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5.3.2 Humidity Calibration at 75% Humidity
CASE 1
The 75% reading is too low by
n
counts, so DECREASE the humidity
code by n counts.
EXAMPLE 1
: you obtain a reading of 72%. The error is -3 since 72 is 3 counts lower than
75%. The initial humidity code of 67 (from Case 1: Example 1 in previous section) must
be reduced to 64 (–3 counts).
READING
INITIAL
ERROR
CHANGED (NEW) HUMIDITY
IN 75%
HUMIDITY
CODE IN 75% “HUMID”
ENVIRONMENT
CODE
ENVIRONMENT
72
6
7
*
-3
6
4
*
* the second digit is flashing and changes in this case.
CASE 2
The 75% reading is too high by
n
counts, so INCREASE the humidity
code by n counts.
EXAMPLE 2
: you obtain a reading of 76%. The error is +1 since 76 is 1 count higher
than 75%. The initial humidity code of A5 (from Case 2: Example 2 in previous section)
must be increased to A6 (+1 counts).
READING
INITIAL
ERROR
CHANGED (NEW) HUMIDITY
IN 75%
HUMIDITY
CODE IN 75% “HUMID”
ENVIRONMENT
CODE
ENVIRONMENT
76
A
5
*
+1
A
6
*
* the second digit is flashing and changes in this case.
Changing the second digit (following Section 5.2 ) does not affect readings at 33% and
lower. Check to see that the reading is 75. If it is not, adjust the second digit of the code
again.
You must continue to Section 5.4 to finish the calibration process.
Calibrating the Recorder
5
5-7
Summary of Contents for CT485B-110V-G-AL
Page 23: ...Setting Up the Recorder 2 2 14 Notes...
Page 27: ...Powering Up the Recorder 3 3 4 Notes...
Page 33: ...Alarm Operation 4 4 6 Notes...
Page 43: ...Using the Cal Lock Kit 6 6 2 Notes...
Page 45: ...Using the Voltage Input Adapter Optional 7 7 2 Notes...
Page 49: ...8 4 Notes Maintaining the Recorder 8...
Page 57: ...Specifications 11 11 4 Notes Notes...
Page 59: ...CE Approval 12 Notes 12 2...