CS500-LC TEMPERATURE AND RELATIVE HUMIDITY PROBE FOR METDATA1
3
03:
P1
Volt (SE)
01:
1
Rep
02:
25
2500 mV 60 Hz rejection
Range
03:
2
IN Chan
04:
1*
Loc [:Temp_C ]
05:
.1**
Mult
06:
-40
Offset
04:
P1
Volt (SE)
01:
1
Rep
02:
25
2500 mV 60 Hz rejection
Range
03:
1
IN Chan
04:
2*
Loc [:RH_prc ]
05:
.1
Mult
06:
0
Offset
05:
P86
Do
01:
51
Set low Port 1
*
Proper entries will vary with input location
assignment.
**
For degrees Fahrenheit use a multiplier
of 0.18.
5. MAINTENANCE AND CALIBRATION
The CS500 probe requires minimal
maintenance. Check monthly to make sure the
radiation shield is free from debris. The white
screen on the sensor’s end should also be
cleared of dust and debris.
When installed in close proximity to the ocean
or other bodies of salt water (e.g., Great Salt
Lake), a coating of salt (mostly NaCl) may build
up on the radiation shield, sensor, filter and
even the chip. NaCl has an affinity for water.
The humidity over a saturated NaCl solution is
75%. A buildup of salt on the filter or chip will
delay or destroy the response to atmospheric
humidity.
The filter can be rinsed gently in distilled water.
If necessary, the chip can be removed and
rinsed as well. Do not scratch the chip while
cleaning or drying. To speed up the drying
process you may lay the chip on a clean paper
towel so it will absorb the water away.
Replace the humidity chip every two years.
Contact Campbell Scientific, Inc. at
(801) 753-2342 for replacements.
