No other soil moisture probe system enables you to monitor your soil water profiles with such ease and flexibility. Install an access tube into the soil, insert the PR2 Profile Probe and press the HH2 [Read] button to display an instantaneous reading, or connect the PR2 to a data logger (GP2 or DL6) and leave the system to record soil moisture changes over time.

Measurement	Volumetric water content
Accuracy	± 0.04 m3.m-3 (4%)  With soil-specific calibration
Soil moisture measurement range	Full accuracy over: 0 to 0.4 m3.m-3
	Full range : 0 to 1.0 m3.m-3
Salinity range	50 to 400 mS.m-1
	Salinity errors included in calibration
Temperature range	Full accuracy over: 0 to 40°C
Output	(ANALOGUE) 0 to 1.0 V differential PR2/6: x6 outputs, PR2/4: x4
	(SDI-12) Digital
Power requirement	(ANALOGUE) 5.5-15 V,  PR2/6: ~120 mA for 1s PR2/4: ~80 mA for 1s __________________________ Minimum 7.5 V with 100 m cable
	(SDI-12) Power consumption <60 mA at 12 V DC Sleep current <2 mA at 12 V DC
Environmental	IP67 (when installed in access tube)
Sample volume	-95% sensitivity within a cylinder of diameter 200mm
	Sample volume is weighted towards soil immediately surrounding the rods
Dimensions and weight	PR2/6: length 1350 mm  PR2/4: length 750 mm Both: 25.4 mm diameter PR2/6: weight 1.2 kg  PR2/4: weight 0.8 kg
Sensor calibrations	Individual sensors are interchangeable Recalibration advised every 3 years (depending on use)
Soil calibrations	Generalised Mineral and Organic soil calibrations are supplied

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