Process isolators
4-20 mA Process and Signal Isolators
The process isolators They are electronic devices used in industrial automation systems to provide galvanic isolation between analog signals. Its main function is to protect control equipment, PLCs and data acquisition systems against electrical interference, ground loops and potential differences.
In industrial applications it is common to use signal isolators 4-20 mA or 0-10 V, especially when signals from sensors need to be reliably transmitted to control or monitoring systems.
The use of galvanic insulators It allows for improved measurement stability, reduced electrical noise, and protection of equipment against overvoltages or ground faults.
Common applications
Signal isolators are used in numerous industrial sectors:
industrial automation
process instrumentation
machinery control
chemical plants
water treatment
energy industry
SCADA systems
Types of signal isolators
In this category you will find different types of process isolators:
4-20 mA signal isolators
0-10 V insulators
signal doublers
signal quadruplers
universal insulators for instrumentation
These devices allow you to split, convert, or isolate analog signals from sensors such as:
pressure sensors
temperature sensors
industrial transducers
PLC process signals
Advantages of galvanic isolation
The use of signal isolators offers several technical advantages:
elimination of mass loops
reduction of electrical noise
protection of control equipment
improved signal stability
greater reliability in industrial systems
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What is a 4-20 mA signal isolator?
A 4-20 mA signal isolator is an electronic device that allows the transmission of an analog signal while maintaining galvanic isolation between input and output to avoid electrical interference.
What is a galvanic insulator used for?
Galvanic isolators are used to protect electronic equipment against potential differences, ground loops, and electrical noise in industrial automation systems.
When is a signal isolator needed?
Signal isolators are recommended when:
mass loops exist
The signals travel long distances
There is electrical interference
Equipment with different ground references is connected