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> Safety > Intrinsically Safe Isolators and Barriers
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Intrinsically Safe Isolators and Barriers
Intrinsically Safe Isolators and Barriers

Isolators and barriers provide intrinsic safety through galvanic separation or by diverting energy 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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Isolators
Isolators
Barriers
Barriers
Isolator and Barrier Accessories
Isolator and Barrier Accessories
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Intrinsically Safe Isolators and Barriers

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  • Intrinsically Safe Isolators
  • Barriers
  • Isolator and Barrier Accessories

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

Safety Isolator

Intrinsically Safe Isolators

Newest Additions!

  • Endress+Hauser Analog Input Isolators

Intrinsically safe isolation barriers provide galvanic isolation and safe transmission of analog signals from process instruments in 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
  • Analog modules are HART compatible
  • 1-channel, 2-channel, or signal doubler options
  • Integrated HART connection lugs/sockets
  • Optional pac-BUS on STAHL modules saves wiring time and money, and allows the system to be expanded at any time

Starting at
$220.00
(9170-11-13-21S)

STAHL intrinsically safe barriers

Barriers

Newest Additions!

  • More STAHL intrinsically safe Zener barriers

STAHL Zener barriers provide intrinsic safety and limit energy sent to a hazardous location by diverting fault energy as opposed to isolating the signal. A dedicated ground is required for each module.

  • Intrinsically safe Zener barriers for discrete PNP and NPN signals, pulse trains, analog signals, strain gauges, and thermocouple signals
  • All modules are dual-channel
  • Zener barriers save space over isolator modules
  • Grounding lugs on top and bottom of module

Starting at
$201.00
(9002/22-240-024-001)

accessories

Isolator and Barrier Accessories

Accessories for STAHL safety isolator and barrier installations include pac-Bus terminals that allow multiple modules to share a common power source, a configuration kit for temperature and frequency modules, and fuse kits.

Starting at
$23.50
(9194-50-01)

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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