The DYJ-2000AY series voltage monitor from Xuchang Chang'an Technology provides high‑reliability voltage measurement, data storage and multiple…
The DYJ-2000AY series voltage monitor is a high‑reliability, high‑stability instrument that continuously measures grid voltage signals, stores, statistics and analyses voltage quality. It supports up to three measurement channels and offers various data‑reading methods such as GSM SMS, 485 communication, USB flash drive, wireless RF, LAN and GPRS.
The device features a large LCD display, password‑protected settings for clock, voltage ratio, limits and communication parameters, and can store up to 12 months of data (adjustable to 1 month‑2 years). It includes a PC‑based management software that runs on Windows 9x/2000/XP and can generate reports in Excel format. This manual is written in Chinese.
| Measurement range | 80‑560 V |
|---|---|
| Measurement accuracy | ≤0.5 % |
| Statistical accuracy | ≤0.02 % |
| Clock accuracy | ≤±1 s/24 h |
| Sampling period | 1 sample/second |
| Power consumption (measurement circuit, basic model) | ≤5 VA |
| Data memory capacity | 12 months (adjustable 1 month‑2 years) |
| Power supply voltage | 100 V / 220 V / 380 V |
| Operating temperature | -20 °C ~ 60 °C |
| Relative humidity | 40 % ~ 90 % (20 °C) |
It can monitor one to three voltage channels simultaneously.
The instrument supports GSM SMS, 485 communication, USB flash drive, wireless RF (1 km), LAN, and GPRS.
The overall power consumption is ≤3 VA, and the basic measurement circuit consumes ≤5 VA.