Electrical Conductivity and Temperature Sensor


The ES-2 Electrical Conductivity and Temperature Sensor is designed to measure the electrical conductivity of water in a pipe or tank.  When you pair the new ES-2 with a TEROS 12 soil moisture sensor in the soil, you’ll begin to develop a complete picture of the salts that are going into your system, as well as the salts remaining in your soil or substrate.

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University of Idaho
Brigham Young University
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Measurement Specifications
Temperature Range: –40 to 60 °C

Resolution: 0.1 °C

Accuracy: ±1 °C

Bulk EC Range: 0 to 120 dS/m

Resolution: 0.001 dS/m

Accuracy: ±0.01 dS/m or ±10% (whichever is greater)

Communication Specifications
Output DDI serial or SDI-12 communication protocol
Data logger compatibility METER ZL6 data loggers and any data acquisition system capable of 3.6- to 15-VDC power and serial or SDI-12 communication
Physical Specifications
Dimensions Length: 10.9 cm (4.30 in)

Width: 2.4 cm (0.95 in)

Thread: 1/2-in National Pipe Thread

Operating temperature range Minimum: –40 °C
Maximum: 60 °CNOTE: Sensors may be used at higher temperatures under certain conditions; contact Customer Support for assistance.
In-line pipe connector type 1-in Tee socket pipe fitting
Cable length 5 m (standard)

75 m (maximum custom cable length)NOTE: Contact Customer Support if a nonstandard cable length is needed.

Prop 65 warning

Connector types 3.5-mm stereo plug connector or stripped and tinned wires
Electrical and Timing Characteristics
Supply voltage (VCC to GND) Minimum: 3.6 V

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) Typical: 3.6 V
Power line slew rate Minimum: 1.0 V/ms
Current drain (during measurement) Minimum: 20 mA

Typical: 20 mA

Maximum: 28 mA

Current drain (while asleep) Typical: 0.03 mA
Power up time (DDI serial) Maximum: 100 ms
Power up time (SDI-12) Minimum: 100 ms

Typical: 200 ms

Maximum: 250 ms

Power up time (SDI-12, DDI disabled) Typical: 125 ms
Measurement duration Typical: 25 ms

Maximum: 50 ms

COMPLIANCE EM ISO/IEC 17050:2010 (CE Mark)

Prop 65 warning

A photo of ES-2 electrical conductivity and temperature sensor

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