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Model：
HD-ZXEC
Introduction：
Online Conductivity Meter measures the conductivity and total ion concentration of water online by applying voltage across two parallel plates. Widely used for drinking water, pure water, wastewater and industrial water monitoring....
Conductivity expresses numerically the ability of a solution to conduct current. The conductivity of water is related to the amount of inorganic acids, bases and salts it contains: at low concentrations the conductivity increases with concentration, so this indicator is often used to estimate the total ion concentration or salt content of water. The measuring principle of a conductivity meter is to place two parallel plates in the solution under test, apply a certain potential (usually a sine-wave voltage) across the plates and then measure the conductance flowing between them, which is determined by voltage and current. In practice conductivity is the resistance of the solution between the parallel electrodes, measured according to Ohm's law.
1. LCD screen with a Chinese interface, making operation simple and convenient.
2. High-precision 24-bit ADC signal acquisition and anti-interference circuit for higher precision and greater stability.
3. Photoelectrically isolated 4–20 mA current output and RS-485 / RS-232 communication interface.
4. Optional upper-computer online acquisition software from our company for data acquisition and analysis.
5. One-key calibration with standard solution; built-in watchdog with data retention exceeding 10 years after power failure.
6. Dual-relay upper and lower limit alarm output.
7. Physical measurement method; no electrolyte consumption and no periodic maintenance.
8. Special functional requirements can be customised.
| Measuring range | 0–200 μS/cm, 0–2,000 μS/cm, 0–20 mS/cm, 0–50 mS/cm |
| Resolution | 0.1 μS/cm, 1 μS/cm, 0.01 mS/cm |
| Power supply | AC 220 V / DC 24 V, input power ≥ 5 W |
| Output | RS485, 4–20 mA, relay (optional), HART protocol (optional), NB / GPRS / LORA communication (optional) |
| Protection class | IP65 (controller) / IP68 (sensor) |
| Operating temperature | 0–60 °C (non-freezing) |
| Storage temperature | −10–60 °C |
| Installation | Top-mount / top flange / side-wall / pipe / immersion |
| Controller dimensions | Wall-mounted, 156 × 150 × 85 mm |
| Cut-out size | Wall-mounted, 156 × 94 mm |
| Cable length | 10 m standard (extendable on request) |
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