Discussion
:Temperature errors can occur when a sensor is placed too close to a
heat
source
(such
as
a
building
structure,
the
ground
or
trees).
To calibrate temperature, we recommend a mercury or red spirit (fluid) thermometer. Bi-
metal (dial) and other digital thermometers are not a good source and have their own
margin of error. Using a local weather station in your area is also a poor source due to
changes in location, timing (airport weather stations are only updated once per hour) and
possible calibration errors (many official weather stations are not properly installed and
calibrated).
Place the sensor in a shaded, controlled environment next to the fluid thermometer, and
allow the sensor to stabilize for 48 hours. Compare this temperature to the fluid
thermometer and adjust the console to match the fluid thermometer.
4.3 Sensor Operation Verification
Verify the humidity match closely with the console and sensor array in the same location
(about 5 to
10’ apart). The sensors should be within 10% (the accuracy is ± 5%). Allow
about 30 minutes for both sensors to stabilize.
Verify the temperature match closely with the console and sensor array in the same
location (about 1.5m to 3m apart). The sensors should be within 2°C(the accuracy is ±
1°C). Allow about 30 minutes for both sensors to stabilize.
4.4. Indoor Sensor Installation
Indoor use only.
It is recommended you mount the Indoor sensor on a north
facing wall, in a shaded area. Direct sunlight and radiant heat sources will result
in inaccurate temperature readings. Use a screw or nail (not included) to affix the
indoor sensor to the wall, as shown in Figure 4.
Figure 4
Or put it on the table. Place the console at least three feet away from computers, TVs
and wireless phones. Avoid transmitting through solid metal barriers. as shown in Figure
5.
