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ES-2

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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California requires the following notice

⚠️ WARNING: This product may contain chemicals including ethylene glycol, lead, nickel, styrene and cadmium, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

ES-2

Specifications

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 °C

NOTE: Sensors may be used at higher temperatures under certain conditions; contact Customer Support for assistance.

Cable length

5 m (standard)
75 m (maximum custom cable length)

NOTE: Contact Customer Support if a nonstandard cable length is needed.

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

Measurement duration

Typical: 25 ms
Maximum: 50 ms

COMPLIANCE

Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)

California requires the following notice:

⚠️ WARNING: This product may contain chemicals including ethylene glycol, lead, nickel, styrene and cadmium, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

Support

Have a question or problem? Our support team can help.

We manufacture, test, calibrate, and repair every instrument in house. Our scientists and technicians use the instruments every day in our product testing lab. No matter what your question is, we have someone who can help you answer it.

Email: support.environment@metergroup.com

Phone US: +1 509-332-5600
Phone Europe: +49 89 12 66 52 0

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