UltraRAE 3000 User’s Guide
5.
Cover the cup with your hand.
25° C / 77° F
6.
Wait a few seconds and check the high-humidity reading.
7.
The humidity reading should be within ±10% of the 100%
humidity reading. If it is not, then the THP Sensor (part number
023-3011-000-FRU) should be replaced.
8.
Check the low-humidity reading by connecting the inlet probe to
a tank of zero gas (air at 0% humidity).
9.
Turn on the zero gas and wait a few seconds for the sensor
reading to stabilize. It should read within 10% of the low-
reference number. If it does not, replace the T.H.P. sensor.
10.
Once you have finished testing the humidity sensor, exit
Diagnostic Mode by shutting down the UltraRAE 3000 (hold
[MODE] through the countdown, and then release when it is off).
25.4.6 Exiting Diagnostic Mode
You can exit Diagnostic Mode and go directly to Programming Mode
or Monitor Mode as outlined above, or you can exit Diagnostic Mode
completely.
To exit Diagnostic Mode so that it cannot be re-entered without a
restart:
100
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