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LPPYRA13

- 3 -

V2.3

INTRODUCTION

LPPYRA13 pyranometer measures the irradiance on a flat surface (W/m

). Thanks to

the shadow-ring, LPPYRA12 measures the diffuse solar radiation eliminating the con-

tribution of direct irradiance.
LPPYRA13 is equipped with a Spectrally Flat Class A (Secondary Standard) pyranome-

ter (LPPYRA10) in accordance with ISO 9060:2018 and with the criteria of the WMO

“Guide to Meteorological Instruments and Methods of Observation”.
The pyranometer is available in the following versions:

•

LPPYRA13:

PASSIVE

The passive version can be connected to the instruments

D09847 and HD31 by using VP 472 SICRAM module.

•

LPPYRA13AC:

ACTIVE with 4..20 mA CURRENT output

•

LP PYRA13AV: ACTIVE with 0..1 or 0..5 or 0..10 V VOLTAGE output to be de-

fined when ordering.

•

LPPYRA13S:

With RS485 Modbus-RTU output.

•

LPPYRA13S12: With SDI-12 output.

The pyranometer is supplied factory calibrated and with a calibration report. The cali-

bration is carried out in accordance with the ISO 9847:1992 (type IIc) standard: ”Cal-

ibration of field pyranometers by comparison to a reference pyranometer”. The pyra-

nometer is calibrated by comparison with the reference sample calibrated annually at

WRC (World Radiation Center).

Содержание Delta OHM LPPYRA13

Страница 1: ...Operating manual Pyranometer LPPYRA13 www deltaohm com English Keep for future reference Companies Brands of GHM...

Страница 2: ...ONS 13 4 3 LPPYRA13AV CONNECTIONS 13 4 4 LPPYRA13S CONNECTIONS 14 4 5 LPPYRA13S12 CONNECTIONS 15 5 MEASUREMENT IN THE MODELS WITH ANALOG OUTPUT 16 5 1 LPPYRA13 16 5 2 LPPYRA13AC 16 5 3 LPPYRA13AV 16 6...

Страница 3: ...rsions LPPYRA13 PASSIVE The passive version can be connected to the instruments D09847 and HD31 by using VP 472 SICRAM module LPPYRA13AC ACTIVE with 4 20 mA CURRENT output LP PYRA13AV ACTIVE with 0 1...

Страница 4: ...s greater than 99 8 Figure 2 1 shows the relative spectral sensi tivity of the LPPYRA13 pyranometer and a standard solar spectrum Fig 2 1 LPPYRA13 pyranometer relative spectral sensitivity blue line c...

Страница 5: ...he elevation of the sun changes day by day it is necessary to change the height of the shad ow ring at least every two days To prevent internal condensation forming on the internal side of the dome un...

Страница 6: ...a coin 3 Remove the cartridge perforated cap 4 Open the sachet containing silica gel supplied with the pyranometer 5 Fill the cartridge with the silica gel crystals 6 Close the cartridge with its own...

Страница 7: ...the levelling screws that allow adjusting the pyranometer inclination 3 1 MOUNTING THE SHADOW RING LPPYRA13 is made up of two parts the pyranometer and the shadow ring Fig 3 2 LPPYRA13 dimensions and...

Страница 8: ...steps first align the shadow ring along the North South axis and then adjust the ring tilt Fig 3 3 positioning the instrument Aligning the shadow ring along the North South axis 1 Wait for solar midd...

Страница 9: ...el to the ground Use the levelling device on the pyranometer body 5 If the operations have been carried out properly the shadow ring axis will be paral lel to the earth axis By now you just have to ad...

Страница 10: ...e set on the sliding bars mm if installed in the Southern hemisphere 23 26 21 12 101 121 22 10 1 3 12 96 116 20 21 1 22 11 87 107 18 29 1 13 11 77 97 16 5 2 6 11 68 88 14 11 2 31 10 58 78 12 17 2 25 1...

Страница 11: ...to be set on the sliding bars mm if installed in the Southern hemisphere 23 26 21 12 92 130 22 10 1 3 12 87 125 20 21 1 22 11 78 116 18 29 1 13 11 68 106 16 5 2 6 11 59 97 14 11 2 31 10 49 87 12 17 2...

Страница 12: ...sing to ground The wire of the cable corresponding to the housing depends on the model white wire in LPPYRA13 and LPPYRA13AC black wire cable shield in LPPYRA13S and LPPY RA13S12 In LPPYRA13AV the hou...

Страница 13: ...for 0 1 V and 0 5 V outputs 15 30 Vdc for 0 10 V output It is to be connected to a power sup ply and an instrument with voltage input as shown in fig 4 3 The load resistance of the instrument reading...

Страница 14: ...own 5 RS485 B White 6 Housing Shield Black 7 Not connected 8 Not connected Fig 4 4 LPPYRA13S connections Before connecting the pyranometer to the RS485 network set the address and the communication pa...

Страница 15: ...ions More SDI 12 sensors can be connected in parallel The distance between a sensor and the acquisition system data logger should not exceed 60 m Due to its low power consumption 200 A LPPYRA13S12 is...

Страница 16: ...e The irradiance Ee is obtained by measuring with a multimeter the current Iout absorbed by the sensor and applying the following formula Ee 125 Iout 4 if f s 2000 W m2 Ee 250 Iout 4 if f s 4000 W m2...

Страница 17: ...y to install the related USB drivers in the PC NOTES ON THE INSTALLATION OF UNSIGNED USB DRIVER before installing unsigned USB driver into operating systems starting from Windows 7 it is necessary to...

Страница 18: ...bits no parity 2 stop bits n 2 8 E 1 8 data bits even parity 1 stop bit n 3 8 E 2 8 data bits even parity 2 stop bits n 4 8 O 1 8 data bits odd parity 1 stop bit n 5 8 O 2 8 data bits odd parity 2 sto...

Страница 19: ...rement error bit2 1 configuration data error bit3 1 program memory error 16 bit Integer 5 4 Average values of the last 4 measurements 16 bit Integer 6 5 Signal generated by the sensor in V 10 e g 816...

Страница 20: ...ing table The following table reports the SDI 12 commands available For consistency with SDI 12 standard documentation the instrument address is indicated in the table with the letter a SDI 12 Command...

Страница 21: ...s present otherwise the fixed value 25 C Example of response 0 0 228 7 3 294 25 0 probe address 0 content of the status register 0 irradiance 228 7 W m2 signal internal level 3 294 mV internal tempera...

Страница 22: ...of detected variables 1 character for aM3 2 characters for aC3 Note ttt 000 means datum immediately available Request to execute the measurement aD0 a v v CR LF with v v signal internal level in mV E...

Страница 23: ...the temperature sensor is present To change the unit of measurement 1 Send the command aXSCAL USER ON note a instrument address 2 Send the command aXSCFD to set C or aXSCFE to set F 3 Send the command...

Страница 24: ...ion intercepted by the shadow ring changes during the year because the position that the ring has with respect to the pyranometer changes In tables 2 and 3 there are the correction factors to be appli...

Страница 25: ...11 1 11 1 12 1 12 1 12 1 13 1 13 1 13 1 12 1 12 20 1 10 1 11 1 11 1 12 1 12 1 12 1 12 1 12 1 12 1 12 22 1 10 1 10 1 11 1 11 1 11 1 12 1 12 1 12 1 12 1 12 23 1 09 1 10 1 10 1 11 1 11 1 11 1 12 1 12 1...

Страница 26: ...11 1 11 1 12 1 12 1 12 1 13 1 13 1 13 1 12 1 12 20 1 10 1 11 1 11 1 12 1 12 1 12 1 12 1 12 1 12 1 12 22 1 10 1 10 1 11 1 11 1 11 1 12 1 12 1 12 1 12 1 12 23 1 09 1 10 1 10 1 11 1 11 1 11 1 12 1 12 1...

Страница 27: ...this case the performed reading is highly over estimated To minimize the condensation the pyranometer is provided with a cartridge containing dessicant material silica gel The efficiency of the silic...

Страница 28: ...V output 5 30 Vdc LPPYRA13S 7 30 Vdc LPPYRA13S12 Consumption 200 A for the version LPPYRA13S12 Connection 4 pole M12 connector LPPYRA13 LPPYRA13AC and LPPYRA13AV 8 pole M12 connector LPPYRA13S and LPP...

Страница 29: ...well as the specific measures described in this manual are followed The instrument proper operation and operating safety can be ensured only in the cli matic conditions specified in this manual Do not...

Страница 30: ...ing to 0 2000 W m2 ordering code LPPYRA13AV or 0 4000 W m2 ordering code LPPYRA13AV4 Power supply 10 30 Vdc for the versions with output 0 1 Vdc and 0 5 Vdc 15 30 Vdc for the ver sion with output 0 10...

Страница 31: ...pyranometers With built in RS485 USB converter 8 pole M12 connector on instrument side and A type USB connector on PC side LPSG Cartridge to contain desiccant silica gel crystals complete with O ring...

Страница 32: ...LPPYRA13 32 V2 3 NOTES...

Страница 33: ...LPPYRA13 33 V2 3 NOTES...

Страница 34: ...LPPYRA13 34 V2 3 NOTES...

Страница 35: ......

Страница 36: ...ed third parties is excluded from the guarantee The instrument shall be returned FREE OF SHIPMENT CHARGES to your dealer The jurisdiction of Padua applies in any dispute The electrical and electronic...

Страница 37: ...e result of the constant development of the product This may produce some differences between the information written in this manual and the instrument you have purchased We cannot completely exclude...

Страница 38: ...GHM GROUP Delta OHM Delta Ohm S r l a socio unico Via Marconi 5 35030 Caselle di Selvazzano Padova ITALY Phone 39 049 8977150 Fax 39 049 635596 www deltaohm com info deltaohm com V2 3 10 09 2020...

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