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Table 1 – Relative Humidity Vs Temperature of Standard Solutions
Temp
o
C
Lithium
Chloride
LiCl (
Y
)
Sodium
Chloride
NaCl (
Z
)
0
11.2
75.5
5
11.3
75.7
10
11.3
75.7
15
11.3
75.6
20
11.3
75.5
25
11.3
75.3
30
11.3
75.1
35
11.3
74.9
40
11.2
74.7
45
11.2
74.5
50
11.1
74.4
8. Troubleshooting
Symptom
Possible Causes
Remedy
Unstable readings
1. Battery is low
2. Requires re-calibration
3. Sensor is faulty.
Replace battery.
Re-calibrate meter.
Return to factory for repair.
Display shows just
” – – – – “
1. Meter has over-
ranged.
2. Instrument or sensor is
faulty.
Check that the R.H. or
temperature are within the
specified ranges (section 1.3)
Return to factory for repair.
Meter will not turn on.
Battery is exhausted.
Replace the battery.
Reading does not
change. Fixed at one
value.
Data Hold function is
selected.
Press “
HOLD
” again to unfreeze
display.