Virtual Electronics Company
Virtual Electronics Company
1105/1, Salempur Industrial Area
Roorkee, Uttarakhand 247667
India
Sensors
Temperature & Relative Humdity Sensor
Type: Digital Sensor.
Temperature Range: - 40 to 123.8 ° C.
Accuracy: ± 0.5 ° C @ 5 to 40° C.
Resolution: 0.01 ° C Typical.
RH Range: 0 to 100 %.
Resolution: 0.5 % RH Typical.
Accuracy: ± 2% @ 20 to 80 %
Long term stability: Typ <1%RH/ Year
Repeatability: ± 0.1 %.
Output: 4-20 m ampWind Speed Sensor
Sensor: 3 Cup Anemometer
Sensing: Reed switch/magnet provide 1 pulse per rotation
Range: (~5 kph to over 200 kph)
Accuracy: Better than 0.5 m/s
Rotor Diameter: 125 mm
Output: 1 pulse per rotation 2.5 mph per Hz or 4-20 m amp
rugged Delrin body with bronze and Rulon bushingsWind Direction Sensor
Sensing: magnetic Hall Effect sensor
Range: 360 ° , zero dead band
Resolution: 12 bit or 0.025 °
Accuracy: +/-0.3 to 0.5% of signal rangeSupply voltage 4.5 to 5.5 VDC
Current 15 mA typical
Output 5% to 95% of input voltage (0.25 to 4.75VDC) or 4-20 m ampRainfall
Sensor: Tipping Bucket Rain gauge.
Range: 100mm / hour
Resolution: 0.20mm.
Sensing: Magnet & Reed Switch.
Capacity: Unlimited.
Accuracy: 5% @ 25mm/hr.
Output: Switch closureWater Temperature Sensor
Range: - 10 to 110 ° C.
Accuracy: ± 0.5 ° C
Resolution: 0.1 ° C
Output: Analog (10 mV / ° C)Soil Temperature Sensor
Range: - 10 to 110 ° C.
Accuracy: ± 0.5 ° C
Resolution: 0.1 ° C
Output: Analog (10 mV / ° C)Air Pressure Sensor
Atmospheric Pressure Sensor:
Type: Piezo-resistive Silicon membrane
Range: 150 mb to 1150 mBar
Resolution :0.1mBar
Accuracy: ± 1%
Output: 4 to 20mA (0 to 100 ohm) Working Voltage from 12V to 24V DC
Housing: IP65
Temperature Range: -30 to 80CSolar Radiation Sensor (Pyranometer)
For Shortwave Radiation
Spectral Range: 300 - 1100 nm
Radiation Range: 0 – 2000 w/m2
Cosine response @ 45° zenith angle: ± 4 %
Cosine response @ 75° zenith angle: ± 10 %
Absolute accuracy: ± 5 %
Repeatability: ± 1 %
Output: 0.200 mV / Wm-2
Sensitivity: Custom calibrated to exactly 5.00 W m-2/ mV
Operating environment - 40 to 55 °C; 0 to 100% RHSolar Radiation Sensor (Pyranometer)
For Global Radiation
ISO classification second class
Spectral range 305 - 2800 nm
Sensitivity (nominal) 15 μV/ W.m-2
(Each Sensor is calibrated separately)
Temperature range -40 - +80 °C
Range 0 to 2000 W.m-2
Temperature dependence < 0.1%/°C
Calibration traceability WRR4 - Component Net Radiation Sensor
General Temperature range: -40 to +80 oC
Range : 0 to 2000 Wm-2
Temperature sensor: Pt100
Temperature sensor: users own preference can be plugged in
Pyranometer (SW): Pyranometer ISO classification: second class, Spectral range: 305 to 2800 nm
Calibration traceability: WRR
Pyrgeometer (LW): Spectral range: 4500 to 50000 nm, Calibration traceability: ITS 90
Window heating offset @ 1000 Wm-2 solar radiation: <15 Wm-2
heating power: 1.6 Watt @ 12 VDCPyrgeometer Sensor
Input 7,2 to 35 VDC for transmitter
12 VDC for heater
Output Pt100 signal
Signal from transmitter (programmable), either 4-20mA or 4-20mA with
HART protocol
Output specifications 4mA: -300 W/m2 20mA: +100 W/m2
Can be adapted at customer’s request
Accuracy of output dependant on used transmitter
Temperature dependence dependant on used transmitter
Dimensions DIN form BPyrheliometer Sensor
ISO classification: First Class
Spectral range: 200 to 4000 nm
Response time (95%): 18 s
Full opening view angle: 5 degrees
Slope angle: 1 degree
Irradiance range : 0 to 2000 W/m2
Sensitivity (nominal): 10 μV/ W/m2
Temperature range: -40 to +80° C
Temperature dependence: < 0.1%/°C
Non stability (drift): < 1% per year
Calibration traceability: WRR
Cable length: 5 standard (longer lengths optional)Ultra-voilet Sensor
Output: Calibrated to approx 0.1 mV per µmol m-2 s-1
Range: 250 to 400 nanometers in µmol m-2 s-1
(full UV in sunlight: 170 µmol m-2 s-1)
Input Power: None, self-powered
Operating Environment: outdoor use.
Can be submerged underwater.
Materials: Photodiode with a fully-potted PVC head.Quantum Sensor
Quantum sensors are often used to quantify the light available in greenhouse settings. The line quantum sensor is especially helpful, as it provides a spatial average.
Absolute accuracy ± 5 %
Uniformity ± 3 %
Repeatability ± 1 %
Output: 0 to 5 V (4.0 V = full sunlight 2,000 μmol m-2 s-1)
Input power 5 to 5.5 VDC
Current draw 285 μA
Operating environment - 40 to 55 °C; 0 to 100% relative humidity. Designed for continuous outdoor use. Can be submerged under water (with or without mounting screw).Line Quantum Sensors is also available
Water Level Sensor (Shaft Encoder Type)
Sensor: Optical Encoder with Float
Sensing: Through Opt coupler
Resolution: 1 mm
Material Used: Non-corrosive.
Output: 2 channel quadrature pulseSoil Moisture Sensor
Type: Gipsum block
Range: 0 to 200 Centibar
Output: Change of ResistanceWater Level Sensor (Pressure Type)
Range:0 to 10, 0 to 35, 0 to 100 to 0 to 400 meter H2O
combined accuracy: 0.5% FS
Signal output: RS 485 / 4~20mA
Excitation: 9~36V DC
Cable Type: Vented Cable for Air Pressure Compensation
Mechanically robust
Safe humidity protection
Integrated over-voltage protectionWater Current Sensor
The propeller type current meter is a world recognized instrument. This current meter is suspended in the water using a cable with sinking weight or wading rod and will accurately measure stream flow velocities from 0.01 to 3.5 meters per second with Multiple propellers. Magnetic current meter has a permanent magnet mounted on its shaft. In every revolution of the cup wheel the magnet actuates the proximity resulting in one make and break of the contacts. The free ends of the proximity switch cable are connected to an automatic counter, which registers one count for every revolution of the wheel. The calibration chart provided with the meter gives the velocity in m/sec. Output: switch closureEvaporation Sensor
Sensor: Optical Encoder with Float
Sensing: Through Opt coupler
Range: 30mm to 300 mm.
Resolution: 0.25 mm
Material Used: Non corrosive.
Pan Size: 1220 mm diameter.
Pan Mounting: Timber Frame
Pan bird gauge: Square Steel mesh
Output: 2 channel quadrature pulseSnow Water Equavelent Sensor (Snow Gauge)
The load cell used for the measurements was a Cantilever beam type 200 Kg capacity with 3.0 mv/V rated output and a non-linearity of 0.03 FSO. The load cell is corrosion resistant (stainless steel) and hermetically sealed for use in outdoor environment.
The snowfall is received on a MS platform of 50cmx50cm size. This area corresponded to 120 cm of SWE. The load cell was fixed between a bottom MS plate and a top MS plate, both of 4 mm thickness, through a separate fixing arrangement so that the load is uniformly transmitted to the centre of the load cell. Dimensions of the top plate were 490mm x 490mm whereas that of the bottom plate were 479mm x 479mm, thereby providing a 5 mm gap to facilitate a free vertical movement of the top plate during loadingLeaf Wetness Sensor
Sensor Output: Resistance varies from above 3,000,000 ohms when dry to around 1,000 ohms when wet
Sensor Range: 0 to 100% of the dew range, frost and freezing conditions will not harm the sensor
Response Time: 0 to 100% relative dew within six minutes
Output: voltage output (Analog)Porus Tube Piezometer
This is a porous tube of annular cross-section, 37 mm outer dia x 6 mm wall thickness and available in two sizes 12 Inch & 24 Inch long. The porosity of the porous tube is chosen according to site conditions. Unless specifically requested, the porous tube filter has a grain size of 60 micron.Infrared Remote Temperature Sensor
This sensor is used to measures remote temperatures of road
surfaces, plant canopies, soil, snow, and water surfaces as
well as sky temperature (net long wave radiation)
Field of view: 22° half angle
Output Target temp. 60 μV per °C difference from sensor body
Sensor body temperature: 0-2500 mV 0-2500 mV
Accuracy: On -10 to 65 °C
±0.2 °C absolute accuracy
±0.1 °C uniformity
±0.05 °C repeatability
Accuracy: On -40 to 70 °C
±0.5 °C absolute accuracy
±0.3 °C uniformity
±0.1 °C repeatability and uniformity
Response time < 1 second to changes in target temperature
Input power 2.5 V excitation
Operating environment -55 to 80 °C; 0 to 100 % RH
(non-condensing)
Virtual Electronics Company
1105/1, Salempur Industrial Area
Roorkee, Uttarakhand 247667
India
