8-Channel Fully Isolated DC Data Acquisition Module 0-20mA 0-75mV
Product No.: ZH-44084
Mounting: 35mm DIN rail
Current Range: 20mA,100mA,1A, 5A,10A DC (customizable)
Voltage Range: 75mV,1V,5V,10V,50V,100V,250V,400V,500V DC (customizable)
Measurement Type:True RMS,supports both unipolar and bipolar measurement
8-Channel Fully Isolated DC Data Acquisition Module Modbus RTU/TCP Transducer
Product Overview
This product is a real-time measurement and acquisition module for comprehensive collection of electrical parameters of 8-channel DC loads. It uses high-speed isolation devices to achieve isolation between each channel signal. The signal measurement adopts a dedicated 24 bit high-precision true RMS measurement chip to measure effective value parameters such as current, voltage, power, and accumulated electricity. It has high accuracy, good stability, and fast sampling speed; Adopting the standard RS-485 bus MODBUS-RTU protocol. Widely used in street lamp monitoring, production automation detection, computer room monitoring, enterprise energy consumption detection big data analysis, etc.
Model Selection
ZH-44084-*4M2:8 channel DC power acquisition module(RS485 or Ethernet communication for your choices)
ZH-44081-*4M2:8 channel DC voltage module(RS485 or Ethernet communication for your choices)
ZH-44082-*4M2:8 channel DC current acquisition module(RS485 or Ethernet communication for your choices)
ZH-44083-*4M2:8 channel DC current and voltage combo acquisition module(RS485 or Ethernet communication for your choices)
ZH-4408*-*4M2:8 channel DC and AC universal acquisition module(RS485 or Ethernet communication for your choices)
Key Features
1.Measurement of voltage, current, power, and accumulated power of 8-channel DC loads, capable of universal measurement for both AC and DC;
2. Fast speed, 8-channel independent AD synchronous sampling, can complete data acquisition of all 8 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%;
4.10mS,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. It has both unipolar and bipolar measurement functions and can be selected for use;
6. High reliability, 8 channels are isolated from each other, power supply, communication and 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;
8. Plug and unplug terminals, easy to use, exquisite appearance, flame-retardant ABS;
Technical Specification
20mS, 40mS, 60mS, 80mS, 100mS (default), 400MS, 1000MS can be set
Note: When the input is an AC signal with a frequency other than 50Hz, the sampling speed needs to be adjusted to 400mS.
no parity/odd parity/even parity, 8 data bits, 1 stop bit
Or special method: no verification, 8 data bits, 2 stop bits (the 9th bit can be set to 1 or 0)
Note: This product defaults to software modification at the factory, with parameters including Address 1, baud rate 9600, no checksum, 8 data bits, and 1 stop bit.
Parameter
Specification
Accuracy level
0.2% FS
Current range
1mA, 20mA, 100mA, 1A, 5A, 10ADC, etc. can be customized (can measure uA level current)
Voltage range
75mV, 1V, 5V, 10V, 50V, 100V, 250V, 400V, 500VDC, etc. can be customized
Input impedance
voltage channel>2 k Ω/V; current channel sampling voltage less than 0.15V
Overload capacity
1.2 times the range is sustainable and measurable; Instantaneous (<50mS) current 5 times, voltage 1.5 times the range without damage
Working temperature
-20 ℃ to+70 ℃
Frequency response
0-1000Hz (for AC/DC universal products)
Data collection update time
Isolation withstand voltage
>2500V DC
Auxiliary power supply
+9V~30V or+9V~57V
Rated power consumption
<1.5W (typical 24V power supply 56mA)
Output interface
RS485 RS485 (standard Modbus RTU communication protocol)
Data output
8 channels of DC voltage, current, power, and accumulated electricity
Communication baud rates
4800, 9600, 19200, 38400, 57600, 115200 bps; (Can be set up through software or hardware)
Data format
Lightning surge
2KV
Installation method
35mm rail installation; Appearance size: 120X110.5X50mm
Application
1.Product Aging Test Equipment
2.Production Automation Testing
3.Non-Standard Automation Equipment
4.Industrial DC Load Monitoring
Why You Choose Us
1.Reliable Industrial Standards:
Offering dependable industrial signal acquisition and automation hardware.
2.Wide Operating Range:
Built for rugged industrial environments with an operating temperature range from -40 to+70.
3.Flexible Configuration:
Supports hardware DIP switches for setting addresses and baud rates alongside software configuration options, plus standard Modbus-RTU or TCP protocols.
FAQ
Q1: Does this module store historical data internally?
A: No, this product functions strictly as a real-time signal acquisition and monitoring module without internal historical storage or data logging capabilities.
Q2: How fast is the data acquisition?
A: It features 8 independent AD simultaneous sampling channels that can complete data acquisition for all 8 channels in as fast as 10ms.
Q3: What communication interfaces and protocols are supported?
A: It offers RS485 or Ethernet interfaces supporting standard configurable Modbus-RTU or Modbus-TCP communication protocols.
