VH400 Soil Moisture Sensor Probe Specifications
Power consumption: < 13mA
Supply Voltage: 3.5V to 20 VDC.
Dimensions See drawing.
Power on to Output stable: 400 ms
Output Impedance: 10K ohms
Operational Temperature: -40ºC to 85ºC
Accuracy at 25°C: 2%
Output: 0 to 3V related to moisture content
Shell Color: Red
Voltage Output Curves: Curves, Piecewise...
A miniature, value-priced, waterproof data logger for temperature and light monitoring applications; stores 52K measurements.
IMPORTANT INFORMATION
Requires HOBOware software and either an Optic USB Base Station or a HOBO Waterproof Shuttle (U-DTW-1).
HOBOware Pro is required when using the HOBO Waterproof Shuttle. See compatible items below.
The RSTAR Affinity data logger is designed to connect a variety of field analog and digital sensors to the RSTAR Affinity web-based dashboard. Each data logger can be configured to support up to five instruments of varying types.
Instrument and data logger configuration is mediated through secure and authenticated Bluetooth (BLE).
Instrument readings are communicated in real-time by low-power wide area network (LPWAN) through an RSTAR Affinity gateway. LPWAN protocols supported include LoRaWAN for long-range outdoor applications (up to 15 km).
Standalone data logging is supported by the synching of instrument data by local authenticated download in the RSTAR Affinity Field app.
ITEM SPECIFICATION
Dimensions : 159 mm (L) x 120 mm (W) x 87 mm (H) (enclosure only) 163 mm (L) x 185 mm (W) X 87 mm (H) (enclosure + wall mounting) Total Mass : 500 g to 550 g Housing Material : PBT Ingress Protection Marking : IP67 rated Mounting Options : Wall, pole, mounting kit available Antenna Options : External: +3 dBi and +5.8 dBi (N type connector)
General Specifications
ITEM SPECIFICATION
Temperature Operating Range From : -40°C to 60°C Lifespan : 10-year service life
BLE (Bluetooth Low Energy) Radio Specifications
Bluetooth : BT 5.0 single mode Frequency : 2.402 – 2.480 GHz Raw Data Rates :125 kbps, 500 kbps, 1 Mbps, 2 Mbps Maximum Transmit Power : +8 dBm Low Power Listen Mode : Continuous
LORA (Long Range) Radio Specifications
Operating Regions LoRaWAN US915 LoRaWAN EU868 LoRaWAN EU433 LoRaWAN AS923-1/2/3/4 LoRaWAN AU915Refer to RST for the best frequency for your region. Protocols : LoRaWAN® 1.0.1 Range : Up to 14 km (at 900 MHz) in open country, depending on frequency and antenna
Power Specifications
Battery voltage : 3.6V Number of Cells : 3 primary battery cells Battery Cell Size : D Recommended Battery Cell : Saft LSH20 Battery Nominal Capacity : 13.0 Ah @ 20°C per cell Battery Life Expectancy (Hourly readings) : 1 x VW Piezometer @ 20°C = ~10 yrs 100 Segment ShapeArray @ @ 20°C = ~3 yrs
RS-485 Interface Specifications
Part ID : IIM-RS-485
Contact RST for full sensor list compatibility Supply Power : 12 VDC up to 300 mA Protocols Supported : RS485 Serial Data Rate : 9600 to 115200 Baud configurable through RSTAR Affinity digital suite. Serial Port : Half-duplex Protection : 1500 VDC isolation on the 12 V 3000 VDC isolation on TTL signals Isolation ICs are EN62368-1 certified
Vibrating Wire Specifications Vibrating Wire + Vibrating wire pair part ID IIM-VW-VW Vibrating Wire + Thermistor pair part ID IIM-VW-TH Excitation Voltage 5 V Resonant Frequency Measurement Range 300 Hz to 7,000 Hz Resonant Frequency Resolution 0.11 Hz (1 part in 65,000) Resonant Frequency Accuracy ± 0.7 Hz (0.01% FS) Protection Tran 1500 VDC isolation on the 5V 3000 VDC isolation on TTL signals Isolation ICs are EN62368-1 certified ESD protection to ±2KV silent protection for instrument ports
Thermistor Specifications
ITEM SPECIFICATION
Thermistor pair + Thermistor pair part ID IIM-TH-TH Vibrating Wire + Thermistor pair Part ID IIM-VW-TH Measurement Range 0 Ohm to 196 mOhm Measurement Resolution 0.183 Ohm Accuracy : ± 0.1°C Protection : 1500 VDC isolation on the 12 V 3000 VDC isolation on TTL signals Isolation ICs are EN62368-1 certified
Product Details
Affinity Data Logger
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