Campbell CS125, Инструкция по эксплуатации

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User Guide
23
Sensor ID break down
ID Definition
0-9 Unit number defined by the user to aid identification of data. Zero by default.
Useful for RS485 networks. Operates as an address in RS485 mode
System status break down
(1)
Status level Definition
0 No fault
1 Possible degraded performance
2 Degraded performance
3 Maintenance required
(1) System status break down reflects the highest level of severity of any active alarm.
Message interval
Time Definition
1-3600 The amount of time, in seconds, between outputs in continuous mode
Visibility distance break down
ID Definition
0-75,000 metres Current visibility distance being detected by the sensor
Visibility units break down
ID Definition
M Metres
F Feet
Averaging duration break down (see note below)
ID Definition
1 One minute average
10 Ten minute average
Note: In accordance with WMO requirements the CS125 produces visibility measurement that are either one or ten minute rolling
averages that are updated at the chosen output interval or when the sensor is polled. Those averages are not direct averages of
MOR measurements but are averages of extinction coefficient and that average is then used to calculate the MOR for that period.
As the relationship between extinction coefficient and MOR is not linear it is possible to see quite rapid changes in MOR that
might not be expected if the result was a rolling average of MOR. Please consider this, especially when testing the sensor with
artificial obscurants or using the calibration disc.
User alarms
ID Range Definition
1 0-1 Visibility either less or greater than a user specified threshold
2 0-1 Visibility either less or greater than a user specified threshold
System alarms break down
Alarm Range Severity
(2)
Definition
Emitter failure 0-2
(1)
3 The emitter hoods main LED output power level.
0 = Everything is within normal parameters
1 = Light output level too low
2 = Light output level too high
Emitter lens
dirty
0-3 1 0 = OK. The reported attenuation is below 10%.
1 = Reported window signal value is too low (Possible sensor
fault)
2 = Slight dirt build up (10% signal attenuation or higher)
3 = High level of dirt build up (The hood could be blocked)