Ambient Weather WS-1900A User manual

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Ambient Weather WS-1900A OSPREY Solar Powered Wireless
Weather Station User Manual
Table of Contents
1. Introduction............................................................................................................................................................ 2
2. Warnings and Cautions.......................................................................................................................................... 2
3. Quick Start Guide.................................................................................................................................................. 3
4. Pre-Installation Checkout and Site Survey............................................................................................................ 3
4.1 Pre Installation Checkout.............................................................................................................................. 3
4.2 Site Survey.................................................................................................................................................... 3
5. Getting Started....................................................................................................................................................... 3
5.1 Parts List ....................................................................................................................................................... 4
5.2 Recommend Tools......................................................................................................................................... 4
5.3 SensorArray Set Up...................................................................................................................................... 5
5.3.1 Install Wind Vane...................................................................................................................................... 5
5.3.2 Install Wind Cups...................................................................................................................................... 6
5.3.3 Install U-Bolts........................................................................................................................................... 6
5.3.4 Install the Rain Gauge Funnel................................................................................................................... 7
5.3.5 Install the Funnel Coil Filter..................................................................................................................... 7
5.3.6 Install Batteries ......................................................................................................................................... 8
5.3.7 Install Mounting Pole................................................................................................................................ 8
5.4 Best Practices for Wireless Communication................................................................................................. 9
5.5 Display Console............................................................................................................................................ 9
5.5.1 Vertical Desk Stand..................................................................................................................................11
6. Display Console Operation.................................................................................................................................. 12
6.1 Screen Display ............................................................................................................................................ 12
6.2 Console Initialization.................................................................................................................................. 12
6.2.1 Button Operation..................................................................................................................................... 13
6.3 Set Mode..................................................................................................................................................... 14
6.4 Barometric Pressure Display....................................................................................................................... 16
6.4.1 ViewingAbsolute vs. Relative Pressure.................................................................................................. 16
6.4.2 Rate of Change of Pressure Graph.......................................................................................................... 16
6.4.3 Viewing Pressure History........................................................................................................................ 17
6.4.4 Relative Pressure Calibration Discussion............................................................................................... 17
6.5 Rain Display................................................................................................................................................ 17
6.5.1 Rain Increments of Measure................................................................................................................... 17
6.5.2 Resetting Rain......................................................................................................................................... 17
6.5.3 Increments of Rain Definitions............................................................................................................... 18
6.6 Wind Display .............................................................................................................................................. 18
6.7 Temperature Display................................................................................................................................... 18
6.7.1 Wind Chill, Dew Point and Heat Index Display..................................................................................... 18
6.8 Alarms......................................................................................................................................................... 18
6.8.1 Viewing High and Low Alarms .............................................................................................................. 18
6.8.2 Setting High and Low Alarms................................................................................................................. 19
6.9 Max/Min Mode........................................................................................................................................... 22
6.9.1 Viewing Max/Min Values ....................................................................................................................... 22
6.10 Calibration................................................................................................................................................... 23
6.10.1 Calibration Settings ............................................................................................................................ 23
6.10.2 Calibration Ranges.............................................................................................................................. 24
6.10.3 Calibration Discussion........................................................................................................................ 24
6.11 Restoring the Console to Factory Default................................................................................................... 26
6.12 Resynchronize Wireless Sensor .................................................................................................................. 26
6.13 Backlight Operation.................................................................................................................................... 26

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6.13.1 With AC Adapter................................................................................................................................. 26
6.13.2 Without AC Adapter ........................................................................................................................... 26
6.14 TendencyArrows ........................................................................................................................................ 26
6.15 Wireless Signal Strength Indicator.............................................................................................................. 27
6.16 Weather Forecasting.................................................................................................................................... 27
6.16.1 Storm Alert.......................................................................................................................................... 27
6.16.2 Weather Forecasting Description and Limitations.............................................................................. 27
7. Glossary of Terms................................................................................................................................................ 28
8. Specifications....................................................................................................................................................... 29
8.1 Wireless Specifications............................................................................................................................... 29
8.2 Measurement Specifications ....................................................................................................................... 30
8.3 Power Consumption.................................................................................................................................... 30
9. Maintenance......................................................................................................................................................... 30
10. Troubleshooting Guide.................................................................................................................................... 31
11. Accessories...................................................................................................................................................... 32
12. Liability Disclaimer......................................................................................................................................... 32
13. FCC Statement................................................................................................................................................ 32
14. Warranty Information...................................................................................................................................... 33
15. California Prop 65........................................................................................................................................... 33
1. Introduction
Thank you for your purchase of the Ambient Weather WS-1900A OSPREY Solar Powered Wireless Weather Station.
The following user guide provides step by step instructions for installation, operation and troubleshooting. To
download the latest manual and additional troubleshooting tips, please visit:
https://help.ambientweather.net/product/ws-1900a
2. Warnings and Cautions
Warning: Any metal object may attract a lightning strike, including your weather station mounting pole.
Never install the weather station in a storm.
Warning: If you are mounting the weather station to a house or structure, consult a licensed electrician for

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proper grounding.A direct lightning strike to a metal pole can damage or destroy your home.
Warning: Installing your weather station in a high location may result in injury or death. Perform as much of
the initial check out and operation on the ground and inside a building or home. Only install the weather station on a
clear, dry, day.
3. Quick Start Guide
Although the manual is comprehensive, much of the information contained may be intuitive. In addition, the manual
does not flow properly because the sections are organized by components.
The following Quick Start Guide provides the necessary steps to install and operate the weather station, along with
references to the pertinent sections.
Required
Step
Description
Section
1
Assemble and power up the sensor array
5.3
2
Power up the display console and synchronize with sensor array
5.5
3
Mount the sensor array
5.3.7
4
Set date and time on console
6.3
5
Calibrate the relative pressure to sea-level conditions (local airport) on console
6.3
6
Reset the rain to zero on console
6.5.2
4. Pre-Installation Checkout and Site Survey
4.1 Pre Installation Checkout
Before installing your weather station in the permanent location, we recommend operating the weather station for
one week in a temporary location with easy access. This will allow you to check out all of the functions, insure
proper operation and familiarize you with the weather station and calibration procedures.
4.2 Site Survey
Perform a site survey before installing the weather station. Consider the following:
1. You must clean the rain gauge every few months and change the batteries every 2-3 years. Provide easy
access to the weather station.
2. Avoid radiant heat transfer from buildings and structures. In general, install the sensor array at least 5’ from
any building, structure, ground, or roof top.
3. Avoid wind and rain obstructions. The rule of thumb is to install the sensor array at least four times the
distance of the height of the tallest obstruction. For example, if the building is 20’ tall and the mounting pole
is 6’ tall, install the sensor array 4 x (20 –6)’ = 56’ away.
4. Mount the sensor array in direct sunlight for accurate temperature readings.
5. Installing the weather station over sprinkler systems or other unnatural vegetation may affect temperature
and humidity readings. We suggest mounting the sensor array over natural vegetation.
6. Wireless Range. Radio communication between receiver and transmitter in an open field can reach a
distance of up to 330 feet, providing there are no interfering obstacles such as buildings, trees, vehicles and
high voltage lines. Wireless signals will not penetrate metal buildings. Under most conditions, the
maximum wireless range is 100’.
7. Radio Interference. Computers, radios, televisions and other sources can interfere with radio
communications between the sensor array and console. Please take this into consideration when choosing
console or mounting locations. Make sure your display console is at least five feet away from any electronic
device to avoid interference.
8. Visit Ambient Weather Mounting Solutions for assistance and ideas for mounting your weather station:
http://www.ambientweather.com/amwemoso.html
5. Getting Started
The Ambient Weather WS-1900A OSPREY Personal Weather Station consists of an indoor display console and an

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all-in-one outdoor weather sensor array.
5.1 Parts List
QTY
Item
1
Display Console
Frame Dimensions (LxWxH): 7.50 x 4.50 x 0.75”
LCD Dimensions (LxW): 3.00 x 6.75”
1
Vertical Desk Stand
1
SensorArray
1
Wind Vane
1
5V DC Adaptor
2
Pole mounting U-bolts
2
Pole mounting U-bolt nuts
1
User manual
5.2 Recommend Tools
•Precision screwdriver (for small Phillips screw on wind vane and wind cups)
•Adjustable wrench (for mounting pole)
•Compass or GPS (for wind direction calibration)

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5.3 SensorArray Set Up
(a)
(b)
Figure 1
No
Description
No
Description
1
Wind Vane (measures wind direction)
7
Solar panel
2
Wind Speed Sensor (measures wind speed)
8
U-Bolt
3
UV sensor/ Light sensor
9
Battery compartment
4
Thermometer-hygrometer sensor (measures temperature and humidity)
10
Reset button
5
Rain collector
11
LED transmitter Indicator
6
Bubble level
5.3.1 Install Wind Vane
Reference Figure 2. (a) Locate and align the flat key on the wind vane shaft to the flat key on the wind vane and push
the vane on to the shaft. (b) tighten the set screw with a precision screw driver and make sure the wind vane spins
freely.
Note: You may need to back out the set screw first before sliding the vane onto the shaft.
Note: The wind vane shaft does not spin as freely as the wind cups. This is by design. The dampening prevents
the wind vane from spinning with the slightest breeze, which will result in variable wind all of the time. The added
resistance allows the wind vane to change direction with 2 –3 mph, providing a much better wind direction tracking.
(a)
(b)
Figure 2

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5.3.2 Install Wind Cups
Reference Figure 3. (a) push the wind cups on to the shaft. (b) tighten the set screw with a precision screw driver and
make sure the wind cups spin freely.
Note: You may need to back out the set screw first before sliding the cups onto the shaft.
(a)
(b)
Figure 3
5.3.3 Install U-Bolts
Note: Your U-bolts may have come preassembled at the factory.
(a) Insert the U-Bolts into the sensor array mounting bracket and hand tighten the nuts.
(b) Tighten the nuts to fit the size of your mounting pole (between 1” and 2” diameter
(c) Insert the sensor array and U-Bolt assembly onto the mounting pole.
(d) Tighten the U-Bolts around the pole with an adjustable wrench. Make sure the sensor array is level.
(a)
(b)

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(c)
(d)
Figure 4
5.3.4 Install the Rain Gauge Funnel
Reference Figure 5. Install the rain gauge funnel. Rotate clockwise to attach the funnel to the sensor array.
Figure 5
5.3.5 Install the Funnel Coil Filter
To install the funnel coil filter, press the coil until the hook is inside the hole at the bottom of the funnel, and locked
in place. The spring tension will keep the filter sit tight on the funnel.

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5.3.6 Install Batteries
Reference Figure 6. Insert 2 x AA non-rechargeable batteries (not included) into the battery compartment. The
LED indicator on the back of the transmitter will turn on for four seconds, and then flash once every 16 seconds (the
sensor transmission update period).
(a)
(b)
Figure 6
Note: If the LED does not light up, or stays on permanently, make sure the battery polarity is correct, or the
batteries are fresh. Do not install the batteries backwards. You can permanently damage the thermo-hygrometer.
Note: We recommend lithium batteries for cold weather climates, but alkaline batteries are sufficient for most
climates. We do not recommend rechargeable batteries. They have lower voltages, do not operate well at wide
temperature ranges, and do not last as long, resulting in poorer reception.
5.3.7 Install Mounting Pole
Reference Figure 7. The mounting assembly includes two U-Bolts and a bracket that tightens around a 1 to 2”
diameter pole (not included) using the four U-Bolt nuts.
(a)
(b)
Figure 7
Use the bubble level next to the rain sensor to make sure the sensor array is completely level. If the sensor array is
not level, the rain gauge, UV and solar radiation sensors will not measure properly.

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Note: If you cannot read the bubble level due to mounting constraints, place straddle a line or ruler level
across the top of the rain gauge for easier viewing.
5.3.7.1 Aligning the Wind Direction
Locate the four wind vane compass rose indicators of N, E, S, W (representing North, East, South and West) at the
base of the wind vane.Align the compass rose direction upon final installation with a compass or GPS.
5.4 Best Practices for Wireless Communication
Wireless communication is susceptible to interference, distance, walls and metal barriers. We recommend the
following best practices for trouble free wireless communication.
1. Electro-Magnetic Interference (EMI). Keep the console several feet away from computer monitors and
TVs.
2. Radio Frequency Interference (RFI). If you have other 915 MHz devices and communication is
intermittent, try turning off these other devices for troubleshooting purposes. You may need to relocate the
transmitters or receivers to avoid intermittent communication.
3. Line of Sight Rating. This device is rated at 300 feet line of sight (no interference, barriers or walls) but
typically you will get 100 feet maximum under most real-world installations, which include passing through
barriers or walls.
4. Metal Barriers. Radio frequency will not pass through metal barriers such as aluminum siding. If you have
metal siding, align the remote and console through a window to get a clear line of sight.
The following is a table of reception loss vs. the transmission medium. Each “wall” or obstruction decreases the
transmission range by the factor shown below.
Medium
RF Signal Strength Reduction
Glass (untreated)
5-15%
Plastics
10-15%
Wood
10-40%
Brick
10-40%
Concrete
40-80%
Metal
90-100%
5.5 Display Console
The front and back of the display console is shown in Figure 8 and Figure 9.
Figure 8

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Figure 9
Reference Figure 9.
(1) Connect the display console power jack toAC power adapter with the included power adapter.
(2) Unfold the desk stand and place 5 to 10 feet away from the sensor array.
Remove the battery door on the back of the console, and insert 3xAAAbatteries per Figure 10.
(3) Wait several minutes for the remote sensors to synchronize with the display console.
Figure 10

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5.5.1 Vertical Desk Stand
The console is best viewed above from a 20 to 30 degree angle.
In addition to the fold out desk stand on the back of the display, console, the console also includes a vertical desk
stand to improve the viewing able on a desk, as shown in Figure 11.
Figure 11

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6. Display Console Operation
6.1 Screen Display
The display console home screen layout is shown in Figure 12.
Figure 12
No
Description
No
Description
1
Wind speed
9
Barometric Pressure
2
Wind direction
10
Moon phase
3
Rainfall
11
Date
4
Indoor temperature
12
Time
5
Indoor humidity
13
DST
6
UV index
14
RF icon
7
Solar Radiation
15
Outdoor humidity
8
Weather forecast
16
Outdoor temperature
6.2 Console Initialization
After the console is connected to AC power, the console will display the software version number two seconds after
power up.
Figure 13
The console will display all of the LCD segments for three seconds after power up as shown in Figure 14, the indoor

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conditions will immediately update, and the outdoor sensor array will register within a few minutes.
Figure 14
6.2.1 Button Operation
Figure 15
The console has 8 buttons at the bottom for easy operation:
Key
Description
SET
Press and hold to enter the SET mode.
TEMP
•Press to switch between Outdoor Temperature, Wind Chill, Heat Index, Dew Point.
•To bypass RF reception, press and hold while powering up the console (connecting the
AC adapter with batteries removed).
RAIN
Press to switch between Rain Rate (in/hr), Rain Event, Rain Day, Rain Week, Rain Month, and
Rain Total.
WIND +
•Press to switch between average wind speed, wind gust and wind direction.
•While in SET mode, press to increase the value. Press and hold for two seconds to
increase the value rapidly.
PRESSURE -
•Press to switch between Relative Pressure (current), and 12hr, 24hr, 48hr and 72hr
average Relative Pressure.
•While in SET mode, press to decrease the value. Press and hold for two seconds to

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decrease the value rapidly.
ALARM
Press to switch between high and low alarms
MAX/MIN
Press to switch between minimum and maximum values.
LIGHT/SNOOZE
•Press to adjust the LCD backlight brightness (high, medium and off).
•Press to exit the SET mode at any time.
6.3 Set Mode
Press and hold the SET button for two seconds to enter the SET Mode. To proceed to the next setting, press (do not
hold) the SET button.
To exit the SET mode at any time, press the LIGHT / SNOOZE button.
Figure 16 summarizes the set mode sequence and commands.

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Command
Mode
Settings
Image
[SET] + 2
seconds
Enter Set
Mode, Beep
On or Off
Press [WIND +] to switch OFF and ON.
This will prevent the beep from sounding when
pressing any button.
[SET]
Clear Max/Min
Press [WIND +] to switch OFF and ON.
When set to ON, the minimum and maximum
values reset every day at midnight (00:00).
When set to OFF, the minimum and maximum
values must be reset manually.
[SET]
Daylight
Savings Time
(DST)
Press [WIND +] to switch DST OFF and ON.
Set to ON (most locations) if you observe daylight
savings time, and the clock will automatically
adjust twice per year.
Set to OFF (Arizona and Hawaii) if you do not
observe DST.
[SET]
Time Zone
Not used with this model.
[SET]
12 hour / 24
Hour Format
Press [WIND +] to switch hour format between 12
hour and 24 hour format.
[SET]
Hour
Press [WIND +] or [PRESSURE -] to adjust hour
up or down.
[SET]
Minute
Press [WIND +] or [PRESSURE -] to adjust minute
up or down.
[SET]
Date Format
Press [WIND +] to switch between MM-DD
(month-day) and DD-MM (day-month)
[SET]
Year
Press [WIND +] or [PRESSURE -] to adjust year
up or down
[SET]
Month
Press [WIND +] or [PRESSURE -] to adjust month
up or down
[SET]
Day
Press [WIND +] or [PRESSURE -] to adjust day up
or down
[SET]
Pressure Units
of Measure
Press [WIND +] to change units of measure
between hpa, mmHg or inHg.
[SET]
Relative
Pressure
Calibration
Press [WIND +] or [PRESSURE -] to adjust
relative pressure up or down
Reference Section 6.4.4 for details on calibration of
relative pressure.
[SET]
Light Units of
Measure
Press [WIND +] to change light units of measure
between lux, fc, or w/m2

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[SET]
Temperature
Units of
Measure
Press [WIND +] to change temperature units of
measure between °F and °C.
[SET]
Wind Units of
Measure
Press [WIND +] to change wind units of measure
between km/h, mph, knots, m/s and bft.
[SET]
Rain Units of
Measure
Press [WIND +] to change rain units of measure
between in and mm.
[SET]
Hemisphere
Press [WIND +] to change hemisphere between
NTH (northern) and STH (southern). This setting
effects the moon phase display.
[SET]
Exit Set Mode
[SET] + 2 seconds means press and hold the SET button for two seconds.
[SET] means press the SET button. Figure 16
6.4 Barometric Pressure Display
6.4.1 Viewing Absolute vs. Relative Pressure
To switch between absolute and relative pressure, press and hold the [PRESSURE -] button for two seconds.
Absolute pressure is the measured atmospheric pressure, and is a function of altitude, and to a lesser extent, changes
in weather conditions.
Absolute pressure is not corrected to sea-level conditions.
Relative pressure is corrected to sea-level conditions. For further discussion of relative pressure and calibration,
reference Section 6.4.4.
6.4.2 Rate of Change of Pressure Graph
The rate of change of pressure graphic is shown to the left of the barometric pressure and signifies the difference
between the daily average pressure and the 30 day average (in hPa).

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Figure 17
6.4.3 Viewing Pressure History
Press the [PRESSURE -] button to view the 12 hour, 24 hour, 48 hour and 72 hour pressure average.
6.4.4 Relative Pressure Calibration Discussion
To compare pressure conditions from one location to another, meteorologists correct pressure to sea-level conditions.
Because the air pressure decreases as you rise in altitude, the sea-level corrected pressure (the pressure your location
would be at if located at sea-level) is generally higher than your measured pressure.
Thus, your absolute pressure may read 28.62 inHg (969 mb) at an altitude of 1000 feet (305 m), but the relative
pressure is 30.00 inHg (1016 mb).
The standard sea-level pressure is 29.92 inHg (1013 mb). This is the average sea-level pressure around the world.
Relative pressure measurements greater than 29.92 inHg (1013 mb) are considered high pressure and relative
pressure measurements less than 29.92 inHg are considered low pressure.
To determine the relative pressure for your location, locate an official reporting station near you (the internet is the
best source for real time barometer conditions, such as Weather.com or Wunderground.com), and set your weather
station to match the official reporting station.
6.5 Rain Display
6.5.1 Rain Increments of Measure
Press the RAIN button to switch between Rain Rate (in/hr), Rain Event, Rain Day, Rain Week, Rain Month, and
Rain Total.
6.5.2 Resetting Rain
Display the increment of rain you wish to clear, as shown in Section 6.5.1.
To reset the rain totals, press and hold the RAIN button for two seconds.
•Resetting the weekly rain also resets the daily rain.
•Resetting the monthly rain also resets the daily and weekly rain.
•Resetting the total rain also resets the monthly, weekly and daily rain.

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6.5.3 Increments of Rain Definitions
•Rain rate or hourly rain is defined as the last 10 minutes of rainfall, multiplied by six (10 minutes x 6 = 1
hour). This is also referred to as instantaneous rain per hour.
•Rain event is defined as continuous rain, and resets to zero if rainfall accumulation is less than 10 mm
(0.039 in) in a 24 hour period.
•Daily Rain is defined as the rainfall since midnight (00:00).
•Weekly Rain is defined as the calendar week total and resets on Sunday morning at midnight (Sunday thru
Saturday).
•Monthly Rain is defined as the calendar month total and resets on the first day of the Month.
•Total Rain is defined as the running total since station was powered up.
6.6 Wind Display
Press the [WIND +] button to switch between average wind speed, wind gust and wind direction.
•Wind speed is defined as the average wind speed in the 16 second update period.
•Wind gust is defined as the peak wind speed in the 16 second update period.
6.7 Temperature Display
If temperature is lower than minimum range, the temperature field will display dashes (--.-).
If temperature is higher than maximum range, the temperature field will display dashes (--.-).
6.7.1 Wind Chill, Dew Point and Heat Index Display
Press the [TEMP] button to switch between Outdoor Temperature, Wind Chill, Heat Index, Dew Point.
6.8 Alarms
6.8.1 Viewing High and Low Alarms
To view the high alarm settings, press (do not hold) the ALARM button, and the high alarms will be displayed, as
shown in Figure 18 (a).
To view the low alarm settings, press the ALARM button again, and the low alarms will be displayed, as shown in
Figure 18 (b).
To return to normal mode, press the ALARM button again.
(a)
(b)
Figure 18
6.8.1.1 Rain Alarm
While the High Alarm is displayed (reference Section 6.8.1), press the RAIN button to display the rain rate and daily
rain alarm values.
6.8.1.2 Wind Alarm
While the High Alarm is displayed (reference Section 6.8.1), press the WIND button to display the wind speed and
wind gust alarm values.

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6.8.2 Setting High and Low Alarms
Press and hold the ALARM button for two seconds to enter the ALARM Set Mode. To save and proceed to the next
alarm setting, press (do not hold) the SET button.
To exit the alarm mode at any time, press the LIGHT / SNOOZE button.
Figure 19 summarizes the alarm mode sequence and commands.

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Command
Mode
Settings
[ALARM]
+ 2
seconds
Enter Alarm Set Mode,Alarm
Hour
Press [WIND +] or [PRESSURE -] to adjust alarm hour up or
down.
Press [ALARM] to turn the time alarm on or off. When the alarm
is on, the alarm time icon will appear.
[SET]
Alarm Minute
Press [WIND +] or [PRESSURE -] to adjust alarm minute up or
down.
Press [ALARM] to turn the time alarm on. The alarm time icon
will appear.
Press [ALARM] again to turn the time alarm off. The alarm time
icon will disappear.
[SET]
Alarm High Indoor Temperature
Press [WIND +] or [PRESSURE -] to adjust alarm value up or
down.
Press [ALARM] to turn the alarm on. The alarm icon will
appear.
Press [ALARM] to turn the alarm off. The alarm icon will
disappear.
[SET]
Alarm Low Indoor Temperature
Press [WIND +] or [PRESSURE -] to adjust alarm value up or
down.
Press [ALARM] to turn the alarm on. The alarm icon will
appear.
Press [ALARM] to turn the alarm off. The alarm icon will
disappear.
[SET]
Alarm High Indoor Humidity
Press [WIND +] or [PRESSURE -] to adjust alarm value up or
down.
Press [ALARM] to turn the alarm on. The alarm icon will
appear.
Press [ALARM] to turn the alarm off. The alarm icon will
disappear.
[SET]
Alarm Low Indoor Humidity
Press [WIND +] or [PRESSURE -] to adjust alarm value up or
down.
Press [ALARM] to turn the alarm on. The alarm icon will
appear.
Press [ALARM] to turn the alarm off. The alarm icon will
disappear.
[SET]
Alarm High Outdoor
Temperature
Press [WIND +] or [PRESSURE -] to adjust alarm value up or
down.
Press [ALARM] to turn the alarm on. The alarm icon will
appear.
Press [ALARM] to turn the alarm off. The alarm icon will
disappear.