14-Channel AC Voltage Current Data Acquisition Module

14-Channel AC Voltage Current Data Acquisition Module

Product Overview
This product is a real-time measurement and acquisition module for 14 AC signals, which uses electromagnetic isolation to achieve isolation between each channel signal. The signal measurement uses a dedicated 24 bit high-precision true RMS measurement chip to achieve true RMS parameters of AC signals, with high accuracy, good stability, and fast sampling speed; Adopting the standard RS-485 bus MODBUS-RTU protocol. Widely used in column cabinets, aging testing equipment, production automation testing, computer room monitoring, enterprise energy consumption testing big data analysis, etc.
Product Features
1.14 AC voltage or current or voltage current combination measurement, measure the total frequency of one channel;
2. Fast speed, 14 independent AD synchronous sampling, can complete data acquisition of all 14 electrical parameters in as little as 20ms;
3. High precision, using 24 bit AD sampling, dynamic range of 1000:1, and linear current range of up to 0.1%;
4.20mS、40mS、60mS、80mS、100mS、400mS、1000mS Seven adjustable collection speeds, which means completing the measurement of all electrical parameters within the set time;
5. Multiple power supply methods, wide power supply 9-30VDC or 9-55VDC or 220VAC;
6. High reliability, each channel is isolated from each other, the power supply, communication, and the tested end are fully isolated, and the withstand voltage is greater than 2500V;
7. There are two options for setting the address and baud rate with a hardware dip switch, as well as software settings.
Performance metrics
1. Accuracy level: 0.2% FS, linear measurement range of one thousandth;
2. Current range: 20mA, 100mA, 1A, 5AAC, etc. can be customized;
3. Voltage range: 1V, 10V, 50V, 100V, 250V, 400V, 500VAC, etc. can be customized;
4. Frequency measurement: 40Hz-70Hz;
5. Input impedance: voltage channel>2 k Ω/V; current channel 0 Ω;
6. Overload capacity: 1.2 times the range is sustainable and measurable; Instantaneous (<50mS) current 5 times, voltage 1.5 times the range without damage;
7. Working temperature: -20 ℃ to+70 ℃;
8. Frequency response range: 30Hz-1000Hz
9. Data collection update time: 20mS, 40mS, 60mS, 80mS, 100mS, 400ms (default), 1000ms can be set;
Note: When the input AC signal frequency is not 50Hz, it is recommended to adjust the sampling speed to 400ms.
10. Isolation withstand voltage:>2500V DC;
11. Auxiliary power supply:+9V~30V or+9V~55V;
12. Rated power consumption:<0.8W (typical 24V power supply 27mA);
13. Output interface: RS485 (standard Modbus RTU communication protocol);
14. Data output: 14 AC voltage or current signals, 1 frequency signal;
15. Communication baud rates: 4800, 9600, 19200, 38400, 57600, 115200 bps; (Can be set up through software or hardware)
16. Data format: no parity/odd parity/even parity, 8 data bits, 1 stop bit/2 stop bits (1 or 0) optional;
17. Lightning surge: greater than 2KV;
18. Installation method: 35mm guide rail or screw installation; Appearance: 145X90X40 mm, screw installation: 135X70mm, installation aperture ф 5m.