Two-wire VI and IV signal conversion 10KV high isolation transmitter obtained national patent at the same time

Release time:2021-09-26 08:18:52  Number of views:463

 The newest products developed by Sunyuan Technology with international leading technology in the industry: two-wire passive analog signal VI conversion (ISOH V-4-20mA) and IV conversion (ISOH 4-20mA-O) 10,000V high isolation transformer obtained national patents at the same time.
 


  SunYuan  ISOH V-4-20mA is the newly developed 10KVAC highest isolation        voltage, small size (16 pin single line SIP16 Pin) low-cost passive two-wire sensor voltage signal to 4-20mA isolated transmitter module in the industry . The module can provide a set of 5V (3mA) function expansion power supply to the input circuit and supply power to the pre-stage circuit through the post current current loop feeding mode, and receive the voltage signal from the output of the pre-stage circuit, and output 4~20mA after isolation conversion. Standard two-wire current signal. The new product can realize high precision, high linearity 10KV anti EMC high isolation transmission and VI conversion between industrial field passive two-wire voltage sensor and instrumentation/PLC/DCS.
 
  ISOH V-4-20mA product is designed as a low cost, small size, standard SIP16 Pin flame-retardant IC package that includes a signal modulation and demodulation circuit, a signal coupled isolation converter circuit and a VI conversion circuit. The product has the characteristics of wide output voltage range (12-36VDC), high conversion precision and good linearity. It is very convenient to use. Customers only need to add a small number of peripheral devices at the input end of the product to realize the distribution of voltage signals in the sensor and bridge (weighing) detection circuit of the electronic scale, displacement, potentiometer, etc. The product is small size and easy to install. It can be placed inside the sensor to directly convert the displacement and angular displacement resistance signals into a standard 4-20mA signal output. The full scale and zero point can be adjusted and calibrated by the user through an external potentiometer. The advanced integrated process structure and new technology isolation measures enable the device to achieve high signal isolation of 10,000 VAC.
  ISOH V-4-20mA series new products enable analog voltage signals from industrial field sensors and signals between instrumentation, PLC and DCS, high-precision, high linearity 10KV anti EMC high-isolation transmission and VI conversion. Products include IC package and DIN35 Rail-mounted packaging. It is widely used in track voltage monitoring, generator or motor safe operation monitoring, power transmission and distribution remote monitoring, instrumentation and sensor signal transceiver, medical equipment safety barrier, industrial automation control. nuclear power equipment and other fields etc.
 





  SunYuan  ISOH 4-20mA-O is the highest isolation voltage 10KVAC in the industry fied, small size (16pin single-line SIP16 Pin) low cost, two-wire passive 4-20mA to voltage signal isolation converter module. The voltage signal value can be converted by sampling acquisition isolation in a two-wire passive 4-20mA current loop without a separate power supply. The IC adopts two-wire input loop power supply mode, unique high-efficiency signal loop power-taking technology and no external working power supply, which can greatly simplify the user's system design and reduce the user wiring cost. The internet of IC 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, etc., and a small input equivalent resistance enables the IC to be used from instruments, PLCs, and sensors. The current signal is collected in the signal loop (the voltage drop is ≤10V when the input 20mA signal is reached), and the collected current signal is isolated and converted into a voltage signal. It is convenient to realize the AD acquisition and conversion of the industrial field MCU microcontroller, DCS, FCS and other control systems. It meets the needs of the user's site without the need for an external auxiliary power supply or IV conversion transmitter to achieve long-distance, distortion-free transmission of signals.
 
  ISOH 4-20mA-O is often used for the isolation conversion of two-wire passive 4-20mA current to voltage signals. It has low power consumption and low heat generation (basically no temperature rise)high reliability. The internet mainly including the subtraction circuit and the amplifier buffer output circuit. These circuits bring the advantages of simplicity and reliability and also bring the limitations of use. Both the product and the 4-20 mA signal output from the sensor are isolated and transmitted from the other. 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 source must have the ability to drive a 500 Ω load for the product to function properly. At present, from the practical application experience of industrial sites, most of the field instruments and sensors, PLC / DCS, etc. can meet the ability of 4-20mA signal output to drive 500Ω load.
 
In industrial field applications, some circuits can convert the input current signal into a voltage signal using only one I/V conversion sampling resistor. This circuit is simple but not practical. First of all, 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 current, the zero point happens to be 1V. This 1V is sufficient in the MCU resources. At that time, it can be subtracted by the microcontroller software, but the useful voltage will leave 5-1=4VDC instead of 5VDC. Since the maximum input voltage of the A/D of the MCU is the supply voltage of the MCU, this voltage is usually 5 VDC, so it is very trouble to deal with this simple input conversion circuit. In order to achieve the number of A/D conversions, the cost of the chip will increase. . 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 fully applied to the useful signal.
 
  ISOH 4-20mA-O series enables high-precision, high-linearity 10KV anti-EMC high-isolation transmission and I/V conversion between industrial field sensors and instrumentation, PLC and DCS. Products include IC PCB package and DIN35 Rail-mounted packaging, It is widely used in track voltage monitoring, generator or motor safe operation monitoring, power transmission and distribution remote monitoring, instrumentation and sensor signal transceiver, medical equipment safety barrier, industrial automation control, nuclear power equipment etc other fields.
 

SunYuan Technology the newest products: 10KVAC high isolation analog signal isolation transmitter related product information:

1. 10KVAC high isolation DC (voltage / current) signal two isolated amplifier: ISOH A-P-O / U-P-O

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=174

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=63&id=168

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=63&id=172

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=63&id=171

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=63&id=169

6.Two-wire passive loop feed 4-20mA signal 10KV high isolation power distributor: ISOH 4-20mA-F series
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=170
 
 

 Sunyuan Technology Isolation Amplifier Product Information For You Reference:
1.Introduction of passive multichannel 4-20mA analog signal isolator

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=78

2. Analog signal bandwidth and isolation amplifier frequency response matching technology and application
The newest application of isolation amplifier: field analog signal bandwidth and isolation transmitter frequency response matching technology  

3.1-input&2-output  analog signal isolation amplifier in IC package: ISO EM-U (A) -P-O-O
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=86

4, 6KV isolated DC (voltage / current) unidirectional signal isolation amplifier: ISO EMH
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=155

5, 4-20mA current loop isolation IC: ISO 4-20mA
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=40

6.2-input&1-output analog mean isolation transmitter: DIN 2X1 ISO C-P-O
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=77

7.Passive two-wire AC signal isolation transmitter: DIN ISO AC
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=76

8.Two-wire passive V / I conversion power distribution isolated transmitter IC: ISO V-4-20mA
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=34

9.Fiber interface analog conversion full isolated optical transceiver: OFS P-O-Q
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=145

10, millivolt analog micro signal linear isolation amplifier transmitter IC: ISO EM-SD
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=60

11.Zero, full-scale adjustable analog signal isolator amplifier IC: ISO EM U (A) -P-O-T
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=63&id=68
 
12、
Zero-point, gain-adjustable analog isolation amplifier isolation transmitter IC: ISO EM U(A)-P-O-T
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=30&id=53
 
13、Non-isolated two-wire passive I/V converter IC :SY 4-20mA-O
 http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=42

14、Two-wire passive 4-20mA to voltage signal isolation transmitter: ISO 4-20mA-O
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=48 

15、Mini low cost two wire passive thermal resistance signal isolation transmitter IC: ISO Z-W-O1
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=87  

16、Mini low cost two-wire passive V/I conversion power distribution isolation transmitter IC:ISOS V-4-20mA
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=157 
 
17.Switching to analog multi-channel isolation transmitter:ISO K-P-O

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=72&id=148
 
18、Analog quantity to frequency pulse signal (VF conversion) isolation transmitter: ISO U(A)-P-F

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=32&id=36
 
19、High isolation safety barrier for rail voltage monitoring: ISO EMH 4-20mA series

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=26&id=108
 
20、4-20mA loop signal low price 1-input&2-output isolated transmitter:DIN1X2 ISOD A4-P1-O1-O1

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=180
 
21、Millivolt analog tiny signal isolation amplifier isolation transmitter: ISO EM U-P-O-SD

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=29&id=168
 
22、Frequency signal (FV/FI conversion) isolation transmitter IC: ISO F-P-O

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=32&id=114
 
23、Analog isolation amplifier with one input and two output power distribution: DIN 1X1(2) ISO EM U(A)-P-O-S

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=26&id=102
 
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26、Two-wire low cost 4-20mA loop feed acquisition conditioner :SY 4-20mA-P

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http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=26&id=103
 
37、(AC/DC) AC signal to analog signal isolation transmitter IC: ISO AC-P-O

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=35&id=29
 
38、Active load two-wire 4-20mA isolation controller IC: ISO 4-20mA-E

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=98
 

39、Two-wire 4-20mA Loop Powered Isolation Distributor:ISO 4-20mA-F
http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=109
 
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http://www.szsunyuan.com/uploadfile/2018/0315/20180315010127178.pdf
 
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http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=27&id=34
 
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http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=93
 
43、VF Transform analog to pulse frequency signal isolated transmitter IC:ISO U(A)-P-F

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=32&id=155
 
44、Pt100/Cu50 thermal resistance signal to frequency signal IC: ISO Z-W-P-F series.

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=31&id=172
 
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50、Passive isolation amplifier and isolation transmitter commonly used circuits

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51、DIN3 series Two-wire passive 4-20mA current loop signal isolator

http://www.szsunyuan.com/uploadfile/2018/0315/20180315025835415.pdf
 
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http://www.szsunyuan.com/uploadfile/2018/0315/20180315113542917.pdf
 
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53、http://www.szsunyuan.net/uploadfile/2018/0130/20180130031854984.pdf
 
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http://www.szsunyuan.com/uploadfile/2018/1015/20181015103900845.pdf
 
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http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=32&id=156
 
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http://www.szsunyuan.com/uploadfile/2018/0315/20180315103619886.pdf
 
60、Mini Low Cost 4-20mA Current Loop Isolation Conditioner IC:ISOS 4-20mA-E

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=158
 
61、Mini Low Cost 4-20mA Current Loop Isolator IC:ISOS 4-20mA

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=25&id=160
 
62、AC signal to DC (AC/DC) intelligent transmission digital meter:DIN 1X1 ISO AC-P-O (LED1)

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63、Programmable analog AD conversion isolation transmitter IC: ISO U(A)-P-D-Q

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=33&id=151
 
64、PWM Pulse to 4-20mA Isolation Transmitter IC:ISO D-P-O-Q

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=33&id=38
 
65、PWM two-wire passive pulse width modulation signal loop isolation 

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=117
 
66、IC package isolation amplifier isolation transmitter signal and power supply part external protection circuit diagram

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=26&id=58
 
67、The newest application of isolation amplifier: field analog signal bandwidth and isolation transmitter frequency response matching technology

http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=17&id=22
 
68、Analog signal optical fiber interface fully isolated optical transceiver: OFS U(A)-P-Q

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http://www.szsunyuan.com/index.php?m=content&c=index&a=show&catid=23&id=180
 
70、Weighing and displacement resistance sensor analog quantity (V/I) to 4-20mA two-wire isolation transmitter

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74、Displacement Potentiometer Signal Transmitter IC:SY R-P-O

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75、Two-wire infinite loop feeding 4-20mA signal isolation power distribution IC: ISOS 4-20mA-F

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77、4-20mA loop signal low price 1-input&2-output isolated transmitter:DIN1X2 ISOD A4-P1-O1-O1
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