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Version 1.0 ©Copyright 2010, Ambient LLC. All Rights Reserved. Page 5
4.3 Multi-Channel Operation
The WS-0100 supports up to three WH-2C remote thermo-hygrometers (one is included). The
optional sensors can be purchased at AmbientWeather.com.
4.3.1 Sensor Initialization
Power up the sensors and console in the following order:
1. Power up the console. Do not touch any of the buttons, as described in Section 2.4.
2. Power up the first remote thermo-hygrometer as described in Section 2.5. Wait until the
sensor reports into the console.
3. Power up the second remote thermo-hygrometer as described in Section 2.5. Wait until the
sensor reports to the console. The first sensor will be designated as Channel 1 and the second
sensor will be designated as Channel 2.
4. Power up the third remote thermo-hygrometer as described in Section 2.5. Wait until the
sensor reports to the console. The third sensor will be designated as Channel 3. The display
will switch between each sensor until you exit the initialization state by pressing any button.
4.3.2 Sensor Accuracy Note
Verify the temperature values match closely with the console and sensor array in the same location
(about 10’ apart). The sensors should be within 4°F (the accuracy is ± 2°F).
Humidity is a particularly difficult parameter to measure. Verify the humidity values match closely
with the sensor array in the same location (about 10’ apart). The sensors should be within 10%
humidity (the accuracy is ± 5%).
Allow about 30 minutes for both sensors to stabilize.
4.3.3 Viewing the 3 Sensor Channels
To view the 3 sensor channels, select the CH/+ button. The minimum and maximum can be viewed
for each channel as specified in Section 4.2.
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