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The preference set order is as follows:
OUTDOOR TEMPERATURE
OUTDOOR HUMIDITY
INDOOR TEMPERATURE
INDOOR HUMIDITY
BAROMETRIC PRESSURE (must be set to MANUAL mode to calibrate)*
*To change from AUTO to MANUAL pressure mode and vice versa, press
AND HOLD the " SET " button for at least 10 seconds. The display indicates
the current pressure mode selected,"AUTO" or "MANUAL".
After 20 seconds of inactivity, the display will save the adjustments and exit
calibration mode. Note: Calibrations will be erased if the display is reset or if
batteries are removed and the power adapter is unplugged.
Calibrate the Rain Gauge
The rain gauge on the 5-in-1 sensor can be calibrated to improve accuracy.
Items Needed: 5-in-1 sensor, display, plastic cup, pin, screw driver
1. First, ensure 5-in-1 sensor is perfectly level using built-in bubble level.
2. Place display close so you can monitor it during calibration.
3. Make a pin hole in the bottom of a plastic cup. Hold the cup over the rain
gauge and fill it with exactly 1 cup (8oz) of water, allowing the water to
drip into the rain gauge. You should hear the internal buckets tip and see
water drain through the rain gauge.
4. A few seconds after each bucket tip, the display unit displays rainfall in
approximately 0.01" or more increments.
5. The cup of water should take more than 20 minutes to empty; a quicker
period will result in inaccurate calibration. Try to simulate a normal steady
rainfall. When cup is empty of water, display unit should register 1.06".
Tips
• There should be nearly an equal number of water drops (about 25 water
drops) between bucket tips. If not, adjust the calibration screws on the
bottom of the 5-in-1 sensor until an equal number of water drops are
tipping the buckets. Then, restart the calibration procedure.
• If you don't hear the buckets tipping and see water dripping alternately out
of each drain, there may be an issue with the rain gauge or it's adjustment.
See Troubleshooting on page 15.
Adjustment
If the rain gauge doesn't register close to 1.06", make an EQUAL adjustment
to the two calibration screws on the bottom of the 5-in-1 sensor. Turning screws
clockwise increases rainfall; counter clockwise decreases rainfall.
17
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