PARAMETERS | Soil humidity/temperature | Soil EC | Soil PH | Soil NPK | ||||
Range | H:0%-100% T: -40ºC~+80ºC | 0-20000us/cm | 3~9PH | 0~1999mg/kg | ||||
Accuracy | H:±3%(5%~95%,25ºC) T: ±0.5ºC(25ºC) | ±3% | ±0.3PH | ±2%F.S | ||||
Power supply | 12~30V DC | 12~30V DC | 12~30V DC | 12~30V DC | ||||
Long-term stability | H: ≤1%/year T: ≤0.1ºC/year | ≤1%/year | ≤5%/year | ≤5%/year | ||||
Working temperature | -40ºC~+80ºC | -40ºC~+80ºC | -20 ~+60ºC | 5 ~+45ºC | ||||
Working humidity | 0%-100% | 0%-100% | 5%-95% | 5%-95% | ||||
Response time | ≤1s | ≤1s | ≤10s | ≤1s | ||||
Signal output | 4~20mA,0~5V,RS485 | 4~20mA,0~5V,RS485 | 4~20mA,0~5V,RS485 | 4~20mA,0~5V,RS485 | ||||
Resolution | H: 0.1% T: 0.1ºC | 1us/cm | 0.1 | 1mg/kg(mg/l) | ||||
Protection | IP68 | IP68 | IP68 | IP68 |
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