Delta-T Devices - Model HH2 -Moisture Meter - Readout Unit

• Immediate display of water content
• Reads ML3, SM300, SM150, PR2 or WET sensor
• Stores up to 1500 time-stamped readings

The unit can be operated with one hand, for convenience in the field. Each time-stamped reading includes a unique sample number, a plot identification number (A to Z), and a sensor location number (1 to 255).

Data is transferred to a PC using the RS-232 cable provided with each unit. The HH2Read Windows PC software provides a data import wizard for direct download into Excel or other PC spreadsheet packages, or into irrigation scheduling programs. Alternatively, data can be downloaded in comma-separated ASCII data file (.CSV) format.

Data is transferred to a PC using the RS-232 cable provided with each unit. Please note that most PCs no longer have an RS232 port; for USB connection a USB to RS232 adapter cable is required (see Accessories).

• Input connections: 1 water content sensor or 1 WET Sensor
• Control outputs
• Readings stored: 1,500
• Recording rate
• Configuration: By keypad
• Communication options: RS232 / USB [1]
• Sensor excitation: 1 switched battery
• Power: 1 9V 6LR61 (PP3)alkaline
• Battery life (dependent on usage): ~ 5,000 readings
• Enclosure rating: IP54
• Temperature range: 0 to +40°C
• Display: 2 line x 16 character
• Size: 125 x 80 x 45mm
• Typical applications: Instantaneous reading of soil moisture / profiles/ WET Sensor

Sensor compatibility (maximum number of sensors that could be connected [2]

• ML3: without temp
• SM300: without temp
• SM150:
• PR2:
• PR2 SDI-12
• WET Sensor:
• EQ3: (mV only)
• Temperature
• Tensiometers
• Counters or Events
• Relay Output

[1] With USB to RS232 Adapter Cable type USB-RS232
[2] With appropriate expansion cards and power supply arrangements