Tachometer for Diesel Generator

Rewire your local meter using the same length of cabling as the remote meter.

Or put an amplifier on the long wire run.

Honestly, I don't have a clue.

Hallo Guest,

In addition to what lynlynch has said, I think you should confirm that they are both responding to the same signal ie same input from speed converter. What is the signal input (Volts or frequency)? Once you confirm that the signal source is the same for both then check the wiring for signal loss and strays. I had a case where the control room display face had been replaced with a wrong one after the old one wore out due to pointer rubbing. If you are getting the same input values on both displays yet output is varying then recalibrate.

Hi Guest,

Many eletronic tachmeters have in the back one local for adjustment. Try to adjust by the intructions in the same place, but obviously if the engine is not running the display must show "0" rpm.

Assuming both tachos are using the same signal then the obvious solution is substitution!

(Is there any chance that the local display is an analogue mechanical drive and the remote is from a tacho generator or flywheel pick up?)

Calibrate the local meter, with no power at all, to zero.

Do you get the correct reading now?.....

Yes.....Fixed

NO......Then install it on the wiring of the control room meter. Does it read correctly now?.......

Yes..... "local" wiring error

NO..... Meter is faulty.....replace meter.

Why are you displaying engine speed rather than frequency, which is more usual for generators. I would guess from the speed that it is a generator in the MW range.

Regards

Chas

How do you delete a message posted in error?

Assuming both tachos are using the same signal then the obvious solution is substitution!

(Is there any chance that the local display is an analogue mechanical drive and the remote is from a tacho generator or flywheel pick up?)

Calibrate the local meter, with no power at all, to zero.

Do you get the correct reading now?.....

Yes.....Fixed

NO......Then install it on the wiring of the control room meter. Does it read correctly now?.......

Yes..... "local" wiring error

NO..... Meter is faulty.....replace meter.

Why are you displaying engine speed rather than frequency, which is more usual for generators. I would guess from the speed that it is a generator in the MW range.

Regrds

Chas