Endress+Hauser analytikjena multi N/C UVHS User manual

Operating Manual
multi N/C UVHS, multi N/C pharma UV
TOC Analyzer

Manufacturer Analytik Jena GmbH
Konrad-Zuse-Strasse 1
07745 Jena / Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Technical Service AnalytikJenaGmbH
Konrad-Zuse-Strasse 1
07745 Jena / Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
General Information http://www.analytik-jena.com
Documentation Number 11-0110-007-23
Edition C (12/2021)
Technical Documentation Analytik Jena GmbH
© Copyright 2021, Analytik Jena GmbH
For a proper and safe use of this product follow the instructions. Keep the
operating manual for future reference.

multi N/C UVHS, multi N/C pharma UV Table of contents
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Table of contents
1 Basic information............................................................................................................................................................ 7
1.1 About this user manual .................................................................................................................................... 7
1.2 Intended use ..................................................................................................................................................... 8
2 Security............................................................................................................................................................................ 9
2.1 Safety labeling on the device ........................................................................................................................... 9
2.2 Requirements for the operating personnel..................................................................................................... 10
2.3 Safety instructions, transport and commissioning ......................................................................................... 10
2.4 Safety instructions: during operation .............................................................................................................. 11
2.4.1 Summary of safety instructions ....................................................................................................................... 11
2.4.2 Safety instructions – protection against explosion and fire........................................................................... 12
2.4.3 Electrical system safety instructions................................................................................................................ 12
2.4.4 Safety instructions for the operation of compressed gas containers and compressed gas systems............ 12
2.4.5 Safety notes on UV radiation ........................................................................................................................... 13
2.4.6 Handling of auxiliary and operating materials ............................................................................................... 13
2.4.7 Safety instructions – maintenance and repair ................................................................................................ 13
2.5 Behavior during emergencies .......................................................................................................................... 14
3 Function and design ....................................................................................................................................................... 15
3.1 Layout................................................................................................................................................................ 15
3.1.1 Sample supply system ...................................................................................................................................... 16
3.1.2 Hose system...................................................................................................................................................... 17
3.1.3 UV reactor with control gear............................................................................................................................ 19
3.1.4 Measuring gas drying and cleaning................................................................................................................. 19
3.1.5 Detection........................................................................................................................................................... 21
3.1.6 Indicator and control elements, connections.................................................................................................. 22
3.1.7 Reagents and accessories................................................................................................................................. 23
3.2 Additional options for the analyzer ................................................................................................................. 24
3.3 Function and measuring principle ................................................................................................................... 24
3.4 Measuring methods ......................................................................................................................................... 25
3.4.1 TC analysis......................................................................................................................................................... 25
3.4.2 TOC analysis...................................................................................................................................................... 25
3.4.3 TIC analysis ....................................................................................................................................................... 26
3.4.4 NPOC analysis................................................................................................................................................... 26
3.4.5 DOC analysis...................................................................................................................................................... 26
3.5 Calibration......................................................................................................................................................... 27
3.5.1 Calibration strategies........................................................................................................................................ 27
3.5.2 Daily factor ........................................................................................................................................................ 27
3.5.3 Calibration method........................................................................................................................................... 28
3.5.4 Method characteristics..................................................................................................................................... 29
3.5.5 Other calculations............................................................................................................................................. 29
3.6 Blank values ...................................................................................................................................................... 30
3.6.1 Water blank values ........................................................................................................................................... 30
3.6.2 Reagent blank value ......................................................................................................................................... 31
3.6.3 Eluate blank value ............................................................................................................................................ 31
3.6.4 Boat blank value ............................................................................................................................................... 32
3.7 System suitability test....................................................................................................................................... 32

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4 Installation and commissioning..................................................................................................................................... 34
4.1 Installation conditions...................................................................................................................................... 34
4.1.1 Ambient conditions .......................................................................................................................................... 34
4.1.2 Device layout and space requirements............................................................................................................ 34
4.1.3 Power supply..................................................................................................................................................... 35
4.1.4 Gas supply ......................................................................................................................................................... 35
4.2 Unpacking and setting up the device............................................................................................................... 35
4.2.1 Installing and commissioning the analyzer..................................................................................................... 36
4.3 Connecting accessories..................................................................................................................................... 39
4.3.1 The AS 10e and AS 21hp autosamplers ......................................................................................................... 39
4.3.2 AS vario autosampler ...................................................................................................................................... 46
4.3.3 EPA Sampler .................................................................................................................................................... 52
4.3.4 External solids module ..................................................................................................................................... 56
5 Operation ........................................................................................................................................................................ 58
5.1 General notes.................................................................................................................................................... 58
5.2 Switching on the analyzer................................................................................................................................ 59
5.3 Switching off the analyzer................................................................................................................................ 60
5.4 Carrying out calibration.................................................................................................................................... 61
5.4.1 Preparing and starting calibration................................................................................................................... 61
5.4.2 Displaying the calibration results..................................................................................................................... 63
5.4.3 Editing calibration ............................................................................................................................................ 64
5.4.4 Linking a calibration to a method.................................................................................................................... 65
5.4.5 Managing calibration data............................................................................................................................... 67
5.5 Performing measurements .............................................................................................................................. 67
5.5.1 Measurement with manual sample feed ........................................................................................................ 67
5.5.2 Measurement with autosampler ..................................................................................................................... 68
6 Maintenance and care.................................................................................................................................................... 70
6.1 Maintenance overview..................................................................................................................................... 70
6.2 Adjustment and setting.................................................................................................................................... 71
6.2.1 General notes for adjusting the autosampler ................................................................................................. 71
6.2.2 Adjusting the AS vario autosampler................................................................................................................ 71
6.2.3 Adjusting the EPA Sampler.............................................................................................................................. 73
6.2.4 Setting the NPOC purge flow ........................................................................................................................... 76
6.3 Syringe pump maintenance ............................................................................................................................. 77
6.4 Replacing the pump hose................................................................................................................................. 78
6.5 Replacing the hose connections ...................................................................................................................... 79
6.6 Checking the system for leaks.......................................................................................................................... 80
6.7 UV reactor maintenance................................................................................................................................... 81
6.7.1 Checking the illumination of the lamp ............................................................................................................ 81
6.7.2 Cleaning the UVreactor.................................................................................................................................... 81
6.8 Cleaning the TIC condensate vessel................................................................................................................. 82
6.9 Replacing the water traps ................................................................................................................................ 83
6.10 Replacing the halogen trap.............................................................................................................................. 86
7 Troubleshooting.............................................................................................................................................................. 88
7.1 Software error messages.................................................................................................................................. 89
7.2 Status errors...................................................................................................................................................... 93

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7.3 Device errors ..................................................................................................................................................... 94
8 Transport and storage .................................................................................................................................................... 97
8.1 Transport........................................................................................................................................................... 97
8.1.1 Preparing the analyzer for transport............................................................................................................... 97
8.1.2 Preparing the AS vario autosampler for transport ......................................................................................... 98
8.1.3 Moving the device in the laboratory................................................................................................................ 99
8.2 Storage .............................................................................................................................................................. 99
9 Disposal ........................................................................................................................................................................... 100
9.1 Disposing of the UV module.............................................................................................................................100
10 Specifications .................................................................................................................................................................. 103
10.1 Technical data...................................................................................................................................................103
10.2 Standards and directives ..................................................................................................................................104
11 Revision Overview........................................................................................................................................................... 106

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multi N/C UVHS, multi N/C pharma UV Basic information
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1 Basic information
1.1 About this user manual
Content The operating manual describes the following device model(s):
¡multi N/C UVHS
¡multiN/CpharmaUV
In this manual, these models are collectively referred to as the multi N/C UVHS. Any dif-
ferences between the models are explained in the relevant section.
The device is intended to be operated by qualified specialist personnel under observance
of the operating manual.
The operating manual provides information about the design and operation of the de-
vice and provides operating personnel with the necessary know-how for safe handling of
the device and its components. Furthermore, the operating manual includes information
on the maintenance and servicing of the device as well as information on potential
causes of malfunctions and their correction.
The multiN/CpharmaUV model is a special model for the pharmaceutical industry. No
solids modules are available for the pharma model.
Conventions Instructions for actions occurring in chronological order are numbered and combined
into action units.
Warnings are indicated by a warning triangle and a signal word. The type, source and
consequences of the hazard are stated together with notes on preventing the hazard.
Elements of the control and analysis program are indicated as follows:
¡Program terms are in bold (e.g., the System menu).
¡Buttons are indicated by square brackets (e.g., [OK]).
¡Menu items are separated by vertical lines (e.g., System | Device).
Symbols and signal words used
in this manual
The user manual uses the following symbols and signal words to indicate hazards or in-
structions. These warnings are always placed before an action.
WARNING
Indicates a potentially hazardous situation which can cause death or very serious (possi-
bly permanent) injury.
CAUTION
Indicates a potentially hazardous situation which can cause slight or minor injuries.
NOTICE
Provides information on potential material or environmental damage.

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1.2 Intended use
The device and its components may only be used for the analyses listed in the user man-
ual. Only this specified use is regarded as the intended use, ensuring the safety of the
user and the device.
The analyzer may only be used to determine the total carbon content and the concen-
tration of organic and inorganic bound carbon in aqueous samples.
The analyzer is particularly suited for detection of the listed parameters in drinking wa-
ter, ground water, surface water, ultrapure water and water for pharmaceutical pur-
poses.
In conjunction with an optional solids module, the total carbon content in solids can be
determined.
No flammable liquids or substances that can form explosive mixtures may be analyzed
with the analyzer. Do not analyze concentrated acids with the analyzer!
The device must only be used with nitrogen or argon as a carrier gas. Oxygen or syn-
thetic air may not be used as carrier gas. The UV radiation would generate ozone from
oxygen.

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2 Security
For your own safety and to ensure error-free and safe operation of the device, please
read this chapter carefully before commissioning.
Observe all safety instructions listed in this user manual and all messages and infor-
mation displayed on the monitor by the control and analysis software.
2.1 Safety labeling on the device
Warning and mandatory action labels have been attached to the device and must al-
ways be observed.
Damaged or missing warning and mandatory action labels can cause incorrect ac-
tions leading to personal injury or material damage. The labels must not be removed.
Damaged warning and mandatory action labels must be replaced immediately!
The following warning and mandatory action labels have been attached to the de-
vice:
Warning symbol Meaning Comment
Warning against corro-
sive substances
On the front side, next to the syringe
pump: Warning against acidic solu-
tions
Warning against harm-
ful or irritating sub-
stances
On the front side, next to the syringe
pump: Warning against acidic and
harmful solutions
Warning against mer-
cury
In the device interior, on the UV reac-
tor: The UVreactor is equipped with a
low-pressure mercury lamp. Observe
this during disposal!
Warning against optical
radiation
On the UV reactor: UV radiation is
damaging to the eyes. Switch off the
analyzer before removing the UV mod-
ule.
Warning against hot
surface
On the UV reactor: Risk of burns from
the hot UV reactor. Allow the analyzer
to cool before removing the UV mod-
ule.
Warning against crush-
ing
On the autosampler: There is a risk of
injury in the movement range of the
autosampler.
Hazardous substances are used during operation:
GHS labeling Meaning Comment
Corrosivity warning ¡On the phosphoric acid bottle:
¡On the sodium persulfate bottle:
Phosphoric acid and the sulfuric
acid contained in the sodium per-
sulfate solution are corrosive.

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GHS labeling Meaning Comment
Hazardous substances
warning
On the sodium persulfate bottle:
Sodium persulfate is a strong oxidizing
agent.
It is hazardous to health when in-
gested and causes irritation of the
skin, eyes and respiratory pathways.
Contact can cause allergic reactions,
respiratory problems or asthma-like
symptoms.
Health hazard
Warning against fire-
promoting substances
Mandatory action
labels/information
symbols
Meaning Comment
Disconnect the power
supply before opening
the device cover.
On the side parts and the rear of the
device: Before opening the device
cover, switch off the device and dis-
connect the mains plug from the
mains socket.
Observe the operating
manual
On the side parts and the rear of the
device: Before starting work, read the
user manual.
For People's Republic of
China only
The device contains controlled sub-
stances. Analytik Jena GmbH warrants
that these substances will not be re-
leased from the device within the next
25years provided the device is used as
intended.
2.2 Requirements for the operating personnel
The device must only be operated by qualified specialist personnel instructed in the
use of the device. This instruction also include teaching the contents of this user
manual and of the user manuals of the connected system components. We recom-
mend training by qualified employees of Analytik Jena or its representatives.
In addition to the safety instructions in this user manual, the general applicable
safety and accident prevention regulations of the respective country the device is op-
erated in must be observed and adhered to. The operator must ensure the latest ver-
sion of these regulations.
The user manual must be accessible to the operating and service personnel.
2.3 Safety instructions, transport and commissioning
Incorrect installation can create serious hazards. This may result in electric shock and
explosion if the gases are not connected correctly.
¡Only the Analytik Jena GmbH customer service or specialist personnel trained
and authorized by them is allowed to install and commission the device and its
system components.
¡Unauthorized assembly and installation is not permitted.

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Insufficiently secured components pose a risk of injury.
¡During transport, secure the device components as specified in these operating
instructions.
¡Loose parts must be removed from the system components and packed sepa-
rately.
To prevent health damage, the following must be observed when moving the device
in the laboratory (lifting and carrying):
¡For safety reasons, two persons are required to transport the device who must
hold the unit by either side of the equipment.
¡The device does not have any carrying handles. Therefore the device must be
gripped firmly with both hands at the lower end.
¡Risk of damage to health due to improper decontamination! Perform a profes-
sional and documented decontamination of the device before returning it to An-
alytik Jena. The decontamination report is available from Service when register-
ing the return. Service must refuse acceptance of contaminated devices. The
sender may be liable for damage caused by inadequate decontamination of the
device.
2.4 Safety instructions: during operation
2.4.1 Summary of safety instructions
The operator must make sure that the device and its safety equipment is in sound
condition each time before starting up the device. This applies in particular after
each modification or extension of the device or its repair.
Observe the following:
¡The device may only be operated if all items of protective equipment (e.g. covers
in front of electronic components) are in place, properly installed and fully oper-
ational.
¡The sound condition of the protection and safety equipment must be checked
regularly. Any defects must be corrected as soon as they occur.
¡Protective and safety equipment must never be removed, modified or switched
off during operation.
¡Always ensure free access to the main switch and to the emergency shutdown
switches and locks during operation.
¡The ventilation equipment on the device must be in good working condition.
Covered ventilation grilles or slots etc. may cause the device to break down or
may cause damage to it.
¡Modifications, conversions and extensions to the device are only permitted after
consultation with Analytik Jena. Unauthorized modifications can jeopardize the
device’s operational safety and may lead to limitations regarding the warranty
and access to customer service.
¡Keep all combustible materials away from the device.
¡Caution when handling glass components. Risk of broken glass and therefore risk
of injury!
¡Ensure that no liquid enters the interior of the device, for example at cable con-
nections. There is a danger of electric shock.
¡There is a risk of injury in the movement range of the autosampler. For example,
hands or fingers may be crushed. Maintain a safety distance from the autosam-
pler during operation.

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2.4.2 Safety instructions – protection against explosion and fire
The device may not be operated in an explosive environment.
Smoking or handling open flames are prohibited in the room in which the device is
operated!
2.4.3 Electrical system safety instructions
Life-threatening electrical voltages occur in the device in the area of the right side
component! Contact with live components may cause death, serious injury or painful
electrical shock.
¡The power plug must be connected to a proper power outlet to ensure that the
device meets protection class I (ground connector). The device may only be con-
nected to power sources whose nominal voltage is the same as that on the rating
plate of the equipment. Do not replace the removable power cable of the device
with a power cable that does not meet the specifications (with no protective
ground conductor). Extensions of the supply cable are not permitted!
¡Work on the electronics may only be carried out by the customer service of Ana-
lytik Jena and specially authorized technicians.
¡The electrical components must be checked regularly by a qualified electrician.
Any defects such as loose connections or faulty or damaged cables must be re-
paired without delay.
¡Before opening the device, the device must be switched off via the main switch
and the power plug must be disconnected from the power outlet!
¡The basic module and the system components may only be connected to the
mains when they are switched off.
¡Electrical connection cables between the basic module and the system compo-
nents may only be connected or disconnected when the device is switched off.
¡Switch off the analyzer immediately using the main switch on the rear of the
housing if there is any malfunction of the electrical components. Disconnect the
power plug from the power socket.
2.4.4 Safety instructions for the operation of compressed gas containers and compressed gas
systems
¡The operating gases are taken from compressed gas containers or local com-
pressed gas systems. The operating gases must have the required purity.
¡Work on compressed gas containers and systems may only be carried out by indi-
viduals with specialist knowledge and experience in compressed gas systems.
¡Compressed air hoses and pressure reducers may only be used for the assigned
gases.
¡Pipes, hoses, screw connections and pressure reducers for oxygen must be kept
free from grease.
¡Check all pipes, hoses and screw connections regularly for leaks and externally
visible damage. Repair leaks and damage without delay.
¡Shut off the gas supply to the device prior to any maintenance and repair work
on the compressed gas containers.
¡After successful repair and maintenance of the components of the compressed
gas containers or system, the device must be checked for proper operation prior
to recommissioning.
¡Unauthorized assembly and installation are not permitted!

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2.4.5 Safety notes on UV radiation
¡Protection of the user against UVC radiation is ensured by the protective glass
before the UV reactor. The protective glass must not be removed during opera-
tion.
¡Manipulation of the protective glass is not permitted!
¡Avoid looking through the protective glass for too long to protect your eyes.
¡Do not use oxygen or synthetic air as a carrier gas. The UVC radiation of the UV
reactor will decompose oxygen molecules to oxygen radicals. Reaction with other
oxygen molecules would generate ozone. Ozone, the toxic gas, causes damage to
mucous membranes.
2.4.6 Handling of auxiliary and operating materials
The operator is responsible for the selection of substances used in the process as well
as for their safe handling. This is particularly important for radioactive, infectious,
poisonous, corrosive, combustible, explosive and otherwise dangerous substances.
When handling hazardous substances, the locally applicable safety instructions and
instructions in the safety data sheets from the manufacturers of the auxiliary and op-
erating materials must be complied with.
¡Exercise particular caution when handling concentrated acids and the toxic
strong oxidant sodium persulfate. Always observe the regulations and informa-
tion in the safety data sheets for the handling of orthophosphoric acid (H3PO4),
sulfuric acid (H2SO4) and sodium persulfate (Na2S2O8)!
Observe the following:
¡The operator is responsible for carrying out suitable decontamination should the
device become contaminated externally or internally with dangerous substances.
¡Splashes, drops or larger liquid spillages should be removed using an absorbent
material such as cotton wool, laboratory wipes or cellulose.
¡For biological contamination, wipe the affected area with a suitable disinfectant,
such as an Incidin Plus solution. Then wipe the cleaned areas so that they are
dry.
¡The only suitable cleaning method for the housing is wipe disinfection. If the dis-
infectant has a spray nozzle, apply disinfectant to a suitable cloth before using it
on the device.
Particular care must be taken if infectious materials are analyzed with the device,
as the device cannot be decontaminated as a single unit.
¡Before using a cleaning or decontamination procedure other than that pre-
scribed by the manufacturer, the user is required to check with the manufacturer
that the intended procedure will not damage the device. Safety labels attached
to the device must not have methanol applied.
2.4.7 Safety instructions – maintenance and repair
The device is generally maintained by the customer service department of Analytik
Jena or specialist personnel trained and authorized by them.
Unauthorized maintenance can damage the device. For this reason, only the activi-
ties described in the user manual in the "Maintenance and care" chapter may be per-
formed by the operator.
¡Only clean the exterior of the device with a slightly moistened, non-dripping
cloth. Use only water and, if required, customary surfactants.
¡All maintenance and repair work on the device must only be carried out when
the device is switched off (unless specified otherwise).

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¡The gas supply must be shut off before performing any maintenance or repair
work (unless specified otherwise).
¡Use only original spare parts, wear parts and consumables. They have been
tested and ensure safe operation. Glass part are wear parts and are not subject
to the warranty.
¡All protective equipment must be reinstalled and checked for proper function
when the maintenance or repair work is complete.
See also
2Maintenance and care [}70]
2.5 Behavior during emergencies
¡If there is no immediate risk of injury, switch off the device and the connected
system components immediately in hazardous situations or in the event of an
accident and/or disconnect the power plugs from the power outlets.
¡Close the gas supply as soon as possible after switching off the devices.

multi N/C UVHS, multi N/C pharma UV Function and design
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3 Function and design
3.1 Layout
The analyzer is a compact laboratory device with permanently installed main compo-
nents. Further accessories and reagents are required for the measurement process.
The control of the analyzer and the analysis of the measurement data is performed via
the multiWin software installed on an external PC.
All components of the analyzer operated or serviced by the user can be reached via the
two doors on the front.
The analyzer consists of the following main components:
¡Sample supply system
¡Gas box and hose system
¡UV reactor with control gear
¡Measuring gas drying and cleaning
¡Detector
¡Indicator and control elements, connections
¡Electronics
¡Accessories
Figure1 Analyzer with open front
1 Water traps 2 Cooling block
3 Syringe pump with 9-port valve 4 Reagent bottle for Na2S2O8
5 Drip trays 6 Reagent bottle for H3PO4
7 TIC condensate container 8 Halogen trap
9 Needle valves to adjust the gas flow 10 Condensate pump

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3.1.1 Sample supply system
Sample supply is carried out as flow injection via a syringe pump with 9-port valve. The
injection volume is 50to20000µl.
For small sample volumes (V<1.5ml), system water is additionally added to the reactor
with each dosage.
The hose connections are attached to the 9-port valve using Fingertight screw connec-
tions. The syringe body is made of glass and replaceable.
Figure2 Syringe pump
1 Fingertight connection 2 9-port valve
3 Dosing syringe
The hoses on the 9-port valve are labeled and connected to the following components:
Hose Connection to the component/accessory
1 TIC condensate container
2 Reagent bottle for phosphoric acid H3PO4
3 Reagent bottle for sodium persulfate Na2S2O8
4 Waste disposal
5 Ultrapure water bottle
6 Sample
7 UV reactor
8 Waste disposal
9 Not used

multi N/C UVHS, multi N/C pharma UV Function and design
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3.1.2 Hose system
Hose diagram The connection between the individual components is made with labeled hoses. The
numbers and letters circled in the hose diagram correspond to the labels on the hoses in
the analyzer.
Waste
Condensate pump
"pump"
connection
"analyte" connection
"internal" connection
Flow monitoring
Halogen trap
Water traps
TIC reactor
Syringe pump
Ultrapure water
UV reactor
Gas box
Sample
purge
needle valve
NPOC
needle valve
NDIR
Water
traps
18
16
15
31
30
29
14
13
12
11
20
17
19 48
7
1
5
3
2
AB
6
10
22
21
23
Figure3 Hose diagram
Connection method Inside the device, most gas connections have been implemented via FAST connectors
(FAST – Fast, Safe, Tight). These connectors provide a tight transition between the
hoses and connections with different diameters. The soft sleeves prevent the risk of
glass breakage in comparison to rigid screw connections. There are different connector
versions.
Figure4 FAST connector
So-called Fingertight screw connections are also used. These flangeless fittings consist
of a conical nipple and a banjo bolt. These hose connections seal purely by tightening
the plastic banjo bolt finger-tight.

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123
Figure5 Fingertight screw connection
1 Hose 2 Banjo bolt
3 Conical nipple
Components for flow adjust-
ment
The analyzer automatically sets the carrier gas flow and controls the inlet flow via an
MFC (Mass Flow Controller). An MFM (Mass Flow Meter) measures the carrier gas flow
at the device outlet. This automatically checks for leaks. The results are displayed in the
multiWin software in the System state window. A water trap protects the gas box from
the return of wet combustion gases.
The NPOC purge flow and the purge flow for reagents can be set via the needle valve on
the front side. The NPOC purge flow is measured with an MFM and displayed in the Sys-
tem state window.
Figure6 Setting the NPOC purge flow and reagents purge flow
1 Needle valve for setting the reagents
purge flow (purge)
2 Needle valve for setting the NPOC purge
flow (NPOC)
Condensate pump The condensate pump pumps the condensate or the waste solution from TIC determina-
tion out automatically after each measurement. The condensate pump is located behind
the front doors next to the halogen trap.
Figure7 Condensate pump

multi N/C UVHS, multi N/C pharma UV Function and design
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3.1.3 UV reactor with control gear
The analyzer features a specially developed UV reactor with an integrated UV radiation
source made of quartz glass. The reactor directly surrounds the UV radiation source.
Wavelengths 185nm; 254nm are used to oxidize samples. Thanks to its high radiation
density, the UV radiation source digests the samples very well.
The UV reactor has two inlets and one outlet. The syringe pump feeds the sample and
the reagent into the reactor via one inlet. The second inlet feeds in the carrier gas. The
hose system transports the measuring gas further to the TIC condensate container via
the top outlet.
Figure8 UV reactor with control gear (right-hand side wall open)
3.1.4 Measuring gas drying and cleaning
TIC condensation module The TIC condensation module consists of a TIC condensate container and a cooling
block. The TIC reactor and the gas/liquid separator are combined in the TIC condensate
container. The cooling block dries the measuring gas at the same time.
The TIC condensation module is located on the front side. The TIC condensate container
has four connections. The right side connection connects the TIC condensate container
with the UV reactor. The wet measuring gas/carrier gas mix is supplied via the connec-
tion. The gas is routed downward in the condensation module and exits via a glass drip.
The integrated glass drip ensures the effective purging of the generated CO2.
The cooling block dries the measuring gas by freezing out the water vapor. A Peltier ele-
ment provides cooling. The dry measuring gas is routed out of the TIC condensate con-
tainer via the top left connection. The measuring gas drying is maintenance-free.
The syringe pump routes the sample and reagents into the TIC condensate container be-
fore each measurement via the bottom connection and hose 1. The fourth connection is
connected to the condensate pump. The condensate pump removes the waste from the
TIC condensate container.

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Figure9 TIC condensation module
1 TIC condensate container 2 Cooling block
Water traps The water traps remove interfering components from the measuring gas and protect the
detector and the gas box. The water traps are mounted in the gas path behind the cool-
ing block or behind the gas box. The water traps each consist of a larger and a smaller
water trap. The larger water trap (TC prefilter) retains aerosols during operation. The
smaller water trap (disposable retention filter) retains rising water.
Figure10Water traps
1 Disposable retention filter 2 TC prefilter