Campbell Scientific CS125 Present Weather Sensor - Manual (Page 29)

User Guide
21
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)
Emitter
temperature 0-3 1 or 2 0 = Temperature is within operating conditions
1 = Too low. Less than -40°C.
2 = Too high. Over 80°C.
3 = No sensor detected or below -54°C (Severity 2)
Detector 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)
Detector
temperature 0-3 1 or 2 0 = Temperature is within operating conditions.
1 = Too low. Less than -40°C.
2 = Too high. Over 80°C.
3 = No sensor detected or below -54°C (Severity 2)
Detector DC
saturation
level 0-1 1 The amount of background light as seen by the detector hood.
0 = Within limits
1 = Saturated. The CS125 no longer has enough head room to
perform visibility readings in most circumstances.
Hood
temperature 0-3 1 or 2 0 = Temperature is within operating conditions.
1 = Too low. Less than -40°C.
2 = Too high. Over 80°C.
3 = No sensor detected or below -56°C (Severity 2)
External
temperature 0-3 1 or 2 0 = Temperature is within operating conditions.
1 = Too low. Less than -40°C.
2 = Too high. Over 80°C.
3 = No sensor detected or below -54°C (Severity 2)
Signature
error 0-1 3 0 = Signature of entire flash matches the stored version
1 = Signature does not match previous readings
Flash read
error 0-1 3 0 = No errors
1 = One or more errors reading user variables from flash
occurred
Flash write
error 0-1 3 0 = No errors
1 = One or more errors writing user variables to flash occurred
Particle limit 0-1 1 0 = No errors
1 = More particles detected than can be processed.
(1) The emitter power level reporting too high will cause the CS125 to shut down and go into low power mode.
(2) The severity of the alarm. The higher the number the more serious the error is considered to be.