Intelligent Display and Control Isolator for 4-20mA Current Loop Signals: DIN 1X1 ISO 4-20mA (LED1) Series

  SunYuan DIN 1X1 ISO 4-20mA (LED1) Current Loop Signal Intelligent LED Display Isolation Controller, adopting low power consumption loop stealing technology, integrating display, alarm, isolation and transmission. The product contains current signal modulation and demodulation circuits, signal coupling and isolation conversion circuits, display and alarm control circuits. The very small input equivalent resistance makes the product's input voltage value reach an ultra-wide range (12~36VDC), in order to meet the user's need of signal isolation, display, alarm, and long-distance distortion-free transmission without the need of external power supply.The internal integration process and new technology isolation measures enable the device to achieve 3KDC insulation voltage and industrial grade wide temperature, humidity, vibration of the harsh environment requirements of the field.DIN1X1 ISO 4-20mA (LED1) series of products is very easy to use, using the standard DIN35 DIN rail mounting design, convenient for users to install and use. The products do not need external auxiliary power supply and other components to achieve 4-20mA current loop isolation and signal display control functions.  
    
    DIN 1X1 ISO 4-20mA (LED1) products with intelligent design, with a variety of functions that are not available in traditional products, the product is a passive design scheme, the 4-20mA analog quantity in the input circuit can be isolated and transmitted, and according to the set range of linear correspondence to the decimal digital display. This two-wire passive type of operation, without other auxiliary power supply, so the use of simple and convenient wiring, small size, high precision, low cost. The traditional embedded analog display meter adopts potentiometer adjustment, which has a single adjustment parameter, is not flexible and is greatly affected by temperature. Compared with the traditional analog display meter, this intelligent digital display meter is operated by a combination of two buttons and controlled by the CPU of the central processor, which can realize the setting of various parameters such as zero point, full scale, decimal point, alarm, time delay and so on, which is highly flexible and practical. The digital display meter adopts LED display board, and each segment of the display board adopts constant-current driver, so that the brightness is uniform in the range of 4-20mA, and with reverse and over-current protection function. The products are widely used in industrial control, petrochemical, environmental protection, smart home, mining and other industries for temperature, pressure, displacement, flow, liquid level and other physical quantities of control point monitoring.   
    
     DIN 1X1 ISO 4-20mA (LED1) products are mainly used for the isolation and display of 4-20mA current signals from sensors, PLC, DCS control loops. The embedded digital display meter is used to measure the 4-20mA signal without external power supply but directly take power on the 4-20mA loop signal to measure. The displayed number is not a direct current measurement, but a preset value of 4mA and 20mA, and the measured current value is linearly displayed relative to these two preset values.  For example, if 4mA is set to 0 and 20mA is set to 8000, the meter will display 2000 when 8mA is input and 4000 when 12mA is input; and if 4mA is set to 1000 and 20mA is set to -1000, the meter will display 0 when 12mA is input and -500 when 16mA is input.The maximum display range of the digital display meter is 9999, i.e. four digits; the minimum is -1999. It also has the function of alarm signal output with two isolated switching outputs, which can be displayed, controlled and alarmed locally. Two alarm points are set, and there are positive and negative alarm direction settings. Alarm point of the alarm object for the display readings, alarm LED panel last decimal point flashes, alarm information through the digital optocoupler isolated output alarm signal. The upper limit or lower limit alarm value and alarm mode can be modified by the programmer for the products that need to set alarm function, please refer to the "Display Meter Instruction Manual" for the detailed setting method.