Buck 1011C, Руководство по эксплуатации

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The sensor should be mounted as shown in Figure 7. Initially, orient the sensor so the inlet
fitting points downstream, parallel to the airstream, with the inlet and exhaust holes
pointed downwards. As soon as practical, adjust for proper flow and pressure change in
the cavity, according to Section 3.5.
Power Unit
Wire up cables and connect the proper cables (they are coded to prevent mismatch).
+28VDC must be used. Using any other power will damage the unit and void the warranty.
Control/Indicator Unit
If practicable, mount so that the front panel is accessible during flight. Make sure function
switch S-1 is in OFF position. Connect cable.
Cable Length
Standard cable lengths may be extended as follows on special order:
Sensing unit to power unit: 3 feet (1m) standard, may go to 50 feet.
Control/Indicator to power unit: 3 feet (1m) standard, may go to 150 feet.
It is essential that cables be identical in quality and configuration to that of original
equipment or the cable specified in the drawings. Specifically, that there are 7 pairs of
shielded 24 gauge wires and 2 pair of shielded 18 gauge wires contained in the cable used
for connecting between the power unit and the control/indicator unit and the cable used for
connecting the power unit to the sensor unit. It would also be acceptable to make a cable
using 9 separate cables that are shielded, twisted-pair (7 of them 24 gauge and 2 of them
18 gauge) and wrapping them together Make sure that there is an overall, braided shield
surrounding these cables and attached at both ends to the connector. Use of non-standard
cable may cause operational problems and make the unit more susceptible to noise and
electrostatic discharge.
Sensor Body Temperature
There is a trade-off involved in the degree to which the sensor body is thermally coupled to
the outside ambient temperature. If it is held closely to outside temperature, the
thermoelectric cooler will have the lightest cooling load, and the instrument will be able to
achieve maximum performance at very low frost points (high altitudes); it may, however,
become flooded on descent when the cold sensor body suddenly encounters warm moist
air. If on the other hand, the sensor body is strongly influenced by the heated cabin, the
reverse will be true: better stability on descent, but reduced performance at frost points
below -50° C. In practice, normal mounting on