The ES-2 Electrical Conductivity and Temperature Sensor is designed to measure the electrical conductivity and temperature of water in pipes and tanks. When paired with a TEROS 12 soil moisture sensor, it helps provide a more complete understanding of the salts entering an irrigation system and those remaining in the soil or substrate.
Specifications
Measurement Specifications
| Parameter | Specifications |
|---|---|
| Temperature | Range: –40 to 60 °C Resolution: 0.1 °C Accuracy: ±1 °C |
| Bulk Electrical Conductivity (EC) | Range: 0 to 120 dS/m Resolution: 0.001 dS/m Accuracy: ±0.01 dS/m or ±10% (whichever is greater) |
Communication Specifications
| Parameter | 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
| Parameter | Specifications |
|---|---|
| Dimensions | Length: 10.9 cm (4.30 in) Width: 2.4 cm (0.95 in) Thread: 1/2-in National Pipe Thread In-line pipe connector type: 1-in Tee socket pipe fitting |
| 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
| Parameter | Specifications |
|---|---|
| Supply Voltage | 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 |
Other
| Parameter | Specifications |
|---|---|
| GSA | View GSA details |
| Compliance | EM ISO/IEC 17050:2010 (CE Mark) |
| Prop 65 warning | Prop 65 warning |
Irrigation Water Monitoring
Greenhouse & Controlled Agriculture
Water Quality & Warer Monitoring
Fertilizer & Nutrient Management
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