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10

LOW POWER OPERATING MODE
Operating condition

heater [OFF] and ventilator [OFF]

Zero offset a

5 W/m

2

Supply voltage range

5 to 30 VDC

Power consumption

< 0.1 W

CALIBRATION

Calibration traceability

to WRR

Calibration hierarchy

from WRR through ISO 9846 and ISO 9847, applying a
correction to reference conditions

Calibration method

indoor calibration according to ISO 9847, Type IIc

Calibration uncertainty

< 1.2 % (k = 2)

Recommended recalibration interval

2 years

Reference conditions

20 °C, normal incidence solar radiation, horizontal mounting,
irradiance level 1000 W/m

2

, heater and ventilator [ON]

Validity of calibration

based on experience the instrument sensitivity will not change
during storage. During use under exposure to solar radiation
the instrument “non-stability” specification is applicable.

MEASUREMENT ACCURACY AND RESOLUTION

Uncertainty of the measurement

statements about the overall measurement uncertainty can
only be made on an individual basis.

WMO estimate on achievable accuracy for
daily sums

2 %

WMO estimate on achievable accuracy for
hourly sums

3 %

Irradiance resolution

0.05 W/m

2

DIGITAL COMMUNICATION

Digital output

irradiance in W/m²

House keeping data

instrument body temperature in °C
instrument internal humidity in %r h
instrument internal pressure in Pa
instrument tilt angle in °
ventilator speed in RPM
ventilator current in A
heater current in A

Rated operating voltage range

8 to 30 VDC

Communication protocol

Modbus over 2-wire RS-485
half duplex

Transmission mode

RTU

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Содержание sun[e] 00.16130.501030

Страница 1: ...Manual sun e 00 16130 501030 Next level digital secondary standard pyranometer compliant with IEC 61724 1 2017 Class A ...

Страница 2: ...escribed in the manual 4 Always have the manual at hand at the installation site 5 Use the system within the specified operating condition Eliminate influences which might impair the safety 6 Prevent the ingress of unwanted liquids into the devices Please note the loss that unauthorised manipulation of the system shall result in the loss of warranty and non liability Changes to system components r...

Страница 3: ...wiring diagram 15 4 5 Grounding and use of the shield 15 4 6 Connecting to an RS 485 network 15 5 Communication with sun e 17 5 1 Modbus protocol 17 5 2 Data encoding 17 5 3 Device address 17 5 4 Standard configuration default 17 5 5 Modbus command set 18 5 6 Measured value and parameter register 18 5 7 Sensor parameters configuration parameters 19 5 8 Network communication getting started 20 5 9 ...

Страница 4: ...urement accuracy is required The sun e offers several advantages over competing pyranometers Heated for best data availability new RVHTM technology outperforms traditional pyranometer ventilation The first pyranometer compliant in its standard configuration with the requirements for Class A monitoring systems of the new IEC 61724 1 2017 standard Low cost of ownership remote diagnostics and support...

Страница 5: ...only 2 W power compared to 10 W for traditional ventilation systems reduction of unnecessary on site inspection by remote diagnostics designed for efficient servicing easy local diagnostics supported by an efficient calibration and maintenance organisation LAMBRECHT meteo and Hukseflux offers local support in the main global economies USA EU China India Japan and Brazil Recalibration is recommende...

Страница 6: ... including o calibration certificate o temperature response test report o directional response test report o tilt sensor test report any other options as ordered Please store the certificates in a safe place 1 3 Quick instrument check 1 At power ON the signal may have a temporary output level different from zero an offset Let this offset settle down it is a normal part of the power ON procedure 2 ...

Страница 7: ... e 1 cable standard length 5 metres optional longer cable 2 connector 3 sun screen 4 bubble level 5 bubble level window 6 outer dome 7 inner dome 8 thermal sensor with black coating 9 internal ventilation vents 10 quick release system of sun screen 11 instrument body 12 levelling feet sun e pyranometer employs a state of the art thermopile sensor with black coated surface two domes and an anodised...

Страница 8: ...ISO 9060 1990 secondary standard pyranometer WMO performance level WMO No 8 seventh edition 2008 high quality pyranometer Response time 95 3 s Zero offset a response to 200 W m2 net thermal radiation in standard operating mode in medium power mode in low power mode 2 W m2 2 W m2 5 W m2 Zero offset b response to 5 K h change in ambient temperature 2 W m2 Non stability 0 5 change per year Non linear...

Страница 9: ... sensor tilt angle Tilt measurement uncertainty 1 0 to 90 Tilt sensor detection limit 0 1 smallest meaningfully detectable change in a time interval of 10 min Tilt sensor characterisation of individual instrument report included Levelling see options bubble level and adjustable levelling feet are included Levelling accuracy 0 1 bubble entirely in ring Measurand sensor internal relative humidity Hu...

Страница 10: ...t sensitivity will not change during storage During use under exposure to solar radiation the instrument non stability specification is applicable MEASUREMENT ACCURACY AND RESOLUTION Uncertainty of the measurement statements about the overall measurement uncertainty can only be made on an individual basis WMO estimate on achievable accuracy for daily sums 2 WMO estimate on achievable accuracy for ...

Страница 11: ...11 3 2 Dimensions of sun e Figure 3 2 1 Dimensions of sun e in x 10 3 m 95 Ø 92 M6 Ø 68 46 M5 2x ...

Страница 12: ... a representative measurement The pyranometer measures the solar radiation in the plane of the sensor Some installations require a tilted or inverted position The sensor bottom plate parallel to the black sensor surface should be mounted parallel to the plane of interest in case a pyranometer is not mounted horizontally or in case the horizon is obstructed the representativeness of the location be...

Страница 13: ... screen The bottom of the handle can be pulled out gently Once the handle is pulled out and fully released as shown in the figure below the sun screen can be lifted off manually for removal Installing the sun screen pull out the bottom of the quick release system handle so it is fully released place the screen on sun e and once it is positioned properly press the handle of the quick release system...

Страница 14: ...ined mounting as an example The whole pattern for mounting the sun e is the same for all the sets mentioned above Figure 4 3 1 Mounting of sun e on Set for inclined mounting on traverse system 14627 1 sun e pyranometer 2 mounting plate for pyranometer 3 fixation for mounting on traverse system 14627 4 TORX M4 x 16 TX20 DIN 7985 TX A2 5 washer 4 3 DIN 125 A A2 6 washer 5 3 DIN 125 A A2 7 hexagon sc...

Страница 15: ...h the instrument body for instance in laboratory experiments the shield should be connected to the local ground at the cable end This is typically the ground or low voltage of the power supply or the common of the network In exceptional cases for instance when both the instrument and a datalogger are connected to a small size mast the local ground at the mounting platform is the same as the networ...

Страница 16: ...own resistor are required Typical values for both resistors are in the range from 650 to 850 Ω Figure 4 6 1 Connecting sun e to a typical RS 485 network not connected 8 to 30 VDC 8 to 30 VDC common data data RS 485 A A sun e wire white black blue grey brown RS 485 B B RS 485 network shield shield ...

Страница 17: ...16 Bits 0x1234 is transmitted in the order 0x12 0x34 Example big endian 32bit or 64bit Register size value 32 Bits 0x12345678 is transmitted in the order 0x12 0x34 0x56 0x78 5 3 Device address The addresses 1 247 are permitted for Modbus Warning Using the same Modbus address for more than one device will lead to irregular behaviour of the entire network 5 4 Standard configuration default Baud rate...

Страница 18: ...last retrieval W m 10 1 decimal INT 31501 Global radiation instantaneous values High WORD temperature compensated W m 100 2 decimal The register 31501 31502 should be read in one sequence function code 0x04 LONG 31502 Global radiation instantaneous values Low WORD temperature compensated 31591 Global radiation instantaneous values High WORD uncompensated W m 100 2 decimal The register 31591 31592 ...

Страница 19: ...ud rate The framing of the serial data transfer is 8 data bits even parity and 1 stop bit Default setting is 19200 baud Note The sensor needs to be restarted before changes become effective Table 5 7 2 Format of data FORMAT OF DATA DESCRIPTION uINT Unsigned 16 bit integer INT Signed 16 bit integer uLONG Unsigned 32 bit integer LONG Signed 32 bit integer The data format includes signed and unsigned...

Страница 20: ...quested in just one request sun e will not respond If requesting six or more registers multiple requests should be used sun e will respond as expected 5 9 Adapting the Modbus address and communication settings Setting the instrument address and baud rate can be done in different ways by connecting the sensor to the PC and using a Modbus testing tool There are links to different solutions available...

Страница 21: ... on clear windless nights due to zero offset a In case of use with PV systems compare daytime measurements to PV system output Look for any patterns and events that deviate from what is normal or expected 2 2 weeks cleaning use a soft cloth to clean the dome of the instrument persistent stains can be treated with soapy water or alcohol 3 6 months inspection inspect cable quality inspect connectors...

Страница 22: ...m pins to cable ends The electrical resistance should be 10 Ω In case of doubt try a new cable If all physical connections are correct and the sensor still cannot be found please contact the factory to send the sensor to the manufacturer for diagnosis and service sun e does not respond to a request for 6 or more registers It is not possible to request more than five 16 bit registers in one request...

Страница 23: ...range 30001 to 35000 apply to all Lambrecht sensors an address from this range is also representative of a measured value type For example register 30401 always contains the current value of the air temperature If this register address is not included in the list in register range 46001 to 49000 the connected Modbus sensor does not supply an air temperature If the auto configuration is started wit...

Страница 24: ...T 0x04 Big Endian WORD 31001 Precipitation amount total mm 10 1 decimal place INT 0x04 Big Endian WORD 31101 Precipitation amount total High WORD mm 1000 3 decimal places Registers 31101 31102 can only be read out together function code 0x04 LON G 0x04 Big Endian LONG 31102 Precipitation amount total Low WORD 0x04 31201 Precipitation intensity 1 minute sliding mm min 1000 average 1 min 3 decimal p...

Страница 25: ...alue since last retrieval INT 46004 31404 Register address 1 Global radiation minimum value since last retrieval INT 46005 31501 Register address 1 Global radiation instantaneous values High WORD temperature compensated INT 46006 31502 Register address 1 Global radiation instantaneous values Low WORD temperature compensated INT 46007 31591 Register address 1 Global radiation instantaneous values H...

Страница 26: ...rmity with the relevant sections and applicable requirements of the following standards Emission IEC EN 61000 6 1 Class B RF emission requirements IEC CISPR11 and EN 55011 Class B requirements Immunity IEC EN 61000 6 2 and IEC 61326 requirements Test date 2 January 2017 Subject to change without notice Manual_sun e 30 18 _____________________________________________________________________________...

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