2
Connector Types
3.5-mm stereo plug connector or stripped and
tinnedwires
Cable Length
5 m (standard)
75 m (maximum custom cable length)
Data Logger Compatibility
Any data acquisition system capable of 3.6- to
15-V power and serial or SDI-12 communication
Dimensions
9.6 cm × 3.5 cm × 1.5 cm
Sensor Diameter
3.2 cm
Dielectric Measurement Frequency
70 MHz
Measurement Time
150 ms
Output
RS-232 (TTL) with 3.6-V levels or
SDI-12 communication protocol
SPECIFICATIONS
MEASUREMENT SPECIFICATIONS
Water Temperature
Range: −9 to −100,000 kPa
(1.96 to 6.01 pF)
Resolution: 0.1 kPa
Accuracy: ±(10% of reading + 2 kPa)
from −9 to −100 kPa
Temperature
Range: −40 to 60 °C
Resolution: 0.1 °C
Accuracy: ±1 °C
Operating Temperature
−40 to 60 °C (0% to 100% RH)
No water potential measurement < 0 °C
NOTE: Sensors may be used at higher temperatures under
certain conditions; contact Customer Support forassistance.
Power Requirements
3.6 to 15 VDC, 0.03 mA quiescent,
10 mA maximum during 150-ms measurement
Supply Voltage (VCC) to GND
Minimum 3.6 VDC
Typical
Maximum 15.0 VDC
Digital Input Voltage (logic high)
Minimum 2.8 V
Typical 3.6 V
Maximum 3.9 V
Digital Input Voltage (logic low)
Minimum –0.3 V
Typical 0.0 V
Maximum 0.8 V
Power Line Slew Rate
Minimum 1.0 V/ms
Typical
Maximum
ELECTRICAL AND TIMING CHARACTERISTICS
PHYSICAL SPECIFICATIONS
Current Drain (during measurement)
Minimum 3.0 mA
Typical 3.6 mA
Maximum 10.0 mA
Current Drain (while asleep)
Minimum
Typical 0.03 mA
Maximum
Operating Temperature Range
Minimum –40 °C
Typical
Maximum 50 °C
Power Up Time (DDI serial)
Minimum
Typical
Maximum 100 ms
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