ZH-44123D 12-Channel High-Precision Isolated DC Data Acquisition Module
Product No.: ZH-44123D
12 Independent Channels:Measure multiple DC signals simultaneously.
Up to 1/100,000 Resolution:High-resolution measurement for demanding industrial applications.
Fully Isolated Inputs:Independent isolation between channels, power, communication and measurement inputs.
Modbus RTU and Modbus TCP communication for easy system integration.
Product Introduction
The ZH-4412#D series is a high-precision, fully isolated 12-channel DC data acquisition module designed for simultaneous measurement of DC voltage, DC current, or a combination of both.
Each channel uses an independent 24-bit high-precision ADC, providing high-resolution measurement with product resolution down to 1/100,000 of the rated range. All 12 channels support synchronized acquisition, with the fastest data update time of 20 ms.
The module provides RS485 / Modbus RTU communication, while Ethernet versions support Modbus TCP and RS485 / Modbus RTU. Measurement channels, communication interfaces, and power supply are electrically isolated to improve system reliability and reduce interference in industrial environments.
Product Model Selection
Select the model according to measurement type, communication interface and customized input range.
Model
Measurement
Channels
Communication
Resolution
ZH-44121D-14M2/#V
DC Voltage
12
RS485 / Modbus RTU
1/100,000
ZH-44122D-14M2/#A
DC Current
12
RS485 / Modbus RTU
1/100,000
ZH-44123D-14M2/#V#A*
DC Voltage + Current
12
RS485 / Modbus RTU
1/100,000
ZH-44121D-34M2/#V
DC Voltage
12
Ethernet + RS485
1/100,000
ZH-44122D-34M2/#A
DC Current
12
Ethernet + RS485
1/100,000
ZH-44123D-34M2/#V#A*
DC Voltage + Current
12
Ethernet + RS485
1/100,000
Key Features
1.12 independent DC measurement channels
2.Independent 24-bit ADC for each channel
3.High-precision resolution down to 1/100,000 of rated range
4.Synchronized acquisition across all 12 channels
5.Adjustable data update time from 20 ms to 400 ms
6.DC voltage, DC current, or voltage/current combination versions
7.Full electrical isolation between measurement channels
8.Isolated power supply and communication interfaces
9.Isolation withstand voltage greater than 3000 V DC
10.RS485 communication with Modbus RTU
12.Ethernet communication with Modbus TCP
13.Bipolar measurement support
14.Floating-point data output
15.Maximum-value and average-value data output
16.Active data upload function
17.Software or hardware configuration
18.9–55 V DC auxiliary power supply
19.35 mm DIN-rail or screw mounting
20.Customized voltage and current ranges
Technical Specifications
Applications
Parameter
Specification
Number of Channels
12
ADC
24-bit ADC per channel
Resolution
Up to 1/100,000 of rated range
Measurement Type
DC Voltage / DC Current / Voltage + Current
Data Update Time
20 / 40 / 60 / 80 / 100 / 200 / 300 / 400 ms
Voltage Range
75 mV / 10 V / 30 V / 60 V / 100 V / 300 V / 500 V / 700 V DC, customizable
Current Range
10 mA / 20 mA / 100 mA / 1 A / 2 A / 5 A / 10 A DC, customizable
High-Precision Accuracy
0.05%
Linear Accuracy
0.01%
Isolation
>3 kV DC
Operating Temperature
-40°C to +70°C
Power Supply
9–55 V DC
Typical Power Consumption
<2 W
Ethernet Version Power
<3 W
Communication
RS485 / Ethernet
Protocol
Modbus RTU / Modbus TCP
Baud Rate
4800–115200 bps
Mounting
35 mm DIN Rail / Screw
Dimensions
120 × 110.6 × 45.5 mm
Weight
Approx. 330 g
1.Battery Testing
Monitor multiple DC voltage and current channels during battery and battery-pack testing.
2.Energy Storage Systems
Acquire multiple voltage and current signals from energy storage equipment for system testing and performance evaluation.
3.Product Aging Testing
Monitor multiple electrical parameters simultaneously during long-duration product aging and load testing.
4.Industrial Automation
Integrate multi-channel DC measurement into automated production and inspection systems.
5.Power Electronics Testing
Measure multiple DC voltage and current signals in power supplies, converters, controllers and other power electronic equipment.
6.Automated Test Systems
Use synchronized multi-channel acquisition for laboratory and production test equipment.
7.Electrical Measurement
Suitable for applications requiring isolated and high-precision DC voltage and current measurement.
Why Choose the ZH-4412#D Series?
1.High Measurement Density
One compact module provides 12 independent acquisition channels, reducing the number of devices required in multi-point measurement systems.
2.High-Precision Measurement
Independent 24-bit ADCs and high-resolution measurement provide detailed DC signal acquisition.
3.Strong Electrical Isolation
Isolated measurement channels help reduce interference and improve system reliability when measuring signals from different electrical potentials.
4.Synchronized Acquisition
All channels can be acquired synchronously, making the module suitable for applications where multiple electrical parameters must be compared at the same time.
5.Flexible Communication
RS485 / Modbus RTU and Ethernet / Modbus TCP options simplify integration with PLCs, industrial PCs and automation systems.
6.Customized for Your Application
Voltage and current measurement ranges can be customized during production to match the customer's actual measurement requirements.
FAQ
1. How many channels does the module support?
The ZH-4412#D series provides 12 independent DC measurement channels for simultaneous voltage and/or current acquisition.
2. What is the measurement resolution?
The high-precision D version provides resolution down to 1/100,000 of the rated measurement range, with an independent 24-bit ADC for each channel.
3. Does the module support both DC voltage and current measurement?
Yes. The ZH-44123D version supports combined DC voltage and current measurement. The channel configuration can be customized according to your application requirements.
4. What communication protocols are supported?
The module supports RS485 / Modbus RTU and Ethernet / Modbus TCP, depending on the selected model.
5. Is each measurement channel electrically isolated?
Yes. The 12 measurement channels are mutually isolated, and the power supply, communication interface and measurement inputs are also electrically isolated. The isolation withstand voltage is greater than 3000 V DC.
6. Can the voltage and current measurement ranges be customized?
Yes. The input ranges can be customized according to your requirements during production. The customized measurement range cannot be changed after the product has been manufactured.
