Dear Pico friends:
I have from my FLUKE 88 Automotive Meter an RPM clamp for the "conventional" sparkplug wire.
Does anybody know how to make a Custom Probe for PICO 6 and/or 7?
I hooked up the the RPM clamp to + and - on the Pico at 12 Volts and get like a secondary pattern, but I can't figure out how to convert it to RPM, or do I have to go into the math channel?
Fluke 88 connects the rpm to the DC-Volt with the conversion @ the 'blue' RPM button.
If someone has a file and is willing to share please e-mail too: fast@furtmair.com
Thanks in advance,
Uli
Furtmair Auto Services Inc.
51 Bridge Street East
Kitchener, Ontario
N2K 1J7 - CANADA
Reading your post, I was not sure how 12 Volts was relevant (Forgive me here) “I hooked up the the RPM clamp to + and - on the Pico at 12 Volts and get like a secondary pattern”
Given this is an inductive pick (to be attached to an HT cable) it may be heavily attenuated and to create a custom probe we need this attenuation value.
It is great news you can see a secondary ignition pattern as the device would appear to be functioning as intended.
In order to obtain engine speed, you will need to create a math channel.
We have discussed something similar here viewtopic.php?p=97581#p97581 that I hope will help
Depending on the output, gain and shielding of the RPM probe, using maths maybe tricky and you will have to amend the formulas depending on a number of factors such as "style" of ignition system, cylinder count and probe noise levels.
Using the Crank math channel would quicker if your vehicles utilise these sensors
pick # of cylinders, put sec. clamp on coil wire and here is the RPM displayed.
Please help
Thanks
Uli
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Hi Steve:
Thanks for your reply, but I can't figure it out.
Long story short: I have a "MM-Adapter" and that what is used!
Fine I tried it now: With the PICO AUTO-PROBE MI074 can generate same signal as with the FLUKE-Clamp.
Regardless, I can't figure out how I get a RPM reading with the PICO MI074 (or Fluke).
Please send me math formula.
I actually use my old wall size Allen Comp Center to get rpm. --> pick # of cylinders, put sec. clamp on coil wire and here is the RPM displayed.