I used something like this: http://www.ebay.com/itm/SMC-ZSE4-LCD-Readout-Digital-Pressure-Switch-for-Vacuum-ZSE4-01-25-/181468926790?pt=LH_DefaultDomain_0&hash=item2a40641346
The set-points are adjustable. You can find a wide variety of them on ebay. Mine had transistor output so I had to add a relay driver. On Thu, Sep 11, 2014 at 12:32 AM, Buddy Mills via EV <ev@lists.evdl.org> wrote: > I am looking for a vacuum switch that has a wider or adjustable range > between on and off. I am about to put two switches on and use a relay to > accomplish but was wondering if there was a simpler way to keep the vacuum > pump from cycling so often. > > > > Thanks, > > > > Buddy Mills > > <mailto:buddymi...@cox.net> buddymi...@cox.net > > > > Look mom, no gas. <http://www.evalbum.com/2887> > http://www.evalbum.com/2887 > > > > Disclaimer: No animals were harmed or killed in the process of writing > this > email. Any stories to the contrary are, for the most part, either > fictional > or greatly exaggerated. > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140911/0f695045/attachment.htm > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- www.electric-lemon.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140911/55b48135/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)