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Isolating barriers provide intrinsic safety and galvanic separation between the control system and various field devices. These isolators/barriers only allow a safe amount of energy to reside in the electrical circuit so that no sources of ignition are created.
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Intrinsically Safe Isolators and Barriers
Category Selection
When automated systems are installed in potentially explosive atmospheres (ex. oil and gas production), extra precautions must be taken to ensure the electrical circuits do not become ignition sources. Intrinsic safety protection requires consideration of the entire electrical circuit, consisting of a current/voltage source, end devices, and connecting cables. To maintain the integrity of an intrinsically safe system with field devices such as sensors, transmitters, or valves, intrinsically safe isolators or barriers are also required. Endress+Hauser and STAHL isolators/barriers only allow a safe amount of energy to reside in the electrical circuit so that no sources of ignition are created.
For part listings and specifications, go to Shop Now
STAHL Isolators and Barriers
STAHL safety isolator modules are available to accommodate digital and process signals wired to/from hazardous areas.
- Digital input and output, analog input and output, frequency, and temperature converter modules available
- Dual-channel modules available for most circuit types for more compact installation
- Digital and analog modules are rated for SIL applications
- Intrinsically safe zener barrier for thermocouple signals available
- Analog modules are HART compatible
- Optional pac-BUS saves wiring time and money, and allows the system to be expanded at any time
Endress+Hauser Analog Input Isolators
New!
Endress+Hauser RN22 and RN42 series intrinsically safe isolation barriers provide galvanic isolation and safe transmission of analog signals from process instruments in hazardous areas. These cost-effective isolation barriers are HART transparent, passing bidirectional communication signals between HART compatible devices.
- 0/4 to 20 mA input
- Internal power supply for loop-powered transmitters
- 0/4 to 20 mA output
- 24 VDC or 19.2 to 253 VAC/VDC operating voltage options
- 1-channel, 2-channel, or signal doubler options
- Integrated HART connection lugs/sockets
- Screw or push-in terminal options
Warning: Machine safety products sold by AutomationDirect are safety components only.
The purchaser/installer is solely responsible for the application of these components and ensuring all necessary steps have been taken to assure each application and use meets all performance and applicable safety requirements and/or local, national and/or international safety codes as required by the application. AutomationDirect cannot certify that our products used solely or in conjunction with other AutomationDirect or other vendors products will assure safety for any application.
Any person using or applying any products sold by AutomationDirect is responsible for learning the safety requirements for their individual application and applying them, and therefore assumes all risks, and accepts full and complete responsibility for the selection and suitability of the product for their respective application.
AutomationDirect does not provide design or consulting services, and cannot advise whether any specific application or use of our products would ensure compliance with the safety requirements for any application.
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