SISO3 is an associated device to ISAS3. It electrically isolates the intrinsically safe circuit from non-intrinsically safe circuit such as the data acquisition system. SISO3 can be installed in ATEX zone 2 environments. It limits the current, voltage, power and pulse energy supplied to the integral ISAS3 preamplifier to safe level even in case of two worst failures.
SISO3 ATEX/CENELEC code: Ex II 3 (1) G Ex nA [ia Ga] IIC T4 Gc

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