KANOMAX 6501 series Climomaster - Manual (Page 15)

14 Getting Started
Precautions for Measurements
Air Velocity
● MODEL6531/6541/6561: The probe has its own
directivity characteristics. Make sure that the
direction mark is facing into the airflow. If you
are not sure of the airflow direction, slowly rotate
the probe and select the point where you get the
maximum velocity reading.
● MODEL6533/6542/6543/6551/6552: This omnidirectional
probe has a horizontal, 360 degree dynamic characteristic
(Refer to “Directivity of the Probe” on P.57 for details).
● The probe relies on both an air velocity sensor and temperature
compensation sensor to accurately measure air velocity. In order
to do so, it is necessary that both sensors are evenly exposed to the
airflow under the same temperature conditions (Refer to the figures
of the probes on P.9 for the location of the sensors).
● For measurements in an environment with rapid air temperature
changes, measure for at least 20 seconds and wait for the reading to
stabilize before starting the actual measurement (i.e. the data will
not be accurate until the probe has time to acclimate to the
environment.)
Air Temperature
● The faster the wind, the shorter the response time for temperature
measurements. The normal response time is approximately 30
seconds when the air velocity is 1 m/s (90% response). Wait for the
reading to become stable before taking a measurement.
● When no airflow is present, the air temperature reading may be
higher than the actual temperature due to the heat generated by the
air velocity sensor. It is recommended that you SLOWLY wave the
probe to create an environment with approx. 0.1m/s airflow to
obtain accurate temperature readings.
Humidity
● Humidity readings in an atmosphere with extremely high humidity
or rapid temperature changes may be higher than the actual
humidity due to condensation generated on the surface of the sensor.
If this occurs, allow the probe to dry in an atmosphere with 40%RH
humidity or less for 24 hours.
―― Comparing with ASSMANN Psychrometer ――
The humidity measurement function of CLIMOMASTER is strictly
calibrated, traceable to Japanese National Standards carried by JEMIC
(Japan Electric Meters Inspection Corporation), and it assures you highly
accurate performance.
The electronic hygrometer, used in CLIMOMASTER, is known to be more
stable and has a shorter response time compared to conventional
ASSMAN Psychrometers. Also, the electronic hygrometer is not dependent
upon the measurement conditions, while an ASSMANN Psychrometer can
easily be influenced by many factors such as dust, condensation and the
way the gauze is wrapped.
Direction Mark
Airflow
* For more
information on proper
handling of the
ASSMAN
Psychrometer, please
refer to Japanese
Industrial Standard
(JIS-Z8806 “Method
of measuring
Humidity), or its
counterpart standards
that apply.