The G2 Series Electronic Ground Indicating Systems can be used as a Deadman System with a deadman switch in place of the ground clamp.  When the operator depresses the switch, the intrinsically safe monitoring circuit drives a switching relay that can, for instance, switch on a pump and initiate product flow.  If the operator releases the switch at any time, the relay opens and product flow is immediately stopped. 

Approvals:  cULus Class 1, Division 1, Group D.  Class 2, Division 1, Group E, F, G.
Options include red and green indicating lights, coiled cables, and a variety of cable storage and retracting reels.