Version 1.0
©Copyright 2015, Ambient LLC. All Rights Reserved.
Page 10
Press and hold the
ADJUST and CHANNEL
buttons at the same time for 5 seconds again, and the
outdoor humidity value will begin flashing. Press the
C
button to increase the humidity
and the
MIN/MAX/-
button to decrease the humidity reading in 1% increments. To rapidly increase
(or decrease) the humidity reading, press and hold the
C
or
MIN/MAX/-
button.
To return the humidity to the actual or uncalibrated measurement, press the
ADJUST
button.
Once the displayed temperature or humidity equals the calibrated source, press and hold the
ADJUST
button for three seconds, or wait 15 seconds for timeout, and the outdoor temperature or humidity
value will stop flashing.
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.
5
Glossary of Terms
Term
Definition
Accuracy
Accuracy is defined as the ability of a measurement to match the actual
value of the quantity being measured.
Hygrometer
A hygrometer is a device that measures relative humidity. Relative
humidity is a term used to describe the amount or percentage of water
vapor that exists in air.
Range
Range is defined as the amount or extent a value can be measured.
6
Specifications
6.1
Wireless Specifications
Line of sight wireless transmission (in open air): 300 feet, 100 feet under most conditions.
Frequency: 433 MHz
Update Rate: 60 seconds
