TESTO ASET15 1 User Manual

testo ASET15 1

User Manual

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Content

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Content

1 Declaration of Warranty ............................................................................................... 5

1.1. Type of Designation ....................................................................................................................... 5

1.2. Manufacturer ................................................................................................................................ 5

1.3. Warranty ....................................................................................................................................... 5

2 Precautions ................................................................................................................... 5

2.1. Foreword ....................................................................................................................................... 5

2.2. Liabilities ....................................................................................................................................... 5

2.2.1. Liability to Content ............................................................................................................... 6

2.3. Copyright © ................................................................................................................................... 6

3 Safety ............................................................................................................................ 6

3.1. Risk Types ...................................................................................................................................... 6

3.1.1. Aerosol Contamination......................................................................................................... 6

3.1.2. Hot Surfaces – Burn Hazards................................................................................................. 6

3.1.3. Electrical Safety .................................................................................................................... 6

3.1.4. Mechanical Shock................................................................................................................. 6

3.2. Labels and Explanations ................................................................................................................. 7

4 System Overview........................................................................................................... 8

4.1. Dilution and Conditioning .............................................................................................................. 8

4.1.1. Principle ............................................................................................................................... 8

4.1.2. ThermoDilution .................................................................................................................... 8

4.2. Definitions ..................................................................................................................................... 9

4.3. Abbreviation, Units and Symbols .................................................................................................... 9

4.4. The System .................................................................................................................................. 10

4.5. Control Elements and Connections............................................................................................... 11

4.5.1. Important Remarks ............................................................................................................ 11

4.5.2. Front View ......................................................................................................................... 11

4.5.3. Gas Connectors .................................................................................................................. 12

4.5.4. Rear View........................................................................................................................... 13

5 Installation and Setup ................................................................................................. 14

5.1. Integrating testo MD19-3E into the testo ASET15-1 ...................................................................... 14

5.2. Gas/Aerosol Connections ............................................................................................................. 15

5.2.1. Quick Couplings at the front of testo ASET15-1 ................................................................... 15

5.2.2. Connect a Sensor to the Measuring Gas Inlet of the Evaporation Tube ................................ 15

6 Operating Instructions ................................................................................................ 16

6.1. Start Up ....................................................................................................................................... 16

6.2. Evaporation Tube Heating Up Procedure ...................................................................................... 16

6.3. Flows and Control LED's in Air Supply Part .................................................................................... 17

6.3.1. Signal LED Information ....................................................................................................... 18

6.3.2. Flow Settings and Dilution Factors ...................................................................................... 18

Content

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6.3.3. Influence of Instrumentation Connected to the Additional ET Inlet Port .............................. 18

6.4. Remote Operation ....................................................................................................................... 19

7 Electrical Connections ................................................................................................. 20

7.1. Mains Supply ............................................................................................................................... 20

7.2. Analog/Digital Interface ............................................................................................................... 20

7.3. Remote Control ........................................................................................................................... 22

8 Maintenance and Calibration ...................................................................................... 22

8.1. Evaporation Tube......................................................................................................................... 22

8.2. Parts with Limited Lifetime .......................................................................................................... 22

8.3. Storage, Acclimatization............................................................................................................... 22

8.4. Operation Environment Requirements ......................................................................................... 23

9 Appendix ..................................................................................................................... 24

9.1. Extent of Delivery ........................................................................................................................ 24

9.2. Specification, Technical Data ........................................................................................................ 24

9.3. Thermophoretic Losses ................................................................................................................ 25

9.4. Definitions, Units and Conversion Table ....................................................................................... 26

10 Designation of All testo ASET15-1 Air Supply / Evaporation Tube Elements ............... 27

1 Declaration of Warranty

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1 Declaration of Warranty

Manual Version History:
Version: V1.1
Date: September 2016

1.1. Type of Designation

This user manual refers to the instrument type and version as listed below. It replaces all
previously dated user manuals for this instrument.

Type: testo ASET15-1

1.2. Manufacturer

Testo SE & Co. KGaA
Testo-Strasse 1
79853 Lenzkirch
Germany

Tel: [phone]
Fax: [phone]
web: www.testo-particle.com
email: [e-mail]

For technical support contact your local service contractor or Testo techsupport.

email: [e-mail]

1.3. Warranty

Testo SE & Co. KGaA warrants that this product adheres to the specified properties for a period
of twelve (12) months from the date of delivery.

Excluded from the warranty are all parts subjected to normal wear as any fuses, batteries or
other consumable parts. Also excluded are: Defects resulting from abnormal use, in particular
outside the intended purpose; lack of maintenance; improper use or malicious damage. Warranty
is void if actions are carried out which are not described in the documentation nor authorized by
Testo SE & Co. KGaA.

Testo SE & Co. KGaA does not provide any warranty on finished goods manufactured by others.
Only the original manufacturer's warranty applies.

There are no user-serviceable parts inside testo ASET15-1 and some very sensitive parts. Do not
open your testo ASET15-1, as you may damage it. Warranty is voided if the case is opened and
warranty-seal is broken.

Parts repaired or replaced as a result of repair services are warranted to be free from defects in
workmanship and material, under normal use, for 90 days from the date of shipment.

2 Precautions

2.1. Foreword

This manual guides you through the installation, starting up, operation and maintenance
procedures of the testo ASET15-1. In detail you will find information about the system as

 safety
 functionality of the testo ASET15-1, technical information and specifications
 installation of the testo ASET15-1 and accessories
 handling, operation, maintenance and troubleshooting

Follow the instructions provided by this manual for safe and proper operation of the testo
ASET15-1 Air Supply / Evaporation Tube.

Before installing and operating the testo ASET15-1, the operator or service has
to read carefully this manual. For improper function, damages or injuries caused
by ignoring the instructions by this manual no liabilities are accepted.

2.2. Liabilities

Testo SE & Co. KGaA accepts no liability to improper function or injury caused by

 neglecting the instructions provided by this manual or instructed person.
 improper installation, operation, application, or maintenance.
 operation by untrained staff.

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 any technical modification not carried out by Testo SE & Co. KGaA or an authorized

service partner.

 use of not genuine spare parts.

2.2.1. Liability to Content

The content of this manual is generated with most accurateness. Testo SE & Co. KGaA does not
guarantee completeness, correctness and being up to date. Testo SE & Co. KGaAreserves the
right to revise the content of the manual at any time and without notice.

Follow the guidelines below to ensure proper operation of the instrument:

 Read this instruction manual before installation and operation.
 Always use genuine replacement parts supplied by Testo SE & Co. KGaA.
 For operating the testo MD19-3E Rotating Disk Diluter integrated in the testo ASET15-1,

refer to the testo MD19-3E user manual.

2.3. Copyright ©

All work and contents done or generated by Testo SE & Co. KGaAare subject of the German
copyright © and law for intellectual property. This copyright includes all specification data of the
instrument or part of it, electrical and fluidic and mechanical schematics, pictures, diagrams and
text. Copying, editing, publishing or any other utilisation requires a written agreement of
Testo SE & Co. KGaA.

3 Safety

3.1. Risk Types

The following diagram shows typical risks that could cause damage or injury while handling the
testo ASET15-1 Air Supply / Evaporation Tube.

Fig.3.1 : risk types

3.1.1. Aerosol Contamination

Toxic aerosols may escape from the device, if the excess and measuring gas ports are not
properly connected to the sensors downstream or an offtake.

3.1.2. Hot Surfaces – Burn Hazards

The evaporation tube is heated up to 400°C/752°F. Therefore, the pipes and other parts on the
rear side of the device may be hot and must not be touched. Always ensure good air circulation
around the heated parts. Do not use the device if the fan for gas cooling on the rear side of the
device does not work properly.

3.1.3. Electrical Safety

When in operation any electrical equipment can produce dangerous voltages. Failure to observe
the warnings may result in serious injury or damage. It is, therefore, mandatory that only suitably
qualified personnel use this instrument. Satisfactory and safe operation of this instrument calls for
proper handling in transportation, storage, installation as well as careful control and maintenance.

3.1.4. Mechanical Shock

Parts of the Instrument are thermally insulated by a quartz glass tube that may be damaged
when exposed to intense mechanical shock. The device should be handled with care.

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3.2. Labels and Explanations

When operating the testo ASET15-1, the user always is operating under certain risk factors as
electricity, hot surfaces, and the aerosols which are processed by the dilution and conditioning
system. Therefore the testo ASET15-1 includes several safety features. Nevertheless, some
precautions still need to be taken to ensure safe and reliable operation. Listed labels, Caution
and Warning are explained in general, and the further specific labels refer to type of hazard and
danger.

Caution
Caution means be careful. If you do not follow the manual instruction you might

cause an instrument or accessories damage, but no human injury. Also Caution
refers to important information about installation, operation and maintenance.

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.

Skin Burn
Hot surface. Do not touch. To avoid possible skin burns, wear heat protection

gloves or turn heating off and allow surfaces to cool down before servicing.
Ensure good air circulation around labeled parts.

Aerosol
Aerosols containing invisible nanoparticles and toxic exhaust gases are handled.

Some aerosols may escape from the testo ASET15-1 if the excess gas and
measuring gas ports are not thoroughly connected to an offtake and the aerosol
sucking sensors.

4 System Overview

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4 System Overview

4.1. Dilution and Conditioning

4.1.1. Principle

testo ASET15-1 Air Supply / Evaporation Tube is an accessory for the testo MD19 which is the
Rotating Disk Diluter with external diluter head for performing the primary dilution as close as
possible to the aerosol source.

This combination complies with the method of ThermoDilution according to the regulation for
nanoparticle measurement UN-ECE R83 and R49. ThermoDilution with testo MD19 and testo
ASET15-1 separates sampling, dilution and conditioning of the aerosol into the following steps:

 Primary dilution of combustion engine emissions from tail pipe or CVS with the testo

MD19-diluter. testo ASET15-1 generates the primary dilution air for the testo MD19­diluter with a calibrated and controlled flow of 1.5 l/min.

 Removal of volatile particles in the Evaporation Tube where the temperature can be

adjusted up to 400°C (recommended heating temperature according to GRPE­draft = 300 °C). No recondensation takes place in the cooling down zone assuming the
measuring gas is below the dew point after primary dilution.

 Secondary dilution in an adjustable dilution factor range from 1 to 11 in a mixing

assembly whose construction minimizes thermophoretic losses. The primary diluted
measuring gas from the primary testo MD19-3E diluter with a flow of 1.5 l/min and the
evaporation tube is diluted with secondary dilution air generated in testo ASET15-1. Its
flow is adjustable in a calibrated range of 0...15 l/min corresponding to a dilution factor
range of 1...11. The total measuring gas flow, up to 16.5 l/min enables the user
furthermore to connect nanoparticle instrumentation, which consumes higher measuring
gas flows than can be drawn from the testo MD19-diluter, whose diluted measuring gas
flow is limited to 5 l/min.

4.1.2. ThermoDilution

Fig. 4.1 shows a schematic plot of the mass concentration of a volatile compound against the
temperature of the surrounding gas. In a dilution tunnel both the concentration and the
temperature of the substance are reduced (path A

B). During dilution, the compound passes

its dew point and nucleates into nanodroplets (curve N). Subsequent secondary dilution (B

D)
will reduce the number concentration of the droplets, but is unable to evaporate them, because of
a hysteresis effect between nucleation and evaporation.

A strategy to avoid the mere formation of nanodroplets is direct sampling from the hot exhaust in
combination with hot dilution (A

C). Given a sufficient dilution factor, the volatiles will not

nucleate during subsequent cooling (C

D) even though the same final state is assumed as

through dilution tunnel and secondary dilution (A

B

D). However, in some applications e.g.
measurement on CVS tunnel, direct sampling is not possible, and nanodroplets already exist in
the gas sample (B). In those cases the diluted gas sample (D) has to be heated above the
evaporation point of the compound (C

D, crossing curve E). Like with hot dilution, the
compound remains in vapor phase upon subsequent cooling
(C

D). The combination of diluter and heater (B

D C

D) is known as ThermoDiluter.
Hot dilution is realized in Testo rotating disk diluters. Together with Testo rotating disk diluter
testo MD19-3E the testo ASET15-1 forms a complete ThermoDiluter system.

Fig.4.1: volatile mass diagram

4 System Overview

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4.2. Definitions

Air Supply

primary and secondary dilution air supply part of testo ASET15-1

Evaporation
Tube

thermally insulated stainless steel tube with electronically controlled
heater on the testo ASET15-1 rear side for heating up the primarily
diluted measuring gas.

Raw gas

undiluted aerosol from the emission source

Measuring gas

primary or secondary diluted aerosol from the emission source
(combustion engine or CVS).

Primary dilution

Takes place in testo MD19-3E rotating disk diluter before the
measuring gas enters into the evaporation tube.

Secondary
dilution

Dilution of the primarily diluted and thermally conditioned measuring
gas at the outlet of the evaporation tube.

4.3. Abbreviation, Units and Symbols

testo ASET15-1

Air Supply Evaporation Tube; 15 = 15 l/min air supply; 1 = version 1

CVS

Constant Volume Sample – fullstream dilution tunnel in vehicle test
benches

DF

Dilution Factor in secondary dilution: DF = (QAS + QMD)/ QMD

PCRF

Particle Concentration Reduction Factor

LED

Light Emitting Diode – used as signal lamps at the front of the testo
ASET15-1

l/min (STP)

Standard liter per minute: unit for gas volume flow at Standard
Temperature and Preasure (STP: 1013,25 hPa, 0°C)

testo MD19-3E

Type designation for Testo rotating disk diluters

QMD

primary diluted measuring gas flow from the testo MD19-3E primary
diluter

QAS

secondary dilution air flow from the air supply part of testo ASET15-1

QMG

secondary diluted measuring gas flow to the connected instrumentation

QEX

excess secondary diluted measuring gas gas flow