Virtual Electronics Company 

Virtual make   Automatic Weather      Station     offers professional weather monitoring and precise values for weather research & analysis. Our weather stations are known for their precision measurements, rugged construction, wide operating temperature range and low power consumption. The standard weather station consists of a weatherproof enclosure which contains the data logger and power supply, and comes complete with a solar panel, tripod stand and basic range of sensors. You can transport the data to your personal computer / Server via Data shuttle / Ethernet / wireless telemetry, allowing the Weather station to stay in place for continuous monitoring / recording. "Virtualware Software". User friendly Windows based weather station software allows you to view collected data. Data file is saved in Microsoft's Excel format.
Following sensors can be connected with weather station

Air Temperature & Humidity Sensor / Infrared Remote Temperature Sensor 
Wind Speed Sensor / Leaf Wetness Sensor / Wind Direction Sensor / Soil Moisture Sensor / Rain Fall Sensor / Solar Radiation Sensor (Shortwave) / Water Temperature Sensor / Solar Radiation Sensor (Global Radiation) / Soil Temperature Sensor / Ultra Violet Sensor / Air Pressure Sensor (Barometer) / Quantum Sensor / Water Level (Shaft Encoder) Sensor / IR Pyranometer Sensor / Hydrostatic Submersible Level Sensor:      Line Quantum Sensor / Evaporation Sensor / Passive Cloud Cover Detector / Snow Water Equivalent  Sensor / Fog sensor / Ultrasonic Snow Depth Sensor / Visibility Sensor

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Measure every major environmental condition with this powerful hand-held instrument – barometric pressure, altitude, density altitude, temperature, humidity, wind speed, wind chill, dew point, wet bulb, and heat index. Using its chart mode, itcan recall and graph up to 250 measurements, along with storage times and dates. Measurements are stored manually at the touch of a button. Measurements can also be automatically stored when the unit is turned off. You can even customize screens so that only selected measurements are displayed. Wind speed can be displayed in knots, meters per second, kilometers per hour, miles per hour, feet per minute, or Beaufort force. Temperature, wind chill, dew point, and heat index are shown in either °C or °F. Relative humidity is displayed as a percentage, and barometric pressure can be viewed in hectoPascal (mb) or inches mercury. Altitude and density altitude are displayed in meters or feet. A durable hard cover protects the impeller while allowing other functions to be used. This versatile, waterproof instrument floats, features an easy-to-read backlit display, and has an auto shutdown feature, which activates after 15 minutes without a button press (feature can be disabled). Neck and wrist lanyards, protective pouch, and 2 AAA batteries included. 
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The Digital rainfall recorder consists of a weatherproof enclosure which contains the data logger and power supply, and comes complete with a solar panel, tripod stand and a tipping bucket type rain gauge sensor. Features: Unattended recording of Rainfall. Standard program and user-friendly software. Data retrieval by Data shuttle and via GSM Network  to your Computer. Suitable for mounting in a variety of locations. Low power consumption. Memory range more than 16500 data sets extendable up to more than 33000 data sets at extra cost. Exterior constructed of Weather proof polypropylene.  Virtually maintenance free.

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Rainfall Event Logger:

The 8" diameter collector meets specifications for statistical accuracy. This Event logger connects to most standard tipping-bucket rain gauges and records rainfall times, and duration as well as momentary contact events and temperature. Because event data is stored when it happens, memory is efficiently used. The data logger features a 32,000 event memory and an event/measurement memory of 32,000 events and measurements. Data can be viewed in inches or millimeters. Tips are logged with time-stamps to gauge rainfall intensity, and the lockout feature eliminates false readings from tipping-bucket bounce. Owing to onboard uSb connector no external devices are required downloading data & configuration for data logger operation. Event type: relay contact closure or rain gauge tips. Operating temperature: -20°C to 70°C. Time accuracy: ±1 minute per month at 25°C. Power: CR-2032 3V lithium battery. Battery life: one year typical use.
Sensor: Tipping Bucket Rain Gauge With Read Switch
Resolution and Accuracy: 0.20 mm with 5% up to 100mm / hour
Catch Area: 330 cm2 collector
Launching / Data Retrieval: through USB Port of PC / LAPTOP
Will Records Temperature and Rain fall Data
No Data Shuttle Required
Data will display in Tabular form in MS-Excel

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The 8" diameter collector meets specifications for statistical accuracy. Each time the bucket tips, a count is transmitted to the indoor display, and the gauge empties. You never have to empty the gauge. The counter display up to 249 mm of rain with the resolution of 0.25 / 0.2 mm and can be reset to zero after each rainfall.  A long-life lithium battery with an approximate life of one year is included. Mount this gauge out in your yard and record rainfall inside the Room. 

There are several types of snow gauges, the simplest of which is simply a measuring stick secured inside a metal container and anchored to the ground. This works well for the measurement of Snow Water Equivalent.  Meteorologists and hydrologists are more likely to use  container attached to a funnel shaped gauge. When the basin is full or the snowfall has ended. The snowfall is then arrived at by multiplying the water equivalent times 10

A Pyranometer is an instrument for measuring solar radiation received from a whole hemisphere. It is suitable for measuring shortwave radiation. This instrument is used extensively in meteorological studies, passive solar system analysis, irrigation scheduling, hydrologic studies and many other environmental studies.  Sensor: Calibration: 0.25 mV per W m-2, Range: 0 to 2000 W m-2, Wave Length Range: 300 to 1100 nm, Stability: 1 to 2% change over a 1 year period, Operating Temperature: - 40 to 55°C, Sensor Housing: Weatherproof anodized aluminum case with acrylic diffuser and  stainless steel hardware. An ideal Pyranometer measures the entire solar spectrum, 280 to 2800 nm. However, about 90% of sunlight energy is between 300 to 1100 nm. Albedo measurement: Provided as per requirement

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A Pyranometer is an instrument for measuring solar radiation received from a whole hemisphere. It is suitable for measuring global sun plus sky radiation. The Pyranometer Sensor measures global solar radiation (sun plus sky) for a spectral response graph. This instrument is used extensively in meteorological studies, passive solar system analysis, irrigation scheduling, hydrologic studies and many other environmental studies.  Sensor: Spectral range 305 - 2800 nm, Sensitivity (nominal) 15 μV/ W.m-2, Temperature range -40 - +80 °C, Range 0 to 2000 W.m-2, Temperature dependence < 0.1%/°C, Calibration traceability WRR.  The standard system consists of a weatherproof enclosure which contains the data logger and power supply, and comes complete with a solar panel, tripod stand and sensor. The data shuttle is a pocket-sized device that can be used to download and transport the data to a personal computer. Albedo measurement: Provided as per requirement

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4-Component Net-Radiation Sensor:

This is a 4-component net-radiation sensor that is used for scientific-grade energy balance studies. The instrument has separate measurements of solar (Short Wave or SW) and Far Infra-Red (Long Wave or LW) radiation. Major improvements relative to comparable instruments include weight (reduced), solar offsets in the LW signal (reduced), ease of leveling (high, because leveling assembly is included).

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Pyrgeometer Sensor:

This is a sensor that can be applied for Far Infra Red (FIR) radiation observations. The main application is in meteorological outdoor experiments. The scientific name of this instrument is pyrgeometer. This is heated, which improves measurement accuracy because it prevents dew deposition. This has a special housing, which makes it possible to include a transmitter, or amplifier. For additional information on the application, use and specifications of regular pyrgeometer, brochure and manual can be consulted.

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Pyrheliometer Sensor:

This is a research grade normal incidence direct solar irradiance sensor (also known as a pyrheliometer). Suitable for tracker mounted operation is intended for short-wave direct solar irradiance measurement of the sun. This is a ‘First Class’ compliant pyrheliometer, as per the latest ISO and WMO standards.

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Sun Tracker:

This Sun / Solar tracker is the most cost effective autonomous two-axis radiometer tracking platform in the market. With mounting accommodation for up 10 normal incidence pyrheliometers and/or multiple normal incidence mounted pyranometers and one global horizontal diffuse (shaded) pyranometer, this is ideally suited to meet virtually any solar monitoring application requirement.

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This is a Micro controller based Automatic Wind Monitor reflect state of the art in micro controller based instrumentation design.  Both wind speed and direction sensors can be attached with this data logger for the collection of real time data automatically. The micro controller converts the analog signals from these sensors to digital format. The micro controller has their individual operating software’s programmed in their internal EEPROMS and the data acquired by them is stored in their internal data RAMS. This micro controller remains in the sleep mode and wake up only when either a signal from the sensors is available or when they receive control signals from the master controller for acquiring the stored data. The micro controller has its internal memory along with an additional 512K EEPROM, a real time clock with an LCD (16 X 2) to display the instrument status.

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This instrument comes with dual digital display measures speeds from 5 mph to over 125 mph. The unique tilting head folds flat for storage. Water-resistant display can be used in heavy rain. Multi-function display, in mph or km/h. Displays Current Speed plus Average or Max speed at the same time. Comfortable Vinyl handle. 3-cup rotor does not care which way the unit is pointed (unlike those little ones that must be pointed into the wind!). 4% accuracy from 10 to over 50 mph, good to over 100, (plus or minus a few tenths from 4 to 10 mph), Low mass rotor is responsive to gusts.

Wind direction will be measure with a wind vane (see diagram). Wind direction is the compass point from which the wind is coming eg south, southwest, west etc. The unit of measurement for wind direction is therefore compass direction. User plot the wind direction for each day of the month on a special graph called a wind rose i.e. Wind Vane is manufactured as per IS:5799:1970 which indicates the direction of wind at the point of observation.

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This instruments measures air temperature and relative humidity. The internal temperature sensor is  mounted on the circuit board inside enclosure of the datalogger case. Typically this sensor is left inside the case and measures ambient air temperature.  Measurement range: Temperature: -40° to 123.8°C, RH: 0% to 100% RH
AccuracyTemperature: better than +/- 0.5°C from 0° to 40°C see Plot A
RH: ± 2% from 10% to 90% over the range of 0° to 60°C, see Plot B; ± 4% from 0% to 10%  and 90% to 100%
Resolution: Temperature: 0.01°C, RH: 0.03%
Sample Rate: 1 minute to 24 hours, user selectable
Drift: Temperature: 0.1°C/year, RH: <1% per year typical
Response time in airflow of 1 m/s (2.2 mph)
Temperature: 1 minute (max), RH: 1 minute(max)
Time accuracy: Approximately ± 1 minute per month Typical
Operating range: Logging: -30° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Battery life: 1 year typical use
Memory: 64K bytes 

Temperature Humidity Logger with LCD:

USB interface for easy setup and data download
Selectable data sampling rate: 1 second to 24 hours
User-programmable alarm thresholds for RH and Temperature
LCD displays current readings, Min/Max, and alarm status
Complete with 3.6V Lithium battery, mounting bracket with combination lock, Includes Windows® 2000, XP, and Vista compatible analysis softwareature
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Barometric pressure - Barometric pressure is most commonly monitored as part of a weather station, but is also used for stand alone readings of barometric pressure changes. Virtual's data loggers for barometric pressure applications include weather stations and a stand-alone Barometric Pressure logger with a built-in barometric Pressure Sensor. The Vitual Make Barometric Pressure logger is an economical choice for indoor / Outdoor Barometric Pressure monitoring. Its small size and large memory capacity make it a great multi-purpose logger
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These screens are manufactured as per IS:5948:1970 and are suitable for housing thermograph, hydrograph, dry and wet bulb, Thermometer and Maximum-Minimum Thermometer. Basically these are manufactured from best quality Indian wood and accurately assembled with side louvers and supplied available in two sizes: Small size and Large size

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Thermometers: 
Maximum Thermometer

Minimum Thermometer

Wet Thermometer

Dry Thermometer

Assaman Psychrometer

Sling Psychrometer