Chapter 12 - Clocks and Associated Devices - Prevent-Stripping Equipment (P.S.E.) (Geheimhalteeinrichtung): Mechanical P.S.E.Chapter 12 - Clocks and Associated Devices - Prevent-Stripping Equipment (P.S.E.) (Geheimhalteeinrichtung): ZUS-40 Anti-Withdrawal Device
GERMAN UNDERWATERS ORDNANCE MINES
Chapter 12 - CLOCKS AND ASSOCIATED DEVICES
PREVENT-STRIPPING EQUIPMENT (P.S.E.) (GEHEIMHALTEEINRICHTUNG)
SEA-CELL P.S.E. (Used with MA 101 Unit in Mine Type BM 1000)

This device consists of two wires, made of dissimilar metals, which are coated with a salt and laid side by side in a small trough. If humidity or moisture enter the trough, the salt dissolves, creating a small battery cell. The cell operates a sensitivity relay, com-pleting a circuit from the main battery to a special P.S.E. detonator, firing the main charge.

The device becomes armed when the firing unit arms and has only been found fitted to MA 101 in Mine Type BM 1000. The presence or absence of this device cannot be de-termined from an examination of the exterior of the mine case.