Passive Two-wire 4~20mA Current Loop 10KV High Isolation Distributor ISOH 4-20mA-F Series
Features:
1. Small size (46X22X12mm), no zero and gain adjustment required
2. Unique and high-efficiency signal loop coupling power-taking technology, no need external power supply
3. Two-wire 4~20mA(0~20mA) signal loop powered transmission method
4. Two-wire 4~20mA sensor loop powered active output method
5. The working power provided for the sensor: 16V ~ 21.5V DC
6. High precision and linearity over the full scale, non-linearity error < 0.2%
7. Error level: 0.1,0.2, Low loss of signal value
(Pressure drop 3.5V, type @20mA)
7. Industrial grade temperature range: -40 ~ +85 ºC
8. SIP 16 Pin standard PCB mounted, compliant with UL94V-0 flame retardant package.
Typical Application:
1. Two-wire passive sensor power distribution and signal transmission
2. Realization of 4-20mA current signal isolated power-distribution transmission method
3. Industrial site 4-20mA signal isolation and long-distance transmission
4. PLC, DCS site analog signal isolation and acquisition.
5. Multi-channels analog signal acquisition: ground wire current loop isolation and interference
6. Reliable transmission, reception and monitoring between Instrumentation and sensors
7. Analog signal data acquisition, isolation and long-distance distortion-free transmission
8. Instrumentation, medical equipment monitoring and isolation safety barrier
9. High voltage monitoring and isolation safety barrier for electric power and rail transit
SunYuan ISOH 4-20mA-F is a two-wire passive 4~20mA current loop isolation distributor module with 10KV high voltage isolation, small size and low cost. Which is the highest voltage isolation amplifier IC on the market and developed by Sunyuan Technology. This new product could get power from the active equipment and supply for the passive sensor, at the same times, receive 4~20mA current signal from two-wire sensor or other instrumentation and output a isolated 4~20mA signal of the same linearity and same scale. The new product can realize high precision, high linearity and 10KV anti-EMC interference high isolation transmission and power distribution between industrial field sensor and instrument, PLC, DCS.
Inside the ISOH 4~20mA-F module, there are current signal modulation and demodulation circuit, signal coupling isolation and conversion circuit, and high efficiency DC-DC boost circuit, etc. circuit. DC-DC boost circuit supply power of 16~21.5V for two-wire passive sensor or PLC, DCS equipment, be convenient to the signal measuring, long-distance transmission and isolation for passive sensor, meets the needs of users to transmit distortion-free signal in long distance without power supply. This IC was designed for the two-wire powered loop (explosion-proof) of series connection between 24VDC and sampling resistors (load resistance), it is matched with the analog input interface board (host machine), PLC, DCS or other instruments (With active load in analog input port) commonly used in industrial fields. The integrated process and isolation technology which inside the product makes the input and output signal reach 10 KV AC voltage high isolation and insulation, and meet the harsh environment requirements in industrial site which with industrial grade wide temperature, damp, vibration, etc.
The ISO 4-20mA-F product is very convenient to use, it can realize the isolation, transmission and conversion of the two-wire 4-20mA signal without external adjustment circuit. The product's unique electromagnetic isolation mode and high-efficiency power distribution technology effectively solve the problem of dependence of the current signal isolation and transmission for sensors and transmitter to power supply, and achieve the precision and isolation transmission of 4~20mA standard signal. SIP 16 Pin PCB mounted and DIN 35 Rail mounted packages are available, which were widely used in rail traffic voltage monitoring, power generator or electric motor safety operation monitoring, electric power transmission and distribution long distance monitoring, signal transmission and reception between instrument and meter, medical equipment isolation safety barrier, industrial intelligent control, nuclear power, etc. field.
Rated Maximum Values:
(Operating the products in the rated maximum value environment for long-term will affects the service life of the product. If the maximum value is exceeded, irreparable damage may be occurred.)
Continuous Isolation Voltage 10000Vrms |
Input voltage 36VDC |
Operating Temperature - 40 ~ +85 ºC |
Storage Temperature +150ºC |
Pin Welding Temperature +300ºC/<10S |
Output short-circuit time Sustainable |
General Parameters:
Accuracy, linearity error grade ---------- 0.1, 0.2 |
Load regulation rate --------- <0.05% meas.val./100Ω |
Auxiliary power ---------- No |
Isolation ---------- 10kV isolation between Signal input/output |
Operating Temperature ---------- -40 ~ +85 ºC |
Package ---------- SIP16 Pin (16Pin PCB Mounted) |
Operating Humidity ---------- 10 ~ 60% (No condensation) |
Withstand voltage --------- 10KV(50HZ / S), leak current <1mA |
Storage Temperature ---------- -45 ~ +105ºC |
Impact Resistance Voltage -------- 10KVAC, 1.2/50us (peak) |
Storage Humidity ---------- 10 ~ 95% (No condensation) |
Temperature drift ---------- 0.0050%F.S./ºC (in -40ºC~ +85ºC operating temperature) |
Technical Parameters:
Parameters |
Condition |
Min. |
Typical Value |
Max. |
Unit |
Isolation voltage AC, 50Hz Insulation resistance Leak current |
60S 500VDC 240Vrms,50Hz |
|
10000 100 0.5 |
|
VAC MΩ uA |
Temperature drift Non-linearity |
|
|
±50 ±0.2 |
±100 ±0.5 |
PPm/ºC %FSK |
Load capacity |
24VDC |
|
750 |
|
Ω |
Input signal voltage range |
|
5 |
24 |
32 |
VDC |
Output signal voltage range |
RL:250Ω |
13 |
24 |
36 |
VDC |
Output linear range Output current |
|
0.5 |
4
|
24 40 |
mA mA |
Output signal ripple |
|
|
10 |
20 |
mV |
Frequency response (Small signal bandwidth) |
Io=20mA |
|
100 |
|
Hz |
Pin Definition and Block Diagram:
Dimension and Typical application: