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EATHER

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ANUAL

Product # 7450 & 7455

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Содержание GroWeather

Страница 1: ...G R O W E A T H E R S Y S T E M CONSOLE USER S MANUAL Product 7450 7455...

Страница 2: ...al 7 16 99 This product complies with the essential protection requirements of the EC EMC Directive 89 336 EC Davis Instruments Corp 1997 All rights reserved GroWeather is a trademark of Davis Instrum...

Страница 3: ...G R O W E A T H E R S Y S T E M CONSOLE USER S MANUAL...

Страница 4: ...Radiation 9 Rainfall 10 Barometric Pressure 10 Relative Humidity 11 Dew Point Leaf Wetness 11 Time 12 PERIOD 12 AUTOCLEAR 13 HIGHS AND LOWS 13 ALARMS 14 USING THE GROWEATHER 17 USING THE ENTER KEY 17...

Страница 5: ...1 Clearing Daily Solar Energy 32 RAINFALL 32 Viewing Rainfall 33 Selecting Units of Measure 34 Entering Total Rainfall 34 High Rate of Rainfall 34 Clearing Daily and Total Rainfall 34 Alarms 35 BAROME...

Страница 6: ...le of Setting an Alarm Threshold Low Outside Air Temperature Alarm 48 Daily ETo Alarm 49 Setting the Barometric Pressure Alarm 49 Setting the Dew Point Alarm 49 To Silence an Alarm 50 To Clear an Alar...

Страница 7: ...Table of Contents Page iv...

Страница 8: ...rature humidity index and wind chill apparent tempera ture growing degree days soil temperature humidity dew point leaf wet ness barometric pressure evapotranspiration rainfall and rate of rainfall Cu...

Страница 9: ...al temperature section for restrictions Leaf Wetness Sensor Enables you to measure and display the surface moisture on foliage See note in external temperature section for restrictions Rain Collector...

Страница 10: ...ter tem perature sensor with Radiation Shield Solar Radiation Sensor Rain Collector Shelf etc Radiation Shield Protects the temperature sensor or temperature humidity sensor from solar radiation and o...

Страница 11: ...Introduction to the GroWeather System Page 4 GroWeather Manual...

Страница 12: ...ion keys and operation keys The larger and more square keys e g TEMP RAIN WIND are the function keys and are used to display the various conditions measured and calculated by the GroWeather The smalle...

Страница 13: ...information on AutoClear see AutoClear on page 13 The notation Alarm next to a weather condition indicates that an alarm exists for the weather condition The type of alarms are noted after the colon F...

Страница 14: ...c degree day totals See Optional Accessories on page 2 for more details Unlike strict time predictions of plant pest development degree day predic tions hold true regardless of location or temperature...

Страница 15: ...8 F 20 C because it is a measure of heat stress which is not significant at lower temperatures 125 F 52 C is the highest T H Index for which calculation factors are available Above that the system sim...

Страница 16: ...Current Wind Speed Alarm High Daily Wind Run AutoClear Average Wind Run per day during period Wind Direction High Wind Speed with time and date of occurrence and direction of high Auto Clear Solar Rad...

Страница 17: ...gher the atmospheric pressure which means that atmospheric pressure changes with altitude To compensate for this difference and facilitate comparison between locations with different altitudes atmosph...

Страница 18: ...d wet surfaces since warm air with low humidity has a large capacity for extra water vapor Relative Humidity of Outside Air Alarm High Low Daily High and Low Relative Humidity reading with time of occ...

Страница 19: ...with the number of days which have elapsed since the beginning of the period Note The system records the start time of the period to the nearest 90 minutes Therefore all average val ues are exact to...

Страница 20: ...cident Solar Energy Sum Daily Rainfall and High Rate of Rainfall High and Low Relative Humidity HIGHS AND LOWS The GroWeather records highs and lows for many weather conditions All highs and lows repr...

Страница 21: ...read ing reaches the alarm threshold and continues to sound until the reading rises above the alarm threshold The table below summarizes the GroWeather s alarms CONDITION HIGH LOW TIME DATE AUTOCLEAR...

Страница 22: ...e hundredths of an inch ETo is returned to the air at the end of the hour 3 discrete signals will be generated by the station For this applica tion set the alarm threshold to 0 01 and attach an Alarm...

Страница 23: ...GroWeather System Overview Page 16 GroWeather Manual...

Страница 24: ...is changed separately The active digit the one which is currently ready to be changed flashes on and off in the display Pressing and releasing ENTER cycles through all available digits in a value mak...

Страница 25: ...place the negative sign begins to flash Hold ENTER as this digit cycles through the available entries one of which will be a negative sign if a negative entry is valid Example of Using ENTER Setting t...

Страница 26: ...to flash 9 Press and hold ENTER down The ones digit will begin to cycle through the possible entries 0 to 9 ENTERING THE ONES DIGIT 10 Release ENTER when the correct entry appears 11 If necessary rep...

Страница 27: ...toClear or as a result of the ETo alarm being triggered For instructions on clearing daily ETo see Clearing Daily ETo Sum on page 22 2 To display the total ETo for the period press ET again The total...

Страница 28: ...in If the AutoClear function is enabled the word On appears on the right of the display If the AutoClear function is disabled the word OFF appears on the right of the display See Enabling Disabling Au...

Страница 29: ...n page 12 You must set a base threshold and you may choose to set a high threshold You may display degree days in Fahrenheit or Celsius Note When viewing degree day information the compass rose does n...

Страница 30: ...otals and beginning a new period see Clearing Period Information Starting a New Period on page 44 3 To display the average daily degree days during the period press DEG DAYS again The average daily de...

Страница 31: ...page 51 for instructions The base threshold setting appears on the left of the display 8 Continuing to press DEG DAYS will cycle through all the degree days displays in a con tinuous loop Selecting Un...

Страница 32: ...displays the current air temperature soil temperature tem perature humidity index T H Index and wind chill In addition you may view the high and low air temperature the high T H Index and the low wind...

Страница 33: ...oClear function for air temperature soil temperature T H Index and wind chill On Off press TEMP again If the AutoClear function is enabled the word On appears on the right of the display If the AutoCl...

Страница 34: ...n the units of measure you select SAMPLE UNITS OF MEASURE High and Low Air and Soil Temperature T H Index and Wind Chill The GroWeather displays the high and low air temperature the high T H Index and...

Страница 35: ...wind speed and the unit of measure in which wind speed is being displayed appear at the center of the compass rose The compass rose appears on the GroWeather display at almost all times it does not ap...

Страница 36: ...the period press WIND again The date on which the period started appears on the right of the display The number of days in the period appears on the left of the display see Period Display on page 21...

Страница 37: ...displays the high wind speed along with the time and date at which it occurred and the direction of the gust For information on displaying and clearing highs and lows see Highs and Lows starting on p...

Страница 38: ...y the daily solar energy total press SUN again The daily solar energy total appears on the right of the display DAILY SOLAR ENERGY TOTAL Daily solar energy represents the amount of solar energy since...

Страница 39: ...gy total at any time to begin a new daily solar energy total 1 Press SUN as necessary to display the daily solar energy total 2 Press and hold down CLEAR until the daily solar energy total resets to z...

Страница 40: ...ime you cleared the total rainfall register For instructions on clearing total rainfall see Clearing Daily and Total Rainfall on page 34 3 To display the status of the AutoClear function for daily rai...

Страница 41: ...al rainfall 2 Use ENTER to set the correct barometric pressure See Using the Enter Key on page 17 for instructions on using ENTER 3 When finished entering the total rainfall amount press any function...

Страница 42: ...pears on the bottom right hand corner of the display gives you a visual indication of whether barometric pressure is steady rising or falling The barometric trend indicator updates approximately every...

Страница 43: ...NG BAROMETRIC PRESSURE INDICATOR Viewing Barometric Pressure 1 To display current barometric pressure press BAR The current barometric pressure appears on the right of the display CURRENT BAROMETRIC P...

Страница 44: ...ure reading will flash as a warning After four seconds the GroWeather will revert to normal entry mode i e only one digit flashing 4 Use ENTER to set the correct barometric pressure See Using the Ente...

Страница 45: ...barometric pressure 2 Press RECALL to display the stored barometric pressure 3 Press and hold down CLEAR The stored barometric pressure value begins to flash as a warning 4 Hold CLEAR until the curren...

Страница 46: ...which they occurred For information on displaying and clear ing highs and lows see Highs and Lows starting on page 45 Alarms You may set a high and a low alarm for relative humidity See Alarms on page...

Страница 47: ...em perature T H Index and Wind Chill on page 25 for instructions on display ing the soil temperature reading SOIL AND LEAF WETNESS DISPLAYS Selecting Units of Measure To select the desired unit of mea...

Страница 48: ...he date the year and the time at which you wish the GroWeather to perform the AutoClear each day In addition you may begin a new period erasing all information from the previous period Displaying Time...

Страница 49: ...he GroWeather executes the AutoClear function each day appears on the right of the display TIME OF AUTOCLEAR 5 To display the period information press TIME again The date on which the period started a...

Страница 50: ...to display the time date or year as desired 2 Use ENTER to set the time date or year If using the 12 hour format make sure you correctly set the time to AM or PM 3 Press any function key to exit The...

Страница 51: ...re informa tion 1 Press TIME as necessary to display the period information 2 Press and hold down CLEAR As you hold down CLEAR the display alternates between showing the number of days in the period a...

Страница 52: ...as a steady not flashing diamond at one of the points Displaying Highs and Lows 1 Press the appropriate key as necessary to display the desired weather condition 2 To view the high low press Recall Th...

Страница 53: ...lue erases the currently stored value in order to obtain a new high low reading 1 Press the appropriate key as necessary to display the desired weather condition 2 Press RECALL as necessary to display...

Страница 54: ...play remains SAMPLE ALARM If more than one alarm is triggered at once the GroWeather scans through all of the triggered alarms displaying each for approximately four seconds before moving to the next...

Страница 55: ...7 4 Press any function key to save and exit Example of Setting an Alarm Threshold Low Outside Air Temperature Alarm This example shows you how to set the GroWeather s low outside air tempera ture alar...

Страница 56: ...ou must have an AOM connected to your sys tem otherwise the ETo alarm will sound continuously Also make sure you set the alarm threshold in inches even if you are displaying total ETo in millimeters S...

Страница 57: ...ce an alarm that has been triggered press CLEAR The beeping sound stops though the alarm is not cleared The word ALARM and the function trig gering the alarm remain on the display until alarm conditio...

Страница 58: ...ther For instance clearing the high air temperature alarm does not clear the low air temperature alarm You must clear each alarm individually ENABLING DISABLING AUTOCLEAR The general procedure for ena...

Страница 59: ...Days Daily Solar Energy Daily Rainfall Total Rainfall High Rate of Rainfall To Use General Clear Feature 1 Press the appropriate function key as necessary to display any weather condition other than...

Страница 60: ...GroWeather and every high low value stored by the GroWeather Stopping a Scan Routine A scan routine will continue until you manually stop it or until an alarm is trig gered To stop a scan routine simp...

Страница 61: ...correct calibra tion number for your purposes Note Rainfall CAL must be a whole integer no decimals Generally if the GroWeather is set to display rainfall in a unit of measure other than the rain col...

Страница 62: ...splay Resetting Calibration Numbers to Default To completely reset all calibration numbers to their default settings follow the procedure below to completely remove power from and then restart the sta...

Страница 63: ...WER indicator indicates low power state or a disruption of the primary power source the power source connected to the POWER jack on the bottom of the unit If you see this indicator check the connectio...

Страница 64: ......

Страница 65: ...rred will appear Press Recall again to view the low if both a high and low are stored To clear a high low press the appropriate keys as necessary to display the desired high low Press and hold Clear u...

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