The SX711 pH/mV meter combines a micro‑processor, digital filtering, and a blue‑backlit LCD to provide high‑precision pH, millivolt and temperature readings. It is designed for field use in mining, power plants, water‑treatment and environmental monitoring, and meets IP57 dust‑ and water‑proof standards.
The manual explains the instrument’s layout, operation keys, storage and recall of measurement data, calibration procedures (one‑, two‑ and three‑point), and parameter settings such as buffer‑solution series, temperature compensation and auto‑shutdown. Safety and warranty information are also included. This manual is written in Chinese.
| pH measurement range | -2.00 ~ 19.99 pH |
|---|---|
| pH resolution | 0.1 / 0.01 pH |
| pH accuracy (electrode) | ±0.01 pH |
| pH accuracy (combined) | ±0.02 pH |
| mV measurement range | -1999 mV ~ 0 ~ 1999 mV |
| mV resolution | 1 mV |
| mV accuracy | ±0.1% FS |
| Data storage capacity | 200 measurement groups |
| Power source | 2 × AA 1.5 V batteries |
| Dimensions (instrument) | 65 × 120 × 31 mm |
| IP protection rating | IP57 |
| Operating temperature range | 0 ~ 100 °C (auto compensation) |
| Operating humidity range | ≤85 % RH |
| Certifications | ISO9001:2000, CE, CMC |
The instrument can store up to 200 measurement groups (100 in pH mode and 100 in mV mode).
It is powered by two AA batteries (1.5 V each).
The meter meets an IP57 dust‑ and water‑proof rating.
The meter supports one‑, two‑ or three‑point automatic calibration. For three‑point calibration, the user sequentially immerses the pH electrode in pH 4.00, pH 7.00 and pH 10.01 buffer solutions, confirming each step when the LCD shows the calibration icon.