Jinma 284 Tach died

[TimberFarm]

Where did you get the part from?
My tach died quite a while ago.

 

[piper184]

Circle G. They have both sizes in stock.

 

[Bob Rooks]

I have a NOS meter you can have to use as a tach readout.

Panel Meter - 1/8 DIN, Temperature, Process | Omega Engineering

DP20 universal panel meter with high performance & Output Options: 1/2 Relay, Analog 4 to 20 mA Isolated Output, Modbus RTU Isolated Serial Output .

www.omega.com

Also,

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[piper184]

Thanks Bob,

From what I can tell the DP20 only reads Hz up to 100. If I used a 60 tooth trigger (one pulse per second @ 1 RPM) it would display as a direct RPM number but would only work up to 100 RPM.

Any trigger tooth count other than 60 would require a conversion factor to RPM, which I didn't see in the manual. Easy enough to make a wall chart for reference...

I'm pretty sure the Jinma reluctor puts out a pretty steady voltage and the tach is calculating off of the frequency and would be accurate only for a ring gear with the same number of teeth. Did I miss something?

When I get time I will look at the Murphy site to see what kinds of displays they have.

Thanks for all the info.

 

[Bob Rooks]

Sorry. What I have is these:
KEP m/n MRHA3M

Red Lion m/n APLVA

Actually, I don't think these would work either, but let me know if you have a use for them.