V-Tech Automated Weather Monitoring

Station (WMS) automatically monitors site

meteorological conditions in real time,
transmitting weather sensor’s data to
our IOT based monitoring platefrom.
It is fully computerized, digital and self
contained power source system, fitted
with data logger and battery charging
solar panel along with sensors mounted
on Tripod stand with sealed water proof
enclosure for data logger, solar charger
and battery

The all-in-one weather station reduces the

installation, support and maintenance cost
while improving the robustness and
manageability of the PV plant monitoring
solution/ smart farming.

Key Components Key Features

The expanded sensor set enables plant · WMS supports multiple sensor set:
management across a broad range of plant ambient temperature, solar irradiance
sizes & requirement. (Pyranometer), humidity sensor,
module temperature, wind speed,
The WMS is delivered ready for installation and wind direction, rain gauge , Humidity
requires the installer to mechanically mount the sensor, Air pressure sensor, cloud
sensors on a Mounting Stand, Insert SIM card cover, soil moisture, evaporation, leaf
in the data logger and connect with power and wetness, air quality sensors and
communication cable. The key components of many more
WMS include-
· No on-site configuration, calibration or
· Weather sensors & accessories any software installation is required
· Tripod Stand
· Data Logger set · GSM/ LAN/ WiFi supported Data Logger
· IoT Platform with Inbuilt memory

· Plug and play system

System Architecture

Other sensors

3 pin Socket Modbus

230v AC Converter
Supply

Wind Direction Sensor

Ambient Temp. Sensor

SMPS
Data Logger

Module Temp. Sensor

Pyranometer

Power cable

2 Core RS485 Cable

3 Core RS485 cable

Connec on Diagram of WMS and Data Logger

 Technical Specifica ons

Technical data and types

Sensors
Ambient temperature Range: 0°C to 100°C, Accuracy +/- 0.5°C

PV panel temperature Range: 0°C to 100°C, Accuracy +/- 0.5°C

Solar Radiation sensor Range 0 to 1800 W/m2 Accuracy +/- 5%

Temperature Range -40°C to 65°C

WMS DATA LOGGER SPECIFICATIONS

Communication
Serial port RS-485 2 wire, Modbus RTU, 3 IO Ports
Recommended cable Cat. 6/ RS485/ or equivalent

Power supply
DC power supply input 8-32 VDC
Supply Current 0.08A at 12 VDC

Compliance
Humidity 0 to 100% Condensing
Enclosure IP 65

Physical parameters
Dimensions 105mmx95mmx24mm
Weight 160gm
Operating Temperature -10°C to 55°C

Mounting Stand
Material Type MS, Power coated
Stand Type Tripod
Height 8 feet

Warranty
Standard warranty 1 year
WMS IoT Pla orm

WMS Dashboard

Irradiation Curves

Intelligent Analysis & Multiple graphs comparison

 Solar Radiation Sensor 300V

Sensor Specifica ons and Moun ng

Pyranometer is to be mounted in an easy-to-reach location in order to clean the dome regularly and
carry out maintenance. At the same time, make sure that no buildings, constructions, trees or
obstructions exceed the horizontal plane where the pyranometer lies. If this is not possible, select a
site where obstructions in the path of the sun from sunrise to sunset do not exceed 5 degrees of
elevation. N.B The presence of obstructions on the horizon line affects significantly the
measurement of direct irradiance
Pyranometer is to be located far from any kind of obstruction, which might reflect sunlight (or sun
shadow) onto the pyranometer itself.
The sunlight sensor must be installed at the same azimuth and tilt angle than the PV array.

Specifica ons

· Operating Temperature : -40° to +65° C

· Storage Temperature : -45° to +70°C
· Transducer : Silicon photodiode
· Spectral Response : 400 to 1100 nanometers Cosine Response
· Percent of Reading : ±3% (0° to ±70° ), ±10% (±70° to ±85° )
· Percent of Full Scale : ±2% (0° to ±90°)
· Temperature Coefficient : + 0.12% per °C
· Reference temperature : 25°C
· Housing Material : UV-resistant PVC plastic
· Weight : 250 g
· Range : 0 to 1800 W/m2
· Accuracy : ±5% of full scale
· Drift : up to ±2% per year
· Output : 0 to 5 VDC (0- 1800 w/m2)
· Power supply : 7- 24 VDC 1mA (typical)

Mounting

· Using the bubble level on the sensor as a guide, adjust the sensor until it is level by tightening
or loosening the screws. The top of the Solar Radiation sensor should be even with or slightly
above the rim of the rain cone. The entire comb structure of the UV Radiation sensor should be
above the rim of the rain cone
· Final leveling of the sensor(s) should be done with the ISS mounted in its operating location
· Ensure that the cables are free of crimps. Secure them to the support tubes with the provided
cable ties so that they will not fray in the wind.
· Shade the sensor and make sure the reading changes
 Ambient Temperature sensor

The Ambient Temperature Sensor comes factory-assembled inside the radiation shield. The radiation
shield bracket can be mounted to a pipe (1.0 - 2.0 in. diameter), using the supplied U-bolt.

The radiation shield can be installed anywhere in the vicinity of the PV array.

It is recommended to place the Ambient Temperature Sensor on the north side (in the northern
hemisphere) of the array, otherwise you must provide array shading setback

Specifications

• Construction : UV-stabilized white thermoplastic plates, aluminum mounting

• Bracket, white powder-coated ,stainless-steel U-bolt clamp
• Plate Diameter :196 mm
• Plate Height :110mm
• Measuring Range : 0 to 100 C
• Accuracy : 0.3 C
• Sensors : Temperature : RTD Pt100Ω Class A
• IEC 60751
• Output : 4-20mA ,2 wire Loop Powered ,Max load 600Ω at 24 vdc supply
• Supply Voltage : 12 to 26 VDC
• Housing Electronics :Poly carbonate watertight enclosure
• Protection : IP-67

Mounting
• The Solar Radiation Shield may be mounted in three orientations.
• On the side of a wooden post or a wall.
• On a metal pipe with outside diameter between 1 in. and 1-1/4 in. (25 mm and 31 mm)
on top of a wood post.
 Module Temperature Sensor

This sensor is designed to attach directly to any solar panel. When placed on the center back side of
the panel, it accurately measures the temperature of the panel.

Prior to installation of the PV temperature sensor onto the PV panel, the installation area of the panel
back should be thoroughly cleaned. This cleaning will ensure a good bond between sensor and panel
and allow for accurate panel temperature readings.

After cleaning, peel off the protective adhesive tape on the temperature sensor and stick it onto the
back of the panel. Firmly press the sensor into place.

Specifications

·
· Accuracy : ±5°C
· Sensors : Temperature : RTD Pt100Ω
· Output : 0- 5v
· Supply Voltage : 12 to 24 VDC
· Housing :Poly carbonate watertight enclosure
· Protection : IP-65 Weight :
· Approx 150gms

Mounting

· Select a PV module that remains non-shaded throughout the day.

· Peel the backing from the adhesive tape and press the sensor firmly against the surface.
· Do not attempt to extend or shorten the pre-assembled 2.5 m cable.
· The module temperature sensor is affixed to the back of the PV module.
· Tie the sensor cable off in a way that does not pull on the sensor
· It is recommended to fix the sensor and the cable with an additional adhesive tape.