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: Digital (2 wire communication)
Wind Speed Sensor
Sensor: 3 Cup Anemometer
Sensing: Opto coupler
Input: 5V DC
Range: 0 to 67 m/s
Resolution: 0.1 m/s
Accuracy: Better than 0.5 m/s
Current Consumption: 7 M amp @ 5 V DC
Dia of Cup: 50 mm
Output: Pulse output (Open Collector, Digital)
Material Used: Al, SS & Brass
Wind Direction Sensor
Sensing: Smart Position Pot
Range: 0 to 360 °
Resolution: 1 °
Input: 0 to 5 v
Output: Analog (0 to 5 v)
Accuracy: ± 3 °
Current Consumption: 0.5 M amp @ 5 VDC
Material Used: Al & Brass
Rainfall
Sensor: Tipping Bucket Rain gauge.
Range: 100mm / hour
Resolution: 0.25mm / 0.20mm.
Sensing: Magnet & Reed Switch.
Capacity: Unlimited.
Accuracy: 5% @ 25mm/hr.
Output: Switch closure
Water 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)
Solar Radiation Sensor (Pyranometer)
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% RH
Air Pressure Sensor
Type: Piezo-resistive Silicon membrane
Range: 150 mb to 1150 mBar
Input Signal: 5V DC
Output signal: 0.2 to 4.8 V DC
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 pulse
Water 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: 4~20mA
Excitation: 9~36V DC
Cable Type: Vented Cable for Air Pressure Compensation
Mechanically robust
Safe humidity protection
Integrated over-voltage protection
Water 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 closure
Evaporation 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 pulse
Snow 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 loading
Leaf 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)
Soil Moisture Sensor
Type: Gipsum block
Range: 0 to 200 Centibar
Output: Change of Resistance
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.
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.
Electronic Tensiometer
Range:0 to 100 kpa / Centibars
Signal output: 4~20mA
Excitation: 8~24 VDC
Accuracy: 0.25% FS
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)
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