2020 sales promotion 
                                                    for DIN3 Series Rail-Mounted Signal Transmitters 
                                                    Promotion’s time :28^th of July ----6^th of November 
 
 
1. Low cost& high precision transducer, analog signal two isolated amplifier.
    Sales Price：usd$10.6 / PCS 

  Introduction: DIN3 SY U-P-O/ SY A-P-O Series Small size, low cost, high precision , DC voltage signal of SY U-P-O Series and DC current signal of SY A-P-O series with standarded DIN35 rail-mounted packaging(Isolation between the working power supply and signal channels ground) two isolation amplifier, adapt the solution of low cost /small size and din rail-mounted packaging .it is mainly used to solve the problem of 0.4-2V.0-5V/1-5V/0-10V/0-20mA/4-20mA etc non-standard analog quantities and standard analog signal conversion between the sensor and Instrumentations , PLC, DCS .
  The product has the characteristics of high precision and high linearity. There is 3000VDC isolation voltage between the working power supply and the signal channel which can suppress the surge and common mode harmonic interference in the power supply system.This two isolated transmitter is easy to use, free of zero point and gain adjustment, and does not require external adjustment potentiometers and other components. It is suitable for conversion and amplification between analog voltage and current signals and the input and output do not need to be isolated.Compared with other ISO series isolation amplifier items of Sunyuan, it has small size, low cost, high frequency response and better accuracy and linearity.

 
The detail technical datasheet :
 https://www.szsunyuan.com/uploadfile/2018/0315/20180315110844993.pdf
 
2. Universal sensor without zero point and gain adjustment,analog single and double way signal isolation amplifier    Sales price: usd$16.8/ pcs
 

  Introduction: DIN3 ISO EM U-P-O (A-P-O) series small size, low cost, high precision, standard DIN35 rail-mounted analog voltage or current signal isolation amplifiers,It is a kind of analog voltage signal (from instrument and sensor output) for examples:0-75mV, 0-2.5V, 0-5V, 0-10V, 0-±5V, 0-±10V or current signal for examples: 0-1mA, 0-10mA, 0-20mA, 4-20mA, 0-±1mA, 0-± 10mA, 0-±20mA, etc. They are converted into industrial grade conventional products with accuracy and linearity after isolation. It is mainly used for analog signal input and output control, isolation and amplification conversion in industrial control systems. The wide creepage distance on the input and output sides and internal isolation measures enable the product to reach 3000VDC three isolation insulation voltage. DIN3 ISO EM A-P-O (U-P-O) series products are very convenient to use, free of zero point and gain adjustment, and no external adjustment potentiometer and other components are required to realize the isolation and conversion function of industrial field signals.

 
The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/0315/20180315113727197.pdf
  
3、Two-wire passive 4-20mA current loop signal isolator ;   sales price：usd$16.8 / PCS

  Introduction: DIN3 ISO 4-20mA small size, low cost ,high precision standard DIN35 packaging isolation amplifier is a kind of current loop isolator which can isolated and output proportional 4-20mA/0-20mA/0-10mA signal from sensors and PLC in industrial site. There are signal interference suppression circuit, signal modulation circuit , signal isolation circuit and output demodulation filtering circuit in the IC. By employing internal isolation techniquie, proper I/O side creepage distance , the isolated voltage of that signal transmitter is up to 3000VDC.

 It's easy to use and without zero and gain adustment. It is widely used in the industrial controlling systerm. like analog signal input and output system , controlling the adjustable output signal from the other devices like PLC , DSP after DA conversion , current loop isolation on sensor or PLC signal :4-20mA/ 0-20mA /0-10mA etc.
 

The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/0315/20180315025835415.pdf
  
4、Two-wire passive loop powered 4-20mA signal isolation distributor;    sales price：usd$16.8 / PCS

Inroduction: DIN3 ISO 4-20mA-F small size, low cost ,high precision standard DIN Rail 35 two-wire passive sensor signal isolated distributor IC is a kind of signal modules with electro-magnetic hybird integrated circuits insid. There are signal interference suppression circuit, signal modulation circuit. signal isolation circuit and output demodulation filtering circuit in the IC. By employing internal isolation technique , proper I/O side creepage distance, the isolated voltage of that signal transmitter is up to 3000VDC.

DIN3 ISO 4-20mA-F Loop powerwed distributor can tansmit 4-20mA signal from PLC, DCS, PCC and other controlling system to sensors or intelligent meters to facilitate the isolation measuring and long-distance transmission of two-wire passive sensors. The isolated distributor is designed on the basis of two-wire loop powered (explosion-proof) circuit which has serial connection on 24VDC and sample resistance (load resistance) it can operate well with analog input interface board(host machine), PLC, DCS and other meters and instruments with analog input interface. The two-wire 4-20mA loop powered distributor is easy to achieve two-wire sensor signa isolation  . thransmission and power distribution without external components and auxiliary power supply 

The detail technical datasheet：
 https://www.szsunyuan.com/uploadfile/2018/0315/20180315113542917.pdf
 
5.Two-wire passive 4-20mA current loop signal isolation conditioner;   sales price：usd$16.8 / PCS
 

  Introduction: DIN3 ISO 4-20mA-E ,it is small size,low cost standard DIN rail35 packaging two-wire 4-20mA signal isolated controller can converter active 4-20mA current signal into isolated passive controlling signal to control the two-wire powered(explosion-prevention method)4-20mA current loop.The module achieves the matching between sensor signals acquisition and active load from analog input end, which effectively solves problems on the conflict between the active 4-20mA current signal and power supply of two-wire current loop input end.

  DIN3 ISO 4-20mA-E series controller adopt high-efficiency stealing electricity technology which makes the IC can operate without independent power supply. And the two-wire loop powered output method used which largely reduces the costs for customers in installation . Inside the IC,there are current signal modulation circuit magnetoelectric isolation transform circuit and signal reduction demodulation circuit etc.The low input equivalent resistance makes the voltage value of the current signal from the sensor output loop arrive at 5-32VDC to realized the long-distance , non-distortion transmission of signals without external power supply.

 
The detail technical datasheet：
 http://www.szsunyuan.net/uploadfile/2018/0130/20180130031854984.pdf
 
6.Two-wire passive pulse width modulation (PWM) signal to 4-20mA analog signal isolation transmitter  sales price：usd$16.8 / PCS

  Introduction:ISO D-O1 is a small size and low power consumption passive integrated transmitter IC designed for the isolated conversion from PWM pulse width signal into 2-wire 4-20mA signal. That IC operates in current loop powered in output terminal mode, it receives PMM signal from input, and converts it into corresponding isolated 4-20mA standard 2-wire current signal in linearity.

  ISO D-O1 series PWM Pulse width transmitter is a kind of integrated mixed circuits which can convert the duty ratio of PWM signal into isolated standard current signal. The transmitter IC is in low cost, small size standard SIP 8Pin flame-retardant package. It has combined with the following circuits: signal coupling isolated conversion circuit, precision reference voltage source switching control circuit, low-pass filtering circuit, driving amplification circuit, VI conversion circuit, etc. The output loop powered power supply range is 12-36VDC, PWM signal is converted in high accuracy and linearity. The hybrid integrated circuit and isolated technique used enable that transmitter IC to operate in 3KV isolation between input and output and operate normally in the severe operating environment, like high/low temperature, humidity, shake, etc in industrial site.

 
The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/1015/20181015103900845.pdf
 
7、High precision frequency signal to analog signal (FV/FI conversion) two isolation transmitters；sales price：usd$15/ PCS

  Introduction:DIN3 SY F-P-O series frequency signal isolation converter is a kind of hybrid integrated frequency circuits to convert frequency signal in proportion to the standard dc current or voltage signals. The product integrates a group of multi-channel high-isolation DC / DC power supply and a high-speed frequency signal isolation converter, applicable to any frequency signal isolation transform. SMD process structures and new isolation technologies allow the device to achieve: 3000VDC isolation between the auxiliary power supply, signal input, signal output. And to meet the industrial wide temperature, humidity, vibration scene adverse work environment requirements.
  DIN3 SY F-P-O series frequency signal isolation converter is very easy to use, with minimal external components to the frequency signal isolation transmitter.

 
The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/0315/20180315103619886.pdf
 
8.Speed sensor sine wave, sawtooth wave pulse signal isolation transmitter；   sales price：usd$13.8 / PCS

  Introduction: DIN3 SY S-P-O Series transmitter is a kind of isolation will speed sensor signal , sine wave , sawtooth wave signal or a weak signal isolation converted into fully consistent with the input frequency square wave signal hybrid integrated circuit .The product on the same chip integrates a group of multi-channel high-isolation DC/DC power supply,a high-performance signal isolation and signal amplification and shaping circuits. Especially suitable for the speed, sine wave signal isolation etc..to converter to the standard square wave pulse signal , the current velocity measurements in the automotive and automotive ABS anti-lock braking system widely used.
  DIN3 SY S-P-O chip interation of high efficiency DC-DC isolated power supply can produce multiple, respectively ,to internal input amplifier circuit, modulation circuit power supply , and output of the demodulation circuit, the conversion circuit shapping circuitry .SMD process structures and new technology quanrantine measures to enable the device to achieve :power , signal input/ output isolation 3000VDC and it can meet the industiral wide temperature,humidity,vibration,
Poor working site environmental requirements.
   DIN3 SY S-P-O Series of isolated transmitter is very easy to use, no additional external components, you can achieve the transmssion speed sensor signal isolation.

 
The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/0315/20180315110013671.pdf

9.Weighing and displacement resistance sensor analog quantity (V/I) to 4-20mA two-wire isolation transmitter;  sales price：usd$18.9 / PCS

  Introduction:DIN3 ISO V-4-20mA is an small size,low price and high precision, standard DIN35 rail-mounted V/I conversion isolation amplifiers, It is a signal isolation transmitter with voltage input and two-wire current output loop power supply.Through the current loop feeding mode of the rear stage, a set of 5V (3mA) function expansion power supply is provided to the input end to power the front-end equipment and receive the voltage signal output from the front-end equipment. After the module is isolated, it outputs a standard two-wire current signal of 4-20mA. This product uses a unique electromagnetic isolation mode and high efficiency post-feed technology,realize accurate isolation conversion from voltage signal to 4-20mA standard signal,The product matches the analog input ports of various instruments (such as PLC, DCS system, etc.) It is very convenient to use, customers can realize voltage signal input, displacement potentiometer, and other voltage signal isolation transmission that require power distribution type sensors and bridge (weighing) detection circuits without any additional components.there is 3000VDC isolation between the signal input and output .Both full scale and zero point can be adjusted and calibrated by the user through the adjustment potentiometer, which can meet the requirements of industrial-grade harsh working environment with wide temperature, humidity and vibration.

The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/1012/20181012025946721.pdf
 
10.Two-wire passive analog quantity (I/V) to 4-20mA two-wire isolation transmitter;   sales price：usd$18.9 / PCS

  Introduction:DIN3 ISO 4-20mA-O is a small size,low price and high precision, standard DIN35 rail-mounted two-wire passive 4-20mA to voltage signal isolation converter,it can transfer the current signal of input active 4-20mA to voltage signal output. The product uses a two-wire input loop power supply mode, unique high efficiency signal loop power stealing technology, no external working power supply, this greatly simplifies the user’s design and reduces user wiring costs. The module contains current signal modulation and demodulation circuit, signal coupling isolation conversion circuit, power inverter circuit, subtraction circuit, buffer processing output circuit etc. The small input equivalent resistance enables the product to collect current signals from the sensor signal output loop, and can achieve a voltage drop of ≤10V when a 20mA signal is input.so that meet the needs of users to realize long distance signal transmission and conversion without external auxiliary power supply.

 
The detail technical datasheet： 
https://www.szsunyuan.com/uploadfile/2018/0315/20180315033422686.pdf
 
11.Two-wire displacement resistance signal isolation transmitter；   sales price：usd$22.5 / PCS

  Introduction:DIN3 ISO EM R-P-O is a small size,low price and high precision, standard DIN35 rail-mounted resistance signal isolation transmitter.It is a standard analog voltage or current signal isolation transmitter that isolates the resistance (potentiometer) signal according to the adjusted change value into a standard analog voltage or current signal isolation transmitter that is linear with the resistance.The transmitter integrates a set of multiple high-isolation DC/DC power supplies and a set of magnetic-electrically coupled analog signal isolation amplifiers, and a built-in precision constant current source excitation.It is especially suitable for isolating and converting two-wire potentiometer (resistance) signals into standard analog signals.The new technology isolation measures enable the device to achieve: 3000VDC three isolation between working power supply, signal input and output, and can meet the requirements of industrial-grade harsh working environment with wide temperature, humidity and vibration.

The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/0315/20180315125923705.pdf
 
12.PWM pulse width modulation signal to analog voltage (current) signal isolation transmitter；   sales price：usd$24 / PCS

  Introduction:DIN3 ISO D-P-O-Q is a small size&low price and high precision, standard DIN35 rail-mounted PWM pulse width modulation signal isolation transmitter.It can convert the duty cycle of the PWM square wave signal output by the MCU, PLC/DCS, and instrumentation into a standard 4-20mA/0-10V analog signal through isolation to realize the isolation amplification and display control function of the PWM signal of the MCU.The transmitter integrates multiple high-isolation DC/DC power supplies, analog amplification and conversion circuits, PWM signal isolation control circuits, etc. in the same module.It is especially suitable for DA reduction and isolation transmission of industrial field PWM signals, single-chip microcomputer, field bus, Ethernet Internet of Things, PLC/DCS host computer to multi-channel sensor signal acquisition and analysis.The internal integrated high-efficiency DC-DC isolation power supply separately supplies power to the internal output conditioning circuit, DA conversion circuit and output signal isolation circuit. SMD process structure and new technology isolation measures enable the device to achieve: 3000VDC three isolation between auxiliary power supply and PWM signal input and analog signal output.And it can meet the requirements of industrial grade harsh working environment with wide temperature, humidity and vibration.

 
The detail technical datasheet：
https://www.szsunyuan.com/uploadfile/2018/0315/20180315010127178.pdf
 



Sunyuan Technology's new product: 10KVAC high isolation analog signal isolation related product information:

1. 10KVAC high isolation DC (voltage/current) signal two isolation amplifiers: ISOH A-P-O/U-P-O
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=75&id=181


2. 10KV two-wire passive 4-20mA current loop high isolation IC: ISOH 4-20mA series
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=174
 
 
3.Two-wire passive analog signal VI conversion 10KV high isolation transmitter: ISOH V-4-20mA series
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=179


4.Two-wire passive 4-20mA to voltage signal 10KV high isolation transmitter: ISOH 4-20mA-O series
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=178


5.Two-wire passive 4-20mA current loop 10KV high isolation conditioner: ISOH 4-20mA-E series
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=176


6.Two-wire passive loop feeding 4-20mA signal 10KV high isolation distributor: ISOH 4-20mA-F series
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=177
 
 
 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 
         

         IISOS 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：
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=117
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 
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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