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48 

9.1.2.5.3. 

NMEA Checksum „CS“ 

The checksum „CS“ will be displayed as 2-character-hexadecimal value. It is calculated as a XOR op-

eration of all signs of the data set between “$” and “*”. This means “$” and “*” will not enter into the cal-

culation. 

<CR>...carriage return (hex0D), 

<LF>... linefeed (hex 0A) 

9.2.  Protocol rain[e] 

The rain[e] uses in connection with the met[LOG] two protocols: 

 

Talker-Protocol 

 

SDI-12 on RS485 

9.2.1.  Talker-Protocol rain[e] 

Is the talker-protocol activated the rain[e] sends via the RS485 interface an ASCII-string in a with the 

rain[e] commander adjustable time interval between 10 and 60 s (standard setting=10 seconds) (see 

also rain[e] manual).  

 

In the sent ASCII-string are located the measuring values: 

 

Intensity in mm/min 

 

Total quantity in mm 

 

Status of the heating (1 = ON, 0 = OFF) 

 

Internal housing temperature in °C 

 

System status 

9.2.2.  SDI-12 on RS485 – rain[e] 

Alternatively, the communication with the rain[e] can take place via SDI-12 commands. The communi-

cation with the help of the SDI-12 protocol takes place deviating from the „SDI-12 A Serial- Digital In-

terface Standard for Microprocessor-Based Sensors, Version 1.3, 2012“ via the  RS485-interface. 

With this protocol the following measuring values and data can be called of via the met[LOG]:  

  Precipitation intensity of the last-minute mm/min 

  Precipitation amount since the last call off mm/m² 

  Temperature interior °C 

  Heating ON (1) / OFF (0) 

  Total heating capacity % 

  Error states: 

o

  Error exceedance of 10 °C at heating ON 

0 or 1 

o

  Error heating   

 

 

 

0 or 1 

o

  Error temperature sensors in the interior  

0 or 1 

o

  Error temperature sensor at the funnel   

0 or 1 

9.3.  Analogue Sensors 

For the connection of the analogue sensors are 4 analogue inputs available. The input can measure 

0…10 V with 12 bit (16bit ADU). Additionally, the input can be used as digital input. Basically, it is pos-

sible to connect the sensors with an active status signal (voltage). It is also possible to connect sen-

sors with an open collector (OC) or a switch contact (relay) for which, depending on the configuration, 

the supply voltage can be switched as a “switching voltage” on the digital inputs. 

Moreover, the met[LOG] has got the possibility to measure temperatures with the help of a NTC.  

9.3.1.  Sensors with voltage output 

The sensors with voltage output will be measured and stored according to their scaling. 

9.3.2.  Sensors with a status output 

Sensors with a status output can be e.g. a rain detector (rain yes/no) or a sunshine duration sensor 

(sun yes/no). 

Normally the sensors deliver the status as an OC, a switch contact and/or as an active voltage signal 

(e.g. no (0) = 0 V and yes (1) = 5 V) (the thresholds can be configured correspondingly).  

Содержание LAMBECHT METEO 00.95800.010000

Страница 1: ...erfaces 4 analogue digital inter faces and connection to LAN Ethernet The met LOG has an integrated web server which allows for calling and displaying data directly via a browser Warnings and alarms c...

Страница 2: ...play of wind peak and maximum gust o Calculation and display of heat index humidex or wind chill o Calculation of dew point o Calculation of absolute air humidity o Altitude correction of air pressure...

Страница 3: ...following LAMBRECHT sensors with voltage frequency impulse and status output can be connected The voltage output can be configured from 0 10 V and displayed with 16Bit ap prox 0 15 V Analogue sensors...

Страница 4: ...altitude corrected 35 3 4 2 3 7 Air pressure above sea level QNH 35 3 4 2 3 8 Air pressure above sea level QFF 35 3 4 2 3 9 Sunshine duration day 35 3 4 2 3 10 Duration of precipitation day 35 3 4 2 3...

Страница 5: ...by HTTP 51 12 1 Identification of the logger 51 12 2 Access to the instantaneous values 52 12 3 Access to sliding wind data 53 12 4 Storage format 54 12 4 1 Formulas Calculations 55 12 4 2 Annex formu...

Страница 6: ...s additional connecting terminals to plug in the serial and analogue meteorological sensors of LAMBRECHT meteo Mounting on the profile rail The met LOG can be fastened on the profile rail of the power...

Страница 7: ...y An alternative IP address can be chosen by using a special configuration Connecting to power supply The dot cycle on the front side points in the direction of terminal 1 The met LOG can be supplied...

Страница 8: ...l Please read the appropriate sensor manual prior to operation with met LOG Remark Please note that the RS485 interfaces of met LOG are not decoupled isolated In case of disruptions a suitable galvani...

Страница 9: ...9 Wiring diagram EOLOS...

Страница 10: ...10 Wiring diagram ARCO Modbus...

Страница 11: ...11 Wiring diagram rain e Modbus...

Страница 12: ...us ARCO Modbus rain e Modbus The use of the met LOG in combination with the power cube is enabled by mounting the data logger on a DIN profile rail inside the power cube The following pictures show co...

Страница 13: ...13 Connection example with power cube met LOG EOLOS Modbus rain e Modbus...

Страница 14: ...14 Connection example with power cube met LOG u sonic...

Страница 15: ...the general settings of the met LOG any time Alternatively configuration of the sensors can also be done manually 1 4 Calling the integrated web page The met LOG has an integrated web page With the w...

Страница 16: ...le name In this case the configuration file is not read If there is a password set it should be added to the SD card before accepting the configuration Please use the following command method POST pat...

Страница 17: ...available for about 10 seconds After 10 seconds the met LOG web page can be displayed again In case of not storing a configuration it will be deleted with the very first change of a web page 3 1 Gener...

Страница 18: ...here Activate Access Protection To avoid non authorized modification of the configuration a password protected access protection can be activated The met LOG has no user management Therefore one user...

Страница 19: ...ual time registration time source manually has to be chosen and to be stored After day month year hour 24 hours and minute have been set they can be taken over by the met LOG by pressing the button ac...

Страница 20: ...tion in mm since the device has been switched on From the total amount the met LOG calculates the amount of precipitation in mm for each storage interval 3 2 3 Configuration of the rain e SDI 12 on RS...

Страница 21: ...ts Analogue digital inputs allows for selection of analogue sensors with a voltage output digital sensors with frequency impulse or status output or NTC temperature sensor Apart from the signal type a...

Страница 22: ...maximum of 3 per second 3 Hz Status Using digital signals it can be adjusted whether there is an active signal with low or high level or a passive signal e g relay or OC At an active signal the volta...

Страница 23: ...the power supply in the met LOG will be interconnected as a switching voltage Frequency At the frequency the frequency range min max and the scaling can be adjusted It is possible to choose an active...

Страница 24: ...24 NTC temperature sensor Temperature measurement with the NTC temperature sensor is possible For the NTC the R0 re sistance value is in kOhm and its B value has to be inserted...

Страница 25: ...ers in the log list will be stored according to the adjusted storage interval as mean value minimum value and maximum value please see chapter 10 If available virtual parameters from the list of the v...

Страница 26: ...d and the number of the decimal places can be adjusted in the log list The unit can be assigned freely For future evaluations e g with the MeteoWare CS we recommend to use the units according to the f...

Страница 27: ...o the right In the open window the name of the group has to be entered Subsequently can be chosen whether in this group an actual value or a virtual value has to be dis played After pressing actual va...

Страница 28: ...h or numerical box For the wind measuring values the wind indicators will be shown choosing graph Finally by pressing the button create the group with the chosen indicating instrument will be gener at...

Страница 29: ...e trend calculation can be adjusted 10 minutes 30 minutes 1 hour and 3 hours When the trend is deactivated trend OFF it will not be shown in the corresponding dis play 3 4 2 Indicating elements The me...

Страница 30: ...the minimum wind speed The inner circle indicates the numerical wind speed 3 4 2 2 Indicating instrument wind direction The instrument wind direction displays the current wind direction long yellow h...

Страница 31: ...indicator The numerical indicator displays the respective current value In addition to the measured actual values virtual values can be indicated These virtual measured val ues can also be stored Calc...

Страница 32: ...nked vectorially and for the dis play counted back again The time frame for which the peak wind speed has to be determined is adjustable in a range from 1 to 10 minutes This is a sliding time frame wh...

Страница 33: ...The reference lull can be the one before or after the gust Example of a maximum gust wind speed Maximale B e time 3 4 2 3 3 Heat index Humidex or wind chill For the calculation of the heat index and h...

Страница 34: ...es the difference between the measured air temperature and the felt temperature depending on the wind speed It is defined for temperatures below approx 10 C The lamp of the display field will be color...

Страница 35: ...e can be corrected to sea level For the simple correction according to QNH the ICAO standard atmosphere is used The only requirement is to insert the to be considered height of the air pressure sensor...

Страница 36: ...heric pressure the same as three hours ago Decreasing or steady then increasing or increasing then increasing more rapidly atmospheric pressure now higher than three hours ago Decreasing then steady o...

Страница 37: ...34 5 Auto configuration Pressing the button behind the front panel of the met LOG the met LOG turns into a auto configura tion mode In the first part e g 30 seconds of the auto configuration the met L...

Страница 38: ...0 0 G 10 Min Vectorial connec tion with wind di rection in the same protocol Wind chill with temperature on the same COM in terface Wind direction 0 R 10 Min Vectorial connec tion with wind speed in t...

Страница 39: ...The used units decimal places and sensor types are listed in the following table Protocol Parameter Unit Decimal place Sensor type rain e Talker Intensity of precipitation mm min 0 000 N Amount of pre...

Страница 40: ...ities of a warning channel In total 8 warning channels can be configured The warning channels can be connected logically with each other Therewith also wind direction de pending on warnings can be rea...

Страница 41: ...ektor Low Pegel 60 High Pegel 30 0 360 30 60 Warnsektor Alternatively the in the example portrayed inverting can also be realized via the switch inverted logic With the switch hysteresis function the...

Страница 42: ...g chan nel which can be selected in the selection series warning channel 1 8 The switch has got 3 states AND on click OR two clicks or OFF three clicks In case of choosing no warning channel the switc...

Страница 43: ...fied Therefore at each warning channel can be inserted test values see example illustration above Will the button logic test be pressed the logic calculation with the in the field test parameter inser...

Страница 44: ...is possible to choose timeframe and a day of the week for alerting in a warning channel Either can this date be connected directly with the to be monitored parameter or the time itself is the to be mo...

Страница 45: ...a an open collector o Active output level configurable e g logical 0 0 V and logical 1 5 V 9 1 NMEA protocol Following LAMBRECHT sensors are using the NMEA protocol as a talker EOLOS IND EOLOS MET WEN...

Страница 46: ...separator comma Header WIMWV Wind direction WD 0 0 to 360 0 R relative wind direction Wind speed WS 0 3 to 75 0 M metric unit in m s Status A valid V not valid Telegram end CR LF Error code WR 999 9...

Страница 47: ...onnected LAMBRECHT precipitation sensor Each impulse increases the value by 0 1 In case of increasing the value 10 the value will be reset to 0 1 The actual amount of precipitation is always the diffe...

Страница 48: ...of via the met LOG Precipitation intensity of the last minute mm min Precipitation amount since the last call off mm m Temperature interior C Heating ON 1 OFF 0 Total heating capacity Error states o...

Страница 49: ...l inputs can be activated Thereby the number of the permitted impulses per second is limited to a maximum of 3 per second 3Hz 9 3 4 2 Rain gauges with pulse output linearization Rain gauges with tippi...

Страница 50: ...d 360 but has to be calculated vectorially due to the full circle vectorial means value with unit vec tors Wind speed and wind direction vectorially connected For alternative measurements of wind spee...

Страница 51: ...Date hh mm ss yyyy mm dd Sensor name 1 Unit 1 Decimal places 1 Sensor type 1 Sensor name n Unit n Decimal places n Sensor type n Die fields are separated by a comma Following coding will be used for t...

Страница 52: ...uiv Content Type content text html charset iso 8859 1 TITLE momview TITLE HEAD BODY PRE 11 10 2011 17 03 39 01 00 227 0 4 8 14 0 9999 0 95 9 13 3 988 3 0 0 PRE BODY HTML As a block PRE PRE following d...

Страница 53: ...d direction mean value Wind direction start segment in clockwise direction Wind direction end segment in clockwise direction Sensor position in sequence out of statdef htm Wind speed mean value Wind s...

Страница 54: ...time zone Float measuring value 1 mean value or sum Float measuring value 1 Minimum Float measuring value 1 Maximum Word sensorID 1 Float measuring value n mean value or sum Float measuring value n M...

Страница 55: ...away from the heat Ozone levels can be elevated in this case Index 27 32 States of exhaustion are possible at longer duration and or physical activities avoid midday heat Index 32 41 Sunstrokes muscl...

Страница 56: ...1 12 4 6 Annex formula dew point The dew point DT is calculated as follows DT c3 ln 0 01 RH SVP TT c1 c2 ln 0 01 RH SVP TT c1 Thereby DT Dew point temperature in C RH relative humidity in SVP TT Satur...

Страница 57: ...ir pressure QFE corrected air pressure from the measuring point to the reference plane HF altitude difference to the measuring point in m T 273 15 K t with t air temperature in C Ch Constant 0 12 K hP...

Страница 58: ...Annex formula air pressure over sea level QFF The QFF calculation takes place under consideration of the real atmosphere at the measuring point QFF Bn 2 7182183 HB 0 03416356 T e Ch HB 0 00325 whereb...

Страница 59: ...es or electromagnetic fields which are beyond the standards and specifications in the technical data 3 Damages caused by improper handling e g by wrong tools incorrect installation incorrect electri c...

Страница 60: ...c 10 22 _________________________________________________________________________________ LAMBRECHT meteo GmbH Tel 49 0 551 4958 0 Friedl nder Weg 65 67 Fax 49 0 551 4958 312 37085 G ttingen E Mail in...

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