Big John T said:
WireGuy1950 thanks for the reply, That type of device has a clip around which could not be used in this application. Also it has no output that could be used by the plc. I need something like a prox that I can move close to the spark plug wire with a pneumatic slide and have the output go to a highspeed counter input on my plc. I'm not really that interested in the RPM but the time to come to a complete stop in this application but the applications next to this one are RPM...
Thanks
John
John
IF I understand correctly
1. You want to measure the time from when you hit the stop button to when the engine stops rolling.
2. You do not want to attach anything to the engine.
3. Later on you may want to measure RPM
How about using sound level meter
measure sound before starting the engine (backgroun)
measure sound while engine running
kill engine
read stopwatch
when sound level returns to background engine stopped stop the stopwatch. You got your time.
What gets me is
IF this is in a factory or on a test stand and you have to attach fuel lines, throttle, kill switch, etc etc then why not a tach or whatever to indicate engine is running or not running??
Dan Bentler
Interesting -- I edited to eliminate word a m b i e n t so that it did not appear as ******t. why is that?? I thought it was a perfectly decent word and not indecent.