltage and
current leads with a braided or foil shield connected to the shield pin of the
instrument. This type of cable is available through local electronics
suppliers. Instrument specifications are given assuming 10 feet of sensor
cable. Longer cables, 100 feet or more, can be used but environmental
conditions may degrade accuracy and noise specifications.
2-4
Omega Model CYD211 User's Manual
Description
Figure 2-3. Input/Output Connector
Pin Description
— —
14 Shield
15 I–
16 V–
17 Shield
18 Analog Output Ground
19 No Connection
20 Low Alarm N.O.
21 No Connection
22 No Connection
23 High Alarm N.O.
24 No Connection
25 No Connection
P-211-2-3.bmp
Installation