TESTO REXS, User Manual

Page: 9 / 42

4 System Overview
9
4.1.3. Functionality
Testo REXS is built up in a mobile 19'' rack. The straightforward design and clear layout ease its
operation. Indicators, display and software enable control and monitoring of the control
parameters.
4.2. The Benefits Are

Soot aerosol generator, simulating exhaust from a modern diesel combustion engine.

Real soot nanoparticles, reproducible in size and concentration.

Aerosol output flow approx. 700 l
N
/min.

Adjustable particle sizes of approx. 60, 80 and 100 nm.

Soot nanoparticles mass output of 1.5 g/h at 80 nm.

Capable to work against back pressure up to 500 mbar.

Flexible and simple operation.

Simple test bench integration.

Local and/or remote control.

Very low maintenance effort needed, low down-time.
4.3. Function Principle
Fig. 4.2: Function principle
4.4. The System
To operate testo REXS, only propane, nitrogen, compressed air, and one phase electricity is
required.
Gas and air supply, power supply and test bench devices mounted to the burner outlet have to be
provided and installed by test bench manufacturer. The block diagram in Fig. 4.2 shows the testo
REXS system design with all electrical and gas lines, by inputs and outputs.