Description
The HH2 Moisture Meter provides instant readout from most Delta-T soil moisture sensors
• Immediate display of water content
• Store up to 1500 readings
• Reads ML3, SM150T, PR2, PR2 SDI-12 or WET Sensor
Overview:
The HH2 offers impressive functionality in a compact hand-held unit designed for field use. Readings are displayed on the LCD and can be stored to memory for later download to a PC. Up to 1500 time-stamped readings can be stored.
Applications:
• Reads ML3*, SM150T* and WET Sensors
• Reads PR2/6 and PR2/4 Profile Probes (analog and SDI-12)
Simple versatile operation:
The HH2 can be operated with one hand for convenience in the field. Each timestamped reading includes a unique sample number, a plot identification letter (A to Z) and a sensor location number (1 to 255).
Data is transferred to a PC using the RS232 cable provided with each unit. See ordering information for USB connection.
HH2Read software downloads data in comma-separated ASCII (.csv) format ready for opening in Excel. Data can be merged with existing downloaded data, using the free Dataset Import Wizard.
Reading Profile Probes:
The HH2 Moisture Meter can take readings from a PR2 Profile Probe wherever access tubes have been installed. With an installed array of access tubes, one HH2/PR2 combination can profile large areas quickly. The HH2 auto-detects the number of sensors in each Profile Probe.
The HH2 can also display readings from SDI-12 Profiles Probes.
Water deficit:
This reading indicates the amount of water needed (in mm) to restore the soil to field capacity, down to a user-defined rooting depth. The HH2 calculates water deficit from the user-defined field capacity and from readings taken either from a single sensor or the individual sensors of a Profile Probe. The HH2 User Manual contains tables of standard soil classifications and their associated field capacities.
Soil types:
Standard calibrations for generalised mineral and organic soils are supplied with the HH2 for use with the ML3*, Profile Probe and SM150T* Sensors. The HH2 also enables up to 5 extra user-defined soil calibrations to be characterised and stored. The soil calibration can be switched at any time during the collection of data, and can be specified separately for each sensor position on a single Profile Probe.
