I presume that an ABS sensor is a hall sensor?
I presume that an ABS sensor is a hall sensor?No, hall sensors have blades in a gap, not that there is anything wrong with the traditional magnetic trigger.
Also, W terminal is way easier, and you can add one to your alternator if you have a soldering iron(it taps on to any one of 3 stator windings.)
I presume that an ABS sensor is a hall sensor?No, hall sensors have blades in a gap, not that there is anything wrong with the traditional magnetic trigger.
Also, W terminal is way easier, and you can add one to your alternator if you have a soldering iron(it taps on to any one of 3 stator windings.)
But an abs sensor has lots of gaps/blades? Or is that what you mean? I just have some abs sensors and wonder how they worked exactly because I want to make one be the pickup for my revcounter and maybe another as a speedo pickup (I want to build a custom digital display.) I figured because of their purpose I maybe able to utilise them.
The reason for not using the 'w' terminal is the fact I dont have one, I dont really want to take my alternator to bits to fit one if I can help it! Basically because this would be in my camper, theres no standard rev counter that goes in, instead I was considering getting something like an Autometer Gauge (something big and fun looking) which alot of people fit to the normal aircooled campers (its just I chose to stick a diesel in mine!).
Well I know my alternator doesnt have a w terminal on it, its not a bosch one but a lucas unit thats been remanufactured (65amp) Typically I had a decent 90amp one off a newish caddy that had the W terminal, but due to a winter of it being under a tarpaulin the things siezed up! (yet the alternator off something else I have on the bench has been outside for 3 years there and still turns fine!)
does anyone have a link to a guide of fitting the w terminal to non w alternators?
Aside from that relating to my original question, how does the ABS sensor actually work? I need to rig one up for speed sensing.
Why bother when there is a sensor fitted to the pump that gives 2 pulses per rev - exactly what a revcounter would expect to see.
Well fitted to most pumps anyway....a pressure switch sat in the centre of the pump head with a NO output.
As soon as I've a running motor I'll make up a cable to do the signal conditioning, but putting a meter on at idle records around 32 HZ at idle which is 960 rpm.