115
5.7.2 INSPECT ELECTRICAL DEVICES
1. Inspect in cold weather
In cold weather, remove the water, snow or mud covered on the wire, cable plug connectors,
switches, or sensors, as well as those parts, to avoid parts failures;
2. Inspect lighting equipment, etc.
1) First inspect the lights, horn, wiper and other electrical components to find out whether they
are fault-free or not;
2) If there is any error, then inspect the corresponding fuse to find out whether there is any error
according to the schematic, if there is any error, replace it;
3) If the relevant fuse has no error, then inspect the electric cable of each electric parts with the
entire vehicle charged with electricity, to inspect whether there is 24V voltage, if no voltage,
then inspect the power cable between electrical parts and the fuse is broken or not;
4) If the voltage is measured, please replace the relevant electric parts.
3. Inspection of Instrument and equipment
1) Powered launch vehicle, the inspection instrument table indicates whether the instrument
without fault;
Temperature (
℃
)
Comparison of the temperature sensor parameters
Resistance (Ω)
Permissible error (Ω)
40
340
+63/-69
50
226
+23.6/-26.6
60
153
+12/-14
70
108
+10/-11
75
92
+8/-9
80
76
+7/-8
90
56
+5/-6
100
40.4
+3.4/-4.5
110
30.3
+2.1/-3.4
120
23
+1.8/-2.3
140
16
+0.5/-0.6
Pressure sensor parameters comparison
NO.
1.0MPa hydraulic and pneumatic sensors
2.5MPa air pressure sensor
Pressure
(MPa)
Resistanc
e (Ω)
Permissible error
(Ω)
Pressure
(MPa)
Resistance
(Ω)
Permissible
error (Ω)
1
0.0
10.2
±5
0.0
10.2
±5
2
0.1
30
±5
0.25
30
±5