Lakeshore 211 - Input;Output Connector Pinout; Sensor Lead Cable Considerations

Lake Shore Model 211 User’s Manual
2-
4
Installation
2.6.1 Input/Output Connector
Sensors are connected to the Model 211 through the Input/Output connector
on the rear panel of the instrument. The Input/Output connector is also used
for the analog output and relay connections. Refer to Figure 2-3 for pin
descriptions.
P-211-2-3.bmp
Pin
Description
Pin
Description
1
No Connection
—
—
2
Shield
14
Shield
3
I+
15
I–
4
V+
16
V–
5
Shield
17
Shield
6
Analog Output Signal
18
Analog Output Ground
7
No Connection
19
No Connection
8
Low Alarm COM
20
Low Alarm NO
9
Low Alarm NC
21
No Connection
10
No Connection
22
No Connection
11
High Alarm COM
23
High Alarm NO
12
High Alarm NC
24
No Connection
13
No Connection
25
No Connection
Figure 2-3. Input/Output Connector
2.6.2 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.