API Vapour Coupler model 3682 is available with a proximity switch to provide a signal when the female coupler connects to a mating male adapter.

This API Coupler with proximity switch can be fitted to models 750, 750-LR and 2454 bottom vapour return arms. 

We can offer loading arms equipped with electrical components to signal many different positions or conditions. Signals can be given with the use of either electro-mechanical microswitches or proximity switches, both types are certified by ATEX certification