The SM1 soil moisture sensor is an inexpensive capacitance probe which measures soil moisture in all kinds of soils in a wide range of depths, from 30cm to 150cm. All models come with one sensor every 10cm.
The SM1 soil moisture sensor has an exceptionally low power consumption which allows several sensors to be connected to one RTU. It has a larger sphere of influences than most probes, extending beyond a 10cm radius around the access tube.
The access tube has a diameter of just 32mm (1.25”) which allows for a quick and easy installation. A SM1 probe up to a length of 60cm can normally be installed by pushing the access tube into an undersized hole. Beyond this length a slurry installation is recommended.
The soil moisture sensor is made up of two sensor boards, which are either 30cm long with 3 sensors, or 50cm long with 5 sensors. Each sensor board has a centrally located temperature sensor. Therefore each probe comes with up to 3 soil temperature sensors.
The SDI-12 interface makes it compatible with a wide range of data loggers. The probe requires a voltage between 5.5V and 12V DC to power it.
Manufactured by: Adcon Telemetry
Model: SM1 Soil Moisture Sensor (Discontinued)
Soil moisture monitoring
Rain and weather monitoring
|Temperature Range||-55°C to +70°C|
|Cable||5m, Polyethylene (PE)|
|Probe Material||UV resistant PVC|
|Connector||7-pin M9 male Binder connector|
|Power Supply||5.6V .. 12VDC|
|Measuring Range||0 ... 100%|
|Number of Sensors||1 sensor every 10cm|
|Measuring Range||-55°C to +70°C|
|Accuracy||± 0.5°C (0 to 70°C)|
|Temperature Sensors||Up to 5: one every 30cm; at 15, 45,
75, 105 and 135cm
|Available Probe Lengths||30, 60, 90, 120, 150cm|