14-Channel AC Voltage Current Acquisition Module

14-Channel AC Voltage Current 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.

Model

ZH-40141-14N2:14 channel AC voltage acquisition(RS485 or Ethernet)

ZH-40142-14N2:14 channel AC current acquisition(RS485 or Ethernet)

ZH-40143-14N2:14 channel current voltage acquisition(RS485 or Ethernet) 

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.