Pulse width duration for pulse counters?

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mminehan
Posts: 33
Joined: Wed Oct 14, 2015 1:08 am

Pulse width duration for pulse counters?

Post by mminehan » Tue Dec 22, 2015 4:56 pm

I'm having trouble with the accuracy of the pulse counters. Over time the counters seem to miss quite a few pulses and the counter increasingly lags behind the actual meter.

I read on the forums that the minimum pulse duration for the GEM is 550ms. That's less than 2 pulses per second. And with my meter is generating 2 pulses per litre (2 pulses per rotation) with the pulse being only 2 x 1 tenth of a rotation, I figure the pulse duration is probably less than 550ms. Hence the GEM is missing the occasional pulse.

Is there a way to fix this? A setting somewhere? Or is it hard coded into the firmware? Can I use a frequency divider circuit to solve this problem?

When I use the 1-wire counter module from hobby boards it counting was much more accurate.

Any advice would be appreciated. Thanks, Marty.
ben
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Posts: 4269
Joined: Fri Jun 04, 2010 9:39 am

Re: Pulse width duration for pulse counters?

Post by ben » Wed Dec 23, 2015 10:36 am

Marty,

Paul says you can use a divider. We aren't able to make the pulse counters any faster unfortunately.
Ben
Brultech Research Inc.
E: ben(at)brultech.com
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