This document provides the user manual and specifications for MODEL 676pH/ORP display. The instrument is known for its stable performance, easy operation, and affordable price, making it a reliable choice for users.
The 676pH/ORP display is a compact instrument for measuring pH and oxidation‑reduction potential (ORP). It offers stable performance, simple operation, and a low price, making it a trusted model for laboratory and field use.
The manual explains how to install the unit, connect power and signal cables, perform pH calibration with standard solutions, and maintain the electrode. Safety precautions, warranty information, and troubleshooting tips are also included. This manual is written in Chinese.
| pH measurement range | 0.00‑14.00 pH |
|---|---|
| ORP measurement range | 1999 mV |
| pH accuracy | ±0.01 pH |
| Maximum load | 450 µA |
| Temperature compensation range | 0‑100 °C (PT‑100) |
| Operating voltage | 220 V AC ±15 % 50/60 Hz |
| Dimensions | 96 mm × 48 mm × 104 mm |
The electrode should be cleaned and recalibrated every two weeks to ensure measurement accuracy.
The instrument has a one‑year warranty from the date of purchase; quality‑related repairs are performed free of charge.