Lambrecht 16131.5 Series Manual
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Lambrecht 16131.5 Series Manual

First class pyranometers with various outputs (and heater)
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Manual
16131.5 SERIES
First class pyranometers
with various outputs (and heater)

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Summary of Contents for Lambrecht 16131.5 Series

  • Page 1 Manual 16131.5 SERIES First class pyranometers with various outputs (and heater)

  • Page 2: Safety Instructions And Warranty

    Please note the loss that unauthorised manipulation of the system shall result in the loss of warranty and non-liability. Changes to system components require express written permission from LAMBRECHT meteo GmbH. These activities must be performed by a qualified technician. The warranty does not cover: 1.

  • Page 3: Table Of Contents

    Installation of 16131.5 Site selection and installation Installation of the sun screen Installation of pyranometer Electrical connection of active 16131.5 series: wiring diagram Electrical connection of passive 16131.5: wiring diagram Grounding and use of the shield Using heater of 00.16131.501030 and 00.16131.0501000 Using 00.16131.501040’s analogue 4 to 20 mA output...

  • Page 4: Introduction

    Modbus over TTL (on request) and analogue 4-20 mA output (without heater) Version 00.16131.501000: passive sensor with analogue millivolt output and heater • Benefits of the 16131.5 series: best measurement accuracy in first class • improved response time •...

  • Page 5: Ordering And Checking At Delivery

    1 Ordering and checking at delivery 1.1 Ordering 16131.5 Id-No. for standard configurations 16131.5: Version 00.16131.501030: ISO 9060 first class pyranometer sensor with Modbus over RS-485 and heater Version 00.16131.501040: ISO 9060 first class pyranometer sensor with 4 to 20 mA output without heater Version 00.16131.501000: ISO 9060 first class pyranometer sensor with passive analogue millivolt output and heater Common options / accessories are:...

  • Page 6: Instrument Schematic

    2 Instrument schematic 16131.5’s scientific name is pyranometer. A pyranometer measures the solar radiation received by a plane surface from a 180° field of view angle. This quantity, expressed in W/m , is called “hemispherical” solar radiation. The solar radiation spectrum extends roughly from 285 to 3000 x 10 m.
  • Page 7 the heater only during night-time. Combining a heater with external ventilation makes these heating offsets very low. Version 00.16131.501040 offers irradiance in W/m as a 4-20 mA output. It must be used in combination with suitable power supply and a data acquisition system which is capable of handling a 4-20 mA current loop signal.

  • Page 8: Specifications Of 16131.5

    3 Specifications of 16131.5 3.1 Specifications of 16131.5 16131.5 measures the solar radiation received by a plane surface from a 180° field of view angle. This quantity, expressed in W/m , is called “hemispherical” solar radiation. The instrument is classified according to ISO 9060 and should be used in accordance with the recommended practices of ISO, IEC, WMO and ASTM.
  • Page 9 16131.5 ADDITIONAL SPECIFICATIONS Measurand Sensor body temperature Measurand in SI radiometry units temperature in °C Temperature sensor solid state System on Chip (SoC) silicon bandgap temperature sensor Instrument body temperature accuracy 0.5 °C Instrument body temperature resolution 3.9 x 10 °C Levelling (see options) bubble level and adjustable levelling feet are included...
  • Page 10 00.16131.501040 – ANALOGUE 4 TO 20 mA 4 to 20 mA output irradiance in W/m2 Transmitted range 0 to 1600 W/m2 Output signal 4 to 20 x 10 Standard setting (see options) 4 x 10 A at 0 W/m2 and 20 x 10 A at 1600 W/m2 Principle of 4 to 20 mA output 2-wire current loop...

  • Page 11: Dimensions Of 16131.5

    3.2 Dimensions of 16131.5 M5 (2x) Ø 68 Figure 3.2.1 Dimensions of 16131.5 in x 10...

  • Page 12: Installation Of 16131.5

    4 Installation of 16131.5 4.1 Site selection and installation Table 4.1.1 Recommendations for installation of pyranometers Location The horizon should be as free from obstacles as possible. Ideally, there should be no objects between the course of the sun and the instrument. Mechanical mounting / thermal insulation Use connection by bolts to the bottom plate of the instrument.

  • Page 13: Installation Of The Sun Screen

    4.2 Installation of the sun screen The quick release system of 16131.5’s sun screen allows for easy and secure mounting of the sun screen on the sensor. Installation and removal of the connector can be done after removal of the sun screen.

  • Page 14: Installation Of Pyranometer

    4.3 Installation of pyranometer LAMBRECHT meteo provides several mounting set for the 16131.5 pyranometer. Id-No. 32.14627.003010 Set for inclined mounting on traverse system 14627 Id-No. 32.14627.003000 Set for horizontal mounting on traverse system 14627 Id-No. 33.14627.012000 Set for wall mounting The picture below shows the installation of the 16131.5 on the “Set for inclined mounting”...

  • Page 15: Electrical Connection Of Active 16131.5 Series: Wiring Diagram

    4.4 Electrical connection of active 16131.5 series: wiring diagram The instrument must be powered by an external power supply, providing an operating voltage in the range from 8 to 30 VDC. This is the main power supply for the sensor, using the brown and white wires.

  • Page 16: Electrical Connection Of Passive 16131.5: Wiring Diagram

    4.5 Electrical connection of passive 16131.5: wiring diagram 16131.5 is a passive sensor that does not need any power. Cables generally act as a source of distortion, by picking up capacitive noise. We recommend keeping the distance between a datalogger or amplifier and the sensor as short as possible.

  • Page 17: Using 00.16131.501040'S Analogue 4 To 20 Ma Output

    4.8 Using 00.16131.501040’s analogue 4 to 20 mA output 16131.5 gives users the option to use 4 to 20 mA output instead of its digital output. When using 4 to 20 mA output, please read this chapter first. Using the 4 to 20 mA output provided by 00.16131.501040 is easy. The instrument can be connected directly to commonly used data-logging systems.

  • Page 18: Data Acquisition Requirements For Using 00.16131.501000'S Millivolt Output

    4.9 Data acquisition requirements for using 00.16131.501000’s millivolt output The selection and programming of data loggers is the responsibility of the user. The LAMBRECHT meteo data logger Ser[LOG] Plus is ideally suited for solar irradiance measurement using a pyranometer with millivolt output.

  • Page 19: Connecting To An Rs-485 Network

    4.10 Connecting to an RS-485 network 16131.5 is designed for a two-wire (half-duplex) RS-485 network. In such a network, 16131.5 acts as a slave, receiving data requests from the master. An example of the connection to an RS-485 two-wire network is shown in the figure below. 16131.5 is powered from 5 to 30 VDC. The power supply is not shown in the figure.

  • Page 20: Communication With 16131.5

    "most significant byte" is sent first. For values that go beyond one register (e.g. 32 bit) this is not clearly specified for the Modbus. In these cases (32 bit or 64 bit) the LAMBRECHT Modbus sensors follow the big-endian number format. Example Big-Endian: Register size value 16 - Bits 0x1234 is transmitted in the order: 0x12 0x34.

  • Page 21: Modbus Command Set

    • 5.6 Measured value and parameter register The Lambrecht meteo Modbus provide in the register range 30001 to the measured values. The registers Addresses 30001 to 35000 apply to all Lambrecht meteo Modbus sensors, but are only available or valid if the respective sensor supports the corresponding values (e.g. a pure wind sensor does not provide any air humidity).

  • Page 22: Sensor Parameters / Configuration-Parameters

    5.8 Sensor parameters / configuration-parameters Table 5.8.1 Configuration registers Register Parameter name Unit Divisor Description Data address type 40001 Modbus device address The addresses 1...247 are allowed. 40200 Baud rate 0,01 96=9600 192=19200 384=38400 46000 Number of mapping-registers* Contains the number of occupied mapping registers for the auto- configuration...

  • Page 23: Network Communication: Getting Started

    Network communication: getting started Once it has the correct Modbus address and communication settings, 16131.5 can be connected directly to an RS-485 network and a power supply. Installing a 16131.5 in the network also requires configuring the communication for this new Modbus device.

  • Page 24: Maintenance And Trouble Shooting

    6 Maintenance and trouble shooting 6.1 Recommended maintenance and quality assurance 16131.5 can measure reliably at a low level of maintenance in most locations. Usually unreliable measurements will be detected as unreasonably large or small measured values. As a general rule this means that regular visual inspection combined with a critical review of the measured data, preferably checking against other measurements, is the preferred way to obtain a reliable measurement.

  • Page 25: Trouble Shooting

    6.2 Trouble shooting Table 6.2.1 Trouble shooting for 00.16131.501030 and 00.16131.501040 General Inspect the instrument for any damage. Inspect if the connector is properly attached. Check the condition of the connectors (on chassis as well as the cable). Inspect if the sensor receives DC voltage power in the range of 5 to 30 VDC. Inspect the connection of the shield (typically not connected at the network side).
  • Page 26 In case there is a minor layer of moisture that is hardly visible: Arrange to send the sensor shows internal back to LAMBRECHT for diagnosis. condensation. The inner dome Arrange to send the sensor back to LAMBRECHT for diagnosis. shows internal condensation...

  • Page 27: Appendices

    16131.5 = 6 Since the addresses from the 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.
  • Page 28 Register Parameter name Unit Fac- Description Data Func- Storage-type address type tion- >16 bit code 30001 Wind speed instantaneous 10 1 decimal place 0x04 Big-Endian value WORD 30201 Wind direction ° 10 1 decimal place 0x04 Big-Endian instantaneous value WORD 30401 Air temperature °C 10 1 decimal place...
  • Page 29 The registers can only be read out as a block! The length of the block or the number of available mapping registers is in holding register 46000 For example, in the 16131.5, registers 46001 to 46008 contain valid addresses. The holding register 46000 contains the number of registers “6”, all 6 registers must be read out in the block with the function code 0x04.

  • Page 30: Eu Declaration Of Conformity

    7.2 EU declaration of conformity LAMBRECHT meteo GmbH. Friedlaender Weg 65-67 37085 Goettingen Germany in accordance with the requirements of the following directive: 2014/30/EU The Electromagnetic Compatibility Directive hereby declare under our sole responsibility that: Product model: 00.16131.501000, 00.16131.501030. 00.16131.501040...

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