Model 9620 Series Compact Weather Stations User`s Manual
Contents
1. 6 3 3 North uu P 8 3 4 Default Conficuration Soest Oda usc nuits cu Io te Senda as sme M eu 9 2 Blegtrica C DISP LORS ea icto se Godd A LU 9 3 5 1 Summary of Signal and Power Wiring Connections 10 4 OPERATION WITH AN 11 TT sensor docu Ru e dod 11 4 1 1 Topic Based Sensor Poll 7 ea e qe ea dete seo MEE 11 4 1 2 Check Sum 13 5 STANDALONE MEASUEMENT 6 15 5 Measurements Generated e E a 15 5 4 Current Measurement dct E AE 15 5 1 2 Minimum and Maximum Values iere Ie itm RS e Neh Le Pda eae esatta 15 S 1 9 s AWeraee Valle c6 Lam 15 Mepbtorial Average Value VOL o CE been e CE date 15 5 2 Air and Dew point Temperature 16 2 9 Wand C htl Temperature wisi nets edu do n nei te pua ta oe ER A E 16 0 16 bd ed eade 17 5 6 Wet Bulb Terperat fe aroun 17 5 1 Wind Speed P2. 17 18 3 9 Wand Measurement 19 5 10 COMPASS 19 5 11 Precipitation Quantity Absolute 244 5 22 4 24 20 9620 Series Compact Weather Stations User s Manual 5 12 Precipitation Quantity 7 7 20 5 13 21 VDO 21 5dS Heating 1 6 22 0 Radiation 32242 ote tet 22 meo eli nie 23 24 8 TROUBLESHOOTING 25 9 SPECIFICA TO 2225 2205 ee eee ee 26 0 29 9620 Series Compact Weather Stations User s Manual 1 OVERVIEW The 9620 Series of Compact Weather Stations provides low cost light weight weather stations that can collect a variety of meteorological data based on the specific data you need The portable design of the 9620 Series makes this series of Compact Weather Stations ideal for a variety of unique applications while providing the same level of accuracy and dependability that you get with AWI s existing modular sensors The 9620 Series of Compact Weather Stations may be used on a standalone basis connected to your own data logging system or may be connected to either All Weath
3. Online support is available by filling out a request at www allweatherinc com support online suppott e E mail your support request to support allweatherinc com 9620 Series Compact Weather Stations Revision A Date 2015 June 25 Revision History Initial release Summary of Changes User s Manual 9620 Series Compact Weather Stations User s Manual TABLE OF CONTENTS TO VIER IEW i UT 1 1 1 6 52555254 cans tegen eee E s 1 1 2 A CCESSOTICS 225 5 1 2 THEORY 75 1 22 e do ea ccv va ovo do vade zv Has dv 2 2 Air Feniperature and 2 22 Alr ic E 3 2 2 SENT 3 Pe NY INN aa E E A E Ne ei 3 JP GIC IUE ERROR E onm 3 2 9 Gl bal ACTA OM sacs p ER 3 4 3 1 Selecting the Inst llation Location 0 gue 4 3 1 1 Wind Speed Direction Models 9620 9623 9624 9626 4 3 1 2 Compass Models 9620 9623 9624 9626 222222442 00000000000000000003484 2 3 1 3 Radar Precipitation Measurement Models 9622 and 9624 3 1 4 Global Radiation Measurement Models 9625 and 9626 5 3 2 Mechanical Installation
4. Absolute Lim 620 Precipitation Quantity Absolute mm 640 Precipitation Quantity Absolute in 660 Precipitation Quantity Absolute mil 5 12 PRECIPITATION QUANTITY DIFFERENTIAL Each request from a differential channel sets the accumulated quantity back to zero If the response from the device is lost due to a transmission error the quantity accumulated to date is also lost The quantity accumulated to date is also reset each time the equipment is rebooted 20 9620 Series Compact Weather Stations User s Manual Sampling rate Event dependent on reaching the response threshold Response threshold 0 01 mm Units L m mm in mil UMB Channel Measurement Variable float 32 Unit 605 Precipitation Quantity Differential Lim 625 Precipitation Quantity Differential mm 645 Precipitation Quantity Differential in 665 Precipitation Quantity Differential mil 5 13 PRECIPITATION INTENSITY Precipitation intensity is always calculated on the basis of the precipitation measured during the previous minute Sampling rate 1 minute Response threshold 0 6 mm h Units L m2 h mm h in h mil h Measuring Range UMB Channel Measurement Variable float 32 min max Unit 800 Precipitation Intensity 0 200 0 L m2 h 820 Precipitation Intensity 0 200 0 mm h 840 Precipitation Intensity 0 7 874 in h 860 Precipitation Intensity 0 7 874 Mil h
5. Precipitation sensor 3 heated Ultrasonic wind sensor Motor aspirated lt temperature relative humidity lt lt Connector Mounting hole Notch for attaching connection cable Figure 1 Possible Compact Weather Station Sensors Note that not all the sensors will be present on a given Compact Weather Station model 2 1 AIR TEMPERATURE AND HUMIDITY Temperature is measured using a highly accurate NTC thermistor whose resistance varies with temperature Relative humidity is measured using a capacitive humidity sensor In order to keep the effects of external influences such as solar radiation as low as possible these sensors are located in a motor aspirated housing with radiation protection In contrast to conventional non ventilated sensors this allows significantly more accurate measurement during high radiation conditions The dew point is calculated from the air temperature and relative humidity readings 9620 Series Compact Weather Stations User s Manual 2 2 AIR PRESSURE The air pressure is measured using a built in MEMS microelectromechanical capacitive sensor The altimeter setting and relative air pressure referenced to sea level can be calculated using the known elevation of the sensor above mean sea level which is user configurable on the equipment 2 3 PRECIPITATION Precipitation is measured by the 25 0 sensor which uses radar technology to
6. 5 8 WIND DIRECTION The second measurements are averaged over 10 seconds for the output of the current act measurement The fast channels deliver a value every second The minimum maximum wind direction indicates the direction at which the minimum maximum wind speed was measured The corrected wind direction is calculated from the wind direction measured by the wind sensor and the heading measured by the compass Optionally the compass correction of the wind direction can be activated for all wind direction values The correction function is designed to correct the wind direction of a statically mounted weather station If the alignment of the weather station changes during the measurement for example if the weather station is mounted on a rotating platform the correction function will not work properly in all cases especially for the vector average It is of course possible to use the correction function for mobile measurement units where the alignment is changed between measurement periods 18 9620 Series Compact Weather Stations User s Manual Sampling rate 10 seconds Generation of average value 1 10 minutes Generation of maximum value 1 10 minutes based on the internal second measurements Unit degrees Response threshold 0 3 m s UMB Channel Measurement Variable Measuring Range min max vct float 32 max Unit 500 520 540 580 Wind Direction 0 359 9 j 501 Wind Direction Fast 0 359 9 502
7. 5 14 PRECIPITATION TYPE A detected precipitation type remains valid for 2 minutes after the end of the precipitation event In order to record precipitation types that only occur for a short period e g short term rain the request interval should be 1 minute or shorter Ice hail and sleet are reported as rain 60 21 9620 Series Compact Weather Stations User s Manual Sampling rate Event dependent on reaching the response threshold Response threshold 0 002 mm Follow up time 2 minutes UMB Channel Measurement Variable uint8 0 No precipitation 40 Unspecified precipitation 60 Liquid precipitation e 9 rain 70 Solid precipitation e g snow 700 Precipitation Type 5 15 HEATING TEMPERATURES Sampling rate 1 minute Units C F UMB Channel Measuring Range Measurement Variable float 32 min max avg min max Unit 112 Wind Sensor Heater Temperature 50 0 150 0 C 113 Precipitation Sensor Heater Temperature 50 0 150 0 C 117 Wind Sensor Heater Temperature 58 0 302 0 F 118 Precipitation Sensor Heater Temperature 58 0 302 0 F 5 16 GLOBAL RADIATION The average maximum and minimum values are evaluated from the 1 minute averages of the 10 second spot value Sampling rate 10 seconds Generation of average value 1 10 minutes Unit W m UMB Channel Measuring Range Measurement Variable float 32 act min max avg min max Unit 900
8. Wind Direction Corrected 0 359 9 503 Wind Direction Standard Deviation 0 359 9 j The evaluation of the standard deviation values will be activated after the first request of a standard deviation channel 5 9 WIND MEASUREMENT QUALITY The value is updated every 10 seconds and transmits the minimum wind measurement quality for the last 10 second interval The fast value indicates the measurement quality of the one second measurement value This quality value allows the user to assess how well the measurement system is functioning in the respective ambient conditions In normal circumstances the value is 90 100 Values up to 50 do not represent a general problem If the value falls towards zero the measuring system is reaching its limits If the system is no longer able to conduct reliable measurements during critical ambient conditions the error value 55h 85d is transmitted device unable to execute valid measurement due to ambient conditions Sampling rate 10 seconds Unit UMB Channel Measurement Variable Measuring Range act min max avg vct 32 min max Unit 805 Wind Value Quality 0 100 806 Wind Value Quality fast 0 100 90 5 10 55 Reliable operation of the compass is only possible if the weather station has been mounted according to the instructions in this manual i e on top of a mast Should the weather station be mounted on a
9. minutes Units C F UMB Channel Measurement Variable Measuring Range act min max avg float 32 min max Unit 114 Wet Bulb Temperature 50 0 60 0 C 119 Wet Bulb Temperature 58 0 140 0 F 5 7 WIND SPEED The second measurements are averaged over 10 seconds for the output of the current act measurement The fast channels deliver a value every second Sampling rate 10 seconds Generation of average value 1 10 minutes Generation of maximum value 1 10 minutes based on the internal second measurements Units m s km h mph kts Response threshold 0 3 m s UMB Channel Measurement Variable Measuring Range min max avg float 32 min Unit 400 420 440 460 480 Wind Speed 0 75 0 mis 405 425 445 465 485 Wind Speed 0 270 0 km h 17 9620 Series Compact Weather Stations User s Manual UMB Channel Measurement Variable Measuring Range act min max avg float 32 min max Unit 410 430 450 470 490 Wind Speed 0 167 8 mph 415 435 455 475 495 Wind Speed 0 145 8 kts 401 Wind Speed Fast 0 75 0 m s 406 Wind Speed Fast 0 270 0 km h 411 Wind Speed Fast 0 167 8 mph 416 Wind Speed Fast 0 145 8 kts 403 Wind Speed Standard Deviation 0 75 0 m s 413 Wind Speed Standard Deviation 0 167 8 mph The evaluation of the standard deviation values will be activated after the first request of a standard deviation channel
10. traverse the distribution of iron mass will be different from the situation during factory calibration This may lead to additional deviation of the bearing This also applies to lightning rods mounted at the top of the mast 19 9620 Series Compact Weather Stations User s Manual Declination must also be taken into account in order to establish true north The declination can be added to the weather station using calibration software When the aspirator fan is not rotating the compass measurement value will be influenced by the magnetic field of the fan Normally the compass measurement will be performed with the fan rotating to compensate for this influence Otherwise the deviation from the fan must be determined and taken into consideration Sampling rate 5 minutes Unit degrees UMB Channel Measurement Variable Measuring Range act min max avg vet float 32 min max Unit 510 Compass Heading 0 359 5 11 PRECIPITATION QUANTITY ABSOLUTE This measurement reports the accumulated precipitation since the last reboot The measurement is retained for the duration of a short power failure To reset this value use the software configuration or disconnect the weather station from the power supply for at least one hour Sampling rate Event dependent on reaching the response threshold Response threshold 0 01 mm Units L m mm in mil UMB Channel Measurement Variable float 32 Unit 600 Precipitation Quantity
11. x4dc0 0x4c80 0x8c41 47 0 0 4680 0 8641 User s Manual 0 8201 0 42 0 0 4380 0 8341 0 4100 0 81 1 0 8081 0 4040 crc 1081 while length crc crc vals stringt crc 8 Oxff return crc end 02016 routine 14 crc gt gt 8 amp Oxff 9620 Series Compact Weather Stations User s Manual 5 STANDALONE MEASUEMENT OUTPUTS Measurements are transmitted in accordance with the UMB binary protocol 5 1 MEASUREMENTS GENERATED 5 1 1 Current Measurement act The value act of the last measurement is transmitted when the current measurement value is requested in accordance with the specified sampling rate Each measurement is stored in a circular buffer for the subsequent calculation of minimum maximum and average values 5 1 2 Minimum and Maximum Values The corresponding minimum min and maximum max values are calculated using data in the circular buffer for the specified interval 1 10 minutes These values are then transmitted In the case of wind direction the minimum maximum values indicate the direction at which the minimum maximum wind speed was measured 5 1 3 Average Value The average avg value calculated using data in the circular buffer for the specified interval 1 10 minutes and transmitted Moving averages can also be calculated this way For some values the standard deviation is calculated for the same interval The calculation of standard deviati
12. 0 xfccl 0xfd81 0 x3d40 0xff01 0 x3fc0 0x3e80 0 41 Oxfa01 0x3ac0 0x3b80 0xfb41 0x3900 0xf9c1 0xf881 0x3840 0x2800 0 0xee01 0 8 1 0 981 0 2 0 0 2 80 0 x2940 0xeb01 0 xef41 0x2d00 0 x2bc0 0x2a80 0 1 0 81 0 41 2 40 0 401 0 24 0 0 2580 0 541 0 2700 0 7 1 0 681 0 2640 0 2200 0 2 1 0 381 0 x2340 0xe101 0 x21c0 0x2080 0 xe041 0xa001 0x60c0 0x6180 0xa141 0x6300 0xa3c1 0xa281 0x6240 0x6600 0x6c00 0 0 1 0 781 0 1 1 0 01 70 0 7800 0 xb8c1 0xb981 0 x6740 0xa501 0 x6d40 0xaf01 0 x65c0 0x6480 x6fc0 0x6e80 0 0 1 1 xab41 0x6900 0xa9c1 0xa881 0x6840 x7940 0xbb01 0 x7bc0 0x7a80 0 xba41 0xbe01 0x7ec0 0x7 80 0xbf41 0x7d00 0xbdc1 0xbc81 0x7c40 x74c0 0x7580 0xb541 0x7700 0 0xb401 0 13 xb7cl 0xb681 0 x7640 Ay 9620 Series Compact Weather Stations 0x7200 0xb2c1 0xb0381 0x7340 0xb101 0x71c0 0x7080 0xb041 0x5000 0x90c1 0x9181 0 0x9601 0x56c0 0x5780 0 x5140 0x9301 0 x9741 0x5500 0 x53c0 0x5280 0x9241 x95c1 0x9481 0x5440 0x9c01 0x5cc0 0x5d80 0x9d41 0x5 00 0x9 fc1 0x9e81 0x5e40 0x5a00 0x9ac1 0x9581 0 x5b40 0x9901 0 x59c0 0x5880 0x9841 0x8801 0x48c0 0x4980 0x8941 0x4Db00 0x8bc1 0x8a81 0x4a40 0x4e00 0x8ec1 0x8 81 0x4f40 0x8d01 0 0x4400 0x84c1 0x8581 0 x4540 0x8701 0
13. 9620 WS200 UMB 9621 WS300 UMB 9622 WS400 UMB 9623 WS500 UMB 9624 WS600 UMB 9625 WS301 UMB 9626 WS501 UMB Consult Universal Measurement Bus Communication Protocol for Meteorological Sensors for information about the UMB protocol 23 9620 Series Compact Weather Stations User s Manual 7 MAINTENANCE Once installed the weather station pyranometer requires little maintenance Inspect and clean the diffuser monthly using a soft cloth and water preferably in the morning Clean the ultrasonic transducers used for wind measurements monthly using a soft cloth and water There are no other recommended maintenance procedures Please arrange for any faulty equipment to be checked and if necessary repaired by All Weather Inc Do not open the equipment and do not under any circumstances attempt to carry out your own repairs 24 9620 Series Compact Weather Stations User s Manual 8 TROUBLESHOOTING Weather station does not allow polling does not respond Check power supply Check interface connection Weather station reports precipitation when it is not raining Check that the weather station was installed correctly The measured temperature appears too high measured humidity appears too low Check the operation of the aspirator fan Wind direction values are incorrect Weather station is not correctly aligned check that the weather station is aligned to the North The quality of the wind me
14. Global Radiation 0 0 1400 0 W m 22 9620 Series Compact Weather Stations User s Manual 6 CONFIGURATION The 9620 Series of Compact Weather Stations is delivered preconfigured and ready to use The following default settings are programmed Class ID 7 cannot be modified Device ID 1 address 7001h 286734 Baud rate 19200 bps RS 485 protocol Binary Calculation interval 10 measurements Local altitude 0 m above mean sea level The Device ID needs to be changed only if more than one weather station will be used on a UMB bus The altitude above mean sea level must be configured if the weather station is used outside an AWOS where the value can be configured in the AWOS software The declination is not factory programmed Declination must be configured if the weather station is used outside an AWOS where the value can be configured in the AWOS software Declination must be taken into consideration if the compass functionality 18 used to identify a north benchmark The UMB Configuration tool is used to configure the weather stations The latest version of the UMB Configuration tool is available from the following site Always use the latest version http lufft com dateianzeige php Dateiname download software UMB Config 25 21 The following list maps the 9620 Series of Compact Weather Stations to the sensor nomenclature used by the UMB Configuration tool Model UMB Configuration Tool Name
15. Model 9620 Series Compact Weather Stations User s Manual Rev A allweatherinc All Weather Inc 1165 National Drive Sacramento 95834 USA 800 824 5873 www allweatherinc com Copyright 2015 Weather Inc Rights Reserved The information contained herein is proprietary and is provided solely for the purpose of allowing customers to operate and or service All Weather Inc manufactured equipment and is not to be released reproduced or used for any other purpose without written permission of All Weather Inc Throughout this manual trademarked names might be used Rather than put a trademark symbol in every occurrence of a trademarked name we state herein that we are using the names only in an editorial fashion and to the benefit of the trademark owner and with no intention of infringement All Weather Inc and the All Weather Inc logo are trademarks of All Weather Inc Disclaimer The information and specifications described in this manual are subject to change without notice Latest Manual Version the latest version of this manual see the User Manuals page under Support on our Web site at www allweatherinc com alweatherinc All Weather Inc 1165 National Drive Sacramento CA 95834 Tel 916 928 1000 Fax 916 928 1165 Contact Customer Service Phone support is available from 8 00am 4 30pm PT Monday through Friday Call 916 928 1000 and ask for Service
16. NS There is an 8 pole screw connector on the bottom side of the weather station as shown in Figure 9 This serves to provide the supply voltage and serial interface by way of the supplied connection cable Figure 9 Sensor Electrical Connections Pin Color Function 1 White Power Supply GND 2 Brown Power Supply 3 Green RS 485 D 4 Yellow RS 485 D 7 Blue Heater GND 8 Red Heater 9620 Series Compact Weather Stations User s Manual 3 5 1 Summary of Signal and Power Wiring Connections Table 2 provides the serial connections for the default half duplex RS 485 serial communication option The Model 2715 Universal Power and Communication Module may also be configured to provide RS 232 or full duplex RS 485 signals at Serial Output 1 The Model 2715 Universal Power and Communication Module User s Manual describes these wiring options and explains how to install the required firmware to support these options Table 2 Model 9620 Series Compact Weather Station Signal and Power Wiring 55924895 ORES EAS z 180 00888008 80008800 FROM T SENSOR HEAD COMPUTER Serial Output 2 Pin Function Color BROWN 1 24V DC RED 5 PGND WHITE BLUE 3 RS 485 D YELLOW 4 RS 485 0 GREEN Serial Output 1 Pin Function Color s Any colors may be used as long 4 RS485 D they match the signals on each e
17. asurement is not always100 In normal operation the weather station should always transmit 90 100 Values up to 50 do not represent a general problem When the error value 55h 85d is transmitted this value is 0 If the weather station always transmits values below 50 this may mean that there is a fault Weather station transmits error value 24h 36d A channel is being polled that is not available on this model Weather station transmits error value 28h 40d The weather station is in the initialization phase following startup the weather station will deliver measurements after approx 10 seconds Weather station transmits error value 50h 80d The weather station is being operated above the limit of the specified measuring range Weather station transmits error value 51h 81d The weather station is being operated below the limit of the specified measuring range Weather station transmits error value 55h 85d during wind measurement The weather station is unable to execute a valid measurement because of ambient conditions This may be happen for the following reasons The weather station is being operated well above the limit of the specified measuring range Very strong horizontal rain or snow The ultrasonic transducers are very dirty clean the transducers The ultrasonic transducers are iced over check that heating mode is on and check the heating connection There are forei
18. at there is a pipe between each topic that is being polled See the notes below Table 8 for more information about Topic 1301 The response to the poll will be a string formatted according to the response formats specified for the topics PWRaaTOPIC 110 xxx xx 120 xxx 130 xxx xx 150 xx 11174 xxx xx lt EOF gt lt CRC gt lt CR gt lt LF gt where EOF is the end of file marker The CRC is a 4 character CRC that is calculated as explained later in this chapter The specific topics are explained in the tables below Table 3 Ultrasonic Wind Sensor Poll Topics Models 9620 9623 9624 9626 Instant wind speed Instant wind direction 11 9620 Series Compact Weather Stations User s Manual Table 4 Temperature Relative Humidity Poll Topics Models 9621 9622 9623 9624 9625 9626 Instant temperature C 230 Instant dew point C 21 Instant relative humidity 250 Alarm byte Table 5 Barometric Pressure Sensor Poll Topics Models 9621 9622 9623 9624 9625 9626 Pressure inHg Table 6 Precipitation Poll Topics Models 9622 9624 612 Precipitation ID 621 Accumulation mm h Table 7 Analog Topics Models 9625 9626 1174 Solar radiation W m Table 8 Ancillary Topics 1385 Mode 9620 Series Status Word 12 9620 Series Compact Weather Stations 4 1 2 Check Sum Calculation The CRC is calculated using a standard crc 16 formula The algorithm is as follows CRC rout
19. cordance with regulations The following sections provide siting guidelines for each sensor model SUGGESTION Take a picture at the installation site in each direction north east south and west to record the topography and obstructions for future reference 3 1 1 Wind Speed Direction Models 9620 9623 9624 9626 Buildings bridges and trees may corrupt the wind measurement Equally passing traffic may cause gusts that may influence the wind measurement e standard exposure of wind instruments over level open terrain is 10 m above the ground Open terrain is defined as an area where the distance between the sensor and any obstruction is at least 10 times the height of the obstruction Figure 2 shows the minimum siting considerations height above ground distance from obstructions and roads for a weather station monitoring wind speed direction Sensor Tree bush etc Min 4 5 m Min 5 m Road carriageway Figure 2 Minimum Siting Considerations for Wind Speed Direction 9620 Series Compact Weather Stations User s Manual 3 1 2 Compass Models 9620 9623 9624 9626 An aluminum or other nonferrous mast is recommended for mounting a weather station with a compass 3 1 3 Radar Precipitation Measurement Models 9622 and 9624 Pay attention to the following points when selecting the installation location for a weather station with radar precipitation measurement e Installation at the top of the
20. er Inc Model 1191 I Data Collection Platform or Model 2715 Universal Power and Communication Module Both All Weather Inc units provide a power communication and data aggregation capability to allow the 9620 Series of Compact Weather Stations to be used an automated weather observation system 1 1 MODELS The following models are available Weather Parameter Temp 6 C Solar Humidity eae tation apes ompass nadiation Direction 9620 X X 9621 X X 9622 X X X 9623 X X X X 9624 X X X X X 9625 X X X 9626 X X X X X 1 2 ACCESSORIES The following accessories and replacement parts are available for the 9620 Series of Compact Weather Stations Part Number Description M488628 00 Tower Crossarm Mounting Kit 9620 Series Compact Weather Stations User s Manual 2 THEORY OF OPERATION Each weather parameter is measured using a technology that is suited to measuring that parameter and has become well established measuring that parameter in standalone systems 9620 Series models that measure precipitation or wind speed direction are heated for operation in freezing conditions The measured values are sent over an RS 485 interface in accordance with UMB protocol The Weather Station is polled once a second and sends the weather data in response to the poll Figure 1 shows the possible Compact Weather Station sensors 4 4 lt
21. erage temperature and average wind speed Units C F UMB Channel Measurement Variable Measuring Range min max avg float 32 min max Unit 111 Wind Chill Temperature 60 0 70 0 C 116 Wind Chill Temperature 76 0 158 0 F 5 4 HUMIDITY Sampling rate 1 minute Generation of average value 1 10 minutes Units RH g m g kg UMB Channel min Measurement Variable float 32 Measuring Range min max Unit 200 220 240 260 Relative Humidity 0 0 100 0 205 225 245 265 Absolute Humidity 0 0 1000 0 g m 210 230 250 270 Mixing Ratio 0 0 1000 0 g kg 16 9620 Series Compact Weather Stations User s Manual 5 5 AIR PRESSURE Sampling rate 1 minute Generation of average value 1 10 minutes Unit hPa UMB Channel Measurement Variable Measuring Range act min max avg float 32 min max Unit 300 320 340 360 Absolute Air Pressure 300 1200 hPa 305 325 345 365 Relative Air Pressure 300 1200 hPa Note that the height of the weather station above mean sea level must be provided in order for the relative air pressure to be calculated correctly The factory setting is 0 m This is done automatically by an AWOS where the height of the weather station above mean sea level is entered in the AWOS configuration See for 5 6 WET BULB TEMPERATURE Sampling rate 1 minute Generation of average value 1 10
22. g plate at the end of the crossarm 5 Tighten all the mounting nuts except for weather stations measuring wind speed direction Models 9620 9623 9624 9626 Figure 5 Mounting Brace Detail Figure 6 Mount the Weather Station 9620 Series Compact Weather Stations User s Manual 3 3 NORTH ALIGNMENT In order for wind direction to display correctly on weather stations with wind speed direction Models 9620 9623 9624 9626 without a compass corrected system the weather station must be aligned to the North The weather station has a number of directional arrows for this purpose as shown in Figure 7 Figure 7 North Alignment Markings 1 If the weather station is already secured first loosen both nuts evenly until you can turn the weather station easily 2 Use the compass Models 9620 9623 9624 9626 to identify North and fix a benchmark on the horizon Note that this alignment with magnetic north by the compass differs from true north 3 Position the weather station in such a way that the South and North transducers are aligned with the fixed point of reference in the North see Figure 8 North reference Figure 8 Correct Magnetic North Alignment 9620 Series Compact Weather Stations User s Manual 3 4 DEFAULT CONFIGURATION Table 1 Default Configuration Baud Rate 19200 bps RS 485 Binary Calculation Interval 10 measurements Elevation Above MSL 0m 3 5 ELECTRICAL CONNECTIO
23. gn objects within the measuring section of the ultrasonic transducers One of the ultrasonic transducers is faulty return the weather station to All Weather Inc for repair Weather station transmits an error value not listed Contact All Weather Inc 25 9620 Series Compact Weather Stations User s Manual 9 SPECIFICATIONS Parameter Specification Air Temperature Measurement Principle NTC thermistor Measurement Range 50 C to 60 C Resolution 0 1 C 20 C to 50 C otherwise 0 2 C Accuracy 0 2 C 20 C to 50 C otherwise 0 5 C gt 30 C Measurement Principle Capacitive Measurement Range 0 100 Resolution 0 1 Accuracy 2 Measurement Principle MEMS capacitive Measurement Range 300 1200 hPa Resolution 0 1 hPa Accuracy 0 5 hPa 0 C to 40 C Measurement Principle Ultrasonic Measurement Range 0 75 m s Resolution 0 1 m s Accuracy 0 3 m 3 0 to 35 m s 5 lt 35 m s Response Threshold 0 3 m s Measurement Principle Ultrasonic Measurement Range 0 359 9 Resolution 0 1 m s Accuracy 3 lt 1 m s RMSE Response Threshold 0 3 m s 26 9620 Series Compact Weather Stations Parameter Compass Measurement Principle Specification Integrated electronic compass User s Manual Measurement Range 0 359 Resolution 1 0 Accuracy 10 Measurement Principle Doppler radar Mea
24. ine used with AWOS remote sensors unsigned int 16 string USE m cre where crcl6 buffer length initial value crc is the returned value buffer is the data buffer to compute a crc length is the number of bytes in buffer to process User s Manual initial value is the results of previous crc calculations that will allow the buffer crc to be computed in stages if necessary then set initial value to 0 unsigned int length buffer address to compute a crc number of characters to process initial value of crc static unsigned int crc static unsigned int crc vals 0x0000 0 0 1 0 181 0 lt 7 CRC values for 02016 routine x0140 0xc301 0 If this is not necessary unsigned int ival 03 0 0 0280 0 241 0xc601 0x06c0 0x0780 0xc741 0x0500 0xc5c1 0xc481 0x0440 0xcc01 0 0x0a00 0 x0cc0 0x0d80 0 1 0 581 0 xcd41 0x0f00 0 x0b40 0xc901 0 xcfcl 0xce81 0 x09c0 0x0880 0 x0e40 xc841 0xd801 0x18c0 0x1980 0xd941 0x1500 0xdbc1 0xda81 0x1a40 0x1e00 0 xdecl 0xdf81 0 0 01 0 540 1 xldc0 0x1c80 0 xdc41 0x1400 0xd4c1 0xd581 0x1540 0xd701 0x17c0 0x1680 0xd641 0xd201 0 Oxf001 0 x12c0 0x1380 0 x30c0 0x3180 0 xd341 0x1100 0 xf141 0x3300 0 1 1 0 081 0 xf3cl 0xf281 0 x1040 x3240 0x3600 0xf6c1 0xf781 0x3740 0xf501 0x35c0 0x3480 0xf441 0x3c00
25. mast e Installation height at least 4 5 m above the ground Distance to road carriageway at least 10 m e Distance from moving objects e g trees bushes and even bridges at least 10 m at the height of the sensor Falling or moving objects even falling leaves or leaves blowing in the wind may cause false measurements and or precipitation types Strong winds can influence the accuracy of the precipitation measurements When selecting the installation location take care to position the weather station at a suitable distance from other systems incorporating 24 GHz radar such as traffic counting devices on overhead gantry signs Otherwise cross effects and system malfunctions may occur In the final analysis the distance to other measuring systems also depends on their range of coverage and signal strength 3 1 4 Global Radiation Measurement Models 9625 and 9626 Pay attention to the following points when selecting the installation location for a weather station with a pyranometer e Installation at the top of the mast e Shadow free location if possible 360 free view to the horizon at the height of the pyranometer e Distance to shadow casting objects trees buildings at least 10 times of the object height relative to the pyranometer 9620 Series Compact Weather Stations User s Manual 3 2 MECHANICAL INSTALLATION There are two installation options for the 9620 Series of Compact Weather Stations e U bolt mounting bracket to
26. mast included e Crossarm to tower optional accessory For the mast option the sensor base is designed to be installed on the top of a mast with a diameter of 60 to 76 mm using a mounting bracket 1 Loosen nuts 2 Push the sensor from above onto the top of the mast 3 Tighten the nuts evenly until contact is made with the springs but the sensor can still be moved easily 4 For weather stations measuring wind speed direction align the sensor to the North 5 Tighten both nuts with 3 complete turns Figure 3 illustrates the installation of the weather station on a mast Springs Nuts with washers Mounting bracket Figure 3 Install Compact Weather Station on Mast 9620 Series Compact Weather Stations User s Manual For the tower crossarm option the sensor base is attached to a mounting bracket on the crossarm Position the crossarm next to the tower where the crossarm will be mounted E mm M Figure 4 Position Crossarm for Mounting 2 Each of the two mounting braces has independent mounts so that the brace can be attached to the tower independently of positioning the crossarms in the braces Use a carpenter s level to keep the crossarm as level as possible while securing each brace to a tower leg 3 Position the crossarm in the brace so that the area where the weather station will be mounted is at the desired distance from the tower 4 Position the weather station on the mountin
27. measure precipitation The sensor works with a 24 GHz Doppler radar that measures the drop speed and calculates the precipitation quantity and type by correlating the drop size and speed Note that this method of measuring precipitation has not been approved by aviation authorities in some countries 2 4 WIND Wind speed and direction are derived using measurements from four ultrasonic transducers The transducers are located at 90 intervals and are oriented north south and east west The transducers emit sound waves that are detected by the opposite transducers and wind affects the travel times of the sound waves This information can then be used to calculate the vector components of the wind speed and the wind direction relative to true north 2 4 1 Compass The integrated electronic compass is used to check the north south adjustment of the sensor housing for wind direction measurements It is also used to calculate the compass corrected wind direction wind direction relative to magnetic north 2 5 GLOBAL RADIATION Global radiation is measured by a pyranometer mounted in the top cover of the Compact Weather Station 9620 Series Compact Weather Stations User s Manual 3 INSTALLATION 3 1 SELECTING THE INSTALLATION LOCATION Pay attention to the following points when selecting the installation location e Stable subsurface for installing the mast foundation Reliable power supply e The mast and the sensor must be grounded in ac
28. nd 5 GROUND of the connection DC Power Pin Function Color 5 Battery RED 6 Battery BLACK AC Pin Function Color 1 HOT BLACK 2 NEUTRAL WHITE 3 GROUND GREEN SERIAL BATTERY AC 1 namo LINE NEUTRAL GND 10 9620 Series Compact Weather Stations User s Manual 4 OPERATION WITH AN AWOS 4 1 SENSOR REPORTS The 9620 Series of Compact Weather Stations is a polled sensor and the sensor responds when it is polled by the computer The Model 2715 Universal Power and Communication Module UPCM supplies power to the weather station and provides a communication interface with the data processing computer The communication interface can be either serial or TCP IP Data transfer across the serial interface between the UPCM and the computer is implemented by default via a serial ASCII encoded half duplex 4800 bps 8 N 1 This allows for the data to go on the data bus for the Data Collection Platform 4 1 1 Topic Based Sensor Poll Commands These Topic based poll commands from the data processing computer are used to poll sensors connected to the UPCM A Topic based poll command has the following format PWRaaTOPIC 110 120 130 150 1174 lt CRC gt lt CR gt lt LF gt where aa is the address of the sensor or the sensor location This address is often 00 The topics being polled are then listed based on the specific weather station model connected to the UPCM and the specific topics that are to be polled Note th
29. on will only be activated after the related UMB channel has been requested for the first time 5 1 4 Vectorial Average Value vct Wind measurements are calculated as vectors The average values of the vectors vct are generated internally This allows a value to be calculated for the magnitude wind speed and the angle wind direction of the calculated vector The calculation interval for the minimum maximum and average values is set at 10 minutes If necessary this can be adjusted The evaluation of the standard deviation values is deactivated after power on of the weather station The function will be activated with the first request to any of the standard deviation channels To get standard deviation values of the first integration period after power on a dummy request to any one of the standard deviation channels should be inserted 15 9620 Series Compact Weather Stations 5 2 AIR AND DEW POINT TEMPERATURE Sampling rate 1 minute Generation of average value 1 10 minutes Units C F UMB Channel Measurement Variable User s Manual Measuring Range min max float 32 min max Unit 100 120 140 160 Air Temperature 50 0 60 0 C 105 125 145 165 Air Temperature 58 0 140 0 110 130 150 170 Dew Point Temperature 50 0 60 0 C 115 135 155 175 Dew Point Temperature 58 0 140 0 F 5 3 WIND CHILL TEMPERATURE Sampling rate 1 minute computed on base of the av
30. surement Range drop size 0 3 5 0 mm Liquid Precipitation Resolution 0 01 mm Precipitation Types Rain snow Repeatability gt 90 Response Threshold 0 002 mm Precipitation Intensity Global Radiation Measurement Principle 0 200 mm h sampling rate 1 min Thermopile pyranometer Measurement Range 0 0 1400 0 W m up to 80 with 1000 W m2 beam Resolution 1 W m Response Time 95 18s Non stability change year lt 1 Non linearity 0 to 1000 W m lt 1 Directional Response lt 20 Wim Temperature Dependence of Sensitivity lt 5 10 to 40 C Tilt Error at 1000 W m lt 1 Spectral Range 300 2800 nm Operating Temperature 50 to 60 C Storage Temperature 50 to 70 C Relative Humidity 0 100 noncondensing 9620 Series Compact Weather Stations User s Manual Parameter Specification Serial Data Serial Output Baud Rate Serial Port Parameter Setting RS 485 half duplex 1200 2400 4800 9600 14400 192003 28800 57600 bps 8 N 1 8 data bits no parity 1 stop bit Power Requirements Supply Voltage 24 V DC 6 up to 160 mA Heating 24 V DC upto 1 7 A Housing Plastic Ingress Protection Rating IP66 Mounting Crossarm Specification Parameter 9621 9623 155 mm 155 mm 155 mm 155 mm 155 mm 155 mm 155 mm Dimensions diameter x diameter x diameter x diameter x diameter x diame
31. ter x diameter 194mmH 223mmH 279mmH 287 343mmH 268mmH 332 mm H Weight 0 8 kg 1 0 kg 1 3 kg 1 2 kg 1 5 kg 1 3 kg 1 5 kg 28 9620 Series Compact Weather Stations User s Manual 10 WARRANTY Any defect in design materials or workmanship which may occur during proper and normal use during a period of 1 year from date of installation or a maximum of 2 years from shipment will be corrected by repair or replacement by All Weather Inc 29 allweatherinc Weather Inc 1165 National Drive Sacramento CA 95818 Fax 916 928 1165 Phone 916 928 1000 Toll Free 800 824 5873 9620 001 Revision A July 2015
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