This transducer is suitable for measurement of soil moisture absorbing force and proper for management of plant cultivation
The BPT-A-80KPS is a soil moisture transducer designed to measure water pressure in a vessel equipped with a porous cup (porous ceramic tube) and filled with degassed water. If the soil around the embedded porous cup is dry, the soil absorbs water from the vessel via the porous cup. By measuring this negative pressure (water absorbing pressure), the amount of moisture in the soil is obtained. Thus, this transducer is applicable not only to check for possible landslide or grasp the stability of a banking but also to know changing soil moisture and proper irrigation time in plant cultivation.| Performance | |
|---|---|
| Rated Capacity | -80kPa |
| 200 kPa for positive pressure | |
| Nonlinearity | Within ??0.5% RO |
| Hysteresis | Within ??0.5% RO |
| Rated Output | Approx. -0.8 mV/V (-1600??m/m) |
| Environmental Characteristics | |
|---|---|
| Safe Temperature Range | 0 to 80??C (non-freezing) |
| Compensated Temperature Range | 0 to 70??C (non-freezing) |
| Temperature Effect on Zero Balance | Within ??0.05% RO/??C |
| Temperature Effect on Output | Within ??0.05%/??C |
| Electrical Characteristics | |
|---|---|
| Safe Excitation Voltage | 10V AC or DC |
| Input Resistance | 350???2% |
| Output Resistance | 350???2% |
| Cable | 4-conductor (0.5 mm 2 ) chloroprene shielded cable, |
| 10 mm diameter by 1 m long, bared at the tip | |
| (Shield is not connected to the chassis.) | |
| Mechanical Properties | |
|---|---|
| Safe Overload Rating | 150% |
| Case | Stainless steel metallic finish |
| (excluding porous cup and level meter) | |
| Weight | Approx.3.5kg |
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