High-Precision Analog Signal Acquisition Module with RS485 Output

• Customization: Available
• Conductive Type: Bipolar Integrated Circuit
• Input Type: Differential
• Model NO.: WJ20
• Integration: GSI
• Operating Temperature: -40℃ - 85℃
• Resolution: 12 Bit
• Shape: DIP
• Technics: Semiconductor IC
• Input Type1: Input Current / Voltage Input
• Accuracy: 0.1%
• Temperature Drift: ± 50 Ppm / ºC (± 100 Ppm /
• Input Resistance: 2K (0-1mA Current Input) >200K(0-5V/0-10V Volt
• Bandwidth: -3 dB 10 Hz
• Communication Response Time: 100 Ms Maximum
• Power Supply: +8 ~ 32VDC Wide Range Power Supply
• Power Loss: Less Than 1W
• Transport Package: Wayjunr
• Specification: 120mm x 70mm x 43mm
• Trademark: wayjunr
• Origin: Guangdong, China
• Production Capacity: 9999
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 0.200kg

Product Description

Two Channels Analog Signal to RS485/232 Converter
(WJ20 series A/D Converter, defaults MODBUS RTU) 

Features:
>> 2-CH analog signal acquisition, isolated RS-485/232 output
>> 16-bit AD converter, testing accuracy>0.1%
>> Can Program and calibrate modules accuracy via RS-485/232 interface
>> Signal input/output: 3000VDC Isolation
>> Wide power supply: 8~32VDC
>> High reliability, easy programming, easy installation.
>> Can program setting module address, baud rate
>> 0-5V voltage signal or 4-20mA current signal input
>> Defaults MODBUS RTU communication protocol
>> DIN35 Rail-mounted
>> Small size (79.00x70.00x25.00mm)
Typical Application:
>> Signal measurement/monitoring/control
>> RS-485 remote I / O, data acquisition
>> RS-232/485 bus industrial automation control system
>> Industrial field signal data acquisition and recording
>> Industrial field signal isolation and long-term transmission
>> Medical, industrial product development
>> 4-20mA or 0-5V signal acquisition 

Product Selection:	WJ20
output voltage or current signal value	Communication interface
U1:0-5V            A1:0-1mA U2:0-10V         A2:0-10mA U3:0-75mV      A3:0-20mA U4:0-2.5V        A4:4-20mA U5:0-±5V         A5:0-±1mA U6:0-±10V       A6:0-±10mA	485: Input is RS-485 interface 232: Input is RS-232 interface
Sample 1: part No.:WJ20-A4-485 4-20mA input signal,output is RS485 interface	Sample 2: part No.:WJ20-U1-232 0-5V input signal,output is RS232 interface	Sample 3: part No.:WJ20-U2-485 0-10V input signal,output is RS485 interface

Company Profile

Shenzhen Weijunrui Technology Co., Ltd

Since: 2011
Specialty: The company's main products include analog acquisition modules, signal isolators/conversion modules, and signal transmitters
Capacity: Produce 10000 per month
Advanced Features:
Switching to TCP/network/remote IO module, Modbus RTU to TCP, RS232/485 to Ethernet, analog signal (current/voltage/thermistor/frequency/displacement/speed/pulse) isolation transmitter, mV differential signal amplifier, isolation amplifier, micro power DC-DC module power supply, etc

Product Overview:

Function Description:

 WJ20 series products realize the signal acquisition between sensor and host, to measure analog signals. WJ20
products can be applied to RS-232/485 bus industrial automation control system,4-20mA / 0-5V signal measurement,
monitoring and control, and signal isolation and long-term industrial transmission and so on.
Products include power supply isolation, signal isolation, linearization, A/D conversion and RS-485 serial
communication. Each serial interface can connect up to 255 pieces WJ20 Series modules, communication mode defaults
MODBUS RTU protocol, the default address is 01, baud rate is 9600, data format is 10bits, 1 start bit, 8bits data bit, 1
stop bit, no check. Also supports ASCII code communication protocol, baud rate can been set by the code, with other
manufacturers control module hang in the same RS-485 bus for easy programming. WJ20 series products are based on SCM's intelligent monitoring and control system, users set the calibration value,
address, baud rate, data format, checksum status, and configuration information are all stored in nonvolatile memory
EEPROM.
 WJ20 products are according to industry standard design, isolation between signal input / output, can withstand
voltage 3000VDC, high anti-interference ability and reliability. Operating temperature range is - 45 ~ +85 °C. 

WJ20 signal isolation acquisition module can be used to measure two channels voltage or current signal,
1. Analog signal input
 16-Bit acquisition accuracy, two channels analog signal input. All products signal input range have been calibrated. In
use, users also can program calibration easily.
 About the specific current or voltage input range, please see product selection.
2. Communication protocol
 Communication Interface: one channel standard RS-485 communication interface, or one standard RS-232
communication interface, specify when ordering.
 Communication Protocols: defaults MODBUS RTU protocol, the default address is 01, baud rate is 9600, data
format: 10bits, 1 start bit, 8 data bits, 1 stop bit, no check. Can be programmed using the kind of communication
protocol, can be achieved with PLC, RTU of many Brands or computer monitoring system for network communication.
 Data Format: 10 Bits. 1 start bit, 8 data bits, 1 stop bit.
 Address: (0 to 255) and baud rate (2400,4800,9600,19200,38400,57600,115200bps) can be set, the most
long-distance about communication networks is up to 1200 meters, through the twisted-pair shielded cable.
Communication interface of high anti-jamming design, ± 15KV ESD protection, communication response time is less
than 100mS.
 3. Anti-jamming
 According to need to set the checksum. Module internal has transient suppression diodes, can inhibit a variety of surge
pulse, protection module, and internal digital filter can also be well suppressed from the grid frequency interference. 

FAQ

Q: How to contact you?
A: Please contact us via email or online customer service