The four-channel full-scale digital display instrument has strong anti-electromagnetic interference capability and can stably work in a very harsh electromagnetic interference environment. It is designed and manufactured in strict accordance with the ISO9001 system requirements and adopts a surface mount process, with high integration. The full-scale number input can simultaneously adapt to various scale numbers of thermocouples, thermoresistors, voltage signals, current signals and remote pressure gauges.
This manual provides a complete overview of the four‑channel digital display instrument, including its strong EMI resistance, ISO‑9001 design, and ability to accept thermocouple, RTD, voltage, current and pressure inputs. It details the panel layout, parameter menus, and the modular output options for alarms, transmitters and communication.
The document also includes technical specifications, installation and wiring instructions, maintenance guidelines, and accessory listings, along with appendices for pressure‑transmitter calibration and D/A output correction. This manual is written in Chinese.
| Operating temperature | 0–50 ℃ |
|---|---|
| Relative humidity | ≤ 90 % |
| Power supply voltage | AC 85‑265 V 50/60 Hz or DC 24 V ±10 % |
| Basic error | ± (0.5 % F.S + 1 dig) |
| Input impedance (thermocouple) | ≥ 1 MΩ |
| Relay contact capacity | AC 5 A/240 V or DC 5 A/24 V |
| Isolation current output | 4‑20 mA (load < 750 Ω) |
| Isolation voltage output | 1‑5 V (load > 250 kΩ) |
The factory default password is 2000 and can be unlocked with any password.
It can be powered from AC 85‑265 V at 50/60 Hz or from DC 24 V ±10 %.