Two-wire linear electronic ruler displacement sensor signal isolation transmitter IC:ISO R-P-O series
Product Category: Displacement Sensor Signal Isolation Amplifier
Input: 0-50Ω,0-100Ω,0-200Ω,0-500Ω,0-1KΩ,0-2KΩ,0-5KΩ,0-10KΩ Output: 4-20mA,0-20mA,0-5V,0-10V,1-5V,0-±5V,0-±10V,0-±20mA
Isolation Mode: non-isolated Isolation Voltage: 3000VDC
Package: SIP7,SIP12,DIN35 Traffic Watch: times
Remarks: Two-wire linear electronic ruler displacement sensor signal isolation transmitter IC
Keywords: linear   transmitter   displacement   sensor   signal isolation   
Product Description
Features:
● Direct input of resistance, electronic ruler or displacement sensor signal
● Accuracy error level: non-isolated type 0.1; isolated type 0.2
● Built-in linearization processing and long-line compensation circuit (non-linearity <0.05%)
● Auxiliary power supply and signal input and output 3KVDC three isolation (fully isolated)
● Auxiliary power supply: 5V, 12V, 15V or 24V DC single power supply
● Input potentiometer signal: 0-50Ω/0-500Ω/0-2KΩ/0-10KΩ, etc.
Output standard voltage signal: 0-2.5V/0-5V/0-10V/1-5V/etc.
Output standard current signal: 0-10mA/0-20mA/4-20mA, etc.
● IC module, electronic ruler embedded, waterproof box and DIN35 rail mounting method
● Industrial temperature range: - 40 ~ + 85 °C
 
Typical application:
● Electronic ruler, angle sensor signal isolation, acquisition and transformation
● Displacement, potentiometer signal acquisition isolation and control
● Industrial site ground interference suppression
● The resistance signal is converted into a standard analog signal
● Distance measurement and alarm
● Analog signal remote distortion-free transmission
● CNC machine tools, rail transit equipment displacement control isolation safety barrier

The SunYuan ISO V-4-20mA and ISO R-P-O series isolation transmitters are hybrid integrated circuits that convert the displacement resistance signal into a linear standard signal with a resistance value. The circuit integrates a set of multi-channel high-isolation DC/DC power supplies on the same chip. Several high-performance signal isolators and resistor linearization, long-line compensation, and interference suppression circuits are especially suitable for converting resistance signals into standards. Signal, displacement signal transmission and distortion-free remote transmission, industrial field electronic ruler, angle sensor signal isolation, acquisition and transformation.
 
        The chip integrates high-efficiency DC-DC, which can generate two sets of isolated power supplies for the internal input terminal amplifier circuit, modulation circuit power supply and output terminal demodulation circuit, conversion circuit and filter circuit. SMD process structure and new technology isolation measures enable the device to achieve: 2500VAC three isolation between the working power supply, signal input and output, and meet the industrial requirements of wide temperature, humidity, vibration and harsh working environment.
 
The ISO V-4-20mA and ISO R-P-O series of displacement signal isolation amplifiers are very easy to use and require only a few external components to achieve isolated transmission of the displacement resistance signal. And can realize the function of industrial field displacement control signal in one input, two output, one input and four output.
The SY series of input and output non-isolated products have high precision and linearity (better than 0.05F.S), and are commonly used in precision measuring instruments such as built-in electronic rulers and angular displacement signal transmitters. The product is small in size and easy to install. It can be placed inside the sensor to directly convert the displacement and angle signals into a standard 4-20 mA signal. The full scale and zero point can be adjusted and calibrated by the user through an external potentiometer.
Detailed technical data download: linear electronic ruler, displacement, potentiometer, angular displacement dedicated two-wire 4-20mA transmitter
 
         Industrial field sensors and instrumentation, PLC, DCS and other control systems often fail to work properly due to system interference, active signals, passive signals, active loads, passive load signal collisions and impedance matching problems. Proper selection of the isolation amplifier transmitter can effectively solve signal interference, impedance matching, and conflicts between the signal source and the control system. The ISO series isolation amplifier transmitter products developed by Shunyuan Technology can meet the isolation, amplification and conversion of instrumentation, PLC, DCS, DSP equipment and analog signals collected by various sensors such as temperature, displacement, pressure and frequency. Transfer after matching. Sensor and instrumentation connection scheme reference data download: industrial field sensor and instrumentation, PLC, DCS, PAC, PCC and other display control system common connection scheme
 
        Isolation amplifier transmitters are generally used in industrial environments where the power environment is complex. In order to prevent various interferences or damages to the product in the field environment, we are based on years of production experience and feedback from users in different environments. Under the premise of being affected, the product protection measures will be improved and improved gradually. For DIN 35 rail-mounted products, these protection circuits are placed in the product and can be used directly by the user. For IC packaged products, the protection circuit cannot be loaded due to the size space constraints. Therefore, please use the environment to install a protection circuit for the signal input, output, and auxiliary power of the IC package product.


Product application example:
SunYuan displacement sensor special transmitter adopts input filter, input protection circuit, high-precision voltage regulator reference IC power supply circuit, amplification conversion circuit, zero full-scale adjustment circuit and other conversion circuits. The external power supply can be powered by AC or DC power supply.
 
One, two-wire voltage signal isolation power distribution module (IC package)
Two-wire voltage signal isolation distributor in SIP12 Pin package: ISO V-4-20mA, is a two-wire voltage signal isolation power distribution module, which can realize two-wire voltage input power distribution type sensor and bridge (weighing) detection circuit Voltage signal distribution.
The product is designed as a low-cost, small-size standard SIP12 Pin flame-retardant IC package, which contains current signal modulation circuit, electromagnetic isolation conversion circuit and signal reduction and demodulation circuit. The power supply voltage range is 12-32VDC, the input equivalent resistance is small, the linearity is high, and the 2500VAC isolation withstand voltage can be achieved between the signal input and output. The product is very convenient to use. The customer only needs to add a small number of peripheral devices at the front end of the product to realize the voltage signal isolation output function of the two-wire voltage input and distribution type sensor and the bridge (weighing) detection circuit. Typical application circuit diagram.
 
1. Typical application diagram of ISO V-4-20mA product
Two-wire voltage signal sensor isolated power distribution typical application



 (weighing) detection circuit voltage signal isolation and distribution typical application:



Second :  isolated resistance signal isolation transmitter IC
The IC R-P-O-A series of resistor signal isolation amplifiers for IC packages enable isolation, amplification and conversion of resistive signals. 3000VDC three isolation between the working power supply, signal input and output.
 
Resistance Signal Isolation Amplifier ISO R-P-O-A Product Typical Application Diagram


Third, non-isolated SY R-P-O (Sip10 Pin) resistance signal conversion amplifier IC
Displacement signal conversion amplifier SY RPO series products can linearly or angularly shift the output signal of the sensor to be converted into a standard two-wire 4-20 mA analog signal. The full scale and zero point can be adjusted and calibrated by the user through an external potentiometer. .
1, resistance signal non-isolated amplifier SY R-P-O product typical application diagram



 

Simple and economical analog signal amplifier transmitter: SY U-P-O/SY A-P-O

SY series low cost, small size and simple isolation amplifier isolation transmitter is a series of economical products by Shunyuan developed according to the user's different technical requirements for isolation, amplification and conversion of analog signals in different environments of industrial sites. In the project design, the user can isolate, amplify, convert and transmit to the analog quantity,and make judgments for whether need to full isolation to signal input and output between with working power supply,two isolation or non-isolated of the field analyses during the process of transimtter. according to the characteristics of the live signal to choice different specifications, then reduce manufacturing costs greatly , reduce device size and optimize system architectures under the premise of meeting the technical requirements.
Low cost, small size, simple and applicable isolation amplifier isolation transmitter: SY series
1. VI/IV conversion low cost small volume isolation amplifier. New product promotion price:  usd$5.6 / PCS
Product introduction: SY U-P-O series voltage signal and SY A-P-O series current signal isolation amplifier, it is use small size (SIP 8Pin), low cost design. mainly used to solve these conversion problem between non-standard analog quantity and standard analog signal ,such as the problem between sensor and instrument, PLC and DCS: 0.4-2V/0-5V/1-5V/0-10V/0-20mA/4-20mA etc. which have high precision and high linearity features, The 2000VDC isolation voltage between the working power supply and signal channel can control the interference of surge and common mode harmonics in power supply systems. The product is very convenient to use, free of zero point and gain adjustment. It can achieve the simple conversion and amplification function of the industrial field analog signal without external adjustment potentiometer and other components.
Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=89



2. The low cost and small size of displacement potentiometer resistance signal transmitter. New product promotion price:  usd$5.6 / PCS
Product introduction: SY R-P-O series displacement transducer is a low cost, small volume hybrid integrated circuit that converts the displacement resistance signal into a linear standard signal according to the size of change. The transmitter use the input filter, input protection circuit, high-precision voltage-stabilized reference IC power supply circuit, amplification conversion circuit, zero-degree full-scale adjustment circuit and other conversion circuits. The external power supply can be powered by a switching power supply or a linear regulated power supply. it has high precision and linearity (better than 0.05F.S), and commonly used in precision measuring instruments such as built-in electronic rulers and angular displacement signal transmitters.
 
Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=35

3.Two-wire 4-20mA differential signal acquisition conditioner. New product promotion price: usd$7.1/ PCS
Product introduction: SY C-A-P-O series is a two-wire 4-20mA differential signal acquisition and conditioning chip. The internal of IC contains differential signal acquisition, conditioning, and conversion circuitry, The standard input equivalent resistance allows the IC to collect differential signals from the sensor loop to meet the needs of the user's microcontroller to receive signals. (±9 ~ ±15V) Ultra-wide range power supply or single power supply mode, can achieve the required accuracy requirements of the site without any adjustment loop, and realize the transmission and transmission function of the two-wire 4-20mA signal.  
Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=45

4. Two-wire low cost 4-20mA loop feed acquisition conditioner. New product promotion price: usd$7.1 / PCS
Product information:SY 4-20mA-P is a non-isolated two-wire 4-20mA analog signal acquisition conditioner chip with low cost design.The input active 4-20mA current signal can be converted into a passive control signal output to control the two-wire power supply (feed mode) 4-20mA current loop. and acheive the matching of sensor signal acquisition and active load of analog input and output interface, and effectively solved the problem of collecting the active 4-20 mA current signal and the power supply conflict of the two-wire current loop power supply loop receiving port.
The output mode is designed for the two-wire power supply circuit in which the 24VDC and the sampling resistor (two-wire instrument) are connected in series. It is match with these analog input port which commonly used in industrial sites such as the analog input interface board (host computer), PLC, DCS or other instrument.
Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=109


5.Two-wire passive I/V converter. New product promotion price: usd$8.5 / PCS
Product information:SY 4-20mA-O is a low cost, small size, two-wire passive 4-20mA transform to voltage signal conversion IC that can converts an active 4-20mA signal into a voltage signal output. The IC use two-wire input loop power supply way, which has a unique high-efficiency signal loop stealing technology and needn’t an external working power supply. make the user design more simplify and reduce user wiring costs.The small input equivalent resistance can make IC collect the current signal from the sensor signal output loop, and can achieve a voltage drop of ≤6V when the input 20mA signal is reached , so that can meet the needs of the user to achieve long distance, distortion free transmission conversion of the sensor signal in the no-power field environment.
 

Product introduction:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=42

6.Low cost speed signal acquisition transmitter IC. New product promotion price: usd$8.8 / PCS

Product introduction:SY S-P-O series low cost speed signal acquisition transmitter is a mixed integrated circuit that amplifies the speed sensor signal, sine wave, sawtooth wave signal or tiny pulse signal into a square wave signal which is completely consistent with the input frequency.
It is suitable for the low cost design solutions that convert amplitude, sine wave, etc. into a standard square wave pulse signal. And it is widely used in the detection of motor running speed and the detection of rotating systems such as automotive ABS brakes.
 
Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=28

7. Frequency conversion analog signal FV / FI isolation transmitter. New product promotion price: usd$10/ PCS
Product introduction:SY F-P-O series frequency signal low cost and small size two isolated transmitter, It is a mixed integrated circuit that converts pulse frequency signals into linear analog signals (FV/FI conversion). Products are widely used in power electronics, wireless data transmission, remote monitoring, medical equipment, industrial automation and other industries.

Product information:
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=41

 

8. Pt100, Cu50 thermal resistance signal two isolation transmitter. New product promotion price: usd$10/ PCS 
Product introduction: SY Z-W series low cost and small size two isolated transmitters, it is designed for low cost design of scene single channel temperature signal acquisition and monitoring, It can converts the temperature signal collected through the RTD sensor into a linear standard analog signal. it is widely used in temperature sensor signal conversion, amplification and distortion-free remote transmission, temperature signal acquisition and transmission of
industrial PLC or DCS system

Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=87

 

9. AC to DC (AC / DC) low cost isolation transmitter. New product promotion price: usd$10 / PCS
 Product introduction: The SY AC-P-O series is a mixed integrated circuit that converts AC signal acquisition into a linear DC signal. It can convert the 0-1Vrms (50~60HZ) power frequency signal collected by the sensor (AC transformer) into 4-20mA/0-10mA / 0-20mA DC current signal or 0-1V/0-2.5V. /0-5V/0-10V DC voltage signal. IC packaged products can be combined with external AC transformers to form single-phase or multi-phase fully isolated transmitters and achieve 3KV three isolation between signal input and output signals and auxiliary power supply.
The products can widely used in the fields of electromotor or motor safe operation monitoring, remote monitoring of power transmission and distribution, instrumentation and sensor signal transmission and reception, medical equipment safety isolation barrier, industrial automation control etc.

Product information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=35&id=29


 

Industrial field analog signal isolation amplifier, isolation transmitter safety application can reference the bellow technical information:
 

1、 IC package isolation amplifier isolation transmitter signal and power supply part external protection circuit diagram  
2、 The newest application version of isolation amplifier: field analog signal bandwidth and isolation transmitter frequency response matching technology
 
The Newest low cost & small size two wire passive 4-20mA signal isolation converter developed by SunYuan Technology Introduction:
1、4-20mA (0-20mA) Two-wire analog signal isolator:
      ISOS 4-20mA Series Mini Low Cost 4-20mA Current Loop Isolator IC              

 

  
              


      ISOS 4-20mA  is the smallest in the industry' (7 pin single in line SIP7 Pin) low cost two wire passive current loop 4-20mA isolation IC developed by Shunyuan. This new product is a pre 4-20mA current signal input, and a post analog signal isolation mixed integrated circuit with a 4-20mA output. The internal of IC including a current signal modulation and demodulation circuit, a signal coupling isolation conversion circuit, and so on. The product use the unique Shunyuan technology invention technology of magnetoelectric coupling isolation and high-efficiency loop stealing, which effectively solves the problem of dependence of current signal isolation on the power supply. and achieved high-precision, high-linearity isolated transmission of 4-20mA (0-20mA) signal between industrial field sensors and instrumentation, PLC and DCS. The 7-pin single in line and ultra small (19.5X12.5X9.8mm) standard PCB board design can be embedded in the instrument panel, sensor, PLC and other internal of operation control board, which simplifies the choice of the user system design and reduces the volume and wiring costs.


Detailed technical information:
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=52

2.Two wire passive loop 4-20mA signal isolation distributor:
     ISOS 4-20mA-F Series Mini Low Cost 4-20mA Current Loop Isolation




         
              
         
Distributor IC         

              
         ISOS 4-20mA-F is the smallest in the industry' (7 pin single in line SIP7 Pin) low cost two wire passive current loop 4-20mA isolation IC developed by Shunyuan. This new product can supply power to the pre stage two-wire passive sensor or PLC, DCS equipment through the post feed mode, at the same time it can receive 4-20mA current signal from the output of two-wire sensor and other instrumentation equipment. Got a same linear & scale 4-20 mA signal after isolated. ISOS 4-20mA-F use Sunyuan's unique electromagnetic isolation coupling, high-efficiency loop stealing invention technology, The internal including current signal modulation and demodulation circuit, signal coupling isolation conversion circuit, and a high efficiency DC-DC. Boost circuit, etc. DC-DC booster circuit is a two-wire passive sensor or PLC, DCS equipment power distribution 16V ~ 21.5VDC, which facilitates the signal measurement, remote transmission, isolation and other functions of some passive sensors and meet the customer site need without external assistance power supply to achieve long-distance signal transmission and undistorted transmission. The output of IC is designed for a two-wire power supply loop (on-site explosion-proof function) according to 24VDC and sampling resistor (or load resistor) are connected in series. It is also match the analog input port of the active load of the current industrial field analog input interface board (host computer), PLC, DCS. Or other meters .

Detailed technical information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=109
3、Two-wire passive 4-20mA current loop isolation conditioner:

     ISOS 4-20mA-E Series Mini Low Cost 4-20mA Current Loop Isolation Conditioner IC 
         
         I
ISOS 4-20mA-E is the industry's smallest (7 pin single in line SIP7 Pin) low cost two wire passive current loop 4-20mA isolation IC developed by Shunyuan. This new product can convert an input active 4-20mA current signal into an isolated passive control signal output, controlling a two-wire power supply (explosion-proof) 4-20mA current loop to achieve the sensor signal acquisition matched with the active load of the analog input interface, which effectively solves the problem of signal collision interference between the active 4-20 mA current collected in the field and the receiving port power supply of the two-wire current loop power supply loop. The 7-pin single in line ultra small (19.5X12.5X9.8mm) standard PCB board design can be embedded in the instrument panel, sensor, PLC and other operation control board, which simplifies the choice of user system design and reduces the size and wiring costs. ISOS 4-20mA-E use Shunyuan's unique electromagnetic isolation coupling and high-efficiency loop stealing invention technology, so that the IC does not need independent power supply. The two-wire loop power supply output mode can save the auxiliary power supply and the two power lines, which greatly simplifies the user's design and reduces the their wiring cost.The internal of IC including a current signal modulation and demodulation circuit, a signal coupling isolation conversion circuit etc. The small input equivalent resistance enables the IC to collect the current signal voltage from the sensor output loop to an ultra-wide range (5~32VDC), so that the user can come true the needs of long-distance, distortion-free transmission without external auxiliary power supply.    

Detailed technical information:
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=98
4、Passive two-wire voltage signal to 4-20mA isolation transmitter:
      ISOS V-4-20mA series mini low cost two-wire passive V/I conversion power distribution isolation transmitter IC     

 

          
       
 ISOS V-4-20mA is the smallest in the industry' (7 pin single in line SIP7 Pin) low cost two wire passive current loop 4-20mA isolation IC developed by Shunyuan. The IC can provide a set of 5V (3mA) function expansion power supply to supply power for the pre stage device through the post current loop feeding mode, and receive the voltage signal from the output of the pre-stage device. and got the output is 4-20mA. Standard two-wire current signal after the isolation conversion. The 7-pin single in line ultra small (19.5X12.5X9.8mm) standard PCB board design can be embedded in the instrument panel, sensor, PLC and other operation control board, which simplifies the choice of user system design and reduces the size and wiring costs. The internal of product includes a signal modulation and demodulation circuit, a signal coupling isolation conversion circuit, a high-performance DC-DC conversion circuit, and a V/I conversion circuit etc. The output loop has a wide supply voltage range (12-36VDC), high conversion accuracy, and good linearity. The product is very convenient to use. Customers just need to add a small number of peripheral devices at the input end of the product to realize voltage signal distribution, such as voltage sensor, displacement potentiometer, etc., which need to provide power distribution type sensor and bridge (weighing) detection circuit. The internal integrated process and new technology isolation measures enable the device to meet the requirements of 3KVDC insulation voltage and industrial grade wide temperature, humidity, and vibration. Small size and easy to install. It can be placed inside the sensor to directly convert the displacement and angle resistance signals into a standard 4-20 mA signal. The full scale and zero point can be adjusted and calibrated through an external potentiometer by the user. ISOS V-4-20mA use Shunyuan's unique electromagnetic isolation coupling and high-efficiency loop stealing invention technology to achieve accurate isolation and conversion of voltage signals to 4-20mA standard signals. The output of  IC is designed for two-wire power supply loop feed technology with 24VDC and sampling resistor (or load resistor).It is matches the analog input port of analog input interface board (host computer), PLC, DCS or other instrument contains active load which used in industrial fields. The products have IC package on the PCB, DIN35 standard rail installation and PIM panel embedded installation. The DIN rail type installation can realize multi-channel isolation transmission functions such as one-in-one-out, two-in and two-out, three-in and three-out signals. PIM panel embedded intelligent transmission table can realize 4-20mA signal isolation display, alarm control and long-distance distortion-free transmission. Widely used in metallurgical mining, petrochemical, power equipment, medical equipment, industrial automation, new energy facilities and military research, users can choose the right products according to the needs of the site.

 
Detailed technical information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=51
5、Two-wire passive 4-20mA to voltage signal isolation converter:
      ISO 4-20mA-O Series Two-Wire Passive I/V Conversion Isolation Transmitter IC 

     
         
 ISO 4-20mA-O is the smallest in the industry (12 pin single in line SIP12 Pin) low cost two wire passive current loop 4-20mA to voltage signal isolation converter IC developed by SunYuan. It can make the input active 4-20mA current signal into a voltage signal output. this IC use two-wire input loop power supply mode, and has unique patented technology for high-efficiency signal loop stealing. It does not require external working power supply, which greatly simplifies the user's design process and reduces the cost of field wiring. The internal of module including a current signal modulation and demodulation circuit, a signal coupling isolation conversion circuit, a power supply inverter circuit, a subtraction circuit, a buffer processing output circuit, and so on . The small input equivalent resistance allows the IC to acquire current signals from the sensor signal output loop and achieve a voltage drop of ≤10V when inputting a 20mA signal. and meet the needs of users without the need for external auxiliary power to achieve long-distance, distortion-free transmission of signals. ISO 4-20mA-O is often used for the isolation of 4-20mA current to voltage signals, eliminating the need for an external power supply to make wiring simpler, lower power consumption, lower self-heat (basically no temperature rise), and high reliability. The biggest feature of the item is that it does not require an external auxiliary power supply. It contains a subtraction circuit and an amplifier buffer output circuit. These circuits bring simple and reliable advantages and also have limitations in use. It is isolated and transmitted for the sensor and PLC output 4-20 mA signal. From another definition, it is the transmission of electric power, so there must be power loss inside. This loss is expressed in the product of the input current value and its own input voltage drop. In this case, the 4-20 mA signal source must have the ability to drive a 500 Ω load in order for the two-wire passive 4-20 mA turn to voltage signal isolation converter to make ISO 4-20 mA-O works well. At present, from the practical application experience of industrial sites, most of the field instruments and sensors, PLC\DCS, etc. can meet the 4-20mA signal output and have the ability to drive 500Ω load. In applications of industrial field, some use only one I/V conversion sampling resistor to convert the input current signal into a voltage signal. Although this circuit is simple, it is not practical. Firstly, when the actual meaning is zero signal, there will be a zero current flowing through the sampling resistor. If the input current is converted to the maximum 5V voltage according to the 4~20mA input analysis, the zero point happens to be 1V. When this 1V is sufficient in the MCU resources, it can be subtracted by the microcontroller software. But in this case, the useful voltage will leave 5-1=4VDC instead of 5VDC. Because of  the maximum input voltage of the microcontroller A/D is the supply voltage of the microcontroller, this voltage is usually 5 VDC. Therefore, it is troublesome to deal with such a simple input conversion circuit, and in order to achieve the number of A/D conversion bits, the cost of the chip is increased. A simple way to solve the above problem is to configure a subtraction and buffer processing circuit composed of an operational amplifier before the input of the single-chip microcomputer. Increasing this level of circuit can make the processing of the zero point more convenient, without consuming the internal resources of the single-chip microcomputer, especially the single-chip microcomputer. When the A/D interface is used to accept such a zero signal and the input is not zero voltage value, the resources of the A/D conversion bit number can be all applied to the useful signal.

  
Detailed technical information:

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=48
6、Pt100/Cu50 two-wire passive type temperature signal loop isolation transmitter:
     ISO Z-W-O1 Series Two-Wire Passive Thermal Resistance Signal Isolation Transmitter IC

 


       
ISO Z-W-O1 is the smallest in the industry (12 pin single in line IC packaing) Low cost passive two-wire 4-20mA loop-powered RTD signal isolation transmitter. The product is mainly used for the acquisition, isolation and transmission of Pt10 / Pt100 / Pt1000 or Cu50/Cu100 three-wire, four-wire or two-wire temperature sensor signals. This new product converts the temperature signal collected by the RTD sensor into a linear proportional standard 4-20mA current signal output. The product use the unique electromagnetic isolation mode of Sunyuan Technology and the patented technology of high-efficiency post-feeding technology. It can realize the accurate isolation and conversion of the thermal resistance temperature signal to the 4~20mA standard signal without independent power supply, and it is directly match with various types analog input ports of nstrument (such as PLC, DCS system, etc.). The product is designed as a low cost, small form factor standard SIP12Pin flame retardant IC package. The internal of IC includes signal modulation and demodulation circuit, signal coupling isolation conversion circuit, high-performance DC-DC boost circuit, signal zero point, full-scale calibration circuit and thermal resistance linearization, long-line compensation, and interference suppression circuit. The output loop has a wide supply voltage range (12-36VDC), high conversion accuracy, and good linearity. The full scale and zero point are adjusted and calibrated by the user through an external potentiometer. The internal integrated process structure and new technology isolation measures enable the device to achieve 3000 VDC signal input and output isolation, and can meet the industrial requirements of wide temperature, humidity, vibration and the harsh working environment. ISO ZW-O1 has the characteristics of small size, easy installation and use, and can be directly placed inside the transmitter. Customers only need to add a small number of devices on the periphery to realize high-precision acquisition and isolation of temperature signals of Pt100 and other RTD sensors. This item uses a unique electromagnetic isolation mode and high-performance post-feed technology, so that the IC does not need independent power supply. The two-wire loop power supply output mode can save two power lines, greatly simplifying the user's design and reducing the user wiring cost. The product has an IC package mounted on a small-volume PCB board, a head-type (installation method in the junction box), a PIM panel embedded, and a DIN35 standard rail mounting method. DIN rail mounted packaging can acheive thermal resistance signal signal one-in-one, two-in, two-out, three-in and three-out multi-channel isolation transmission transmission function, PIM panel embedded intelligent transmission table can realize thermal resistance signal isolation display , alarm control and long-distance distortion-free transmission and other functions. It is widely used in metallurgical mining, petrochemical, power equipment, medical equipment, industrial automation, new energy facilities and military research, users can choose the right products according to the needs of the site.

Detailed technical information:
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=87 

 7、PWM two-wire passive pulse width modulation signal loop isolation 


        transmitter IC 

        ISO D-O1 is the smallest in industry, low power passive PWM pulse width modulation signal isolation to a two-wire 4-20mA transmitter IC. Through the back stage (output interface) current loop feed mode to receive the PWM signal from the output of the pre-stage device, and the corresponding is 4~20mA standard two-wire current signal output after isolation conversion. The product has the characteristics of high conversion precision, good linearity and wide output voltage range (12-36VDC). The integrated process structure and new technology isolation measures enable the device to achieve signal input and output 3000VDC isolation, and meet the industrial requirements of wide temperature, humidity, vibration and harsh working environment. ISO D-O1 use the advanced high-speed optocoupler isolation mode and high-efficiency post-feed technology to achieve accurate isolation and conversion of PWM signals to 4~20mA standard signals. It can be match with the standard analog input ports of various types of instrumentation equipment. Such as: PLC, DCS, FCS) The two-wire ultra-small (22.0X11.0X9.0mm) standard PCB board design without working power can simplify the user system design options and reduce installation volume and wiring costs. The product also has an extended function DIN35 standard rail mounting and PIM panel display embedded mounting. The DIN rail mounted packaging can come true the multi-channel transmission functions such as one-in-one-out, two-in and two-out, three-in and three-out signals. The PIM panel embedded intelligent transmission table can realize the intelligent function of sensor analog signal isolation display, alarm control and long-distance distortion-free transmission. It is widely used in metallurgical mining, petrochemical, power equipment, medical equipment, industrial automation, new energy facilities and military research, users can customize the right products according to site needs.

Detailed technical information:

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8、Two-wire passive AC signal intelligent transmitter: ISO NNAC-O1 series AC signal to 4-20mA isolation transmission

 

   
      
        (PIM)DIN1X1 ISO AC-O1 (LED1) is a passive two-wire AC to DC (AC/DC) signal display control isolation transmitter that can be used to a new type of detection device for analog current signals make the isolate AC current or voltage in a linear proportional transmission output standard. The product does not need independent power supply, and integrates display, alarm, isolation and transmission. The output of the product is designed for the two-wire power supply circuit (on-site explosion-proof function) with 24VDC and sampling resistor (or load resistance) connected in series. The commonly matched with used analog input interface board (host computer), PLC, DCS or other instrument's analog input and output interfaces to achieve AC voltage and current measurement and control. The internal integrated process and new technology isolation measures enable the device to meet the 3KDC isolation voltage and industrial grade wide temperature, humidity, vibration and harsh environment requirements. (PIM) DIN1X1 ISO AC-O1 (LED1) series products are very convenient to use, adopt standard DIN35 rail mounted packaging installation and panel embedded installation design, which is convenient for users to install and use. The product can realize AC signal to DC without external components. 20mA current loop isolation and signal display function. The item use the two-wire loop power supply output mode, which can save two power cables, simplify the system design scheme, reduce the wiring cost, and supply power through the signal loop of the display control instrument or DCS/FCS system directly, and remotely monitor the power.  electrical automation, instrumentation, rail transit, industrial control intelligence and other fields are widely used. 

Detailed technical information   :
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=57&id=21 
 
Commonly used two-wire passive isolation amplifier, isolation transmitter IC, Sunyuan product technical information download: 

1、4-20mA (0-20mA) Current Loop Isolator IC: ISO 4-20mA 
2、4-20mA two-wire passive I/V conversion isolation transmitter IC: ISO 4-20mA-O series 
3、4-20mA isolation controller (active signal PLC current loop active load) IC: ISO 4-20mA-E
4、Two-wire passive sensor 4-20mA loop isolation distributor IC: ISO 4-20mA-F 
5、
Two-wire voltage signal power distribution isolation transmitter IC: ISO V-4-20mA 
 
Commonly used active type (external auxiliary power supply required) isolation amplifier transmitter IC, product selection application data download: 

1、The newest application of isolation amplifier: field analog signal bandwidth and isolation transmitter frequency response matching technology  
2、 
IC package isolation amplifier isolation transmitter signal and power supply part external protection circuit diagram
3、ISO mV series: millivolt-level analog small signal dedicated isolation amplifier IC  
4、
 ISO EM U(A)-P-O-T Series: Zero-point, gain-adjustable analog isolation amplifier isolation transmitter
 
5、 
ISO EM A(U)-P-O-S Series: Input Distribution Isolation Transmitter IC 
6、 ISO EM U(A)-P-O-SD Series: Zero-point gain adjustable input distribution type isolated transmitter IC
 
7、
 ISO EM-U(A)-P-O-O Series: Analog Input Isolation Transmitter with 1 to 2 Output Low Cost Small Size IC mounted Package 
8、
 ISO EM A-P-O Series: 0-±10V Bilateral DC (Voltage/Current) Signal Isolation Amplifier Isolation Transmitter IC 
9、 DIN3 ISOEM U-P-O(A-P-O) Series: Single DIN35 rail mounting packaging low cost small volume isolation transmitter
 
10、
DIN 1X2 ISOEM U(A)-P-O Series: one input and two output DIN35 rail mounting packaging isolation transmitter
 
11、
DIN 2X1 C-P-O Series: 2 input and 1 output analog average isolation transmitter 
.
12、DIN 2X2 ISOEM U(A)-P-O Series: two in two out DIN35 rail mounting isolation transmitter
 
13、
DIN 1X3 ISOEM U(A)-P-O Series:one in three out DIN35 Rail mounting isolation transmitter 
 
14、DIN ISO AC Series: Passive two-wire AC to DC signal isolation transmitter
 
15、
ISO EMH 4-20mA Series: High isolation barrier for track voltage monitoring 
 
16、
ISO F-P-O  Series: Frequency Signal (FV/FI Conversion) Isolated Converter IC
 
17、
ISO U(A)-P-F Series: Analog Signal to Frequency Pulse Signal (V/F) Isolated Transmitter IC
 
18、
ISO EM RMS-P-O Series: Analog True RMS (RMS) Signal Isolation Transmitter Isolation Amplifier 


Product shape and installation method for you reference 

 


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