EX Safety Barriers

EX safety barriers are used for protection of human life in those application where hazardous power line leakage or high voltage transients are possible.

We offer a complete range of functions, designs, and variants for isolating, conditioning, processing, converting, and matching digital and analog signals in control and automation. The various designs meet the highest industrial standards and ensure flexibility in the planning, construction, and expansion of your industrial plant.

The intrinsic isolation amplifiers that provide the highest level of protection for your plants’ hazardous areas are manufactured by world’s leading companies:

• Turck,
• Schmersal,
• Leuze

EX safety barriers supply power to the sensors in a hazardous area, receive a proportional current, convert digital input signals to output signals, amplify them and transfer switching signals to a control device. Signals can be connected up to Zone 0/Div. 1 in order to limit the energy to the field, thereby ensuring no explosion is possible.

As these devices are designed for a voltage range between 20-250 VAC/20-125 VDC, you can connect them to any industrial supply network. This considerably simplifies your device selection, stock‑keeping and spare parts management.

The intrinsic isolation amplifiers offer not only sufficient power reserves and reliable protection against under- and overvoltage, but they also meet explosion protection requirements.

A wide selection range of the EX Safety Barriers provide you with the flexibility and versatility you need in order to create tailored solutions for your application: compact designs, flexible operating concepts and configurations, as well as a wide range of functions for isolating, conditioning, processing, converting and matching digital and analog signals in 1- to 4‑channel versions.

Regardless of whether for standard or special applications, for simple or complex requirements, with manual setting or PC programming, with status indication or differentiated diagnostic functions – the Ex isolation amplifiers are suitable for universal use and cover the entire range of high performance tasks.

Typical Applications for the use of isolation amplifiers:

• Monitoring plant components such as pumps, drives, and boilers,
• Controlling critical application, e.g., paint shops, gas- and oil-pipelines, etc.,
• Connecting safety devices to control panels.

Industries:

• Chemical,
• Oil/gas production and processing,
• Pharmaceutical,
• Food and beverage,
• Wastewater,
• Steel production and
• much more.

The Wilhelm Niemann Maschinenfabrik installs space saving isolating switching amplifiers and temperature measuring amplifiers from Turck’s IMX12 interface series in the control cabinet. These send the signals of the operator buttons to the field and transfer intrinsically safe digital and analog input signals.

Namely, W. N. Maschinenfabrik is a company that manufactures mixers and mills for the paint, varnish, and chemical industry. Customers use them almost exclusively in explosion hazardous areas.

Niemann produces three basic machine types, the dissolver, the basket mill, and the “Butterfly” Kreis dissolver. One thing is common to all machines – their use in explosion hazardous areas. Read more