Emmisions low,,no reading.

Section 7.4 from the inspection manual.

Information column

Some low emission diesel engines (mainly Euro 3. IV) and those which will not reach maximum revs
(due to design features) may fail to trigger a reading
due to the very low levels of smoke produced.
If the DSM does not register a reading or shows an error, the printout should be marked accordingly showing that the emissions limits were tested and met but the DSM could not register the reading.
If the DSM will not produce a printout then the tester must make a written note of the following: -
 Test Station number
 Testers name
 Date & time
 Test number
 That the vehicle passed the emissions test
 No print out was produced due to low emissions.
This information must be recorded and kept with the emissions records for audit purposes for 3 months.

I normally just print section 7.4 & fill in the details it saves you having to write everything out , time is very precious where I work pmsl...then as usual staple it to the inspection sheet .. ?

There is a templet on here somewhere in one of my posts you can print off........if you can find it through the search button.

our suns the same,pretty much anything below about .3 but our other smoke meter(omitec)reads all the way down to zero cos of an acoustic type trigger.

our spx 600-72 smoke meter reads down to zero, and using the eobd socket, allows it to read rpm and oil temp, so it knows the revs have increased. i would have thought sun would have produced new software for some of the older machines.?