NTC thermistor temperature to network Modbus TCP and MQTT, WiFi acquisitionmodule WJ326

Product features:

●Convert resistors such as NTC10K/NTC20K to standard Modbus TCP protocol

● Supports communication protocols such as TCP Server, UDP, MQTT, etc

● Built in web page function, data can be queried through web pages

●Wide power supply range: 8~32VDC

●High reliability, easy programming, and easy application

●Standard DIN35 rail installation, convenient for centralized wiring

●Users can set module IP addresses and other parameters on the webpage

●Low cost, small size, modular design

● Dimensions: 79 x 69.5x 25mm

Typical applications:

● Signal measurement, monitoring, and MQTT reporting

●TCP network, data collection

●Intelligent building control, security engineering and other application systems

●Industrial automation control system based on TCP network

●Industrial site signal isolation and long-distance transmission

●Equipment operation monitoring, MES system

●Measurement of sensor signals

● Acquisition and recording of industrial field data

●Development of medical and industrial control products

●NTC10K/NTC20K temperature signal acquisition

Product Overview:

The WJ326 product is an IoT and industrial Ethernet acquisition module that enables transparent data exchangebetween sensors and networks. The analog data from sensors can be forwarded to the network.The WJ326 series products include power conditioning, NTC10K/NTC20K resistance signal acquisition, andWiFinetwork interface communication. The communication method adopts MODBUS TCP protocol. TCPis atransportlayer based protocol that is widely used and a reliable connection oriented protocol. Users can directly set moduleIPaddresses, subnet masks, etc. on the webpage. Can be used for monitoring and controlling the operationof sensordevices. The WJ326 series products are intelligent monitoring and control systems based on microcontrollers, whereusersetmodule IP addresses, subnet masks, and other configuration information are stored in non-volatile memory EEPROM. The WJ326 series products are designed and manufactured according to industrial standards, withstronganti-interference ability and high reliability. The working temperature range is -45 ℃to+80 ℃.Function Introduction: The WJ326 remote I/O module can be used to measure temperature signals from one thermistor, such as NTC10K/NTC20K. 1. Temperature signal input 16 bit acquisition accuracy, 1 temperature signal input. All signal input ranges have been calibratedbeforetheproduct leaves the factory. During use, users can also easily program and calibrate themselves. 2. Communication Protocol Communication interface: WiFi network interface. Can connect to WiFi within the local area network. Communication protocol: MODBUS TCP protocol is adopted to achieve industrial Ethernet data exchange. It canalso communicate with modules through TCP sockets. Network cache: 2K bytes (for both sending and receiving) Communication response time: less than 10mS. 3. Anti interference There is a transient suppression diode inside the module, which can effectively suppress various surge pulsesandprotect the module

Selection example 1: Model: WJ326-NTC10K-T1-WiFi X represents 1 channel NTC10K, -20~100 ℃signal input,output as WiFi network interface, antenna as suction cup antenna Selection Example 2: Model: WJ326-NTC100K-T2-WiFi-W represents 1 channel NTC100K, 0~100 ℃signal input,output as WiFi network interface, antenna as external antenna

WJ326 General Parameters:

(Typical @+25 ℃, Vs is 24VDC) Input type: NTC resistor input Accuracy: 0.1% Temperature drift: ± 50 ppm/℃ (± 100 ppm/℃, maximum) Bandwidth: -3 dB 10 Hz Conversion rate: 16FPS (factory default value, users can modify the conversion rate on the webpage.) You can set the AD conversion rate to 2SPS, 4SPS, 8SPS, 16SPS, 32SPS, 50SPS, 80SPS, 100SPSbysendingcommands Common mode rejection (CMR): 120 dB (1k Ω Source Imbalance @ 50/60 Hz) Normal mode suppression (NMR): 60 dB (1k Ω Source Imbalance @ 50/60 Hz) Input protection: overvoltage protection, overcurrent protection Communication: MODBUS TCP communication protocol or TCP socket character protocol or MQTT protocol Web page: Supports web access module and web page setting module parameters. Interface: WiFi network interface. Communication response time: 100 ms maximum Working power supply:+8~32VDC wide power supply range, with internal anti reverse and overvoltage protectioncircuits Power consumption: less than 3W Working temperature: -45~+80 ℃

Working humidity: 10~90% (no condensation) Storage temperature: -45~+80 ℃ Storage humidity: 10~95% (no condensation) Dimensions: 79 mm x 69.5mm x 25mm