FCC ID: RNT-WS300US Weather Station Set

Radio Weather Station WS 300US Operating instructions

((New photo)) ELV Electronics Ltd. Hong Kong 1 1st English edition January 2004 Documentation 2003 ELV Electronics Limited All rights reserved. This handbook must not be reproduced in any form, even in excerpts, or duplicated or processed using electronic, mechanical or chemical procedures without written permission of the publisher. This handbook may contain mistakes and printing errors. The information in this handbook is regularly checked and corrections made in the next issue. We accept no liability for technical mistakes or printing errors, or their consequences. All trademarks and patents are acknowledged. Printed in Hong Kong Modifications due to technical improvements may be made without prior notification. 57010 Y2004V1.0 2 Contents 1. General information and functioning ........................................................................................................ 4 Quick overview of the display fields on the main display ............................................................................. 6 2. 2.1. 2.2. 3. 3.1. 3.2. 3.3. 4. 5. 6. 7. 7.1. 7.2. 8. 9. 10. 11. Preparation for operation ........................................................................................................................... 7 The outdoor sensors ..................................................................................................................................... 7 Commissioning the KS 300US, installing batteries, erection ....................................................................... 7 Base unit, installing batteries, erection ......................................................................................................... 8 Operation ..................................................................................................................................................... 9 Basic settings, configuration ........................................................................................................................ 9 Setting the date and time ........................................................................................................................... 10 Setting the degree of longitude and degree of latitude .............................................................................. 11 Setting the time zone .................................................................................................................................. 12 Entering the calibration value for the rain sensor ....................................................................................... 13 Setting the unit for rainfall measurement .................................................................................................... 13 Assigning the indicator path ....................................................................................................................... 14 Setting the unit for wind speed measurement ............................................................................................ 14 Leaving configuration mode ....................................................................................................................... 14 Operation .................................................................................................................................................... 15 Selecting the indoor temperature display (temperature/dew point) ........................................................... 15 Selecting the outdoor temperature display (temperature/dew point/wind chill) ......................................... 15 Selecting the outdoor sensor ..................................................................................................................... 15 Selecting the rainfall display period ............................................................................................................ 15 Resetting the total rainfall quantity ............................................................................................................. 15 Calling up/deleting MIN/MAX values .......................................................................................................... 16 Additional functions .................................................................................................................................... 17 Moon phase display ................................................................................................................................... 17 Wiz Kid ........................................................................................................................................................ 17 Weather forecast ......................................................................................................................................... 17 Wind symbol display (wind sock) ............................................................................................................... 17 Instant rain display ...................................................................................................................................... 18 Comfort indicator ........................................................................................................................................ 18 Changing batteries ................................................................................................................................... 18 Information on fault removal ................................................................................................................... 19 Range ......................................................................................................................................................... 20 Maintenance and servicing information ................................................................................................. 20 Cleaning the rain sensor ............................................................................................................................. 20 Calibrating the rain sensor .......................................................................................................................... 22 Technical data ........................................................................................................................................... 23 Explanation of terms ................................................................................................................................ 23 Intended usage, exclusion of liability, safety instructions .................................................................... 25 FCC Information ......................................................................................................................................... 25 Position table showing selected locations in the US .................................................................................. 26 3 1. General information and functioning The WS 300US Radio Weather Station is a high-quality universal weather measu-

ring system that processes a wide range of weather data and additional informa-

tion and can display both current values and forecasts. All relevant data are displayed simultaneously on the LCD display, while addition-

al data can be called up at the press of a button as required. The figure of the "Wiz Kid" is a special feature. Its clothes indicate the actual temperature range of the outside temperature, its hair and scarf the current wind speed range and an umbrella forecast precipitation and the beginning and current precipitation. The weather station is operated completely wireless by means of batteries; all external sensors transmit their data by radio on the 433 MHz frequency (range up to 100 m in the open). The display and control possibilities of the WS 300US at a glance:

Display of the indoor temperature and humidity

- Temperature display in F

- Can be switched over to display the dew point indoors

- Storage of the minimum and maximum temperature with the time/date of occurrence

- Storage of the minimum and maximum humidity with the time/date of occurrence

- Comfort zone indicator

- Graphic indicator path for the last 24 h Display of one of max. 9 outdoor sensors (temperature and humidity)

- Optional display of temperature, dew point or wind chill temperature

- Storage of the minimum and maximum temperature with the time/date of occurrence

- Storage of the minimum and maximum humidity with the time/date of occurrence

- Graphic indicator path for the last 24 h Display of the wind speed

- Selectable units: km/h, m/s, mph

- Storage of the maximum wind strength with time/date of occurrence

- Graphic additional display (wind sock) for light, moderate and strong wind Display of the amount of rainfall in mm, l/m2 or inch for:

- Total quantity since the last reset / last hour / last 24 h

- Storage of the maximum amount per hour and per day

- Additional display for commencing rain (instant rain display) 4 Display of the change / trend in air pressure:

- Graphic display of the changes in the last 24 h

- Display of the air pressure trend in 5 steps: rising steeply, rising, no change, dropping, dropping steeply Symbolic indication of the weather forecast: rainy, cloudy, fine, sunny Indication of the time and date

- Integrated quartz clock Indication of sunrise and sunset

- Based on the location data to be entered individually, can be calculated in the range of the degrees of latitude -60 to +60 N Moon phase display

- Display of the current moon phase: new moon, waxing moon, full moon, waning moon

"Wiz Kid" weather display Echoing the almost forgotten weather house, where in bad weather a person would step out of the door with an umbrella and in good weather would be lightly clothed, the WS 300US has its own "Wiz Kid". The behaviour of this figure depends on several weather factors, enabling someone to see at a glance what sort of clothing would be appropriate for wearing outside in that weather. The current parameters for outdoor temperature, humidity, wind and rain are not the only factors to be analysed. The weather forecast also plays a major role here. Thus the "Weather Willie" can appear in a variety of forms and clothing according to the weather situation. Please refer to page 24 of these operating instructions for a detailed description of the analytical criteria. Please read these instructions carefully from start to finish before initial start-

up to avoid functional breakdown and faulty operation. Keep the instructions available for future reference. Pay particular attention to the installation and calibration instructions for the instruments for recording the measured values. 5 Quick overview of the display fields on the main display INDOOR OUTDOOR F F HUMIDITY HUMIDITY SENSOR

WIND mph RAIN total HISTORY inch 24 20 16 12 8 4 0 SUNRISE SUNSET TIME AM AM PM DATE 1 2 3 4 5 6 7 8 9 17 16 15 14 13 12 11 10 1. Current temperature, indoor sensor 2. Current humidity, indoor sensor 3. Comfort zone indicator for the display of pleasant/unpleasant climate 4. Display for the onset of rain 5. Display of the rainfall, in this case in the last 24 h 6. Tendency display for air pressure: rising steeply, rising, constant, falling, falling steeply 7. History display, in each case relative to the value chosen in the configuration; in this case the air pressure 8. Display of sunrise and sunset 9. Time and date display 10. Animated "Wiz Kid" multi-weather display 11. Wind speed display 12. Wind speed display (light, moderate, strong) 13. Display of the current chosen outdoor sensor; no display if combi-sensor is chosen 14. Current humidity of the selected outdoor sensor 15. Current temperature of the selected outdoor sensor 16. Moon phase display 17. Weather forecast display (sunny, bright, cloudy, rainy) The respective units of measurement are assigned via the weather station configuration (see further instructions). 6 2. Preparation for operation Start up all outdoor sensors first, then the base station. 2.1. The outdoor sensors The following outdoor sensors are available for the weather station:

- KS 300US combi-sensor: This is a permanently addressed combination sensor consisting of rain sensor, instant rain detection sensor, wind speed sensor, outdoor temperature/humidity sensor and integrated transmitter unit. Operation is by means of three Mignon batteries.

- ASH 2200US outdoor temperature/humidity sensor: Addressable sensor, battery-

operated (2 LR6/Mignon/AA batteries). Up to 8 sensors of this type can be used for operation on the WS 300US. Commissioning KS 300US The KS 300US is commissioned according to the following procedure:

- Assemble the plug mast of the sensor by screwing the individual tubes together using the threaded adapters, insert the earth spike at the base and screw the sensor holder on at the top.

- Open the housing of the sensor by turning the housing anticlockwise and pulling from underneath (see picture bottom left).

- Insert three Mignon batteries into the battery compartment as indicated by the pole markings in the compartment. To detach:

Turn to the left, remove from underneath To attach:

Attach, turn to the right

Bottom 7 The sensor will now be in synchronisation mode for about 5 minutes, during which one data packet will be sent every 4 seconds.

- Close the housing again by pushing it up and turning it clockwise until it engages.

- Erect the now fully assembled sensor within the possible transmission radius (up to 100 m in the open, but make allowances for the attenuating effects of walls etc.) so that it stands alone in such a way that both precipitation can fall directly into the rain sensor and that the wind measurement is not distorted by nearby build-

ings, trees etc. A sunny spot is possible, since the temperature sensor is located in a shaded and ventilated area of the housing.

- Push the earth spike far enough into the soil for the sensor to stand securely and the devices to be about 2 m above ground level. ASH 2200US For the installation, addressing and commissioning of this sensor, please refer to the operating instructions supplied with the unit. 2.2. Base unit The weather station is operated with 4 x 1.5 V LR6/Mignon/AA (alkaline) batteries.

- If the stand of the weather station is already assem-

bled, detach it by folding back the station on the table.

- Open the battery compartment on the rear of the station by lifting it up and insert four Mignon batter-

ies according to the poling marked in the compart-

ment.

- Close the battery compartment again.

- After a display test phase in which the display shows all the available segments, the weather station goes into a synchronisation phase for 15 minutes. During this time all the received radio weather sensors will be displayed immediately one after the other. If all the sensors you installed have already been received, you can end synchronisation mode early by pressing any key, provided that the KS 300US has also left its synchronisation mode.

Bottom

- After synchronisation all weather data are displayed as normal as shown in page 6. Only sunrise and sunset and the moon phase are not yet displayed, because the clock and calendar have yet to be set.

- Configure the base unit as described under 3.1. 8 Setting up/Wall mounting Depending on requirements, the weather station can be hung on a vertical surface

(wall) by means of the attachment eye or set up on a horizontal surface using the fold-out desk stand.

- The desk stand is erected as illustrated in the following pictures. It is important that the short claws of the desk stand are first inserted into the brackets on the rear of the unit.

- The desk stand is then tilted forward until the long claws engage in the snap-in brackets on the bottom side of the station. 3. Operation After the installation of the radio sensors and the subsequent commissioning of the base unit, the transmitted and converted data appear in the appropriate fields of the display. If the display does not appear you will find information on trouble-

shooting in section 6 ("Faults"). 3.1. Basic settings, configuration The weather station is delivered in such a way that it is operational in its basic functions (apart from moon phase, sunrise and sunset display, date and time) immediately after commissioning. However, further configuration is required in order to make use of the additional time-related functions. The following settings are required:

- Year, date, time

- Status of the daylight saving time (On/Off)

- Input of the longitude and latitude of the location

- Time zone input Expanded settings:

- Rain sensor calibration

- Unit of rain quantity

- Assignment of the indicator path (air pressure, inside and outside temperature)

- Unit of wind strength 9 In configuration mode the keys have the following functions:

not used IN SENSOR EXIT MIN/MAX +

RAIN NEXT OUT Leave configuration mode Increase value Decrease value To the next setting This key assignment is also shown on the rear of the weather station. Please note!

If you press and hold down the "+" or "-" keys during the individual setting opera-

tions, the figures will run through more quickly. After every setting operation you can either leave configuration mode by pressing the "EXIT" key or proceed to the next setting via the "NEXT" key. Configuration is performed in this order:

Year Month Day Minutes Hours Daylight saving time Deg. latitude (LA = Latitude) Deg. longitude (LO = Longitude) Time zone (ti) Rain sensor calibration Rain quantity unit Assignment of indicator path Wind unit IN

[2 seconds]

Calling up configuration mode Configuration mode is called up by pressing the "IN" key for about 2 seconds. When the key is released the corresponding display is shown. You can leave configuration mode at any time as described in "Leaving configuration mode". Setting the date and time

NEXT

NEXT Year Set the current year using the "+" and "-" keys. Press "NEXT" to go to the month setting. Month Set the month using the "+" and "-" keys. Press "NEXT" to go to the day setting. 10

NEXT

NEXT

Day Set the day using the "+" and "-" keys. Press "NEXT" to go to the minutes setting. Minute Set the minutes using the "+" and "-" keys. Press "NEXT" to go to the hours setting. Hour Set the hours using the "+" and "-" keys. NEXT Display "dSt"

Hour Press "NEXT" to go to the setting of the daylight-saving-time status. This is indicated by "dSt" in the display. Setting the status of the daylight saving time Press "-" to switch off the daylight saving time or press "+" to switch on the daylight saving time. NEXT Display "dSt"

Press "NEXT" to go to the latitude setting. This is indicated by "LA" in the display. Entering latitude and longitude Indication of the exact position of the weather station is required so that sunrise and sunset times can be calculated. The degree of latitude can be set in a range between 60.0 and +60.0. The factory setting is the position of xxx. You can determine your position in a number of ways:

In the appendix is a table showing the coordinates of many towns and cities in the US. You can select a location near you and enter its coordinates. If you have a GPS navigation system, e.g. in the car or a mobile device, you

11

can copy its position indication to obtain an exact location. Exact coordinates can also be obtained from the Internet. There are numerous sites which deal with navigation. Remember that strictly speaking the information for sunrise and sunset applies only by the sea or for land that is completely flat. Mountains, high forests etc. can reduce the actual daytime considerably. Even in an ideal location the figures may deviate by a few minutes since an approxi-

mation formula is used for the calculation.

NEXT

Latitude Set the latitude using the "+" and "-" keys. Example: for 38,9, enter: 389 Display "LO"

Press "NEXT" to go to the longitude setting. This is indicated by "LO" in the display. Longitude Set the longitude using the "+" and "-" keys. Example: for 283,0, enter: 2830 NEXT Display "ti"

Press "NEXT" to go to the time zone setting. This is indicated by "ti" in the display. Setting the time zone Indication of the time zone is required so that the sunrise and sunset times can be calcu-

lated. The actual difference from UTC (Uni-

versal Time) must be entered.

Time zone Enter the actual value for your time zone using the "+" and "-" keys. 12 All the settings required for the weather station to operate normally have now been made. The expanded settings are not needed for normal operation. EXIT or NEXT Quit configuration Press the "EXIT" key to leave configuration mode and return to normal mode. Expanded settings Press the "NEXT" key in order to make expanded settings and to calibrate the rain sensor.

Calibration value NEXT Entering the rain sensor calibration value The rainfall measuring system is delivered ex-

works with a high accuracy, so that normally no calibration is required. The calibration value must initially be determined in normal mode as described under 7.2. Enter the previously calculated calibration value using the "+" and "-" keys. Press "NEXT" to proceed to inputting the unit of rainfall measurement. Setting the unit for rainfall measurement The unit for the rainfall is indicated in the

"RAIN" field and can be expressed as l/m2 or as mm.

NEXT Unit for rainfall Select the desired unit using the "+" and "-"

keys. Press "NEXT" to get to the input function for the indicator path. 13 Assigning the indicator path The movement of the air pressure, the inside or the outside temperature can be illustrated in the display field of the graphic indicator path. If the indicator path is assigned to one of the two temperature displays, the addition-

al symbol "

" appears in the relevant display field. Abbreviations in the display field:

P O I Air pressure Outside temperature Inside temperature

NEXT Assign history Select the desired assignment using the "+"

and "-" keys. Press "NEXT" to proceed to inputting the unit of wind speed measurement. Setting the unit for wind speed The unit can be chosen from km/h, m/s or mph and is displayed in the "WIND" field.

Unit for wind Select the desired unit using the "+" and "-"

keys. EXIT Leaving configuration mode Press the "EXIT" key to leave. 14 3.2. Operation Selecting the indoor temperature display In normal mode the "INDOOR" display field shows the indoor temperature and indoor humidity.

- By repeatedly pressing the "IN" key, you can switch between displaying the indoor temperature and the associated dew point value:

Indoor temperature Dew point Selecting the outdoor temperature display In normal mode the "OUTDOOR" display field shows the outdoor temperature and outdoor humidity of the chosen outdoor sensor.

- By repeatedly pressing the "OUT" key, you can switch between displaying the outdoor temperature and the associated dew point value or the perceived temperature (wind chill):

Outdoor temperature Dew point Wind chill Selecting the outdoor sensor The "Sensor" display field shows the outdoor sensor you have just selected, along with its address. Only active sensors (received in the synchronisation phase) are displayed. The outdoor sensors 1 to 8 (ASH 2200US) and the combi-sensor (no address shown) can be displayed.

- You can select the desired sensor by repeatedly pressing the "SENSOR" key. Selecting the rainfall display period

- By repeatedly pressing the "RAIN" key, you can switch between the indication for the last hour, the last 24 hours or the total quantity since the last reset or since the batteries were inserted:

1 h 24 h Total Resetting the total rainfall quantity

- Press and hold the "RAIN" key down for about 2 s to reset the total rainfall quantity immediately after the key is released. 15 Calling up MIN/MAX values The minimum and maximum values reached for the indoor and outdoor temperature and indoor and outdoor humidity since the data were last deleted are saved. For the wind speed and rainfall measurement, only the MAX values are saved. For all figures, the date and time that the extreme value occurred are also saved. The stored data can be called up as follows:

Calling up minimum values

- Press the "MIN/MAX" key once:

The display shows all minimum values in the relevant display fields. "MIN" appears in the middle of the display. There is no indication for wind and rain. Calling up maximum values

- Press the "MIN/MAX" key twice:

The display shows all maximum values in the relevant display fields. "MAX" appears in the middle of the display.

- Press the "MIN/MAX" key again to return to the normal display. Displaying the time/date for an individual extreme value, deleting the extreme value For each individual extreme value you can, if necessary, view the relevant time and date on which it occurred.

- Select the display of the minimum values (press the "MIN/MAX" key once) or the maximum values (press the MIN/MAX" key twice).

- Press the "SENSOR" key repeatedly. Now only one display field with its extreme value will be shown in turn, and underneath in the time display the time and the date on which it occurred, shown in the following order. Indoor temperature Indoor humidity Outdoor temperature Outdoor humidity Rainfall (MAX only, not in the case of TOTAL) Wind speed (MAX only)

- Press the key once more to return to the complete display of all extreme values

(MIN or MAX). Deleting MIN/MAX values

- If the individual extreme values are called up as described above, you can delete each of them in turn by pressing and holding the "RAIN" key down. 16 3.3. Additional functions Moon phase display The moon phase is displayed with the following symbols:

Full moon Waning New moon Waxing Wiz Kid The Wiz Kid is an animated figure that indicates several weather factors at the same time:

Outdoor temperature (combi-sensor only)

- The clothing worn depends on the outdoor temperature on the combi-sensor. Rain

- If the forecast function has predicted rainy weather, the figure carries a furled umbrella.

- If rain is beginning, the figure carries an open umbrella. Wind speed

- At wind speeds in excess of 12,4 mph (moderate wind) the hair of the Wiz Kid waves. If the temperature is less than 57,2 F at the same time, the scarf that he now wears will also wave in the wind. Weather forecast

- The weather forecast symbols at the top of the display indicate the following predictions:

Clouds with rain Clouds Clouds with sun Sun Rainy Cloudy Fine Sunny Other display options Wind symbol display (wind sock)

- The wind sock symbol in the "WIND" display field allows you to see at a glance whether the wind is light, moderate or strong:

Wind sock hanging down Light wind (< 6,2 mph) Wind sock half raised Wind sock horizontal Moderate wind (6,2...12,4 mph) Strong wind (> 12,4mph) 17 Instant rain display

- The onset of rain is reported to the base station in the next radio data transmis-

sion and indicated by raindrops in the "RAIN" field and Weather Willies umbrella being open. Comfort indicator

- The comfort indicator () illustrates the climatic conditions (i.e. the rela-

tionship between temperature and humidity). Chapter 9 has a table of values for the display ranges. 4. Changing batteries Base station If the flat battery symbol appears in the display (Lo Bat changed for ones of the same type as described in Section 2.2 (Base unit, p. 8). Always change all 4 batteries and use only high-quality alkaline cells.

) all batteries must be Please note!

After changing the batteries, the weather station will be re-initialised, all stored settings will be lost and will have to be re-entered. Radio sensors The batteries in these sensors have a service life of up to 2 years (alkaline batter-

ies). They must be changed when the display of the appropriate sensor in the base device display does not appear for more than 24 hours and there is no general and longer lasting interference of the radio path, which can usually be recognised by the fact that data transmission from other, neighbouring sensors has also broken down (see Section 5, "Faults"). The batteries are changed as described under 2.1. Observe regulations for the disposal of batteries!

According to the German battery regulations you must return used or faulty batteries and accumulators to us or return them to local commercial or battery collection points. Batteries and accumulators must not be thrown away with household rubbish!

18 5. Information on fault removal Possible faults that could impair the correct display of the transmitted readings are:

No reception The distance between transmitter and receiver is too great. Reduce the distance between the transmitter and the receiver. No reception Dense shielding materials are positioned between the trans-

mitter and the receiver (thick walls, reinforced concrete, ...) Find another position for the transmitter and receiver. See also chapter 6 ("Range"). Transmitter batteries are discharged. Change batteries Transmitter is blocked by a source of interference

(radio device, radio headset/loudspeaker) Remove source of interference or find alternative location for transmitter and receiver. Often the interference is of a temporary nature (radio telephony) or can be removed very easily. If there are radio headsets, baby listening devices or similar devices operating on 433 MHz in your house or in the neighbourhood, their turn-on time is normally limited. Most of these devices permit change to a frequency free of inter-

ference. A measure such as this effectively cuts out interference. A radio sensor interferes with other devices in the 433 MHz range The transmissions from a radio sensor can interfere with other devices on the same channel for a short period (every 3 minutes for about 100 ms). Further information on installation and removal of interference Under critical reception conditions the sensor test mode makes it easier to choose the best possible location. For this purpose, the sensor concerned is put in test mode, so that every four seconds a data telegram is transmitted. To activate the test mode, remove the batteries from the sensors and then wait for at least 60 seconds before putting them back in. You must then initiate synchroni-

sation mode on the base unit, also by removing and then reinserting the batteries

(Attention! All settings and collected data will then be lost!) Rotate the weather station a little if required, and if reception is bad, locate it away from electric motors, electrical machines, televisions, computer monitors and large metal surfaces. To facilitate commissioning you can initially locate the sensors in the vicinity of the base unit (at least 2 m distance). In this way you can check the correct transmission of data by the sensor. 19 6. Range The free field range, i.e. the range of the line of sight contact between the transmitter and the receiver is 100 m under optimum conditions. Walls and even reinforced concrete can be penetrated, which does, however, reduce the range. A reduced range can occur due to the following reasons:

High-frequency interference of all kinds Built structures and vegetation of all types The distance of the transmitter or receiver from conductive surfaces or objects

(even to the human body or the ground) has an effect on the transmission characteristics and therefore the range. Wide band interference in built up areas can reach levels that reduce the signal-

noise ratio throughout the frequency band which results in a reduced range. Devices with adjacent working frequencies can also influence the receiver. Badly shielded PCs can irradiate the receiver and limit its range. 7. Maintenance and servicing information

- Protect the basic device against dust and moisture. Never clean it with chemical cleaning materials, use only a soft, dry cloth. Do not exert any pressure on the display.

- The outdoor sensor must be cleaned of adhering dirt from time to time. When you do so, check that the wind sensor can move freely and that the sensors are firmly located on the holder. 7.1. Cleaning the rainfall sensor

- Depending on the location, leaves and particles of dirt, sand, twigs etc. carried along by the wind can get into the collector funnel of the rainfall sensor. Larger items can clog up the opening. Sand can also accumulate in the counter rocker, distorting the measuring results as the quantity increases.

- The rainfall sensor should therefore be cleaned from time to time, but at least once a year.

- To do this, remove the sensor housing by turning it slightly to the left.

- The collector funnel is also removed by being turned to the left.

- The rainfall sensor is then lifted up and folded over towards the cable side so that the counter rocker can be removed. 20

- Clean residue from the collector funnel, contacts, counter rocker and drain hole at the bottom of the housing.

- Insert the counter rocker back into its bracket. The magnet of the counter rocker must be on the side next to the cable.

- Insert the rainfall sensor into its bracket. It will automatically hold the counter rocker firmly. The cable of the rainfall sensor and the magnet of the rocker arm must be on the same side.

- Then put the collector funnel onto the sensor holder from above and engage it by turning it to the right.

- Push the housing back in again from underneath and engage it in the sensor holder by turning it to the right until it slots in. Make sure that the drain holes of the housing and sensor holder coincide (drain hole of the housing points to the outside). The following pictures illustrate the disassembly/assembly process Rocker correctly installed Rainfall sensor correctly installed Slot for collection funnel Housing correctly engaged at bottom (collec-

tion funnel removed for illustrative purposes) Drain hole To detach:

Turn to the left, remove housing from underneath, remove collection funnel from above 1 - Full moon 2 - Waxing To attach:

3 - New moon Attach, 4 - Waning turn to the right 21 7.2. Calibrating the rain sensor The rainfall measuring system is delivered ex-works with a high accuracy, so that normally no calibration is required. Calibration is only necessary when very high accuracy is required. Before beginning to calibrate the rainfall measurement recorder, reset any total rainfall quantity that may be indicated in the normal display mode back to zero

(press and hold the "RAIN" key down for about 2 s in normal display mode - when the key is released, the total rainfall quantity will be zero). For the exact calibration proceed as follows:

1. Over a ten-minute period slowly pour 100 ml of water into the rain sensor collector funnel. CAUTION!

Pouring quickly will falsify the measurement result! Slowly pour the water into the funnel so water is at no time resting in the funnel. 2. The total amount displayed should be 6.5 l/m2. 3. If a different value is displayed, then the rocker value should be recalculated as follows:

New rocker value = 6.5 x current rocker value Actual value (display when filled with water) The new rocker value must now be entered in the configuration menu (see 3.1). It is always given in ml/rocker stroke, the units on the right are the units for the subsequent display of rainfall!

The factory setting is 295 ml/rocker stroke. 22 8. Technical data Measurement interval for outdoor sensors: .....................................approx. 3 min Measuring interval for indoor sensor: ........................................................ 10 min Transmission frequency: .................................................................... 433.92 MHz Free field range: .................................................................................. max. 100 m Indoor temperature range: .........................................................32 F to +175.8 F Resolution: ................................................................................................... 0.1 F Accuracy: ....................................................................................................1,5 F Outdoor temperature range (KS 300US): ................................. -21 F to +175,8 F Resolution: ................................................................................................... 0.1 F Accuracy: ....................................................................................................1.5 F Measuring range for relative humidity (indoor/outdoor): ...................... 0% - 99 %

Resolution: ....................................................................................................... 1%

Accuracy: ....................................................................................................... 5%

Rainfall indicator: ............................................................................. 0 to 99,9 inch Analysis interval: ................... last hour: at xx:30 hours, total for day: at 7.30 a.m. Resolution: ............................................................................................. < 0.3 mm Wind speed: ....................................................................................... 0 - 124 mph Resolution: ..................................up to 100 mph: 0.1 mph; over 100 mph: 1 mph Voltage supply:

Base station ......................................................4 x 1.5 V/LR6/Mignon/AA battery KS 300US: ........................................................3 x 1.5 V/LR6/Mignon/AA battery Dimensions (W x H x D) of base station: ... 160 x 220 x 35 mm (excluding stand) 9. Explanation of terms Perceived temperature - see Wind chill Dew point - Temperature point that is dependent on the conjunction of a specific air pressure, a specific temperature and a specific humidity. At this temperature humidity begins to condense, the so-called dew, the humidity condenses and precipitates as a liquid. If the dew point for water vapour is less than 32 C, the condensation occurs as snow or frost. Weather forecast - Forecast display using weather symbols, calculated from the speed at which the air pressure rises or falls (tendency). The speed of change of air pressure is the critical factor for the prediction of the coming weather; the absolute value is of secondary importance. In general, it can be said that rising air pressure indicates better weather, while falling air pressure indicates deteriorating weather. Wind chill equivalent temperature (perceived temperature) - A fictitious temperature, which the human body feels under certain conditions instead of the measured temperature, and which can be used at low temperatures (e.g. less than 23 44,6 F) to say how comfortable one feels at certain temperatures and wind speeds whilst wearing appropriate clothing. These conditions are a temperature below 91,4 F and a wind speed higher than 9,4 mph. Wind chill is defined as the cooling effect of uncovered skin at an assumed constant 91,4 F skin surface temperature. The higher the wind speed is and the lower the actual temperature, the more noticeable is the wind chill effect. The "perceived temperature" is roughly comparable to the so-called felt tempera-

ture, which additionally takes into account the radiation effect of the sun, light re-

fection from the clouds, the light wavelength, etc. Beaufort 0 1 2 3 4 5 6 7 8 9 10 11 12 Wind strength table Wind speed mph 0 - 1 1 - 3 4 - 7 8 - 12 13 - 18 19 - 24 25 - 31 32 - 38 39 - 46 47 - 54 55 - 63 64 - 72

> 73 Wind speed km/h 0 - 0,7 0,8 - 5,4 5,5 - 11,9 12,0 - 19,4 19,5 - 28,5 28,6 - 38,7 38,8 - 49,8 49,9 - 61,7 61,8 - 74,6 74,7 - 88,9 89,0 - 102,4 102,5 - 117,4

> 117,4 Description Calm Slight air Light breeze Gentle breeze Moderate breeze Fresh breeze Strong breeze Moderate gale Fresh gale Strong gale Whole gale Storm Hurricane The Comfort Indicator () represents the climatic conditions, for which the following table is used (the symbol status shows the area of validity):

Temperature Humidity 20% 30% 35% 40% 45% 50% 55% 60% 65% 70%

< 64,4F 64,4F-67,8F

67,9 F-71,4F 71,4F-75,0F

75,1 F-78,6F 78,7F-82,2F

> 82,2F

24 It can be seen from this that, depending on the ratio of temperature to humidity, there are clearly bounded areas, which are defined as a comfortable or an uncomfortable climate. Hence, one finds a humidity level of 30% at a temperature of 77 F, for example, to be too dry (e.g. heating air) and one above 60% to be sultry. 10. Intended usage, exclusion of liability, safety instructions

- This weather station is intended for domestic use as an indicator of future weather. The forecasts of this device are to be considered guidelines only and do not in any way constitute absolutely accurate predictions.

- The manufacturer of this weather station accepts no responsibility for incorrect measurements and the consequences arising therefrom.

- This weather station is not suitable for medical purposes or for the information of the public.

- The components of this weather station are not toys! They contain breakable glass and small parts. Erect all components in such a way that they are out of the reach of children. 11. FCC Information FCC ID: RNT-WS300US Changes or modifications not expressly approved in writing by ELV Electronics Limited may void the users authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help. 25 The internal antenna used for this mobile transmitter must provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1)

(2) this device may not cause harmful interference, and this device must accept any interference received, including interference that may cause undesired operation. 26 27 ELV Electronics Ltd. Hong Kong 28