Signaling device SB

SB, SB-S, SBK-S signalling unit uses the closed-circuit current principle, also available without a relief bore for monitoring leakages The signalling membrane is mounted directly between the flanges on the venting side of the rupture disc. When the rupture disc breaks, the pressure of the discharging process medium destroys the SB-S membrane and the intrinsically safe circuit is broken. This sends an error message to the process control system.