Delivery mode
36
Aircraft Refuelling, Operating Instructions, BA 090323, (07.03.2022)
Status bits
Bit in Hex
Description
0x0000
Sensor Ok
0x0001
Difference between the currently extrapolated differential pressure and the value
measured last via the maximum deviation
0x0002
Currently extrapolated differential pressure exceeds max. differential pressure
0x0004
No sensor connected
0x0008
Sensor defective
0x0010
Check configuration
0x0020
Max. flow exceeded
0x0040
Min. flow has not been reached
0x0080
Pressure warning has been output
0x0100
Fuel-filling lock has been triggered
0x0200
Error message has been simulated
If the differential pressure deviation is not permissible, System 3003 only activates
one logical output. The setup person must ensure that the output is used correctly.
See also the service and configuration instructions.
4.8.8 Water content
If the system has been fitted with a differential pressure sensor, the water content in the product will be
monitored during fuel-filling. Either the measured ppm value or the ppm value averaged over the
duration of fuel filling can be used to monitor the warning and alarm limits. Monitoring and averaging
only take place when a minimum flow rate and a minimum volume have been exceeded. The proportion
of water used for monitoring is shown on the display.
If the differential pressure deviates from the parameters stored in the configuration, a corresponding
dialog message will appear and fuel-filling will be interrupted or blocked, depending on the configuration.
The dialog message must be confirmed by the operator. The system also has an output for triggering a
warning light. For detailed information, see also the chapter "FAUDI Aviation Sensor AFGUARD water
sensor - functional description" in the service instructions.
Error events
Event
Level
Description
1
Warning
15 ppm** <= ppm value* <30 ppm** within a period of 10 s**
2
Alarm
ppm value* >= 30 ppm** within a period of 10 s**
3
Alarm
ppm measurement value >=50 ppm within a period of 5 s**
4
Alarm
Sensor value
absolutee value
< 3.8 mA
* the ppm value will correspond to the measured ppm value or the ppm value averaged over the duration of fuel-filling, depending
on the configuration.
** Value can be configured.
