User manual for the Chen Zhu CZBS120-EX.I intrinsically safe field digital display instrument, covering installation, configuration and safety.
The CZBS120-EX.I is an intrinsically safe field digital display instrument designed for 4‑20 mA loop systems such as transmitters and controllers. It features ultra‑low power consumption, LCD back‑light display, multiple display modes and explosion‑proof certification.
The manual provides detailed instructions on wiring, configuration of measurement parameters, safety precautions, installation options (horizontal, vertical, wall‑mount, pipe‑mount) and accessory fitting, as well as troubleshooting and warranty information. This manual is written in Chinese.
| Loop voltage drop | ≤3.5 V |
|---|---|
| Maximum resolution | 5 µA |
| Display accuracy | 0.1 % FS (typical 0.05 % FS) |
| Measurable current range | 3.0 mA – 21 mA |
| Display mode | LCD with backlight, full‑scale constant brightness |
| Display range | -9.9…9.9 (configurable) |
| Temperature drift | 0.01 % FS/°C |
| IP rating | IP65, cast‑aluminum sprayed coating |
Press and hold the NEXT and PREV keys for 5 seconds, then press ENTER to access the menu.
The instrument’s loop voltage drop is limited to 3.5 V or less.
It is certified by the national explosion‑proof supervision station to GB3836.1, GB3836.4 and GB3836.20 standards.