System Overview; Introduction; Testo Cu-2 Digital Control Unit; Testo Nanomet Software - TESTO CU-2 User Manual

4 System Overview

Warning
Warning means that improper operation could cause a serious human or
instrument damage or injury with consequence of irrevocable instrument
damage.
Electric Shock
Hazardous voltage. Contact may cause electric shock or burn. Turn off and lock
out system power before servicing.
Electric Ground
This sign indicates that the mains connector and cabinet ground are connected
to protective earth PE.
4 System Overview
4.1.

Introduction

4.1.1.

testo CU-2 Digital Control Unit

testo CU-2 Digital Control Unit is an accessory for the testo MD19-3E which is the Rotating Disk
Diluter with external diluter head for performing the primary dilution as close as possible to the
aerosol source. testo CU-2 is equipped with interfaces to control testo MD19-3E Rotating Disk
Diluter and testo ASET15-1 Air Supply / Evaporation Tube and to read the digital signal of a
condensation particle counter CPC. Besides, several analog and digital input and output signals
can be handled.
4.1.2.

testo NanoMet Software

The testo NanoMet software is intended to control the testo CU-2 Digital Control Unit and
therewith the connected particle measurement components like testo MD19-3E Rotating Disk
Diluter and testo ASET15-1 Air Supply / Evaporation Tube. The testo NanoMet software also
allows the user to read a digital signal from a CPC and to determine the functions of the analog
ports of testo CU-2.
The testo NanoMet software supports AK protocol. This permits the communication with an AK
host computer and therewith the easy integration of the testo CU-2 controlled particle
measurement system into a test rig.
4.2.

Definitions

testo MD19-3E
testo ASET15-1 Testo Air Supply / Evaporation Tube unit supplies dilution air to the
Raw gas
Dilution air
Measuring gas
4.3.

Abbreviations, Units and Symbols

LED
CVS
8
third generation of Testo Rotating Disk Diluter with external diluter head
for primary dilution as close to the emission source as possible
testo MD19-3E primary diluter and undertakes the thermal conditioning
and secondary dilution of the aerosol
undiluted aerosol from the emission source
filtered and therewith particle free compressed or ambient air which is
fed to the primary or secondary diluter
primary or secondary diluted aerosol from the emission source
(combustion engine or CVS).
Light Emitting Diode
signal lamps at the front of testo MD19-3E, testo ASET15-1, and
testo CU-2
Constant Volume Sampler
test rig component; combustion engine exhaust dilution tunnel