Wiring
Power Supply Wiring
Power to the Ion
Chamber Detector
wer to the Ion
Chamber Detector
The 9701/9702 ion chamber detectors may be operated using either 115 or
230 Vac ± 10%. The maximum input power requirement is 500 VA.
When connecting power to the 9701/9702 detectors, refer to installation
wiring drawing 868697.
Note Connect the AC wiring Earth ground to the internal safety ground
terminal provided on the inside of the detector housing as shown in the
wiring diagram. ▲
Caution Applying 230 Vac with the selector switch in the 115 Vac
position will damage the equipment. ▲
The ion chamber detector is shipped wired for either 115 or 230 Vac
operation. If necessary, the detector’s operating voltage can be changed by
following the procedure below.
1. The two red wires should be installed on the marked push-on tabs
(RED1 and RED2).
2. Install the four heater wires (two white wires and two black wires) on
the push-on tabs as follows:
a. One white wire on the Wh tab.
b. One black wire on the Bk tab.
c. For 115 Vac operation:
- One white wire on the Wh/115 tab.
- One black wire on the Bk/115 tab.
d. For 230 Vac operation:
- One white wire on the Wh/230 tab.
- One black wire on the tab Bk/230 tab.
3. Set the 115/230 Vac selection switch (located next to the transformer)
to the desired voltage.
Caution For reliable operation and to maintain safety approval, the F1 fuse
on the AC power board must only be replaced with an approved fuse.
Reference installation wiring diagram 868697. ▲
Thermo Fisher Scientific DensityPRO+ Installation Guide 4-9
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