ECOWITT WS90 User manual

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Ultrasonic Anemometer
withPiezoelectric Rain Gauge, Light &
UV, Thermo-hygrometer Sensors
Model: WS90
Contents
1. Warnings and Cautions ................................................ 3
1.1 Optional other accessories (sold separately) ......... 3
1.2 Features .................................................................. 4
2. Overview ......................................................................5
3. Setup Guide ..................................................................6
3.1 Install batteries in sensor package ......................... 6
3.2 Mount ultrasonic anemometer with piezoelectric
assembly .......................................................................8
3.2.1 Before you mount ........................................... 8
3.2.2 Mounting .........................................................9
3.2.3 Reset Button and Transmitter LED .............. 12
4. Specification .............................................................. 12
4.1 Transmission between gateway and sensor ......... 12
4.2 Measurement Specification ................................. 13
4.3 Power consumption ............................................. 14
5. Warranty Information ................................................ 14

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ware
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Help
Our product is continuously changing and improving, particularly
online services and associated applications. To download the latest
manual and additional help, please contact our technical support
team:
[e-mail]
[e-mail] (EU/UK)

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1. Warnings and Cautions
Note:
1. The last firmware in QR code on the box
2. Advance setting on Embeded Web page 192.168.4.1
(You need a computer or phone linking WLAN gateway)
1.1 Optional other accessories (sold
separately)
Accessories: 12V/1A power extension cord; Bird spikes
Note: Batteries for the sensor package are not
included. You will need 2 AA size battery for
the ultrasonic anemometer, which is primarily
for startup and backup power purpose. After
setup and during normal operation, the unit is
getting its power from solar cell.
Note: There’s a built-in heat plate in the 7-in-1
sensor package body, if the lowesttemperature
at your place is below -3°C, or 26.6°F, and the
weather ismostly snowy or rainy, then you
may need to activate the heater bysupplying
an external 12V/1A power to the sensor
heating element formelting accumulated snow
or ice, which can influence wind

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measurementaccuracysignificantly. Please
contact us at [email protected] for
theextension cord information if needed.
1.2 Features
•Piezoelectric rain gauge;
•Ultrasonic anemometer (start wind speed 0.3m/s);
•Temperature;
•Humidity;
•Solar light intensity and UV index;
•Waterproof IPX5;
•Heater and additional power supply;
Note: There’s a built-in thermostat inside the
anemometer sensorto control the power supply for the
heat plate, which will automatically turnon below 0℃
(30℉ ) and automatically turn off above 10℃ (50℉ ).

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2. Overview
Figure 1: Sensor package assembly components

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No
Description
No
Description
1
Piezoelectric rain sensor
array
7
Battery compartment
2
Light& UV sensor, LED
indicator
8
Temperature & humidity
sensor
3
USB port (factory use
only )
9
fixed bolt
4
Solar Panel
10
Heating power cable
connector
5
Ultrasonic wind speed
sensor
11
Calibration button
(factory use only )
6
NORTH alignment
indicator
12
Reset button
Table 1: Sensor package assembly component list
3. Setup Guide
3.1 Install batteries in sensor package
Open the battery compartment with a screwdriver and
insert 2 AA batteries in the battery compartment, and
press “Reset” button, the LED indicator on the back of
the sensor package (item 4) will turn on for 3 seconds
and then flash once every 8.8 seconds indicating sensor
data transmission. If you did not pay attention, you may
have missed the initial indication. You can always press
the reset button to start over. Make sure you see the flash
once every 8.8 seconds.

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If sensor has been put outside for some time, and solar
panel has charged up the internal accumulator fully or
partially, if you install the 2 AA backup battery, the
system might not start up properly. So you can always
make a system reset by press the “Reset” button.
Figure 2: Battery installation diagram
Note: Please make sure the battery is inserted
correctly for its polarity as the system needs
its initial power from this backup battery to
start up the system before solar panel charges

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up the accumulator and supply system power
afterwards. when in high altitude area,during
wintertime, sunshine time is short, thus
system needs to be powered from this backup
battery, we recommend Lithium batteries to
be used for cold weather climates. Please
avoid alkaline batteries, especially when
internal heater is to be activated during cold
and wet weather conditions as when heater
activated, the trapped heat inside will warm
up internally, and alkaline batteries are
extremely susceptible to leakage when
temperature is over certain limits.
3.2 Mount ultrasonic anemometer with
piezoelectric assembly
3.2.1 Before you mount
Before installing your outdoor sensor in the permanent
location, we recommend operating the device for one
week in a temporary location with easy access. This will
allow you to check out all of the functions, ensure proper
operation and familiarize you with the device
performance.

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3.2.2 Mounting
You can attach a pole (not included) to a permanent
structure and then attach the sensor package to it (see
Figure 3).
The install hole will accommodate a pole diameter of 1.0
inch (pole not included).
Figure 3: Sensor package mounting diagram 6-1

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Make sure the mounting pole is vertical, or very close to
it. Use a level as needed.
1. If optional extension cord is added, connect the
cord to the connector and insert the USB port into
the AC adaptor as Figure 4 show:
Figure 4: Sensor package mounting diagram 6-2

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Now you will need to align the whole package in the
proper direction by rotating it on top of the mounting
pipe as needed. Locate the arrow labeled “NORTH” that
you will find on top of the connector tubeof the sensor
package (item 6). You must rotate the whole sensor
package until this arrow points due north. To achieve
proper alignment, it is helpful to use a compass (many
cell phones have a compass application).
Note: In Southern hemisphere, it is not necessary to
change the orientation to SOUTH as its solar
panel is a rounded type and it is orientation free
for its charging capability.
Make sure the mounting tube for the sensor package is
installed vertically (use a level at 90-degree offsets
around the tube). Adjust the mounting pipe as necessary.
Next also make sure the mounting of the anemometer
body on the pipe is level. If it is not, wind direction and
speed readings may not operate correctly or accurately.
Adjust the mounting assembly as necessary.
Make sure you check, and correct if necessary, the north
orientation again, as the final installation step, and now
tighten the bolts. Do not over tighten, but make sure
strong wind and/or rain cannot move the sensor package.

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3.2.3 Reset Button and Transmitter LED
In the event the sensor package is not transmitting, reset
the sensor.
Using a bent-open paperclip, press and hold the RESET
BUTTON (item 12) to affect a reset: the LED turns on
while the RESET button is depressed, and you can now
let go. The LED should then resume as normal, flashing
approximately once every 8.8 seconds.
4. Specification
4.1 Transmission between gateway and
sensor
Transmission distance in open field: 150 m (500 ft.)
depend on environment
RF frequency: 433/868/915/920 MHz depending on
location
Sensor reporting interval: 8.8 seconds
Note:
•The wind speed is detected by every 2s.
•The wind speed reading will be a real-time value (The
latest sampling data will be reporting to the receiver).

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•The wind gust reading will be the max wind speed in
the past 28s.
•When the wind speed is lower than 5m/s,the dispersion
of wind direction will increase.
4.2 Measurement Specification
Measurement
Range
Accuracy
Resolution
Wind speed
0m/s to
40m/s
<10m/s, ±
0.5m/s; ≥
10m/s, ±5%
0.1m/s
Wind
direction
0°to
359°
<2m/s, ±
10°;≥2m/s,
±7°
1°
Temperature
-40°C
to 60°C
±0.3°C (±
0.6°F)
0.1°C (±
0.2°F)
Humidity
1 to 99%
±3.5%
1%
Light
0 to
200Klux
±15%
0.1Klux
UVI
1 to 15
±2
1
Rain
0 to 9999
TBA
0.1mm

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4.3 Power consumption
Power
Specification
Anemometer sensor
Solar panel (built-in): 6.5V/4mA
Anemometer sensor
(backup)
2 x AA 1.5V battery (not
included)
Note: The primary power source for the sensor is the
solar panel. When available solar power (light over
recent period) is insufficient, the batteries will be used.
5. Warranty Information
We disclaim any responsibility for any technical
error or printing error, or the consequences thereof.
All trademarks and patents are recognized.
We provide a 1-year limited warranty on this product
against manufacturing defects, or defects in materials
and workmanship.
This limited warranty begins on the original date of
purchase, is valid only on products purchased, and only
to the original purchaser of this product. To receive
warranty service, the purchaser must contact us for
problem determination and service procedures.
This limited warranty covers only actual defects within
the product itself and does not cover the cost of

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installation or removal from a fixed installation, normal
set-up or adjustments, or claims based on
misrepresentation by the seller,or performance variations
resulting from installation-related circumstances.