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TECH BLOG

We are always updating pour tech blog with articles on instrument theory, operation and installation.  The links below will take you through our posts.  Make sure to take some time and check them out:

ELECTRONIC SPEEDOMETER HOW TO AND WHY FROM NVU

Posted by NVU Tech staff on February 03, 2016

 

TECHNICAL SCREEN PRINTING

Posted by NVU Tech staff on April 13, 2016

 

METERS AND MOVEMENTS

Posted by NVU Tech staff on August 4, 2016

 

INTERFACING WITH GM PCMS, LS, DURAMAX, ETC

Posted November 3, 2016

 

ALL ABOUT SENDERS

Posted May 1, 2019

 

TACHOMETER INSTALLATIONS

Posted June 26, 2019

 

EMI INTERFERENCE & HOW TO REMEDY

Posted June 20, 2021

 

MORE INSTALLATION ODDS AND ENDS

Just some miscellaneous things we have learned over the years

Posted By NVU on August 25th, 2021

DIESEL TACHOMETER PPR CALCULATION

SIGNAL CALCULATION:
Given the continual introduction of alternator styles, it is
advisable to determine the PPR of the application before
installation.
 
The PPR calculation is PPR = P*R/2
----------------------------------------------------
"P" is the number of poles in the alternator.
----------------------------------------------------
"R" is the pulley ratio. Determine the pulley ratio by
dividing the crank pulley diameter by the alternator pulley
diameter.
Example:
 
# of poles 18
-------------------------------------------
Crank pulley diameter is 4.5"
-------------------------------------------
Alternator pulley diameter is 2".
-------------------------------------------
PPR = (18*(4.5/2))/2 = 20.25 PPR

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