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Wireless Soil Moisture Sensor
SKU#
WS433-SMT
Replaced by
Replaced SKU
WS433-SMT is a Sub-GHz wireless soil moisture, soil temperature and soil EC. The sensor can be used for up to 5 years with just 1 AA battery. Utilize advanced technology, Frequency Domain Reflectometry to deliver high accuracy and stable measurement of Soil Moisture, not affected by Fertilizer contents and Temperature like the simple Capacitance Moisture Sensor on the marker. The sensor will connect wirelessly to the Wireless Coordinator WS433-R then export the data to RS485/ ModbusRTU and from there easily connect to any monitoring and control system. LOS distance from sensor to receiver is 500m and can be extended by Extender. Sensors can be used for applications such as intelligent irrigation systems, greenhouses, pastures for cows, soil testing...
For Applications
Flood Monitoring, Infrastructure Monitoring, Smart Irrigation, Oil & Gas Pipeline Monitor
Reliable & Secured Wireless Connection
Sub-Ghz technology from Texas Instruments allows reliable wireless connection and secured data by AES-128
Pre-calibrated
Sensors are pre-calibrated at factory to deliver high accuracy and quick installation
5-Year Battery Operated
Easy to configure the time intervals of Data logging, Data sending and with Event processor allows the battery life up to 5 years!
High Accuracy
Utilize advanced technology, Frequency Domain Reflectometry to deliver high accuracy and stable measurement of Soil Moisture, not affected by Fertilizer contents and Temperature like the simple Capacitance Moisture Sensor on the marker
| Sensors | Advanced technology - Frequency Domain Reflectometry, Pre-calibrated at factory |
| Moisture range/ accuracy/ resolution | 0∼100%, acc ±3.0% , res 0.01% |
| Temperature range/ accuracy/ resolution | -30∼70℃, acc ±0.3℃, res 0.1℃ |
| EC range/ accuracy/ resolution | 0∼20 mS/cm, acc ±2.0% span, res 0.1 mS/cm |
| Measurement Volume | Dia. 70mm x Height 70mm |
| Wetted materials | 316L SS & thermoplastic |
| Sensor Dimensions | 71x45x16mm with probes 70mm and signal cable 2m |
| COMMUNICATION | |
| Data speed | Up to 50kbps |
| Tranmission distance | LOS 500m |
| Antenna | Internal Antenna, 3 dbi |
| Battery | 01 x AA 1.5, working time up to 10 years (depends on configuration) |
| Frequency Band | ISM 433MHz, Sub-GHz technology from Texas Instrument, USA |
| International Compliance | ETSI EN 300 220, EN 303 204 (Europe) FCC CFR47 Part15 (US), ARIB STD-T108 (Japan) |
| Vietnam Type Approval Certification | QCVN 73:2013/BTTTT, QCVN 96:2015/BTTT (EMC Compliance) |
| Security Standard | AES-128 |
| Operating temperature | -40∼60℃ (with AA L91 Energizer® battery) |
| Housing | Poly-carbonate, IP68 |
| Installation method | Plugs directly into the ground with a 500mm long plastic rod |
| Dimensions/ Net weight | 125x30x30mm (Wireless part only), < 60g |
| Box dimension/ Gross weight | 190x50x50mm, 100g |
Dimension
1/0
Application Notes
FDR sensors need to have good contact with the medium they measure with no air gaps;
Water content in soil must be higher than 20% for proper measurement;
Prevent direct sunlight on sensor housing for temperature not increase more than 50℃.
Water content in soil must be higher than 20% for proper measurement;
Prevent direct sunlight on sensor housing for temperature not increase more than 50℃.
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