Intrinsically safe circuits that artificially limit energy are used in explosive atmospheres. In such circuits, intrinsically safe signal converters with galvanic isolation and surge protection devices (SPDs) that meet Exi standards provide excellent protection for sensitive electronics. This is all the more important because lightning strikes or electromagnetic interference near the instrumentation cables can cause an explosion.
Impulse overvoltage induced in control and measuring circuits can disrupt the operation of the entire enterprise. VARITECTOR SPC EX provides reliable surge protection for equipment located in hazardous areas of classes 0, 1 and 2. Plug-in arresters comply with the highest Exi standards in the field of intrinsic safety, as well as IEC 61643-21: 2008, for surge protection categories D1, C2 and C3.
ACT20X-HUI-SAO-LP is an intrinsically safe converter of standard signals of current circuits, temperature and resistance sensors. The compact module with a width of 12.5 mm is powered by the current loop of the 4 … 20 mA output signal. ATEX, IECEx, and cULus Ex certified make the ACT20X ideal for use in hazardous areas around the world.
VSPC EX takes up little space in the control cabinet, having a width of only 17.8 mm.
For use in hazardous areas up to class 0
Due to compliance with the standards Ex II 1 G Ex ia II C T4 … T6 Ga and Ex II 1D Ex ia III T135 ° C … T85 ° C Da VARITECTOR SPC EX surge protection device can be used in zones 0, 1 and 2.
VSPC EX is a specialized, intrinsically safe SPD. Low inductance (Li) and capacitance (Ci) do not impair spark protection.
Signal conversion in hazardous areas
ACT20X is approved for installation in class 2 zones and can convert signals from class 0, 1, and 2 zones for processing by the controller. The devices comply with ATEX, IECEx, and cULus Ex Div 1. standards.
Universal Intrinsically Safe Solution
The ACT20X-HUI-SAO-LP analog signal converter isolates and converts signals from ± 25mA, ± 28V sensors, potentiometers up to 500 kOhms, resistances up to 12 kOhm, as well as signals from resistance thermometers and thermocouples.
Configuration using FDT / DTM
FDT / DTM standard software allows for quick and convenient configuration of ACT20X devices, as well as monitoring and diagnostic functions.