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Table of Contents
Summary of Contents for SIAP+MICROS T057 TSD
- Page 1 T057 TSD Sunshine duration sensor User Manual and maintenance...
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Page 2: Table Of Contents
User manual and maintenance t057 -di TSD.docx Sommario 1 INTRODUCTION ................................4 2 OPERATING PRINCIPLE ............................5 3 INSTALLATIONS ................................6 Electrical connections ............................10 4 RS485 MODBUS-RTU OUTPUT ..........................12 Setting the communication parameters ......................12 Reading out measurements with the Modbus- RTU protocol ................14 Changing the heating activation temperature .................... -
Page 3: Introduction
User manual and maintenance t057 -di TSD.docx 1 INTRODUCTION The T057 TSD heliofanometer measures the state and duration of insolation. The WMO (World Meteorological Organisation) defines the duration of insolation as the time during which direct radiation is greater than 120 W/m. -
Page 4: Operating Principle
-di TSD.docx 2 OPERATING PRINCIPLE The T057 TSD heliofanometer is based on the use of 16 sensors arranged in such a way that when the sun is present at least one of the photodetectors receives light directly from the sun (in addition to the diffused component). -
Page 5: Installations
5° from the horizontal plane of the heliofanometer. It should also be checked that there are no reflective elements present that could alter the measurement. The T057 TSD does not require orientation adjustments during the course of the year. 13/12/2024 Vers 1.6... - Page 6 User manual and maintenance t057 -di TSD.docx Various installation modes are available, with adjustable supports to adapt the sensor to the position of the sun at the latitude of the installation site: • Installation on a plane using the support with adjustable inclination (without scale).
- Page 7 User manual and maintenance t057 -di TSD.docx Fig. 3.5: Brackets Before swivelling the heliospherometer to its final position, place it vertically and adjust the feet of the base (for installation on a plane) or support (for installation on a pole ø 40 mm) so that the spirit level at the top of the instrument is perfectly level (Fig.
- Page 8 User manual and maintenance t057 -di TSD.docx Fig. 3.7: Heliofanometer orientation The angle that the axis of the instrument must make with the ground is equal to the latitude of the place of installation, so that the axis of the instrument will be parallel to the north-south ter- restrial axis (Fig.
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Page 9: Electrical Connections
User manual and maintenance t057 -di TSD.docx Electrical connections The heliospherometer has an 8-pin connector and uses the cables with 8-pin connectors on one side and free wires on the other. M12 male instrument connector Fig. 3.9: Connections N/colour Function Connector cable contact... - Page 10 User manual and maintenance t057 -di TSD.docx PLC, data logger or Other RS485 Termination RS485/USB or Termination RS485/RS232 sensors converter for PC Lmax = 1200m 220Ω 220Ω Shield Shield Power supply 7...30 Vdc - Power supply Brai + Power supply Fig.
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Page 11: Rs485 Modbus-Rtu Output
User manual and maintenance t057 -di TSD.docx 4 RS485 MODBUS-RTU OUTPUT The MODBUS-RTU protocol is active 5 seconds after switching on. Before connecting the sensor to the RS485 network, it is necessary to assign it an address and set its communication parameters, if different from the factory preset. - Page 12 User manual and maintenance t057 -di TSD.docx Command Response Description CMAnnn &| Set address to nnn Between 1 and Preset to 1 CMBn &| Set Baud Rate n=0 ⇒ 9600 n=1 ⇒ 19200 Preset to 1 ⇒ 19200 CMPn &| Set parity and stop bits n=0 ⇒...
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Page 13: Reading Out Measurements With The Modbus- Rtu Protocol
User manual and maintenance t057 -di TSD.docx Reading out measurements with the Modbus- RTU protocol The following is a list of registers. Input Registers Address Size Format Internal temperature °C [x10] Integer 16 bit Internal temperature °F [x10] Integer 16 bit Direct radiation (SRD, "Direct Sunshine") in W/m 2 Whole 16 bit Status register... -
Page 14: Changing The Heating Activation Temperature
User manual and maintenance t057 -di TSD.docx Fig. 4.2: Sensor numbering Changing the heating activation temperature The temperature below which the heating switches on can be changed by writing the value into the Holding Register of address 2. The value must be set in tenths of a degree in the range of -450 (-45.0 °C) to 700 (+70.0 °C). -
Page 15: Maintenance
User manual and maintenance t057 -di TSD.docx 6 MAINTENANCE In order to ensure high measurement accuracy, it is necessary to keep the pro- tection glass clean. Cleaning can be performed with microfibre cloths for cleaning photo- graphic lenses and with water. If this is not sufficient, use pure ethyl alcohol. After cleaning with alcohol, the protective glass must be cleaned again with water only and dried thoroughly. -
Page 16: Technical Features
User manual and maintenance t057 -di TSD.docx 7 TECHNICAL FEATURES Sensitive elements 16 Silicon photodiodes Spectral range 360...1100 nm Measuring range direct radiation SRD 0...2000 W/m 2 Accuracy of direct radiation measurement Better than 90% of monthly total Accuracy of sunshine duration measurement Better than 90% of monthly total Response time <1 ms... -
Page 17: Safety Instructions
The qualitative level of our instruments is the result of a continuous evolution of the product. This may cause differences between what is reported in the manual and the instrument you have purchased. Siap+Micros S.p.A. reserves the right to modify without notice technical specifications and dimensions to adapt them to the needs of the product. - Page 18 All the information content in this document are the current available at the printing phase. Siap+Micros S.p.A. reserve the rights to change the specifications without any advance notice 13/12/2024 Vers 1.6...
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