SIDE ELECTRONIC PRESSURE SENSOR FOR SMS TENSIOMETERS - SKT 850
What do I measure ?
The total soil water suction in the tensiometer tube (also known as soil water potential or hydraulic charge)
APPLICATIONS
AGRICULTURE
Precise management of irrigations.
Management of adjusted water stress levels for seed production.
AGRONOMY / ENVT
Studies on water bulbs in soils.
Water stress management for modeling.
Checking water potential levels before starting a soil solution sampling campaign.
Following water percolation periods.
HYDROLOGY
Water potential measurements in unsaturated soils.
Soil water caracteristic curves.
Studies on water flows : percolation...
Studies on water ressources : refilling of the water tablemonitoring.
Water balance.
SOIL PHYSICS
Analysis of water tranfers, water potential measurements.
The SKT 850 pressure sensor is built for field use and has a 0 to -999 HPa (mbar) measuring range.
The SKT 850 sensor has its own temperature correction (-10°C /+50°C).
The sensor is light (60 grs) and small.
The SKT 850 sensor is compact, waterproof and is built for outdoor as well as indoor use.
The SKT 850 sensor will be strongly fixed to any tensiometer.
The SKT 850 sensor exists in two versions : differential voltage or current loop output (4-20 mA).
You can choose between ordering the sensor alone or fixed to a tensiometer (all lengths are possible). Please, consult us.
Key Advantages
LOW PRICE
ACCURATE
TEMPERATURE COMPENSATION
MONITORING (by connection to a data logger)
Disadvantages
Electronic sensor sensitive to frost & to overpressure (ex : if the operator pushes too hard on the silicone stopper)
TECHNICAL CHARACTERISTICS
Measuring range : 0 Hpa to -999 Hpa.
Accuracy : better than 1% of full scale.
Pressure sensor : differental pressure type with integrated temperature compensation.
Offset : factory calibrated. Each sensor is delivered with an individual calibration certificate.
Measuring process : by putting the sensor's inlet into the tensiometer's tube. The sensor can be fastened to any existing tensiometer (manufactured by SDEC France or any other manufacturer).
Also fixable : on a TENSIONIC tensiometer tube (let us know when ordering).
Fastening system : stainless steel clamp collar.
Output : On cable across nickel stuffing box.
Power supply : direct current; +6 to +15 Volts.
Electric protection : the sensor is electronically protected against polarity reverse (SKT 850C2 model).
Temperature compensation : -10°C to +50°C.
Sensor case : The case is made out of PVC and special resin. The case is waterproof (IP67).
Dimensions : Ø = 50 mm x 40 mm.
Weight : 185 gramms.
Operating temperature : -10°C à + 50°C.
Storage temperature : -20°C à + 60°C.