API Proximity Switches:
Electrical signal for open/close 504 Model loading valve detection:
It signals when the loading valve gets opened by the lever. It can be realized with a EEx-d microswitch or a EEx-ia proximity switch.
Connection of the C-3659 model dry-disconnect coupling:
It is used to signal the API RP 1004 female part being connected to the respective male and the operating lever being turned in loading position. This signal is used on 740/750 or 2454-BC bottom loading arms. It is realized only with a proximity switch.
API Proximity switches
Connection of the C-3682 model vapour return coupler:
It is provided to signal that API RP 1004 vapour return female part (cam and groove) being connected to the respective male. This signal is used on 750 bottom loading arms. It is realized only with a proximity switch.