AQ4500 is a precision turbidity meter that uses a microprocessor and LED light source for measuring turbidity and absorbance. The instrument complies with measurement standards and can measure in multiple units. Additionally, the AQ4500 has an IP67 waterproof rating, can store and download data, and is suitable for both laboratory and field measurements.
The AQ4500 is a portable turbidity instrument that uses an LED light source and follows EPA 180.1 and ISO 7027 measurement standards. It supports multiple units such as %T, ASBC, and EBC, stores up to 100 data sets, and features an IP67 waterproof rating.
This manual covers the instrument’s display, keyboard functions, battery installation, settings menu, calibration procedures, measurement methods, connection options for printers and computers via RS‑232, troubleshooting steps, and detailed technical specifications. This manual is written in Chinese.
| Measurement range (EPA 180.1) | 0–4000 NTU |
|---|---|
| Resolution | 0.01 NTU (0‑9.99 NTU) |
| Accuracy | ±2 % + 0.01 NTU (0‑500 NTU) |
| Power source | 4 AA batteries |
| Battery life (alkaline) | ≈2500 h |
| Operating temperature | -40 °C to 60 °C |
| Waterproof rating | IP67 |
| Detector | Silicon photodiode |
| RS‑232 interface | Present |
The instrument uses four AA batteries; alkaline cells last about 2500 hours and lithium cells about 100 000 hours.
It can display %T (percent transmittance), ASBC, and EBC units.
The instrument meets the IP67 waterproof standard.