Issues regarding combined certification for explosion protection

2017-09-02View Original

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Dear all: How should we understand the explosion protection certification Exd iiB T4 Gb?

Reply #22017-09-02

It is both explosion-proof and intrinsically safe, which is quite common. Especially foreign instruments.

Reply #32017-09-02

EX explosion protection mark, d flameproofing, ia intrinsically safe, II equipment for industrial use, B explosion protection class (up to class C), T4 maximum surface temperature of 135 degrees Celsius.

Reply #42017-09-10

Have met Ex de and Ex ed

Reply #52020-12-14

This is a flameproof product that uses associated equipment, which is of intrinsically safe Class IA.

Reply #62023-10-10

This should be an explosion-proof device equipped with a intrinsically safe power supply

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Issues regarding combined certification for explosion protection

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