سنسور رطوبت سنج خاک BND-MS101
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نقد و بررسی : سنسور رطوبت سنج خاک BND-MS10
Unit:% (m3 / m3)
Output signal: 0-2V, 4-20mA
Current signal load regulation <0.004% / Ω, linear output signal.
Accuracy: ± 3% (0-53% range), ± 5% (> 53%)
Swap accuracy: <3% (range 0-53%)
Complex measurement error: 2%
Parameter Type: volumetric soil moisture content ratio
Measuring principle: Frequency Domain (FDR)
Working voltage: 5-24V, (for the current type, the minimum operating voltage (V) = (sampling resistor +100) * 0.02 + 3.7V).
Quiescent current (without current output): Peak <40mA, average <10mA
Operating frequency: 100MHz
Response time: <0.5S
Measurement settling time: <1S
Operating temperature range: -40 ~ 85C (measured ice moving soil moisture values will lower inaccurate, requiring users to the actual compensation adjustment)
Measurement area: 95% of the probes affect the central hub, the diameter of 7cm, 10cm height of the inner cylinder
Probe Length: 7cm
Probe diameter: 3mm
Sealing material: epoxy resin (black flame retardant)
Cable length: standard 3.5m (three-wire shielded cable)
Protection class: IP68
The use of green flame retardant epoxy curing, vacuum casting, completely waterproof, can withstand strong external shocks.
Surface is polished, the sides have concave-convex structure, easy to hold, beautiful and durable.
Kang using static EPE packaging, transport storage more secure.
Isolation design, to eliminate the problem of needle electrolysis, needle made of high quality material that can withstand long-term electrolysis, can withstand acid corrosion in the soil.
High accuracy, reliable performance, by the impact of soil salinity is small, it can be adapted to all kinds of soil.
With power lines, ground, signal line three-protection, sound protection can reverse, and other damage caused by the wrong connection.
Voltage type (0-2V): Moisture content% = measured voltage (V) * 50
Current Type: Moisture content =%) measured current mA) -4) / 16 * 100
Yellow Line: positive power supply
Lanshan: Power Ground
Green line: output (ground)
Suitable for scientific experiments, water-saving irrigation, greenhouse, flowers, vegetables, grass pastures, fast testing of soil, plant culture, sewage treatment, food storage and various particle moisture content measurements.
Speed measuring method:
Select the appropriate measurement location, to avoid the stones, make sure the needle does not hit hard objects like stones, according to the desired measurement depth away with topsoil, maintain the original soil beneath tightness, vertical grip sensor body Oh poor soil, the needle must be fully inserted into the soil, can not insert around, shaking. Construction averaging several measurements within a small area measuring point.
Buried measurements: straight vertical digging> 20cm pit, measuring the depth of press needs, then the depth of the needle in a predetermined level sensor plugs into the pit wall, will pit landfill compaction. After a period of stabilization can be carried out for several days, months, or even longer measured and recorded.
1, the voltage-current load only the output signal can not sink current. If the direct and click interface chip AD, is recommended for output in parallel a 50 ~ 100k resistor to prevent sinking.
2, when the use of the ground (blue line) and the shield must be connected together, can be connected to the earth, may not be connected to the earth, connected to the earth to improve the reliability and robustness.
3, avoid strong direct sunlight on the sensor body and cause overheating.
- Do not bend needle violence, do not forcibly pull sensor lead, do not beat or violent crash sensor.
5, sensor protection class IP68, the sensor can be soaked in water throughout.
6, due to the presence of radio frequency electromagnetic radiation in the air in order to prevent interference broadcast communications, the power on for too long in the air.
مشخصات فنی : 1