Drain Gauge G3 Lysimeter
Tech Specs
TECHNICAL SPECIFICATIONS
Measurement Specifications
Drainage
Range: 0−61 mm bottom of wick, 61−100 mm top of reservoir chambers
Resolution: 0.2 mm
Accuracy: ±1.4 mm
Water Depth
Range: 0 – 10,000 mm
Resolution: 1.0 mm
Accuracy: ±0.25% of full scale at 20 °C
NOTE: Depth measurement accuracy assumes no abrupt temperature variations.
Temperature
Range: -40 to +60 °C
Resolution: 0.10 °C
Accuracy: ±1 °C
NOTE: The pressure transducer may be damaged or destroyed if frozen in ice. Remove sensor if the water temperature could drop below 0 °C (32 °F).
Bulk Electrical Conductivity (EC)
Range: 0 – 120 dS/m
Resolution: 0 dS/m
Accuracy: ±0.01 dS/m or ±10%, whichever is greater
NOTE: The EC measurement is corrected to a standard temperature of 25 °C.
Communication Specifications
Output
DDI Serial or SDI-12 communications protocol
Data Logger Compatibility
METER ZL6 data loggers and any data acquisition system capable of 4.0- to 15.0-VDC power and serial or SDI-12 communication
Physical Specifications
G3 Drain Gauge Dimensions
Mass: 20.0 kg (44.0 lb) with stainless steel DCT
14.0 kg (31.0 lb) with PVC DCT
14.0 kg (31.0 lb) with PVC DCT
DCT Dimensions
Length: 62.5 cm (24.6 in)
Inner Diameter: 25.4 cm (10.0 in)
Outer Diameter: 26.4 cm (10.4 in)
Width: 3.3 cm (1.3 in)
Reservoir Dimensions
Length: 81.3 cm (32.0 in)
Outer Diameter: 11.5 cm (4.5 in)
Access Tube Dimensions
Length: 180.0 cm (70.9 in)
Outer Diameter: 6.0 cm (2.4 in)
Material: Schedule 40 PVC
Sensor Dimensions
Length: 9.0 cm (3.5 in)
Diameter: 3.4 cm (1.3 in)
Sampling Tube Dimensions
Length: 3.0 m (118.1 in) standard, custom lengths available
Outer Diameter: 6.0 mm (0.24 in)
Material: Polyethylene
Operating Temperature Range
Minimum: 0 °C
Maximum: 60 °C
NOTE: The pressure transducer may be damaged or destroyed if frozen in ice. Remove sensor if water temperature could drop below 0 °C (32 °F). .
Cable Length
10.0 m (standard)
20.0 m
40.0 m (maximum)
20.0 m
40.0 m (maximum)
Cable Diameter
6 mm (0.25 in) with a minimum jacket of 0.80 mm (0.031 in)
Connector Types
Stereo plug connector or stripped and tinned wires
Stereo Plug Connector Diameter
6 mm (0.24 in)
Conductor Gauge
20 AWG/21 AWG drain wire
Electrical and Timing Characteristics
Supply Voltage Power to Ground
Minimum: 4.0 V
Typical: NA
Maximum: 15.0 V
Digital Input Voltage (Logic High)
Minimum: 2.8 V
Typical: 3.6 V
Maximum: 5.0 V
Digital Input Voltage (Logic Low)
Minimum: -0.3 V
Typical: 0.0 V
Maximum: 0.8 V
Digital Output Voltage (Logic High)
Minimum: NA
Typical: 3.6 V
Maximum: NA
Power Line Slew Rate
Minimum: 1.0 V/ms
Typical: NA
Maximum: NA
Current Drain (During Measurement)
Minimum: 0.5 mA
Typical: 4.0 mA
Maximum: 8.0 mA
Current Drain (While Asleep)
Minimum: NA
Typical: 0.4 mA
Maximum: 0.0 mA
Power Up Time (DDI Serial)
Minimum: 52 ms
Typical: NA
Maximum: 100 ms
Power Up Time (SDI-12)
Minimum: NA
Typical: 700 ms
Maximum: 750 ms
Power Up Time (SDI-12, DDI Serial Disabled)
Minimum: NA
Typical: 175 ms
Maximum: 200 ms
Measurement Duration
Minimum: NA
Typical: 450 ms
Maximum: 600 ms
Other
Compliance
EM ISO/IEC 17050:2010 (CE Mark)
GSA
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