Passive Two-Wire Voltage to 4-20mA Signal Isolation Converter

• Task: Adjust
• Structure: Open-Loop
• Mathematical Model: Linear
• Signal: Continuous
• Function: Automatic Control, Protection, Monitoring, Measurement
• Certification: RoHS, ISO: 9001, CE
• Model NO.: ISO V-4~20mA
• Condition: New
• Customized: Customized
• Input Voltage Range: 18V-36VDC
• Input Voltage: 0~5V, 0~10V, 0~75mv, 0~2.5V or Customize
• Output Current: 4~20mA
• Accuracy: Grade 0.1, 0.2
• Auxiliary Power Supply: No
• Load Regulation Rate: Less Than 0.05%
• Isolation Voltage: 3kv(60Hz / S)
• Transport Package: Plastic Tube and Gift Box
• Specification: SIP 7Pin or DIN
• Trademark: Sunyuan or OEM
• Origin: Guangdong, China
• Production Capacity: 5000PCS/Month

Product Description

Passive two-wire Voltage to 4-20mA Signal Isolation Converter
ISO V-4~20mA Series

Introduction:
Sunyuan ISO V-4-20mA is kind of SIP 12Pin PCB-mounted passive 2-wire voltage to 4-20mA isolation transmitters. Theisolation transmitter IC can provide a set of 5V(3mA) power supply for function extension in next step current loop powered mode. And it receives the voltage signal from the input terminal and converts it into standard 4-20mA 2-wire current signal. 

The design of product follows the low cost, small size standards, and adopts SIP12PIN fire protection IC package. Inside the product, there are current signal modulation circuit, magneto-electric isolation transform circuit and signal reduction demodulation circuit. It's power supply voltage range is 12-36VDC, low input equivalent resistance, high linearity, the isolation withstand voltage between signal input and output is up to 3000VDC. The power modules are convenient to use, which achieve isolated distribution of voltage signals from the two-wire voltage input distribution sensor and bridge (weighing) detection circuit only by adding some peripheral devices. The isolation transmitter can be used with sensor to directly convert displacement, angle resistance signal into standard 4-20mA signal, zero and gain can be adjusted by adding external potentiometers. When using the module, user should refer to the typical application circuit diagram.

Unique magneto-electric isolation mode and high efficient loop powered technology are used to make the modules convert voltage signal into standard 2-wire 4-20mA signal. The signal transmitter is compatible with the standard analog input terminals, like PLC, DCS, Digital display meter. It can be used in normal in abominable industrial conditions like wide temperature, humidity and vibration. The signal transmitter have two types of package, small size PCB-mounted package, 35mm DIN rail mounted package. The 35mm DIN rail-mounted products can be 1-input 1-output, 2-input 2-output, 3 input 3-output and 16-channel V/I isolated conversion functions.

All products have passed CE & RoHS certification
The factory has obtained GB / T19001-2016 / ISO 9001:2015

Features:
1. Unique high efficient signal loop power extraction technique, external power supply is not required. 
2. 2-wire V/I conversion, 3KVDC isolation between signal input and output. 
3. DC voltage signal input, loop powered 4-20mA output. 
4. Input potentio-meter signal: 0-2KΩ / 0-5KΩ / 0-10KΩ,etc. Input standard voltage signal: 0-5V/0-10V/1-5V/0-75mV,etc. 
6. Input terminal can provide distribution power (5V/3mA) regulated power supply for functions extension.
7. High accuracy and linearity in full measuring range, non-linearity error grade < 0.1%. 
8. Micro size (33X10.5X15.5mm), error grade: 0.1, 0.2. 
9. SIP 12Pin PCB-mounted, UL94V-0 flame-retardant package. 
10.  Industrial operating temperature range: -40 ~ +85 ºC

Application:
1. Displacement signal, potentiometer signal data acquisition isolation and control. 
2. PLC/DCS directly gathers voltage signals from sensor. 
3. Converts weighing mV signal into standard 4-20mA analog signal. 
4. Interference rejection of industrial field ground. 
5.  Pressure signal acquisition and distribution 
6. Sensor voltage signal acquisition and long-term distortion-less transmission 
7. Bridge (weighing) detecting circuit voltage signal distribution and transmission 
8. Voltage signal to passive 2-wire 4-20mA current signal isolated conversion: 1-input 1-output, 2-input 2-output, 3-input 3-output




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Commonly used two-wire passive isolation amplifier, isolation transmitter IC, Sunyuan product technical information download: 






Commonly used active type (external auxiliary power supply required) isolation amplifier transmitter IC, product selection application data download: 







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