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Model：
HD-ASLZ
Introduction：
Online Silver and Sulfide Ion Analyzer measures silver and sulfide ions in liquids with an ion-selective membrane and 24-bit ADC for precise measurement. Widely used for drinking water, wastewater and environmental protection....
The online silver-sulphide ion analyzer is a precision instrument for the determination of silver-sulphide ion concentration in liquids. A silver-sulphide ion selective membrane is fitted at the front of the sensor. When the sensor is immersed in the sample, silver-sulphide ions in the sample diffuse through the selective membrane into the internal electrolyte, where the cation activity rises and creates a small potential difference against the reference electrode. This potential difference is proportional to the silver-sulphide ion concentration. The circuit amplifies the potential difference and converts it into a direct concentration reading.
1. LCD screen with a Chinese / English interface, making operation simple and convenient.
2. Imported TI chip 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. Adjustable hysteresis (dead band) prevents the relay from switching too frequently.
5. Built-in watchdog; data retention after power failure exceeds 10 years.
6. Dual-relay upper and lower limit alarm output.
7. The sensor is temperature-compensated, which corrects the influence of temperature on the measured value.
8. Special functional requirements can be customised.
| Measuring range | 0.01–108,000 ppm or 0.003–32,000 ppm |
| Resolution | 0.01 ppm or 0.001 ppm |
| Accuracy | ±2 % of calibration value |
| 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 | 0–40 °C (non-freezing) |
| Storage temperature | −10–40 °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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