Omega HHF144, Руководство пользователя, Страница: 10 / 26

SECTION 3 - OPERATIONAL NOTES
9009 -
Out of Range Error: If the Temp-RH probe is exposed to
temperatures or humidity levels outside of its range (see Section 1 -
Specifications), the instrument will display
9009
when the instrument is
displaying either temperature or relative humidity. This is the out-of-range
error. This error will also be displayed if the instrument is turned on without the
Temp-RH probe attached and the reading is set to either temperature or relative
humidity.
The humidity sensor will not read correctly if it is exposed to condensation. If
the Temp-RH probe is stored in a cold environment and is then exposed to a
warm, humid environment while the probe is still cold, condensation will form
on the humidity sensor. The humidity reading is invalid until the condensation
has evaporated completely.
Both the humidity and temperature sensors will have a faster response time if
they are exposed to a moving air stream. This is because forced convection will
cool or heat the sensors faster than free convection.
Rev 1.8, 10-Jun-2008
Page 9 of24