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8-Way Ntc Thermistor Temperature Conversion to RS-485/RS232 Data Acquisition Temperature Signal Sensor¹

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Product Description 8-way NTC thermistor temperature conversion to RS-485/232, data acquisition module WJ226 Product features: Eight channel NTC temperature acquisition, isolated conversion to RS-485/232 output Can be quickly customized and linearized according to the NTC scale table Supports various NTC sensors such as 5K/10K/20K/100K Using a 12 bitAD converter, the measurement accuracy is better than 0.1% Isolation withstand voltage between signal input/output 1000VDC Wide power supply range: 8~32VDC High reliability, easy programming, and easy application Standard DIN35 rail installation, convenient for centralized wiring Users can program module addresses, baud rates, etc Supports Modbus RTU communication protocol and automatic recognition protocol Industrial flame retardant shell, RS485 port surge protection Typical applications: NTC temperature signal measurement RS-485 remote I/O, data acquisition Intelligent building control, security engineering and other application systems RS-232/485 bus industrial automation control system Industrial site signal isolation and long-distance transmission Equipment operation monitoring Measurement of sensor signals Acquisition and recording of industrial field data Development of medical and industrial control products Thermistor signal acquisitionProduct selection:WJ226- Z- T- Input type: NTCNTC1K NTC5K NTC10K NTC20K NTC50K NTC100KOther NTCTemperature range: T T1:-20-100℃ T2: 0-100℃ T3: 0-150℃ T4: 0-200℃ T5: 0-400℃ Tu: User definedcommunication interface 232: Output as RS-232 interface 485: Output as RS-485 interfaceSelection Example 1: Model: WJ226-NTC10K-T1-485 indicates Input: NTC10K, Temperature Range:-20~100 ℃, Output: RS-485Selection example 2: Model: WJ226-NTC20K-T4-485 indicates input: NTC20K, temperature range: 0~200 ℃, output is RS-485Selection example 3: Model: WJ226-NTC3K-Tu-232 indicates input: NTC3K, temperature range: 0~50 ℃, output is RS-232Company ProfileShenzhen Weijunrui Technology Co., LtdSince: 2011Specialty: The company's main products include analog acquisition modules, signal isolators/conversion modules, and signal transmittersCapacity: Produce 10000 per monthAdvanced 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, etcGlobal ShowroomsFactory Capabilities WJ226 General Parameters: (Typical @+25 ℃, Vs is 24VDC) Input type: NTC thermistor input Accuracy: 0.1% Temperature drift: ± 50 ppm/℃ (± 100 ppm/℃, maximum) Bandwidth:-3 dB 10 Hz Conversion rate: 5 Sps (factory default value, users can modify the conversion rate by issuing commands.) You can set the AD conversion rate to 2.5 SPS, 5 SPS, 10 SPS, and 20 SPS by sending commands. (Channel conversion rate=AD conversion rate/number of open channels) Note: Please recalibrate the module after modifying the conversion rate, otherwise the measured data may have deviations. You can also specify the conversion rate when placing an order, and we will recalibrate the product according to the conversion rate you require when it leaves the factory. Common moderejection (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: RS-485 or RS-232 standard character protocol and MODBUS RTU communication protocol Baud rates (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be selected by software The address (0-255) can be selected by software Communication response time: 100 ms maximum Working power supply:+8~32VDC wide power supply range, with internal anti reverse and overvoltage protection circuits Power consumption: less than 1W Working temperature:-40~+85 ℃ Working humidity: 10~90% (no condensation) Storage temperature:-40~+85 ℃ Storage humidity: 10~95% (no condensation) Isolation withstand voltage: 1KVDC between input/output, 1 minute, leakage current 1mA The RS-232/RS-485 output and power supply are grounded together. Surge resistant voltage: 3KVAC, 1.2/50us (peak) Dimensions: 120mm x 70mm x 43mm Function Introduction: The WJ226 signal isolation acquisition module can be used to measure eight NTC thermistor signals. 1,Analog signal input 12 bit acquisition accuracy, 8-channel NTC thermistor signal input. All signal input ranges have been calibrated before the product leaves the factory. Users do not need to calibrate. 2,Communication Protocol Communication interface: 1 standard RS-485 communication interface or 1 standard RS-232 communication interface, please specify when ordering and selecting. Communication Protocol: Supports two protocols, the character protocol defined by the command set and the MODBUSRTUcommunication protocol. The module automatically recognizes communication protocols and can achieve network communication with various brands of PLCs, RTUs, or computer monitoring systems. Data format: 10 digits. 1 start bit, 8 data bits, and 1 stop bit. The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be set; The communication network can reach a maximum distance of 1200 meters and is connected through twisted pair shielded cables. High anti-interference design of communication interface, ± 15KV ESD protection, communication response time less than 100mS. 3,anti-interference Checksums can be set as needed. There is a transient suppression diode inside the module, which can effectively suppress various surge pulses, protect the module, and the internal digital filter can also effectively suppress power frequency interference from the power grid.FAQQ: How to contact you?A: Please contact us via email or online customer service

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