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16
APPENDIX C - MANUAL SWITCH INSTRUCTIONS
The Model 8032 16/32 Channel Multiplexer directly supports manual switching of the
sensor leads. This feature allows the user to easily connect a manual readout and obtain
measurements in tandem with the automatic system. The manual switching components
are optional and must be specified at time of order. A number of switching
configurations are supported, consult the factory for additional information.
Depicted below is a manual switch arrangement for use with 16 vibrating wire sensors
and their respective thermistors. The multiplexer is configured for 4 channel switching.
To wire the terminal board remove the 4 panel mounting screws and lift out the panel.
The terminal board for making gage connections is underneath the switch panel.
5
4
3
2
1
GAGE
To obtain readings with the manual switching follow these steps;
1. Open the terminal box/multiplexer enclosure by opening the quick-release clasps
which secure the lid.
2. Connect the alligator clip leads of the readout to the respective posts on the front
panel. In the event the switch panel is equipped with a connector, plug in the cable
from the readout.
3. Switch to position 1 on the left switch. Sensor 1 is now connected to the posts and
will be read by the readout. Switch through all positions until 9-16 is reached. The
right switch will now control which sensor is connected to the clip lead posts. Switch
through positions 9-16.
4. When complete disconnect the clip leads, close the lid and fasten tightly with the two
clasps.
12 13 14
6
11
7
15
8
10
16
9-16
9
THERM
SHIELD
Figure 11 - Manual Switch Panel & Enclosure
Panel mounting screws
Switch panel
Terminal board/switch panel enclosure
Lid securing clasp
Switch for gages 9-16
Position to switch gages 9-16
Switch for gages 1-8
Shield connection (Blue)
Thermistor posts (White & Green)
Vibrating wire gage posts (Red & Black)
Lid securing clasp
Panel mounting screws
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