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Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
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technical article
Liquid crystal display regulator with small size, multiple channels and low power consumption
2012-2-2 10:12:28


核心是先进的CPU,设计思想是基于数字化、智能化、网络化的更深层次开发,它的主要特点是: The core of the liquid crystal display regulator is an advanced CPU. The design idea is based on the deeper development of digitalization, intelligence, and networking. Its main features are:

1. Supplemented by the design of large-scale integrated circuits;

2, FLASH large-capacity storage, intelligent conditioning signals;

3. SmartBus bus and high-resolution graphic LCD display;

4. Exquisite structure design, the product has ultra-thin design, small volume and many channels;

5. Not only low power consumption, high accuracy, and strong versatility; the operation is also quite stable, which greatly improves the reliable performance;

6. The communication interface used is RS-232C / RS-485, which supports the standard MODBUS-RTU protocol to achieve remote monitoring; it has realized signal acquisition, recording, display, processing, communication, alarm and other functions.

已广泛应用于电力、制药、酿造、石化、石油、造纸、印染、冶金、建材、化工、热处理和水处理等各种工业 The LCD display regulator produced by Jinhu Dongxiang Instrument Co., Ltd. has been widely used in various industries such as power, pharmaceutical, brewing, petrochemical, petroleum, papermaking, printing and dyeing, metallurgy, building materials, chemical industry, heat treatment and water treatment.

In the field, as well as in science and education industries, we have also developed a dedicated controller customized for the equipment on the liquid crystal display regulator platform.


Overview


This series of products adopts the surface-encapsulated modular technology, which greatly improves the anti-interference ability of the instrument. It has functions such as display, control, transmission, communication, and universal signal input.

Display and control of various physical quantity detection signals such as speed, and can perform high-precision linear correction on various non-linear input signals. Can be widely used in electric power, metallurgy, chemical industry, petrochemical, paper printing and dyeing, brewing, tobacco, aerospace base

field.


The latest jumper-free technology is used to make the input port have universal signal input function. By changing the internal parameters, a variety of input signals can be realized (various thermocouples, thermal resistors, remote pressure, mV, standard voltage / standard current). letter

No.) for easy switching. The optimized design and continuous improvement of the production process of the circuit board reduce the temperature drift and improve the anti-interference performance to ensure the stability and reliability of the product in the long-term work. Using high brightness LED

Digital display and high-resolution light bar display (proportion display)


The display is clearer and more intuitive.


The output circuits are all optically isolated and have strong anti-interference ability. With serial communication interface, it can carry out two-way communication with various devices with serial interface to form a network control system. Available in a variety of standard form factors for a variety of measurements

Control the occasion. The whole machine adopts a snap-in structure, which is very easy to install.

Scope of application


表是智能型、高精度的双路LCD显温度、压力、液位、测力、扭矩等物理量控制测量仪表,与两路温度、压力、液位、测力、扭矩传感器及变送 The liquid crystal display control instrument is an intelligent, high-precision dual-channel LCD display temperature, pressure, liquid level, force measurement, torque and other physical quantity control measurement instruments. give away

The device can be connected to form temperature, pressure, liquid level force measurement and torque measurement and control systems of various ranges and specifications.


Features


Universal input function (it is better to set each input type Sn as standard when ordering)


Automatic and manual calibration functions


Multiple protection, isolation design, strong anti-interference ability, high reliability


Good software platform with secondary development capabilities to meet special functions


Advanced modular structure, with powerful instrument chip, function combination and system upgrade are very convenient

Main Specifications


Basic error: 0.5% FS or 0.2% FS ± 1 word


Resolution: 1/20000, 14-bit A / D converter (maximum 18-bit A / D converter, specified when ordering)


Display mode: High-brightness LCD (blue screen and white text)


Input signal: Analog / thermocouple: B, S, K, E, J, T, WRe, etc.


Thermal resistance: Pt100, Cu50, Pt100.1

· Current: 0 ~ 10mA, 4mA ~ 20mA, etc. (input impedance≤250Ω)


Voltage: 0 to 5V, 1V to 5V, mV, etc. (input impedance ≥1MΩ)


· Remote pressure resistance: (1 ~ 379) Ω (please specify when ordering)


Sampling cycle: 0.2S (10 ~ 200 times / second, user selectable)


Switching alarm output: two-limit alarm or four-limit alarm, alarm mode and alarm sensitivity can be set, relay output contact capacity AC220V / 3A or AC220V / 1A. (Each channel can take up to 8 relay alarm outputs, user order

(Specify when necessary)


Transmission output: · DC 4mA ~ 20mA (load resistance≤300Ω)


· DC 0 ~ 10mA (load resistance≤1.5KΩ)


· DC 1V ~ 5V (load resistance ≥250KΩ)


· DC 0 ~ 5V (load resistance ≥250KΩ)


(Each channel can take up to 4 analog outputs, users need to specify when ordering).


Features: Control method · Select upper limit, lower limit or upper limit, lower limit control


Control setpoint, control setpoint and hysteresis can be set freely within full range


Temperature compensation: 0 ~ 50 ℃ temperature automatic compensation


Parameter setting · Panel touch button digital setting · Parameter setting value is permanently saved after power off


Parameter setting value password lock


Protection method: Thermocouple thermal resistance input disconnection alarm, relay output status LED indication


· Input over / under range alarm · Input over range flash alarm


· Automatic reset of abnormal operation


Ambient temperature: (-20 ~ 70) ℃ (after 30 minutes of running at room temperature, it can gradually withstand the extreme temperature)


(0 ~ 50) ℃ (Thermocouple signal input)


Relative humidity: ≤85% non-condensing avoid use in corrosive and flammable and explosive gas


Communication output: interface mode-isolated serial two-way communication interface RS485 / RS232 / Modem


Baud rate: 1200 ~ 9600bps


Feed output: DC24V / 30mA (max. 400mA, specified when ordering)


Power supply: switching power supply 85 ~ 265VAC / DC24V, power consumption below 4W


DX-100YJ series intelligent meters are based on advanced CPU, based on intelligent, digital, and network design ideas, supplemented by large-scale integrated circuits, large-capacity FLASH storage, intelligent signal conditioning, and SmartBus

And a new intelligent paperless recorder with a high-resolution graphic LCD display. The product has the characteristics of small size, multiple channels, low power consumption, high accuracy, strong versatility, stable operation, and high reliability. It has been widely used in power, metallurgy,

Petrochemical, petroleum, chemical, pharmaceutical, building materials, papermaking, printing and dyeing, brewing, science and education industries.