The 12-channel DC analog input acquisition module performs centralized measurement and converts it into digital signal output, capable of measuring 8 channels of current and 4 channels of voltage input signals. The multi-channel DC smart transmitter can be widely used in various industrial control and measurement systems, primarily measuring transmitters outputting signals such as pressure, temperature, flow, and electrical parameters...

Product Introduction

1. Overview
The main function of LORAWAN is to centrally measure and convert multiple standard DC transmitter signals into digital signal output, capable of measuring 8 channels of current and 4 channels of voltage input signals. The multi-channel DC smart transmitter can be widely used in various industrial control and measurement systems, primarily measuring 4–20mA or 0–10V signals output by transmitters for pressure, temperature, flow, electrical parameters, etc. The output is via communication interfaces RS485 or RS232, with a wide-range power supply of DC 9–30V, using the standard MODBUS-RTU communication protocol.
2. Product Models
DL-42123-34N3: 4 channels voltage, 8 channels current input, MODBUS protocol, 9–30V power supply;
DL-42121-34N3: 12 channels voltage input, MODBUS protocol, 9–30V power supply;
DL-42122-34N3: 12 channels current input, MODBUS protocol, 9–30V power supply;


3. Product Features
2 Uses 24-bit AD, high measurement accuracy, actual accuracy up to 0.2 class;
2 Wide dynamic range, better than 1000:1;
2 Uses plug-in terminal wiring, convenient for field use;
2 9V to 30V wide-range power supply, strong versatility;
2 High reliability, surge voltage resistance on power end up to 4KV or more;
4. Main Technical Indicators 
Input Signal
Input: 8 channels current and 4 channels voltage (Model 42123) or 12 channels voltage (Model 42121);
Input Range: Current and voltage combination: input 4–20mA, 0–10V;
12-channel voltage type input 50V; 12-channel current type input 0–20mA/4–20mA;
Overload Capacity: Overload 1.2 times range can be measured correctly; overload 2 times range input for 1S without damage;
Input Impedance: Current channel 110Ω; voltage channel > 100KΩ;
Data Update Cycle: 800mS;
Communication Output
Output Interface: RS-485, two-wire system, ±15KV ESD protection; or RS-232 interface, ±2KV ESD protection;
Communication Protocol: Standard MODBUS-RTU protocol;
Communication Rate: 1200, 2400, 4800, 9600 (default), 19200 bps, software configurable;
Parity: Odd, even, no parity (default), software configurable;
Module Address: 01H～FFH, factory default 01, software configurable;
Isolation: Isolation between voltage/current input and power supply/communication, isolation voltage 2500V DC;
Measurement Accuracy: 0.5 class;
Power Supply: DC 9～30V;
Operating Temperature: -20℃～60℃;
Storage Temperature: -40℃～85℃; Relative Humidity: 5%～95% non-condensing;
Installation Method: 35mm standard DIN rail mounting;
Dimensions: 122mm * 70mm * 43mm;