Thermo Scientific TVA2020 User manual

TVA2020
Instruction Manual
Toxic Vapor Analyzer
Part Number 111755-00
29Jul2014

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Thermo Fisher Scientific TVA2020 Instruction Manual i
About This Manual
This manual provides information about installing, maintaining, and
servicing the TVA2020 Toxic Vapor Analyzer (TVA). It also contains
important alerts to ensure safe operation and prevent equipment damage.
The manual is organized into the following chapters and appendices to
provide direct access to specific operation and service information.
●Chapter 1 “Introduction” provides an overview of the product,
describes the theory of operations, and product specifications.
●Chapter 2 “Hardware and Startup” describes the setup and different
instrument configurations, and provides a quick start procedure.
●Chapter 3 “Display Menus” describes the functions of the instrument
keypad, and the enhanced probe display.
●Chapter 4 “Calibration” describes the calibration process and provides
procedures for calibrating the instrument.
●Chapter 5 “Preventive Maintenance” provides maintenance procedures
to ensure reliable and consistent instrument operation.
●Chapter 6 “Troubleshooting” provides guidelines for diagnosing
analyzer problems, isolating faults, and includes recommended actions
for restoring proper operation.
●Chapter 7 “Servicing” provides guidelines for diagnosing analyzer
problems, isolating faults, and includes recommended actions for
restoring proper operation.
●Chapter 8 “Optional Accessories” describes the optional equipment
that can be used with this analyzer.
●Appendix A “Warranty” is a copy of the warranty statement.
●Appendix B “Text Data Formats” is a description of the files available
for download from the instrument.
●Appendix C “Response Factors” describes response factors for
monitoring different compounds and provides a list of the various
gases.

About This Manual
Safety
ii TVA2020 Instruction Manual Thermo Fisher Scientific
Review the following information carefully before using the instrument.
This manual provides specific information on how to operate the
instrument, however if used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
This manual contains important information to alert you to potential safety
hazards and risks of equipment damage. Refer to the following types of
alerts you may see in this manual.
Safety and Equipment Damage Alert Descriptions
Alert Description
DANGER A hazard is present that will result in death or serious
personal injury if the warning is ignored. ▲
WARNING A hazard is present or an unsafe practice can result in
serious personal injury if the warning is ignored. ▲
CAUTION The hazard or unsafe practice could result in minor to
moderate personal injury if the warning is ignored. ▲
Equipment Damage The hazard or unsafe practice could result in property
damage if the warning is ignored. ▲
Safety and Equipment Damage Alerts in this Manual
Alert Description
WARNING Do not replace battery in an area classified as hazardous
due to presence of flammable gases or vapors. ▲
Do not operate battery charger in an area classified as
hazardous due to presence of flammable gases or vapors.
▲
Misusing or mishandling the battery packs can lead to
fluid leakage, heat generation, fire or an explosion. ▲
Charger and USB connections are not allowed in an area
classified as hazardous due to presence of flammable
gases or vapors. ▲
To prevent a potential explosion, do not operate the
instrument with the PID compartment open or FID
detector cap removed. ▲
Power down the instrument before performing any
service procedures. ▲
Safety
Safety and Equipment
Damage Alerts

About This Manual
Safety and Equipment Damage Alerts
Thermo Fisher Scientific TVA2020 Instruction Manual iii
Alert Description
Never change an electrical component in an area
classified as hazardous due to presence of flammable
gases or vapors. ▲
Parts replacement and maintenance should not be
performed in areas classified as hazardous due to
presence of flammable gases or vapors. Use only Thermo
Fisher Scientific replacement parts. (Extended Service
Plans are available; contact Thermo Fisher Scientific for
further information.) ▲
A safe refill operation means there are no hydrogen
leaks. Before any valves are opened, use a wrench to
firmly tighten connections to the hydrogen supply tanks
and the tank fill adapter. If escaping hydrogen is heard
during the filling operation, close all valves and correct
the leak before proceeding. Leak test with soapy water or
equivalent. ▲
Remove the hydrogen tank from the instrument before
servicing. ▲
All maintenance procedures must be performed on a
clean surface using clean tools. Avoid touching the
lamp's window as well as the metalized portion of the
cell assembly with your bare fingers. Fingerprints left on
these parts may adversely affect the sensors operation.
Latex gloves are preferred, but if they are not used, your
hands must be clean and free of oils, lotions, etc. It is
acceptable to hold the lamp by its glass body or by the
edges of the window. ▲
CAUTION If you use multipoint calibration or a gas other than
methane or isobutylene and then apply response
factors/curves (that have been generated with reference
to a single point methane/isobutylene calibration), the
resulting measurements will probably be incorrect. ▲
Do not fill hydrogen tank to a pressure greater than 15.2
MPa (2200 psig). ▲
Observe all hydrogen handling procedures listed below.
▲
Do not allow any contact with the igniter coil during
cleaning. ▲
Equipment Damage Do not operate the TVA2020 if its case is damaged or
otherwise compromised. ▲

About This Manual
WEEE Symbol
iv TVA2020 Instruction Manual Thermo Fisher Scientific
The following symbol and description identify the WEEE marking used on
the instrument and in the associated documentation.
Symbol Description
Marking of electrical and electronic equipment which applies to electrical and
electronic equipment falling under the Directive 2002/96/EC (WEEE) and the
equipment that has been put on the market after 13 August 2005. ▲
Service is available from exclusive distributors worldwide. Contact one of
the phone numbers below for product support and technical information
or visit us on the web at www.thermoscientific.com/aqi.
1-866-282-0430 Toll Free
1-508-520-0430 International
We continue to support our customers with advanced online resources.
Our Air Quality Instruments Online Library allows our customer’s access
to product documents and information on a constant basis.
Available 24-hours a day and seven-days a week, the online library provides
quick access to information regardless of time zone or office hours.
To register for an account or log in, please visit
www.thermoscientific.com/aqilibrary.
W
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W
here to Get Help

Thermo Fisher Scientific TVA2020 Instruction Manual v
Contents
Introduction........................................................................................................ 1-1
Flame Ionization Detection (FID)....................................................... 1-2
Benefits of Flame Ionization Detection ............................................ 1-3
Photoionization Detection .................................................................. 1-4
Benefits of Photoionization Detection.............................................. 1-5
Dual Detectors.................................................................................... 1-6
Benefits of Dual Detectors ............................................................... 1-7
Concentration Calculation and Calibration......................................... 1-8
Standard Specifications ....................................................................... 1-9
External Influences............................................................................ 1-11
Product Safety Specifications............................................................. 1-12
Hardware and Startup...................................................................................... 2-1
Overview............................................................................................. 2-1
Instrument Functions.......................................................................... 2-3
Using the Instrument .......................................................................... 2-4
Startup ................................................................................................ 2-4
Instrument Connections ..................................................................... 2-4
Instrument Sidepack Display............................................................... 2-6
Instrument Sidepack Keypad............................................................... 2-7
Control Menu..................................................................................... 2-9
Quick Start Procedure....................................................................... 2-10
Display Menus................................................................................................... 3-1
Main Menu Structure ......................................................................... 3-1
Run Mode........................................................................................... 3-4
Accessing the Run Menu.................................................................. 3-5
Run: Log None ............................................................................. 3-5
Run: Log Auto .............................................................................. 3-5
Run: Log VOC ............................................................................. 3-6
Run: Log F.E. ............................................................................... 3-8
Setup Menu ........................................................................................ 3-9
Calibration Settings............................................................................. 3-9
Alarm Levels...................................................................................... 3-10
Accessing the Alarm Menu............................................................. 3-12
STEL Level Alarm....................................................................... 3-12
Low Ceiling Alarm...................................................................... 3-13
High Ceiling Alarm..................................................................... 3-14
Log Methods..................................................................................... 3-15
Chapter 1
Chapter 2
Chapter 3

Contents
vi TVA2020 Instruction Manual Thermo Fisher Scientific
Accessing the LOG Menu .............................................................. 3-16
Log None.................................................................................... 3-16
Log Auto..................................................................................... 3-17
Log VOC.................................................................................... 3-18
Log F.E. ...................................................................................... 3-19
Log Custom ................................................................................ 3-21
Passcode Protection........................................................................... 3-23
New Passcode................................................................................. 3-23
Enable............................................................................................ 3-23
Disable........................................................................................... 3-24
Other Settings................................................................................... 3-24
User Identification Number ........................................................... 3-24
Date............................................................................................... 3-25
Time of Day................................................................................... 3-26
User Options.................................................................................. 3-27
Key Click .................................................................................... 3-28
Display Delay.............................................................................. 3-28
Information Menu ............................................................................ 3-29
Memory ............................................................................................ 3-30
Calibration ..........................................................................................................4-1
Calibration Scenarios .......................................................................... 4-1
Scenario 1 ........................................................................................ 4-1
Scenario 2 ........................................................................................ 4-1
Scenario 3 ........................................................................................ 4-2
Calibration Configuration................................................................... 4-3
Number Span Pt .............................................................................. 4-4
Defining the Span Gas Concentration(s).......................................... 4-4
Background Correct......................................................................... 4-6
Defining the Background Correction ............................................ 4-7
RF Calc Mode.................................................................................. 4-8
Cal Accept Mode ............................................................................. 4-8
Cal Save Mode ................................................................................. 4-9
Detector Counts.................................................................................. 4-9
Defining the Response Factor ........................................................... 4-10
Response Factor Multiplier ............................................................ 4-11
Response Curve.............................................................................. 4-11
Zero Reference Point Calibration................................................... 4-14
Span Reference Point(s) ................................................................. 4-16
Flow Calibration ............................................................................... 4-18
Preventive Maintenance .................................................................................5-1
Safety Precautions ............................................................................... 5-2
Replacement Parts............................................................................... 5-2
Battery and Battery Charger................................................................ 5-2
Chapter 4
Chapter 5

Contents
Thermo Fisher Scientific TVA2020 Instruction Manual vii
Battery Warnings and Precautions.................................................... 5-2
Safety Test Criteria........................................................................... 5-4
Hydrogen Gas Tank............................................................................ 5-4
Precautions in Handling and Storage ............................................... 5-5
Fuel Refilling Procedure................................................................... 5-6
Cleaning an FID Cartridge ................................................................. 5-7
Cleaning the FID Detector Cap.......................................................... 5-9
Cleaning the FID Detector Cavities .................................................. 5-10
Replacing Water Trap Probe Filter and O-Rings............................... 5-11
Replacing the O-Rings ................................................................... 5-12
Cleaning or Replacing a Sintered Metal Filter Cup ........................... 5-13
Replacing the Charcoal Filter ............................................................ 5-14
Troubleshooting ................................................................................................ 6-1
Troubleshooting Guide....................................................................... 6-2
Warning Messages............................................................................... 6-6
Service Locations................................................................................. 6-7
Servicing............................................................................................................. 7-1
Replacement Parts List ........................................................................ 7-2
Opening the Instrument ..................................................................... 7-5
Replacing the Battery .......................................................................... 7-6
Hydrogen Gas Tank............................................................................ 7-6
Precautions in Handling and Storage ............................................... 7-7
Fuel Refilling Procedure................................................................... 7-7
Cleaning the PID Lamp...................................................................... 7-9
Replacing the FID End Cap.............................................................. 7-14
Flow Tests......................................................................................... 7-14
Leak Check ....................................................................................... 7-16
Flow Check....................................................................................... 7-17
Flow Calibration ............................................................................... 7-17
Servicing the Pump ........................................................................... 7-19
Removing the Pump Assembly....................................................... 7-19
Accessing the Orifice...................................................................... 7-20
Replacing the Pump....................................................................... 7-21
Replacing the Pump Valve ............................................................. 7-21
Replacing the Sample Line in Enhanced Probe ................................. 7-23
Replacing Sample Line in Sample Probe ........................................... 7-25
Replacing the Connector Access Door............................................... 7-26
Replacing the Internal Battery Charger Connector Cable.................. 7-27
Replacing the Internal Probe Connector Cable ................................. 7-28
Optional Accessories....................................................................................... 8-1
Sample Probe Option.......................................................................... 8-1
Enhanced Probe Option...................................................................... 8-2
Chapter 6
Chapter 7
Chapter 8

Contents
viii TVA2020 Instruction Manual Thermo Fisher Scientific
Enhanced Probe Display .................................................................. 8-3
Enhanced Probe Keys.................................................................... 8-4
The Enhanced Probe and the RUN Mode ....................................... 8-4
Auto Logging with the Enhanced Probe........................................... 8-5
VOC Logging with the Enhanced Probe.......................................... 8-6
FE Logging with the Enhanced Probe .............................................. 8-7
Route Entry Response Factor ........................................................ 8-7
Navigating the Route File ............................................................. 8-8
Logging Data ................................................................................ 8-8
Repair Menus................................................................................ 8-9
Additional Component Information .............................................. 8-10
Telescoping Extension Option .......................................................... 8-11
Activated Charcoal Filter Adapter ..................................................... 8-12
Bluetooth Communications .............................................................. 8-13
Bluetooth Commands.................................................................... 8-13
Digital Data Logging (Bluetooth) .................................................. 8-15
GPS .................................................................................................. 8-16
Warranty.............................................................................................................A-1
Text Data Formats ............................................................................................B-1
Route Database ...................................................................................B-2
Route List ...........................................................................................B-6
Configuration .....................................................................................B-8
Calibration........................................................................................B-11
Factory..............................................................................................B-13
Calibration History ...........................................................................B-15
Logged Data......................................................................................B-17
Response Factors ............................................................................................. C-1
Appendix A
Appendix B
Appendix C

Thermo Fisher Scientific TVA2020 Instruction Manual ix
Figures
Figure 1–1. Typical Flame Ionization Detector................................................... 1-3
Figure 1–2. Typical Photoionization Detector .................................................... 1-5
Figure 1–3. TVA2020 Dual Detector Configuration ........................................... 1-7
Figure 1–4. Interconnection Control Drawing .................................................. 1-12
Figure 2–1. Instrument Sidepack Display........................................................... 2-2
Figure 2–2. TVA2020 Instrument Connections................................................... 2-5
Figure 2–3. Keypad ............................................................................................. 2-7
Figure 3–1. TVA2020 Menu Structure................................................................ 3-3
Figure 5–1. Replacing the FID Cartridge ............................................................ 5-7
Figure 5–2. Removing the FID Cartridge ............................................................ 5-8
Figure 5–3. Cleaning the FID Detector Cap........................................................ 5-9
Figure 5–4. Water Trap Probe Assembly – Filter and O-Ring Replacing ........ 5-11
Figure 5–5. Water Trap Probe Assembly – Filter and O-Ring Replacing ........ 5-12
Figure 5–6. Sintered Metal Filter – Cleaning or Replacing ............................. 5-13
Figure 5–7. Activated Charcoal Filter Adapter................................................. 5-14
Figure 7–1. TVA2020 Component Layout........................................................... 7-4
Figure 7–2. Hardware ......................................................................................... 7-5
Figure 7–3. Removing the PID Sensor................................................................ 7-9
Figure 7–4. Removing the Filter Cap ................................................................ 7-10
Figure 7–5. Removing the Filter Media............................................................ 7-10
Figure 7–6. Removing the Spacer .................................................................... 7-10
Figure 7–7. Removing the Cell Assembly......................................................... 7-11
Figure 7–8. Removing the PID Lamp ................................................................ 7-11
Figure 7–9. Cleaning the PID Lamp .................................................................. 7-11
Figure 7–10. Installing the Lamp into the Sensor ............................................ 7-12
Figure 7–11. Pressing Down the PID Lamp ...................................................... 7-12
Figure 7–12. Installing the Cell Assembly........................................................ 7-12
Figure 7–13. Placing the Spacer....................................................................... 7-13
Figure 7–14. Placing the Filter Media .............................................................. 7-13
Figure 7–15. Aligning the Cap Key................................................................... 7-13
Figure 7–16. Sample Flow Troubleshooting Flowchart ................................... 7-15
Figure 7–17. Removing the Pump..................................................................... 7-19
Figure 7–18. Replacing the Pump..................................................................... 7-20
Figure 7–19. Exploded View of Pump Head ..................................................... 7-22
Figure 7–20. Replacing Sample Line in Enhanced Probe................................. 7-24

Figures
xTVA2020 Instruction Manual Thermo Fisher Scientific
Figure 7–21. Replacing the Sample Line in Simple Probe ...............................7-25
Figure 7–22. Replacing the Connector Access Door ........................................7-26
Figure 7–23. Replacing the Internal Battery Charger Connector Cable........... 7-27
Figure 7–24. Replacing the Internal Probe Connector Cable ...........................7-28
Figure 8–1. Sample Probe Option .......................................................................8-1
Figure 8–2. Enhanced Probe Option....................................................................8-2
Figure 8–3. Enhanced Probe Option Display ......................................................8-3
Figure 8–4. Telescoping Extension Option .......................................................8-11

Thermo Fisher Scientific TVA2020 Instruction Manual xi
Tables
Table 1–1. TVA2020 Product Specifications ...................................................... 1-9
Table 1–2. TVA2020 External Influences ......................................................... 1-11
Table 1–3. TVA2020 Product Safety Specifications ........................................ 1-12
Table 2–1. Keys and Functions ........................................................................... 2-8
Table 3–1. Main Menu Selection and Functions ............................................... 3-2
Table 3–2. Alarm Configurations...................................................................... 3-11
Table 3–3. Available Log Data Types............................................................... 3-15
Table 4–1. Gas Concentration Units................................................................... 4-6
Table 4–2. Detector Counts .............................................................................. 4-10
Table 6–1. Troubleshooting ................................................................................ 6-2
Table 6–2. Warning Messages........................................................................... 6-6
Table 7–1. TVA2020 Replacement Parts............................................................ 7-2
Table 8–1. Enhanced Probe Keys and Functions................................................ 8-4
Table 8–2. Enhanced Probe Menu...................................................................... 8-5
Table 8–3. Bluetooth Commands ..................................................................... 8-13

Tables
xii TVA2020 Instruction Manual Thermo Fisher Scientific

Thermo Fisher Scientific TVA2020 Instruction Manual 1-1
Chapter 1
Introduction
The Thermo Scientific™ TVA2020 Toxic Vapor Analyzer, is an advanced-
design, portable, organic/inorganic vapor monitor for the gas survey
industry. The analyzer uses either a flame ionization detector (FID), or
both an FID and a photoionization detector (PID).
For details of the instrument’s theory of operation and product
specifications, see the following topics:
●“Flame Ionization Detection (FID)” on page 1-2
●“Photoionization Detection” on page 1-4
●“Dual Detectors” on page 1-6
●“Concentration Calculation and Calibration” on page 1-8
●“Standard Specifications” on page 1-9
●“External Influences” on page 1-11
●“Product Safety Specifications” on page 1-12
Thermo Fisher Scientific is pleased to supply this portable survey
instrument. We are committed to the manufacture of instruments
exhibiting high standards of quality, performance, and workmanship.
Service personnel are available for assistance with any questions or
problems that may arise in the use of this instrument. For more
information on servicing, see Chapter 7, “Servicing”.

Introduction
Flame Ionization Detection (FID)
1-2 TVA2020 Instruction Manual Thermo Fisher Scientific
A Flame Ionization Detector (FID) measures organic compounds by
utilizing a flame produced by the combustion of hydrogen and air (see
Figure 1–1). When hydrocarbons in the sample are introduced to the
detection zone, ions are produced by the following reaction:
RH + O RHO++ e–H2O + CO2
where:
R = carbon compound
A collector electrode with a polarizing voltage is also located within the
detector chamber, and the ions produced by this reaction are attracted to it.
As the ions migrate towards the collector, a current is produced which is
directly proportional to the concentration of hydrocarbons introduced to
the flame. This current is then amplified and sent to a microprocessor.
The FID has a wide dynamic range. The effective dynamic range can be
further expanded by use of a dilutor kit which reduces very high volatile
organic compound (VOC) concentrations to within the dynamic range (or
even linear range) of the analyzer. The dilutor kit can also be used to enrich
oxygen deficient samples by adding ambient air that is rich in oxygen
(20.9% usually). Low oxygen can affect the characteristics of the hydrogen
flame, causing readings to be artificially elevated and possibly extinguishing
the flame. As a general rule of thumb, greater than 16% oxygen is required
to support the flame. If underground gases or samples in gas bags are to be
measured by an FID, it is advised that a dilutor be used to combat the
problem.
Flame Ionization
Detection (FID)

Introduction
Flame Ionization Detection (FID)
Thermo Fisher Scientific TVA2020 Instruction Manual 1-3
COLLECTOR
ELECTRODE
METER
IGNITION
FILAMENT
EXHAUST
AIR SAMPLE
JET
FUEL (H2)
Figure 1–1. Typical Flame Ionization Detector
Benefits of Flame Ionization Detection include:
●Wide dynamic and linear range
●High sensitivity to hydrocarbon vapors (including methane)
●Very stable and repeatable response
●Virtually unaffected by ambient levels of CO, CO2, and water vapor
Benefits of Flame
Ionization Detection

Introduction
Photoionization Detection
1-4 TVA2020 Instruction Manual Thermo Fisher Scientific
A Photoionization Detector (PID) consists of an ultraviolet (UV) lamp of a
specific energy and an ionization chamber (see Figure 1–2). Compounds
passing through the chamber are excited by photons of UV energy and
ionized according to the following equation:
R + hR+ + e–
where:
R = most organic/inorganic compounds
These ions are attracted to a collecting electrode, producing a current
proportional to the concentration of the compound.
Whether or not a compound can be detected by a PID depends upon the
energy required to remove an electron from the compound (its ionization
potential). If the lamp energy is greater than the compound’s ionization
potential, the PID will detect it. The lamp in the TVA2020 is 10.6 eV.
Because of its smaller dynamic range (0-2000 ppm), the PID is not the
detector of choice for measuring high concentrations of vapors. A PID is
also more susceptible to interference from water vapor than a FID.
However, as a PID does not require hydrogen or oxygen, it is the detector
of choice when fuel is limited or unavailable, or when ambient oxygen
concentrations are low. The PID is also very sensitive to aromatic and
chlorinated compounds, and can even measure some inorganic compounds
that the FID does not detect at all (ammonia, carbon disulfide, carbon
tetrachloride, chloroform, ethylamine, formaldehyde, and hydrogen sulfide,
to name a few).
Photoionization
Detection