TESTO CU-2 User Manual page 9

AK ArbeitsKreis VDA (working committee of German automotive industry
alliance)
de facto standard communication protocol for test bench
components
PND1 primary Particle Number Diluter (ECE R83 compliant abbreviation)
Testo testo MD19-3E Rotating Disk Diluter
DF primary Dilution Factor
PND1
secondary Particle Number Diluter (ECE R83 compliant abbreviation)
PND2
diluter part of testo ASET15-1
DF secondary Dilution Factor
PND2
PCRF Particle Concentration Reduction Factor (ECE R83 compliant
abbreviation)
total dilution factor comprising DF
overall dilution (= concentration reduction) factor
f
r
of PCRF
Particle Number Counter (ECE R83 compliant abbreviation)
PNC
e.g. engine exhaust condensation particle counter EECPC from TSI
CPC Condensation Particle Counter
product name of particle number counter manufactured by TSI
EECPC Engine Exhaust Condensation Particle Counter
product name of ECE R83 compliant PNC manufactured by TSI
primary diluted measuring gas flow from the testo MD19-3E primary
Q
MD
diluter
Q secondary dilution air flow from the air supply part of testo ASET15-1
AS
Q secondary diluted measuring gas flow to the connected instrumentation
MG
Q excess secondary diluted measuring gas gas flow
EX
dilution factor of PND1 (testo MD19-3E)
dilution factor of PND2 (testo ASET15-1)
, DF and particle losses
PND1 PND2
4 System Overview
used as equivalent
9