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ISO7710: Digital Isolators and Intrinsically Safe certification

Part Number: ISO7710

I'm working on a project that requires to isolate an 'analog 4-20mA' transmitter from another intrinsically safe circuit. The main circuit must send a pwm signal to the 4-20mA tx to modulate the current . ISO 7710 can be the right product but certification body has some concern about isolation distance / fail mode . Do you have any certification or useful information , with focus on Intrinsically safe, to share with certification body ?

(I already found slyy081.pdf that can be useful)