Product Description of TWC-301 Multi-channel Temperature Recorder: ◆ Adopting the latest large-scale integrated circuits and carefully designed with components from internationally renowned manufacturers. ◆ Using a high-speed and high-performance 32-bit ARM microprocessor, the screen response time is less than 0.2 seconds, and it can simultaneously detect, record, display and alarm for 12 channels of signals. ◆ 5.6-inch imported SHARP 320X240 dot matrix TFT high-brightness color graphic liquid crystal display, with CCFL backlight, clear image and wide viewing angle. The screen brightness can be adjusted freely. ◆ Fully isolated universal input, capable of inputting multiple types of signals. No jumper is required, and it can be configured through software. ◆ New type of switching power supply, which can work normally within the range of 85VAC~265VAC. ◆ Integrated hardware real-time clock, and the clock can run accurately even in case of power failure. ◆ Provides isolated power distribution of +24VDC for the transmitter. ◆ Fully aluminum sealed housing and internal shielding plate ensure that the instrument works normally in harsh environments. ◆ A large-capacity FLASH memory chip stores historical data, and the data will never be lost even in case of power failure. ◆ 16-channel relay alarm output signals. ◆ Capable of inputting various standard signals, such as Fr, 20mA, 5V, S, B, K, T, E, J, R, N, Pt100, Cu50, Cu53, BA1, BA2, 350Ω, 20mV, 100mV, 10mV, WRe, F1, F2. ◆ The full-scale accuracy of the signal is ±0.2%. ◆ Complete isolation between channels. ◆ Can provide isolated power distribution. ◆ Provides a standard 4-20mA output software. ◆ Chinese menu configuration, displaying engineering tag numbers and engineering units. The software password lock ensures the security of user configuration. ◆ The displayed value range of engineering quantities is wide, and it can display 5-digit values: -9999~19999. ◆ Alarm display, indicating the lower-lower limit, lower limit, upper limit and upper-upper limit alarms of each channel at the same time. It can record the latest 15 alarm messages. ◆ Supports the function of flow accumulation. ◆ 4 groups of temperature and pressure compensation, supporting the input of compensation signals, with optional constants, and providing various compensation models, such as commonly used compensation models for superheated steam, saturated steam, pressure compensation, etc. ◆ Supports the display of vacuum degree in scientific notation. ◆ The curve paper movement mode can be set to horizontal or vertical. ◆ The display of every 4 groups of curves can be freely combined, and the curve color can be customized. ◆ Built-in GB2312 second-level Chinese character library (6500 Chinese characters). ◆ With the brand-new T6 input method, it is convenient to operate. It supports Chinese pinyin input, and selectable input of numbers, English, special symbols, subscripts and superscripts, etc. It adopts international standard coding to solve the input problems of special units and Chinese tag numbers. ◆ Customizable combined input of Chinese tag numbers and units. Communication ◆ Standard serial communication interfaces: RS-485 and RS-232C. ◆ Supports the standard Modbus RTU communication protocol and the standard Modbus TCP communication protocol, and provides various data types, such as percentage values, engineering quantities, cumulative quantities, etc. ◆ Uses a USB2.0 interface to transfer and back up historical records, and supports 4G and 8G USB flash drives. ◆ The historical record files can be recognized by Windows. ◆ Externally connected to a miniature printer, which can manually print data and curves, and automatically print data regularly to meet the on-site printing needs of users.