Page 1
Warning: Limitation of Liability
The ultimate responsibility of the cons equences of use of toxic
compounds rests with the user. PerkinElmer’s role is as a supplier of
instrumentation to assist in the early detection of hazardous
condi tions involving such compounds.
2020 represents a major advance in this field and, as with all
complex instruments, it is vitally important to ensure that 2020 is
maintained in accordance with PerkinElmer’s instructions and that
proper calibration is regularly performed.
As with any complex device, 2020 is subject to failure and, while
PerkinElmer has taken, and continues to take, all possible
precautions to (a) reduce the possibility of failure, and (b) warn the
user in the event of failure, circumstances may occasionally occur in
which there is a failure despite such precautions on PerkinElmer’s
part. PerkinElmer regrets that it cannot accept li ability for damages
of any kind caused as a result of either failure of the user to follow
instructions or of 2020 to perform.
Page 2
Page 3
Photovac Model 2020
Portable Photoionization Detector
Page 4
Part No. 350001 Rev E
Release History
Part Number Releas
Publication Date
e
350001 E February 2000
350001
User Assistance
PerkinElmer
761 Main Avenue
Norwalk. CT
06859-0010 U.S.A.
Printed in Singapore
Notices
The information contained in this document is subject to change without
notice. PerkinElmer makes no warranty of any kind with regard to the
material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose.
D June 1997
PerkinElmer shall not be liable for errors contained herein for incidental
consequential damages in connection with furnishing, performance or use
of this material.
Copyright Information
This document contains proprietary information that is protected by
copyright. All rights are reserved. No part of this publication may be
reproduced in any form whatsoever or translated into any language without
the prior, written permission of PerkinElmer, Inc.
Copyright © 2000 by PerkinElmer
Trademarks
Registered names, trademarks, etc. used in this document, even when not
specifically marked as such, are protected by law.
2020™ is a trademark of PerkinElmer, Inc.
Page 5
Reference No. 600762 Rev E
Page 6
Page 7
Contents
Contents
Introduction
About this Manual ................................................................ 23
Warnings and Safety Practices .............................................. 24
Approved Models of 2020 ................................................24
Compressed Gases ..........................................................25
Regulators for Compressed Gases ....................................26
Calibration Gas................................................................ 26
Battery Pack Care ........................................................... 26
Excessive Heat and Cold .................................................. 27
Unpacking............................................................................ 27
Support Equipment and Consumables ..................................... 28
Calibration....................................................................... 28
Field Operation................................................................ 29
Printer............................................................................. 29
Computer........................................................................ 30
Battery Charging.................................................................. 30
Removing and Replacing the Battery Pack ........................ 30
Charging the Battery Pack............................................... 31
Overview............................................................................. 34
Tutorial Session
Displays............................................................................... 39
Meter Display.................................................................. 39
Status Display.................................................................. 39
Keys.................................................................................... 40
Fixed Keys...................................................................... 40
Soft Keys........................................................................ 42
Entering Text With the Soft Keys ..................................... 42
Beginning Operation .............................................................43
Turning 2020 On.............................................................. 43
Default Display................................................................ 43
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2020 Software Manual
Monitoring............................................................................ 44
Instrument Status............................................................. 44
Alarms............................................................................ 46
STEL, TWA, MAX and PEAK Operation .............................46
Short Term Exposure Limit (STEL) Mode......................... 47
Time Weighted Average (TWA) Mode............................. 48
MAX Mode ..................................................................... 50
PEAK Mode ...................................................................50
Set Functions ........................................................................ 51
Pump.............................................................................. 51
Clock.............................................................................. 53
Cal.................................................................................. 54
Library............................................................................ 54
Log Functions ....................................................................... 55
Mode ..............................................................................55
Edit................................................................................. 57
Print................................................................................ 59
Display Functions ................................................................. 61
Light............................................................................... 61
Mode ..............................................................................62
Lock............................................................................... 62
Unlock............................................................................ 64
vi
Detailed Operation
General Information .............................................................. 69
Calibration Using the Flow -Match Regulator .......................... 70
Connecting the Flow -Match Regulator to the Cylinder........ 70
Calibrating 2020 with the Flow -Match Regulator ................ 71
Calibration Using a Gas Bag.................................................. 73
Preparing the Calibration Gas Bag and the Zero Air Bag.... 73
Calibrating 2020 with a Gas Bag ....................................... 75
Programming the Cal Memories ............................................76
Response Factors for Gases and Vapors ................................ 78
General Information......................................................... 78
Using Response Factors ................................................... 78
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Contents
Manual Operation ................................................................. 79
Preparing for Field Operation ................................................82
Field Check List............................................................... 82
Operational Check List..................................................... 84
Connecting Accessories
Printer .................................................................................89
Computer............................................................................. 90
Serial to Parallel Converter.................................................... 96
DIP Switch Settings ConverterDIP Switches..................... 97
Using 2020 with the Serial to Parallel Converter................. 99
Sample Line ........................................................................100
Wrist Strap..........................................................................101
Dilution Probe .....................................................................101
Description.....................................................................101
Assembling the Dilution Probe .........................................102
Installing the Dilution Probe .............................................102
Calibration with the Dilution Probe ...................................103
High Accuracy Operation................................................105
DC Power Cord ..................................................................105
Belt Clip Holster ..................................................................106
11.7 eV UV Lamp...............................................................106
General Information........................................................106
Limitations of Lithium Fluoride Lamp Window ..................107
Using the 11.7 eV UV Lamp ...........................................107
Off Line Charger.................................................................110
General Information........................................................110
Charging from an AC Source ..........................................110
Charging from a DC Source............................................111
Routine Maintenance
Battery Charging.................................................................115
Maintenance of the UV Lamp ..............................................116
Removing and Replacing the UV Lamp............................116
Cleaning the UV Lamp Window ......................................117
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2020 Software Manual
Troubleshooting
Technical Description
Cleaning the Lithium Fluoride Window .............................120
Replacing the Sample Inlet Filter...........................................120
Maintenance of the Dilution Probe........................................122
Charcoal Filter ................................................................122
Inlet Filter.......................................................................122
General Information .............................................................127
Fault Messages ...................................................................127
Troubleshooting...................................................................132
Printer Troubleshooting........................................................142
Serial to Parallel Converter Troubleshooting ..........................144
Establishing Computer Communications ................................148
General Operation ...............................................................155
Photoionization Detector ......................................................156
viii
Calibration...........................................................................158
Datalogger..........................................................................158
Interval Operation ...........................................................158
Manual Mode .................................................................160
Appendices
Specifications ......................................................................163
Warranty ............................................................................165
Contacting PerkinElmer .......................................................166
Installing Alternate AC Plug on the Battery Charger ..............167
Calibration Gas Supplier.......................................................167
Using the Gas Bag...............................................................168
Response Factors................................................................169
Library Entries ....................................................................174
References .........................................................................177
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Contents
Index ............................................................................................180
Figures
Figure 1 Battery Pack Removal and Replacement .........................33
Figure 2 Layout of 2020............................................................... 40
Figure 3 Function Map ................................................................. 41
Figure 4 Soft Arrow Keys............................................................ 42
Figure 5 Status Displays............................................................... 44
Figure 6 Set Function Map........................................................... 51
Figure 7 Log Function Map.......................................................... 55
Figure 8 Tabular Report (Averaging Interval) ................................59
Figure 9 Graphical Report (Averaging Interval) ............................. 60
Figure 10 Display Function Map ..................................................... 61
Figure 11 Flow-Match Regulator ....................................................70
Figure 12 Gas Bag Adapter............................................................ 74
Figure 13 Connecting 2020 to a Serial Printer.................................. 90
Figure 14 Connection Description Dialog Box.................................. 93
Figure 15 Connect To Dialog Box................................................... 94
Figure 16 Properties Dialog Box ..................................................... 95
Figure 17 Properties Dialog Box ..................................................... 96
Figure 18 Layout of Serial to Parallel Converter ..............................97
Figure 19 Connecting 2020 to the Serial to Parallel Converter..........100
Figure 20 Dilution Probe Layout....................................................102
Figure 21 Installing the Dilution Probe............................................103
Figure 22 Removing the UV Lamp................................................117
Figure 23 Replacing the Inlet Filter ................................................121
Figure 24 Removing the Dilution Probe Inlet Filter..........................123
Figure 25 Printer Cable Configuration............................................143
Figure 26 Serial to Parallel Converter Parallel Port Signals ..............147
Figure 27 Connecting 2020 Using the Null Modem Cable ................149
Figure 28 Connecting 2020 Using the Gender Changer....................150
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2020 Software Manual
Figure 29 2020 Block Diagram ......................................................155
Figure 30 Photoionization Detector ................................................157
Figure 31 Using the Gas Bag.........................................................169
Tables
Table 1 Instrument Status............................................................. 46
Table 2 Averaging Intervals and Periods ....................................... 56
Table 3 Check List for Field Operation .......................................... 83
Table 4 Additional Field Items ....................................................... 84
Table 5 DIP Switch Settings for Baud Rate................................... 98
Table 6 DIP Switch Settings for Parity .......................................... 98
Table 7 DIP Switch Settings......................................................... 99
Table 8 Serial to Parallel Converter Parallel Port Signal.................146
Table 9 Serial to Parallel Converter Serial Port Signals ..................147
Table 10 Serial Port Pin Definitions ................................................150
Table 11 Contact Information........................................................166
Table 12 Response Factors ...........................................................173
Table 13 Library Entries................................................................176
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Page 13
Notices and Warnings
Page 14
Page 15
Notices and Warnings
FCC Warning
This equipment has been tested and found to comply with the limits
for a Class B Digital Device, pursuant to Subpart B, Class B of Part
15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environme nt. This equipment generates,
uses and can radiate radio frequency energy and if not installed and
used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own
expense.
2020 I/S Notice
CONFORMSTO
UL STANDARD 913
CERTIFIED TO
CSA STANDARD
CSA 22.2 No. 157
Intrinsically safe/Sécurité intrinsèque for use in Class I, Division 1,
GroupsA, B, C, D, Hazardous Locations, Temperature Code T4, Exia
2020 I/S IS CLASSIFIED FOR USE IN CLASS I, DIVISION 1,
GROUPS A, B, C, D HAZARDOUS LOCATIONS. T4 (135°C)
RATING.
It has been listed by ETL® to comply with Underwriters
Laboratories® Inc. UL® 913 Standard for Intrinsically Safe
Apparatus and Associated Apparatus for use in Class I,
Division 1, Groups A, B, C, D Hazardous (Classified)
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2020 Software Manual
Locations, Fourth Edition. 2020 I/S IS NOT INTENDED TO
DETECT COMBUSTIBLE LEVELS OF GASES. 2020 I/S IS
CLASSIFIED FOR USE IN ATMOSPHERES CONTAINING
COMBUSTIBLE LEVELS OF GASES.
These accessories are for use with 2020 I/S in a hazardous location:
Do not use any other accessories with 2020 I/S in a haza rdous
location.
MX350006 Calibration Regulator
MX350007 Wrist Strap
MX350008 Belt-Clip Holster
MX350010 Carrying Case
MX350014 User’s Reference Card
MX390006 Long Sample Probe
MX395001 Short Sample Probe
Substitution of components may affect safety rating.
xiv
Page 17
Notices and Warnings
To reduce the risk of fire or injury to persons, read and follow
these instructions:
CAUTION
1. All calibration, maintenance and servicing of this device,
including battery charging, mu st be performed in a safe
area away from hazardous locations.
2. For replacement battery pack use only Part No.
MX350009.
3. Do not dispose of the battery pack in a fire. The cell may
explode. The battery pack must be disposed of properly.
Check with local codes for possible special disposal
instructions.
4. Do not open or mutilate the battery pack.
5. Exercise care in handling battery packs in order not to
short the terminals with conducting materials such as
rings, bracelets and keys. The battery or conductor may
overheat and cause burns.
6. Do not defeat proper polarity orientation between the
battery pack and battery charger.
7. Charge the battery pack using the AC adapter provided
with or identified for use with this product only in
accordance with the instructions and limitations specified
in this manual. For AC adapter use only Part No.
MX350002 (115 Volts AC), MX396013 (220 Volts AC).
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2020 Software Manual
2020 I/SC EST CLASSIFIÉ POUR USAGE DANS LES
EMPLACEMENTS DANGEREUX DE CLASSE I, DIVISION 1,
GROUPES A, B, C, D. ÉVALUATION T4 (135ºC).
2020 I/SC est conforme à la norme des Underwriters Laboratories
Inc. UL 913 Standard for Intrinsically Safe Apparatus and
Associated Apparatus for use in Class I, Divisio n 1, Groups A,
B, C, D Hazardous (Classified) Locations. Quatrième édition.
2020 I/SC est conforme à la norme de CSA Standard 22.2 No.
157-92 - Intrinsically Safe and Non-Incendive Equipment for
Use in Hazardous Locations.
2020 I/SC C’EST NE PAS INTENDER POUR DÉTECTER DES
NIVEAUX DE COMBUSTION DES GAZ. CET APPAREIL
EST CLASSIFIÉ POUR USAGE DANS DES ATMOSPHÈRES
CONTENANT DES NIVEAUX DE COMBUSTION DES GAZ.
ATTENTION
xvi
Les accessoires suivants peuvent également être utilisés avec
l’appareil dans un emplacement dangereux:
MX350006 Régulateur de calibration
MX350007 Sangle de poignet
MX350008 Étui de ceinture
MX350010 Étui de transport
MX350014 Carte de référence
MX390006 Gamme d’échantillons
MX395001 Petite Gamme d’échantillons
Ne pas utiliser d’autres accessoires avec cet appareil dans un
emplacement dangereux.
La substitution des composantes peut nuire à la sécurité d’emploi.
Page 19
Notices and Warnings
Afin de réduire les risques d’incendie et les blessures, lire et suivre
ces instructions:
MISE EN
GARDE
1. Tout étalonnage, entretien et réparatio n de cet appareil, y
compris le chargement de la pile, doit être effectué dans
un endroit sûr, à l’écart des zones dangereuses.
2. N’utiliser que la pièce numéro MX350009 lorsqu’il faut
remplacer le bloc-pile.
3. Ne pas jeter la pile dans un feu. La cellule pourrait
exploser. Vérifier les codes locaux, qui peuvent comporter
des instructions de mise au rebut particulières.
4. Ne pas ouvrir et ne pas abîmer le bloc-pile.
5. Manipuler le bloc-pile avec soin, afin de ne pas court-
circuiter les bornes avec des matériels conducteurs tels
qu’une bague, un bracelet ou des clés. La pile ou le
conducteur pourraient surchauffer et causer des
brûlures.
6. Ne pas modifier l’orientation de la polarité appropriée
entre le bloc-pile et le chargeur.
7. Charger le bloc-pile f ourni avec ou reconnu pour usage
avec ce produit seulement conformément aux instructions
et restrictions spécifiées dans ce manuel. Pour le
chargeur, n’utiliser que la pièce numéro MX350002 (115
Volts AC), MX396013 (220 Volts AC).
xvii
Page 20
2020 Software Manual
2020 Ex Notice
CONFORMSTO
EEx ib m IIC T4.
DEMKONO. 95D119 472
CLASSIFIEDBY DEMKO AS INSTRINSICALLY SAFE FOR
USE IN ZONE 1 LOCATIONS. EEx ib m IIC T4.
DEMKO NO. 95D 119 472
Made in
Canada
2020 Ex complies with the harmonized European Standards
EN50014 incl. amd. 1 - 5, EN50020 incl. amd. 1 - 5.and EN50028,
First Edition (1987).
2020 EX IS NOT INTENDED TO DETECT COMBUSTIBLE
LEVELS OF GASES. 2020 EX IS CLASSIFIED FOR USE IN
ATMOSPHERES CONTAINING COMBUSTIBLE LEVELS OF
GASES.
These optional accessories may be used with 2020 Ex in a
hazardous location:
MX350006 Calibration Regulator
MX350007 Wrist Strap
MX350008 Belt-Clip Holster
MX350010 Carrying Case
MX350014 User’s Reference Card
xviii
MX390006 Long Sample Probe
MX395001 Short Sample Probe
Do not use any other accessories with 2020 Ex in a hazardous
location.
Substitution of components will invalidate certificate.
Page 21
Notices and Warnings
To reduce the risk of fire or injury to persons, read and follow
these instructions:
CAUTION
1. All calibration, maintenance and servicing of this device,
including battery charging, must be performed in a safe
area away from hazardous locations.
2. For replacement battery pack use only Part No.
MX350009.
3. Do not dispose of the battery pack in a fire. The cell may
explode. The battery pack must be disposed of properly.
Check with local codes for possible special disposal
instructions.
4. Do not open or mutilate the battery pack.
5. Exercise care in handling battery packs in order not to
short the terminals with conducting materials such as
rings, bracelets and keys. The battery or conductor may
overheat and cause burns.
6. Do not defeat proper polarity orientation between the
battery pack and battery charger.
7. Charge the battery pack using the AC adapter provided
with or identified for use with this product only in
accordance with the instructions and limitations specified
in this manual. For AC adapter use only Part No.
MX350002 (115 Volts AC), MX396013 (220 Volts AC).
xix
Page 22
2020 Software Manual
CE Directive
Council Directive 89/336/EEC - Electromagnetic Compatibility
and the Applicable Standards. 2020 complies with EN50082-01
Generic Immunity Standard for Electromagnetic Compatibility Part
1: Light Industrial Environment. 2020 has been tested and conforms
to the guidelines specified in EN50082-02 Generic Immunity
Standard for Electromagnetic Compatibility Part 2: Industrial
Environment
Council Directive 91/157/EEC - Recovery and Disposal of
Spent Batteries
You must use the 220 V battery charger (Part No. MX396013) in
order to comply with the requirements of the applicable Council
Directives.
CONFORMS TO
COUNCIL DIRECTIVE 89/336/EEC
COUNCIL DIRECTIVE 91/157/EEC
xx
Page 23
Introduction
1
Page 24
Page 25
Introduction
About this Manual
This manual provides detailed instructions for setup, operation and
maintenance of the 2020™ Portable Photoionization Detector.
Before unpacking the instrument, please read Warnings and Safety
Practices on page 24. This section describes possible hazards that
might injure the user, damage the instrument or compromise its
operation. Some general safety information is also provided.
To help you learn to use 2020 quickly, this manual is organized by
tasks beginning with a tutorial and description of operation in
Chapter 2. More detailed operational instructions are provided in
Chapter 3. Accessories are covered in Chapter 4. Routine
maintenance is covered in Chapter 5. Troubleshooting techniques
are covered in Chapter 6. Chapter 7 provides a technical description
of 2020.
The 2020 manual uses a few conventions for key names on the
keypad and for text that is shown on the display.
UPPERCASE Fixed key names are denoted by
uppercase text.
“Display Text” Text that appears on the 2020 status
display is in quotation marks.
Soft key names are also shown in
quotation marks.
<Angle Brackets> Computer keyboard names are denoted
by angle brackets, e.g. <Ctrl>.
C:\2020 Text that must be typed in using the
computer keyboard is shown in italics.
23
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2020 Software Manual
In the text you will find various warnings and notes.
WARNING
CAUTION
NOTE: A note indicates significant information.
A warning indicates an operation that could cause personal injury
if precautions are not followed
A caution indicates an operation that could cause instrument
damage if precautions are not followed.
24
Warnings and Safety Practices
Please read this section before operating 2020.
Approved Models of 2020
This manual provides operational information for all models of 2020.
The 2020 I/S and the 2020 Ex are intrinsically safe and approved for
use in hazardous locations. Refer to the manual introduction for
details of each approval.
Throughout the manual, notes are provided to inform you of the
limitations of usage for the 2020 I/S and 2020 Ex models.
Page 27
Introduction
If the 2020 you are using is not specifically identified as
intrinsically safe, do not use it in a location were flammable
concentrations of gases and vapors may exist.
WARNING
Compressed Gases
Cylinders of compressed gas, such as calibration gas, must be
handled with extreme care. For safety, the calibration gas cylinders
must be secured before use.
Please observe the following handling procedures:
? Mark each new regulator with its intended gas service and
never use a regulator for more than one service. To ensure
safety and avoid contamina tion, regulators should be dedicated
to one service. Do not change gas service or adapt equipment
without consulting your gas supplier.
? Do not heat or expose cylinders or regulators to temperatures
above 52°C (125°F). The cylinders may rupture at high
temperatures.
? Use only the specified regulator for the calibration gas. Confirm
regulator type and material with your speciality gas supplier.
? Always secure cylinders before removing the cylinder valve
protection cap.
? Do not drag or roll cylinders. Large cylinders should only be
moved on carts designed for compressed gas cylinders. Do not
move cylinders without the valve protection cap in place.
? Wear safety glasses when working with compressed gases.
? Do not store cylinders in a hazardous location. Store cylinders in
an upright position away from possible sources of heat or
sparks.
? Never plug, obstruct or tamper with safety relief devices.
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2020 Software Manual
Regulators for Compressed Gases
When connecting a regulator to a large cylinder:
? Ensure cylinder valve and regulator connection match.
? Ensure regulator construction materials are compatible with the
? Never use the regulator as a shut-off valve. Close the cylinder
? Do not subject the regulator to an inlet pressure greater than
? Do not move or detach the regulator when it is pressurized or
? Before connection, ensure the gas cylinder valve and the
? Turn the pressure control valve on the cylinder all the way out
gas, and that the cylinder pressure gauge will withstand the
cylinder pressure.
when it is not in use.
recommended.
when it is in use.
regulator CGA connection are clean.
(close the cylinder). Turn the regulator outlet to off. Open the
gas cylinder valve slowly and check for leaks. Adjust the
delivery pressure and then open the regulator outlet valve.
26
Calibration Gas
Adequate ventilation must be provided when 2020 is being
calibrated.
If compound threshold limit values (TLV™) are exceeded, you
should use a gas bag for sampling and calibration.
To determine the TLV of the compounds contained in the calibration
gas, refer to the Material Safety Data Sheet (MSDS) supplied with
your calibration gas cylinder. See Calibration Using a Gas Bag on
page 73 for more details.
Battery Pack Care
Leaving 2020 for more than 3 months, without turning it on, may
result in the loss of recorded data and setup parameters. If 2020 is
Page 29
Introduction
not used for long periods of time, turn the instrument on for a few
hours every month to avoid loss of data. See Battery Charging on
page 30 for instructions on charging the battery.
Please observe the following:
? For replacement battery pack use only Part No. MX350009.
? Do not dispose of the battery pack in a fire. The cell may
explode.
? The battery pack is 24% cadmium (Cd) by weight. This battery
pack must be disposed of properly. Check with local codes for
special disposal instructions.
? Do not open or mutilate the battery pack.
? Exercise care in handling battery packs in order not to short the
terminals with conducting materials such as rings, bracelets and
keys. The battery or conductor may overheat and cause burns.
? Charge the battery pack using the AC adapter provided with or
identified for use with this product only in accordance with the
instructions and limitations specified in this manual. For AC
adapter use only Part No. MX350002 (North America) or
MX396013 (Europe).
Excessive Heat and Cold
Do not expose the instrument to intense sunlight for prolonged
periods.
Exposure to excessive heat or cold may result in erroneous readings.
Unpacking
The following accessories are included with your 2020:
1. Sample Probe
2. Instrument Manual
3. Multi -Tool
27
Page 30
2020 Software Manual
Ensure all of these accessories have been included with the
instrument. If any items are missing or damaged, contact
PerkinElmer immediately.
Support Equipment and Consumables
Calibration
For normal operation these items are required:
4. AC Adapter or AC Adapter with AC Line
Cord
5. Wrist Strap
6. Replacement Sample Inlet Filters (10 pieces)
7. Reference Card
1. Calibration Gas Regulator (Part No. MX350006).
2. Calibrat ion gas containing 100 ppm isobutylene. (Part
No. MX350012). Other concentrations of the calibration
gas may be required. This will depend on your
application.
3. Zero air . Occasionally, clean, ambient air is suitable for
calibration.
Alternatively, you can use a gas sampling bag and a
source of hydrocarbon free air. Air should not have
more than 0.1 ppm total hydrocarbons (THC).
If you will be using large tanks of gas, specify a single
stage, high purity regulator with a CGA 590 connection
at the inlet. The regulator should also have a 1/8”
parallel, compression fitting with which to connect the
regulator to the gas bag adapter. The delivery pressure
must be adjustable to between 5 and 20 psig (34.5 and
138 kPa). You may require a gas bag and gas bag
28
Page 31
Introduction
adapter (Part No. MX395072 - gas bag, MX395073 gas bag and adapter).
4. If compound threshold limit values (TLVs) are
exceeded, you should use a gas bag for sampling and
calibration.
To determine the TLV of the compounds contained in
the calibration gas, refer to the Material Safety Data
Sheet (MSDS) supplied with your calibration gas
cylinder.
If you will be using a gas bag for calibration, you should
obtain the calibration kit (Part No. MX390033). The
calibration kit contains a regulator, a gas sampling bag
and a gas bag adapter. See Calibration Using a Gas Bag
on page 73 for details.
Field Operation
For field operation, a 2020 Field Kit (Part No. MX350005) is
available. The field kit includes a cable kit, a carrying case and a
calibration regulator, spare battery pack and a cylinder of 100 ppm
isobutylene calibration gas.
Refer to the check list in Preparing for Field Operation on page
82 to ensure you have all the necessary accessories and equipment
before beginning field operation.
Printer
2020 may be used with a printer to generate printed reports. The
printer must have a printing width of at least 65 characters and must
use fixed spaced fonts. See Printer on page 89 for details of
connecting a printer to 2020.
If you are using a parallel printer, you will need the serial to parallel
converter (Part No. MX380145). See Serial to Parallel Converter
on page 96 for details of connecting and operating 2020 with a serial
to parallel converter.
29
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2020 Software Manual
NOTE: 2020 is not classified for use in hazardous locations with a
printer.
Computer
2020 may also be connected to a computer. The computer must be
100% compatible with an IBM PC. Use the cable kit (Part No.
MX350011) to connect 2020 to the computer.
You will also need terminal emulation software. If you are using
Microsoft® Windows™ you do not need to purchase any separate
software. If you are already using another type of communication or
terminal emulation software package, it is not necessary to purchase
separate software for 2020. See Computer on page 90 for details.
NOTE: 2020 is not classified for use in hazardous locations with a
computer.
Battery Charging
Before beginning operation of 2020, the battery pack must be
charged. You can also remove the battery pack and replace it with a
fully charged, spare battery pack (Part No. MX350009).
NOTE: You must use the 220 V battery charger (Part No. MX396013)
in order to comply with the requirements of the applicable
Council Directives.
Removing and Replacing the Battery Pack
NOTE: Do not remove or recharge the battery pack in a hazardous
location.
To remove the battery pack
1. If the instrument has been turned on, turn it off by
pressing the ON/OFF key momentarily and then
releasing it.
30
Page 33
Introduction
NOTE: If you do not turn 2020 off before removing the battery pack,
you will reset the instrument and you will lose all logged data
and setup parameters.
2. Locate the battery hatch on the back of the instrument.
See Figure 1.
3. Loosen the two screws in the battery hatch.
4. The battery hatch can now be removed.
5. Lift the battery pack out of the case and carefully
disconnect the connector from 2020.
6. Attach the connector from the charged battery pack to
the 2020.
NOTE: The connector is polarized. It will only fit one way. Do not force
the connection.
7. Place the battery pack in the 2020 case. Ensure the
battery wires are not pinched or strained.
8. Ensure the wrist strap ring is in place. This ring holds
the wrist strap in place.
9. Replace the battery hatch and then replace the two
screws. Do not over-tighten the screws as you will
damage the case.
Charging the Battery Pack
NOTE: Only use the AC adapter specified for use with 2020. Using
another AC adapter will result in damage to the battery pack,
2020 or the adapter itself.
To charge the battery pack:
1. Plug the AC adapter into the jack located on the back of
the 2020. See Figure 1.
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2. Plug the AC adapter into an AC outlet. If you are using
the European AC adapter, ensure the correct plug is
installed on the line cord. If it is not correct for the wall
outlet in your area then it must be replaced. See
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Introduction
Installing Alternate AC Plug on the Battery Charger
on page 167.
3. The LED on the 2020 indicates the charge state. Red
indicates the battery is being charged. Green indicates
the battery is fully charged and ready for use.
It is normal for a fully charged battery to indicate it is
charging (red light) when first plugged in. The LED will
turn green as the battery charges.
4. When the battery pack is fully charged remove the AC
adapter, first from the wall outlet and then from 2020.
AC AdapterJack
Battery LED
Battery Pack
Battery Pack
Connector
Battery Hatch
Figure 1 Battery Pack Removal and Replacement
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Charging a fully discharged battery pack will take approximately 4
hours.
Optionally you can use the off line charger (Part No. MX350015) to
charge the battery pack independently of the instrument. See Off
Line Charger on page 110.
If you are charging the battery pack in the instrument you can use
all the features of 2020 while the battery pack is being charged.
Leaving the AC adapter connected to 2020 will not harm the battery
or the AC adapter in any way. If 2020 is to be left indefinitely, leave
it connected to the AC adapter so that the battery will be fully
charged and ready for operation.
On average a fully charged battery pack will provide 8 hours of
continuous operation. Battery life is shorter if the instrument is
turned off and then on again repeatedly, or if the backlighting is
turned on.
Overview
2020 measures the concentration of airborne photoionizable gases
and vapors and automatically displays and records these
concentrations. It does not distinguish between individual pollutants.
The reading displayed represents the total concentration of all
photoionizable chemicals present in the sample. 2020 is factory set
to display concentration in units of ppm or mg/m³.
2020 operates automatically. The meter display updates itself once
per second. You can read concentrations directly from the meter
display. If you are using the dilution probe (Part No. MX350013)
you must multiply the displayed reading by the dilution factor. See
Dilution Probe on page 101 for details.
2020 is always performing short term exposure limit (STEL), time
weighted average (TWA) and PEAK calculations. You can view
any of these results, but only one mode may be viewed at a time.
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Introduction
2020 has many datalogging options . You can select an averaging
interval, or you can use manual operation. If you select an averaging
interval, the minimum, maximum, and average concentrations
measured in each period are automatically recorded in 2020’s
datalogging memory. 2020 can log up to 1000 entries.
In manual operation, 2020 prompts you to locate a site and then to
record a background and sample readings for the site. You can
record up to 1000 manual entries. There is no averaging of data in
manual operation.
Recorded data can be reviewed on the display, sent to a printer in
either tabular or graphical format, or sent to a computer. Data are
recorded by date and time.
2020 has 6 keys for alphanumeric entry and for accessing 2020’s
functions. The keys are used to set up and calibrate 2020. They
allow you to manipulate the concentration data in various ways.
All information entered with the keys and stored in 2020’s memory
is retained when the instrument is switched off. The clock and
calendar continue to operate and do not need to be set each time
2020 is turned on.
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Displays
The 2020 has a meter display for reporting detected concentration,
and a status display used to display status information and guide you
through configuration options. All functions of the 2020 will be
controlled or reported using one of these displays.
Meter Display
The meter display is a 4 digit display. It will always be used for
reporting detected concentration. When the detector and pump are
off, the meter display will be blank.
In order to accommodate the range of concentrations 2020 can
detect, the meter reading will be reported using one of 2 resolutions.
A resolution of 0.1 will be used for concentrations be low 100 ppm,
and a resolution of 1 will be used for concentrations above 100 ppm.
The meter display reports PEAK, MAX, STEL or TWA
concentration. The update rate is dependent on the reading being
reported. See STEL, TWA, MAX and PEAK Operation on page 46
for a description of these measurements.
Status Display
The status display is a 2 line by 16 character display. The top line is
used to display status information and prompts you for information.
The bottom line is used for soft key names. Up to 3 names can be
displayed for the three soft keys. If a name does not appear for a
soft key, then the soft key has no associated function.
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Sample Inlet
AlarmLED
MeterDisplay
Keys
Status Display
SoftKeys
ON/OFFKey
EXITKey
ACAdapter
Sample Outlet
(accesson underside)
Speaker
(accesson underside)
ENTER Key
BatteryPack
(accesson underside)
Jack
Battery LED
I/O Port
Figure 2 Layout of 2020
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Fixed Keys
The three round keys below the soft keys each have a fixed
function. The first key is the ON/OFF key, the middle key is EXIT
and the last key is ENTER.
The ON/OFF key is used to both turn power on to the 2020 as well
as turn the power off. To turn on 2020, press the ON/OFF key. To
turn the power off, press the ON/OFF key and hold it down for 2
seconds, and then release it . This is done to prevent accidental
power off.
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The EXIT key provides a way of returning to the default display. In
the functional map, the soft keys allow you to advance and the EXIT
key provides a way to go back. See Figure 3. If you are at the root
entry of the menu, EXIT will return you to the default display.
Set Pump
Clock
Cal Zero
Log
Disp Lght
Prnt
Edit Next
Mode
Mode
Lock Passwd?
Togglespump and detector on/off
Sets Date and Time
Zeroes instrument
Span
Spans instrument
Mem
Grph
Tabl From
Prev
Del
Next
Prev
Toggles backlighting on/off
TWA
STEL STEL meter
MAX MAXmeter
Peak PEAK meter
Next
Prev
Chng
From
To
To
Edits the datalogger
Curr Deletes current log entry
All
Range
Sets operating mode as Manual, 15 s, 1 m, 2m, 5m o r 1 5m
TWA meter
User Sets Name, RF, and Alarms
Lib Next
Generates a graphical report
Generates a tabular report
Deletes all log entries
If l ocked then
If unlocked then
Deletes a range of log entries
From
To
Chng
Chng
Prev
Unlk
Lock
Unlocks instrument
Changes password
Locks instrument
Changes password
Figure 3 Function Map
The ENTER key has a context sensitive function. When you are
operating or navigating through the function map, the ENTER key is
used to exit the functions and return you to the default display.
When entering data such as a name, number, date or time, ENTER
is used to confirm the entry.
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Soft Keys
The three soft keys on 2020 are located directly below the status
display. Each key has varying functions for configuring 2020, editing
the datalogger, and controlling the display. Since only three soft keys
are available, each function is broken down into a path. A map,
showing each path and the resulting functions, is shown in Figure 3.
Entering Text With the Soft Keys
For all information that you must enter, the left, center and right soft
keys correspond to the up, down, and right arrow. See Figure 4.
The up and down arrows are used to change the character
highlighted by the cursor. The right arrow is used to advance the
cursor to the next character on the right. When the cursor is
advanced past the right most character, it wraps around to the first
character again. To accept the changes, press the ENTER key. To
ignore the changes, press EXIT.
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Figure 4 Soft Arrow Keys
Formatting characters, such as the colon (:) in the time, the decimal
(.) in a concentration, and the slash (/) in date are skipped whe n
advancing the cursor.
All inputs use an 8 character input, which is displayed on the right
side of the top line of the status display. The prompt, describing the
input, occupies the left half of the top line. The soft keys are defined
on the bottom line of the status display.
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Beginning Operation
Turning 2020 On
1. Turn 2020 on by pressing the ON/OFF key. See Figure
2 for the location of the ON/OFF key.
2. 2020 will display the software version number. Wait for
the 2020 to proceed to the default display.
3. Allow 10 minutes for the instrument to warm-up and
stabilize.
Default Display
The meter display shows the detected concentration. The resolution
of the display changes with the magnitude of the reading. A reading
of 0 to 99.9 will be displayed with a resolution of 0.1 ppm or mg/m³.
A reading greater than 99.9 will be shown with a resolution of 1 ppm
or mg/m³. The meter will display concentrations up to 2000 ppm or
2000 mg/m³.
The status display is used to display the instrument status, date, time,
units and active soft keys. Figure 5 shows the status displays.
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Instrument
Status
Time
Concentration
Units
Soft Key
Functions
Date
Figure 5 Status Displays
The default display provides the following information: instrument
status, current detected concentration, time, date and measurement
units. The status display toggles between showing time and units and
then the date.
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When the display mode is MA X, the date and time correspond to the
date and time the MAX concentration was recorded. In TWA
mode, the time represents the number of hours and minutes during
which the TWA has been accumulating. For PEAK and STEL
monitoring, the date and time correspond to the current date and
time.
Monitoring
Instrument Status
The instrument status is shown on the left of the first line of the
status display and on the Table and Graph outputs. Each status has a
priority assigned to it. If more than one status is in effect, then the
status with the highest priority is displayed until the condition is
corrected or until the option is turned off. Table 1 is a lis t of the
possible status messages.
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Status Description
Falt1 Zero fault.
Falt2 Span fault.
Falt3 Lamp fault.
Falt4 Pump fault. See Fault Messages on page
127.
Cal Will not be observed on the display during
normal operation as various calibration
prompt messages are displayed during
calibration. If the instrument is turned off
during calibration, Cal will be displayed
when 2020 is turned on again to indicate
the last calibration was incomplete.
Over Instrument over range. The detector
electronics have become saturated. See
Fault Messages on page 127.
ALPK Detected concentration exceeds the PEAK
alarm level.
ALST STEL alarm level has been exceeded.
ALTW TWA alarm level has been exceeded.
LBat Battery pack power is low.
ELog The datalogger is full.
TWA TWA display mode.
MAX MAX display mode.
STEL STEL display mode.
Auto PEAK display mode.
Loc Locate site. Used for manual operation.
BkGd Record background reading. Used for
manual operation.
Samp Record sample reading. Used for manual
operation.
Off Pump is off
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Alarms
While operating the instrument, any one of three alarm conditions
can occur. To accurately identify the source of the alarm, each type
of alarm has been given a unique status. See Table 1.
In addition to the status, 2020 also has an audio alarm and an alarm
LED. To conserve power the 2020 alternates between the LED and
audio. Different alarms are identified by the frequency at which the
2020 alternates between the audio and LED; Peak alarm is 5 times
per second, STEL alarm is 2.5 times per second, and TWA alarm is
1.25 times per second.
The left soft key is used for acknowledging alarms, and is named
“Ack”. If no alarm exists, then the “Ack” key is not shown. To
clear the alarm, press the “Ack” key. Once acknowledged, the
alarm indicators are cleared. The alarm status will remain until the
alarm condition clears.
Table 1 Instrument Status
46
2020 updates the peak concentration once every second. Following
every update, the peak concentration is compared to the peak alarm
level, and if exceeded, an alarm is triggered.
If a 15 minute average exceeds the STEL, a STEL alarm is
generated.
The TWA alarm is generated when the current average of
concentration, since the TWA was last cleared, has exceeded the
TWA exposure limit.
During calibration, all alarms are disabled. Once the calibration is
complete, the alarms are re-enabled.
STEL, TWA, MAX and PEAK Operation
The 2020’s meter display can be configured to show one of 4
values: STEL, TWA, PEAK and MAX.
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Short Term Exposure Limit (STEL) Mode
The Short Term Exposure Limit (STEL) mode displays the
concentration as a 15 minute moving average. 2020 maintains 15
samples, each representing a one minute averaging interval.
Once every minute, the oldest of the 15 samples is replaced with a
new one minute average. This moving average provides a 15 minute
average of the last 15 minutes with a one minute update rate. Since
the average is calculated using 15 one minute averages, the meter
display will only update once every minute.
STEL is set to zero each time the instrument is turned on. Since
STEL is a 15 minute moving average, there is no need to clear or
reset the STEL.
STEL calculations are always being performed by 2020. You can
display the results of the calculations by selecting STEL as the
Display mode. See
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Mode on page 62 for details of switching between display modes.
Time Weighted Average (TWA) Mode
The TWA accumulator sums concentrations every second until 8
hours of data have been combined. If this value exceeds the TWA
alarm setting, a TWA alarm is gene rated. The TWA is not
calculated using a moving average. Once 8 hours of data have been
summed, the accumulation stops. In order to reset the TWA
accumulator, press the “Clr ” key.
This sum will only be complete after 8 hours, so the meter displays
the current sum divided by 8 hours. While you are in TWA mode,
the time on the status display will show the number of minutes and
hours of data that TWA has accumulated. When this reaches 8:00
or 8 hours, 2020 stops accumulating data and the TWA is complete.
TWA calculations are always being performed by 2020. You can
display the results of the calculations by selecting TWA as the
Display mode. See
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Mode on page 62 for details of switching between display modes.
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MAX Mode
The MAX mode displays the maximum signal, with the date and
time that it was recorded. 2020 continues to log data according to
the selected averaging interval, but only the maximum detected
concentration is displayed on the meter display.
The right soft key is used to clear the meter when displaying MAX.
The “Clr” key only affects the reading that the meter is displaying.
For example, if you display the MAX reading, and you press “Clr”,
only the MAX value is cleared. The TWA is still accumulating in the
background.
PEAK Mode
The PEAK mode displays the current detected concentration. The
reading is updated once a second. In the background, the 2020
datalogger is sampling the concentration and measuring minimum,
maximum, and average concentrations for the selected averaging
interval. At the end of every interval, one entry is placed in the
datalogger until the datalogger is full. See
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Mode on page 62 for details of switching between display modes.
Set Functions
Set functions are used to setup 2020. There are 3 functions which
can be set on the 2020; Calibration, Pump and Clock. Figure 6
shows a map detailing the Set functions and the key presses
required for accessing them.
Set Pump
Togglespump and detector on/off
Sets Date and Time
Clock
Cal Zero Zeroes instrument
Span
Mem
Spans instrument
Next
Prev
Chng User
Sets Name, RF, and Alarms
Lib Next
Prev
Figure 6 Set Function Map
Pump
The Pump function is used to control the pump. After selecting Set
Pump, 2020 responds by displaying the new pump status.
The detector is also turned off when you turn the pump off. This
prevents the detector from being damaged when there is no sample
flowing through the detector.
When the pump and the detector are off, the meter display will be
blank. Turn the pump and detector off when concentration
measurements are not necessary, and 2020 will only be used for
reviewing data or generating reports. By operating the instrument
with the pump and detector off when you do not need them, you will
conserve the battery and ultraviolet (UV) lamp.
To turn the pump on:
1. Press the ENTER key. The top line of the status display
changes to “Select?”. The bottom line displays 3 soft
key names; “Set”, “Log” and “Disp”.
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2. Press the soft key below “Set”.
3. The names of the soft keys change to reflect the Set
options. The display now shows 3 devices which can be
set: “Clock”, “Pump”, and “Cal”. Press the “Pump”
key.
4. The 2020 turns the pump off. If the pump was off,
pressing “Pump” will turn the pump on.
5. A message will be displayed to show you the status of
the pump. 2020 reverts back to the previous menu after
a few seconds.
6. To return to the default display, press the ENTER key.
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Clock
The Clock function is used to set both the current date and time.
To set the time:
1. Press the ENTER key.
2. Press the “Set” key.
3. When the names of the soft keys change, press the
“Clock” key.
The up and down arrows are used to change the
character underlined by the cursor. The right arrow is
used to advance the cursor to the next character on the
right. When the cursor is advanced past the right most
character, it wraps around to the first character again.
Formatting characters, such as the colon (:) in the time
and the slash (/) in the date are skipped when advancing
the cursor.
4. Use the “arrow keys” to enter the correct time. The
time is formatted as Hour:Minute:Second.
5. Press the ENTER key to confirm the time and move to
the date option.
6. When setting the date, the 2020 prompts you for the
current date formatted as Year/Month/Day. Use the
“arrow keys” to enter the correct date .
7. Press the ENTER key to confirm the date and return to
the Set options. You can wait for the display to timeout
or press ENTER to return to the default display.
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Cal
Cal allows you to setup and calibrate 2020. You have three options
under the Cal function: “Zero”, “Span” and “Mem”.
A calibration memory consists of a name, a response factor, and
PEAK, TWA and STEL alarm levels.
The “Zero” and “Span” keys will be covered in detail in General
Information on page 69.
To edit the calibration memory , select “Mem” and then “Chng”.
The 2020 prompts you with two new soft keys; “User” and “Lib ”.
Library
Library selections simplify Cal Memory programming, and provide
standard response factors for approximately 70 applications. “Lib”
allows you to select an entry from a pre-programmed Library. The
name, response factor and three alarm levels are all set from the
library.
54
To select a library entry to program the selected Cal Memory:
1. Select “Set”, “Cal”, “Mem”, “Chng” and “Lib”.
2. Use the “Next” and “Prev” keys to scroll through the
list. See page 174 for a list of the library entries.
3. When the required entry is displayed, press the ENTER
key to select it. All the Cal Memory parameters will
now be copied from the selected library entry to the
current calibration memory.
4. Press the “Set”, “Cal”, “Mem”, “Chng”, “User” keys to
review the Cal Memory settings.
The “User” key is used to edit the Cal Memory
information manually. Press ENTER to move you
through each step of the cal memory: name, response
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factor, PEAK, STEL and TWA alarms. “User” will be
covered in more detail in Chapter 3.
You can change any of the values entered in the Cal
Memory. Changes, made to the library information that
has been loaded into a Cal Memory, will have no effect
on the original library entry.
5. Press the ENTER key to proceed to the next step.
Log Functions
The Log functions provide options for reporting, editing and
configuring 2020’s built in datalogger. Figure 7 shows a map of the
Log func tions.
Log
Prnt
Edit
Mode Next
Grph From
Tabl
Next
Prev
Del
Prev
Edits the datalogger
Sets operating mode as Manual, 15 s, 1 m, 2m, 5m o r 1 5m
Generates a graphical report
To
From Generates a tabular report
To
Deletes current log entry
Curr
All Deletes all log entries
Range
Deletes a range of log entries
From
To
Figure 7 Log Function Map
Mode
2020 has two operating modes; manual and interval. When operating
the 2020 in manual mode, each log entry contains a background and
sample reading. In interval mode, 2020 automatically records the
minimum, maximum and average readings at the preset interval. The
2020 also records date, time and status with each entry in the
datalogger.
You can set an averaging interval: 15 seconds, 1 minute, 2 minutes,
5 minutes or 15 minutes. 2020’s datalogger can store 1000 entries.
The interval you select will determine the period of operation. At the
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Hours of Operation to
end of the period, the datalogger will be full and you will see an
“Elog” status .
To change the datalogging mode:
Averaging
Interval
Fill the Datalogger
15 s 4.1
1 m 16
2 m 33
5 m 83
15 m 250
Table 2 Averaging Intervals and Periods
1. Press the ENTER key.
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2. Press “Log” and select the “Mode” key.
3. Use the “Next” and “Prev” keys to scroll through the
list.
4. Press the ENTER key. If you select manual operation,
the datalogger will be cleared.
Before the datalogger is cleared, 2020 will confirm your
selection wit h the prompt “Are you sure?”. Press
“YES” to confirm your selection and clear the
datalogger. If you do not want to lose your previously
recorded data, press “NO”, then print or save the data
to disk before changing to manual operation. See
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Print on page 59, and Computer on page 90 for
printing and saving logged data.
Edit
Edit allows you to review and delete the contents of the datalogger.
To review the contents of the datalogger, use the “Next” and
“Prev” keys. The average concentration and the time it was
recorded are displayed. Hold down the keys to scroll through the
data more quickly.
To review and delete the contents of the datalogger
1. To delete entries from the datalogger, press “Del”. You
can delete the current entry, all entries or a range of
entries.
NOTE: Deleted information cannot be recovered. You should play back
and print or download the contents of the datalogger before
deleting any information.
2. To delete the current entry, press “Curr”. You will be
prompted to confirm your selection. Press “YES” to
delete the last displayed entry. Press “NO” to return to
the Delete options.
3. If you want to delete the entire contents of the
datalogger, press “All”. You will be prompted to
confirm your selection. Press “YES” to delete all
entries. Press “NO” to return to the Delete options.
4. If you want to delete a range of entries you must select
a start and stop time. Press “Range ” and use the
“Next” and “Prev” keys to select the start time.
5. Press the ENTER key, and select the stop time. All
entries between, and including, the start and stop entries
will be deleted.
NOTE: Deleting entries from the middle of the datalogger will not free
space to store more entries. Deleting entries from the start of
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the datalogger, or at the end of the datalogger will free usable
space.
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Print
You can print logged data in tabular or graphical format. You must
have a printer connected to 2020 in order to use the print options.
See Printer on page 89 for instructions on connecting and
configuring a printer for use with 2020. See Serial to Parallel
Converter on page 96 for instructions on connecting the serial to
parallel converter to 2020 and to the printer.
When you are using interval operation, the date, time and instrument
status are printed along with the minimum, average and maximum
concentration of each averaging interval. See Figure 8.
2020 Report
Date Time Status Min Avg Max
95/03/07 11:24:21 OK 3.5 15.4 62.7
95/03/07 11:24:36 OK 2.7 8.8 46.3
95/03/07 11:24:51 OK 12.2 57.9 98.2
95/03/07 11:25:06 OK 2.9 53.1 98.5
95/03/07 11:25:21 OK 3.5 232 238
95/03/07 11:25:36 OK 40.7 360 496
95/03/07 11:25:51 ALPK 60.3 606 916
95/03/07 11:26:06 ALPK 129 943 1832
95/03/07 11:26:21 ALPK 4.9 705 1702
95/03/07 11:26:36 OK 3.4 3.9 5.7
Figure 8 Tabular Report (Averaging Interval)
The graphical report prints a range of entries from the datalogger.
2020 stores one set of readings (Min, Avg and Max) for each
averaging interval. In each averaging interval the graphed minimum
is the minimum of all the stored readings in that interval. The
graphed Avg is the average of all the stored readings for the interval
and the Max is the maximum of all the recorded maximum readings.
In manual operation, the background, sample and the difference are
printed.
A minus sign is used to draw the graph from the minimum to the
average. Plus signs are used to graph the area between average and
maximum. See Figure 9.
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Date Time Status [0 2000]
95/03/07 11:24:21 OK ++
95/03/07 11:24:36 OK +
95/03/07 11:24:51 OK -+
95/03/07 11:25:06 OK -+
95/03/07 11:25:21 OK ----+
95/03/07 11:25:36 OK -------+++
95/03/07 11:25:51 ALPK -----------+++++++
95/03/07 11:26:06 ALPK ---------------+++++++++++++++++++
95/03/07 11:26:21 ALPK --------------+++++++++++++++++++++
95/03/07 11:26:36 OK +
In manual operation the date and time are printed. A minus sign is
used to draw the graph from the background to the difference. Plus
signs are used to graph the area between difference and sample.
Difference is calculated by subtracting the background from the
sample.
2020 Report
Figure 9 Graphical Report (Averaging Interval)
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To print your logged data:
1. Press the ENTER key. Select “Log”, “Prnt” and then
select “Grph” or “Tabl”.
2. Select a start time using the “Next” and “Prev” keys.
Hold down the “Next” and “Prev” to scroll through the
data quickly.
3. Press the ENTER key, and select the stop time. All
entries between, and including, the start and stop entries
will be printed.
While printing, the 2020 displays a busy message. Do not try to
perform additional functions while 2020 is printing. Pressing EXIT
will abort the printout.
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Although interval and manual mode generate different reports, the
format of the reports is similar. For interval data, the column
headings for the results are Min, Avg and Max. For manual data, the
column headings are BkGd, Sample and Diff.
Display Functions
The Display function is used to control and configure 2020’s display
options. These options control the backlighting, select the display
format, and lock the display to prevent access. Figure 10 shows a
map of the Display functions.
Disp
Lght Toggles backlighting on/off
Mode TWA TWA meter
Lock Passwd?
STEL
STEL meter
MAX meter
MAX
Peak PEAK meter
If locked then
If unlockedthen
Unlk
Chng
Lock
Chng
Unlocks instrument
Changes password
Locks instrument
Changes password
Figure 10 Display Function Map
Light
The Light function is used to switch the backlighting on and off.
To switch the backlighting on and off:
1. Press the ENTER key.
2. Select “Disp” and then press “Lght”. If the backlighting
was off, it will be turned on.
3. Press EXIT to return to the function display.
To extend the operating life of the battery pack, turn the backlighting
off when it is not required.
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Mode
The Mode function is used to select the display type. You can select
TWA, STEL, MAX, and PEAK.
To select the operating mode:
When you have selected the new display mode, the meter display
and status display will be updated to reflect the new mode. See
STEL, TWA, MAX and PEAK Operation on page 46 for a detailed
description of each mode.
1. Press the ENTER key.
2. Select “Disp” and then press “Mode ”. Select the mode
you want to view. The current mode is not assigned a
soft key.
For example, if the current mode is TWA, then when
you press the “Mode” key, “PEAK”, “STEL” and
“MAX ” will be displayed.
62
Lock
The “Lock” key is used to prevent access to 2020’s sensitive
options. Sensitive options are those which can affect 2020’s
readings. These include selecting a calibration memory, zeroing the
instrument and spanning the instrument. If any one of these
functions are selected when the instrument is locked, 2020 will
prompt you to unlock the instrument before you can access the
functions.
To lock 2020:
1. Press the ENTER key. Press “Disp” and then select
“Lock”.
2. You will be prompted for a password. If no password
has been entered, then press the ENTER key. If a
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Tutorial Session
password has been entered, enter the correct password
and then press the ENTER key.
3. If you want to enter a password, press “Chng” and
enter a password. The password can be up to 4
numerical characters. Press the ENTER key to accept
the password.
NOTE: If you change the password, make sure you record the setting.
Once the instrument is locked, there is no way to unlock it
without losing all your data.
4. Press “Lock” to lock 2020. The message “Lock is on”
will be displayed. If “Unlk ” is displayed, 2020 is already
locked.
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2020 Software Manual
Unlock
If you try to calibrate 2020 while it is locked you will see the
message “Error: LOCKED! Se e Disp”.
To gain access:
1. Press EXIT twice and then press “Disp”.
2. Press “Lock”, enter the password and press ENTER.
Once the password has been entered and verified, press
“Unlk” to unlock the instrument.
3. Press EXIT twice and continue with calibration.
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Detailed Operation
3
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Detailed Operation
General Information
2020 must be calibrated in order to display concentration in ppm or
mg/m³ units equivalent to the calibration gas. First, a supply of zero
air which contains no ionizable gases or vapors, is used to set 2020’s
zero point. Then, calibration gas, containing a known concentration
of a photoionizable gas or vapor, is used to set the sensitivity.
Occasionally clean ambient air will be suitable as zero air . Due to
2020’s sensitivity, outdoor air is usually unsuitable for calibration. For
best results, use a commercial source of zero grade air and a second
regulator. Zero air should have not more than 0.1 ppm total
hydrocarbons (THC).
If compound threshold limit values (TLVs) are exceeded, you should
use a gas bag for sampling and calibration.
To determine the TLV of the compounds contained in the calibration
gas, refer to the Material Safety Data Sheet (MSDS) supplied with
your calibration gas cylinder.
If you will be using a gas bag for calibration, you should obtain the
calibration kit (Part No. MX390033). The calibration kit contains a
regulator, a gas sampling bag and a gas bag adapter. See
Calibration Using a Gas Bag on page 73 for details.
NOTE: Disconnect 2020 from the AC adapter before beginning
calibration.
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2020 Software Manual
Calibration Using the Flow-Match
Regulator
Connecting the Flow -Match Regulator to
the Cylinder
WARNING
To connect the flow -match regulator to the gas cylinder:
Observe proper handling procedure for all gases! See Compressed
Gases on page 25.
1. Connect the regulator to the calibration gas cylinder.
If you are using a portable tank of calibration gas (Part
No. MX350012), connect the regulator (Part No.
MX350006) directly to the tank.
2. When the regulator is connected properly, you can read
the cylinder contents from the regulator gauge.
3. Connect the adapter tubing to the regulator.
70
Regulator
Open/Close Valve
Flow Rate
Regulator
Adapter Tubing
2020 Sample
Probe
Indicator
Contents
Gauge
Calibration
Gas Cylinder
Figure 11 Flow-Match Regulator
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Detailed Operation
Calibrating 2020 with the Flow -Match
Regulator
1. Ensure the short sample probe is connected to the 2020
inlet. If you are using the long probe for sampling, then
ensure the long probe is connected to 2020.
NOTE: Ensure the sample probe is free of any contamination as this
will effect the calibration
2. Press the ENTER key.
3. Select “Set”, “Cal” and then “Mem”.
4. Select the desired Cal Memory. 2020 has 15 Cal
Memories and can be calib rated with 15 different span
gases or response factors if required. Only one Cal
Memory can be used at a time. Each Cal Memory
stores a different response factor, zero point, sensitivity,
and alarm levels.
5. Select “Chng” and then “User”. Enter a name for the
calibration memory.
Press the ENTER key and enter a response factor
(RF). Refer to page 169 for a list of Response Factors.
If the compound is not listed or you are measuring gas
mixtures, then enter a value of 1.0. The concentration
detected by 2020 will be multiplied by the response
factor before it is displayed and logged.
6. Press the ENTER key and enter an alarm level for
STEL, TWA and PEAK.
7. Press ENTER and expose 2020 to a supply of zero air.
8. Select “Set”, “Cal” and “Zero”. Allow 2020 to set its
zero point.
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2020 Software Manual
NOTE: Do not set the flow rate too high.
9. Select “Set”, “Cal” and “Span”. 2020 asks for the span
gas concentration. Enter the known span gas
concentration, without pressing the ENTER key to
confirm it.
10. Insert the 2020 sample probe into the adapter tubing
from the regulator. See Figure 11.
11. Ensure the calibration gas cylinder is upright and open
the regulator by turning the valve counter clockwise.
Open the regulator until the ball is 1/8” from its rest
position.
12. Press the ENTER key. 2020 sets its sensitivity.
13. When the display reverts to the default display, 2020 is
calibrated and ready for use.
14. Remove the adapter tubing from the inlet and close the
regulator.
If you turn off 2020 in the middle of zeroing or spanning, the next
time you turn it on it will display a Cal status. This indicates that you
need to calibrate 2020.
NOTE: While the Cal status is active, all alarms are deactivated.
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Calibration Using a Gas Bag
Preparing the Calibration Gas Bag and the
Zero Air Bag
WARNING
Use the calibration kit (Part No. MX390033) as follows:
Detailed Operation
Observe proper handling techniques for all gases! See Compressed
Gases on page 25.
1. Connect the regulator to the calibration gas cylinder.
If you are using a portable tank of calibration gas,
connect the regulator (Part No. 600649) directly to the
tank.
If you are using a large cylinder of calibration gas, you
must obtain a high purity regulator as specified in
Support Equipment and Consumables on page 28.
Isobutyl ene in air is usually supplied with a standard
CGA 590 cylinder valve outlet. Obtain a regulator with
the matching fitting. Connect the regulator to the tank of
calibration gas. Tighten the regulator onto the tank with
a wrench. Do not over-tighten.
NOTE: Do not force the connection.
Do not use Teflon tape with CGA fittings. In general, these
fittings are designed for metal to metal sealing.
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2020 Software Manual
Do not use adapters to connect one CGA fitting to another type
of CGA fitting. If the regulator does not match the outlet on
your calibration tank, contact your specialty gas supplier.
2. Attach the knurled nut on the gas bag adapter to the
regulator. Finger-tighten the fitting.
Front
Back
Teflon
Ferrules
InsertGas
ToRegulator
or 2020
1/8"Nut
1/8"Adapter
Tubing
1/8"to3/16"
Union
BagTubeStub
Figure 12 Gas Bag Adapter
3. Loosen the knurled nut on the reducing union of the gas
bag adapter.
NOTE: Do not remove the nut from the union as the Teflon ferrules
contained inside the nut may be lost. See Figure 12.
4. Insert the tube stub from the gas bag into the knurled
nut. Tighten the knurled nut and ensure the tube stub is
secure. If the gas bag is not secure, ensure you have
inserted the tube stub far enough into the knurled nut.
Do not over-tighten the fitting.
NOTE: Over-tightening the Teflon ferrules will result in damage to the
ferrules!
5. The union should be connected to the gas bag adapter.
If it is not, then tighten the nut on the adapter tube to the
union.
74
6. Flush and fill the gas bag. See Using the Gas Bag on
page 168 for instructions.
7. Remove the knurled nut on the adapter tube from the
regulator.
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Detailed Operation
8. Repeat this procedure, if necessary, to prepare a bag of
zero air.
NOTE: Do not use the same gas bag or gas bag adapter for the bag of
zero air. You will contaminate the bag of zero air.
Calibrating 2020 with a Gas Bag
1. Disconnect the probe from the 2020.
2. Press the ENTER key.
3. Select “Set”, “Cal” and then “Mem”.
4. Select the desired Cal Memory. 2020 has 15 Cal
Memories and can be calibrated with 15 different span
gases or response factors if required. Only one Cal
Memory can be used at a time. Each Cal Memory
stores a different response factor, zero point, sensitivity,
and alarm levels.
5. Select “Chng” and then “User”. Enter a name for the
calibration memory.
6. Press the ENTER key and enter a response factor.
7. Press the ENTER key and enter an alarm level for each
mode.
8. Press the ENTER key and enter a respons e factor.
Refer to page 169 for a list of Response Factors.
If the compound is not listed or you are measuring gas
mixtures, then enter a value of 1.0. The concentration
detected by 2020 will be multip lied by the response
factor before it is displayed and logged.
9. Connect the supply of zero air. If you are using a gas
bag with zero air, open the bag and connect the gas bag
adapter to the inlet.
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2020 Software Manual
NOTE: Readings may fluctuate slightly as the gas bag empties. Do not
allow 2020 to evacuate the bag completely.
If 2020 is powered off in the middle of zeroing or spanning, it will
power on displaying a Cal status . This indicates that you need to
calibrate 2020. While the Cal status is active, all alarms are inactive.
10. Select “Set”, “Cal” and “Zero”. The 2020 sets its zero
point.
11. Select “Set”, “Cal” and “Span”. The 2020 asks for the
span gas concentration. Enter the known span gas
concentration, without pressing the ENTER key to
confirm it.
12. Open the bag and then connect the gas bag adapter to
the inlet. Press ENTER. 2020 sets its response factor.
13. When the display reverts to the default display, 2020 is
calibrated and ready for use. Remove the span gas bag
from the inlet.
76
Programming the Cal Memories
2020 has 15 Cal Memories and can be calibrated with 15 different
span gases or response factors if desired.
To program the Cal Memories:
1. If you will be calibrating directly from the portable
cylinder, connect a flow -match regulator (Part No.
MX350006) to each tank. You must use a separate
regulator for each compound to prevent cross
contamination.
If you are using gas bags, prepare the bags of
calibration gas as outlined in Calibration Using a Gas
Bag on page 73. Use a different gas bag and gas bag
adapter for each concentration and for each type of
calibration gas. You can use the same gas bag to zero
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Detailed Operation
all the Cal Memories, however, you must refill the bag
before zeroing each Cal Memory.
2. Select “Set”, “Cal” and “Mem”.
3. Select the desired Cal Memory (1 to 15) with the
“Next” and “Prev” keys.
4. Press “Chng” to change the parameters of the Cal
Memory. Select “U ser” or “Lib”.
5. If you selected “User”, enter the name, response factor
and alarm levels.
6. If you entered “Lib”, use the “Next” and “Prev” keys to
select the required library. See page 174 for a list of
Library entries.
NOTE: It does not matter which Cal Memory is selected or which
response factor is entered, 2020’s response is not specific to
any one compound. The reading displayed represents the total
concentration of all ionizable compounds in the sample.
7. Calibrate the instrument as described in Calibration
Using the Flow-Match Regulator on page 70. When
the calibration is completed, the calibration information
is automatically stored in the selected Cal Memory.
8. Repeat this procedure for each Cal Memory you need.
Whenever the instrument is calibrated, 2020 updates the selected
Cal Memory only. Each Cal Memory must be calibrated at least
once a day. Frequency of calibration will depend on ambient
conditions and instrument response. If ambient conditions change or
the response has drifted, a calibration must be performed for each
Cal Memory to ensure reliable operation.
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2020 Software Manual
Response Factors for Gases and
Vapors
General Information
In situations where only a single pure compound is present in air,
2020 should be calibrated with a standard of that specific compound
as span gas. 2020’s 15 Cal Memories can be used to store
calibration information for 15 different span gases.
The displayed reading will always be influenced by any other
photoionizable compounds present in the air sample.
NOTE: Even if 2020 has been calibrated with a specific compound, its
response is not specific and the presence of another ionizable
impurity may render the numerical result invalid.
It is often impractical to carry a range of different standards into the
field. Approximate results can be obtained by calibrating 2020 with
the recommended span gas and entering the appropriate response
factor. The response factor is based on the ratio of the response of
the specific compound to the response of the span gas. The
response factor multiplies 2020’s reading then displays and records
it.
78
Page 169 provides a list of response factors from which
approximations can be made for guidance purposes. Data
extrapolated from the use of response factors must be regarded as
interim and approximate only. This list should be used only for
concentrations up to 500 ppm of the specific compound, as response
factors change with concentration.
Using Response Factors
To use the response factors stored in your library:
1. Select “Set”, “Cal” and “Mem”.
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Detailed Operation
2. Select the desired Cal Memory (1 to 15) with the
“Next” and “Prev” keys.
3. Press “Set”, “Cal” and “Mem” and “Chng” to change
the parameters of the Cal Memory. Select “User” or
“Lib”.
4. If you selected “User”, enter the name, response factor
and alarm levels.
5. If you entered “Lib”, use the “Next” and “Prev” keys to
select the required library. See page 174 for a list of
Library entries.
6. Calibrate 2020 with zero air and 100 ppm isobutylene as
described in Calibration Using the Flow-Match
Regulator on page 70.
7. Expose 2020 to the sample. The displayed reading is the
approximate concentration of the specific compound.
The response factors on page 169 serve only as a guide to
concentrations measured by 2020.
Results are expected to be accurate to within +/-10 ppm or +/-25%
of the displayed result, whichever is greater. Accuracy of response
factors to other gases and vapors may differ from those listed on
page 169.
Manual Operation
As part of manual operation, you setup 2020 to monitor various
locations. Since each location may contain different compounds and
concentration ranges you can program a Cal Memory and the
associated response factor and alarm level for up to 15 different
applications. In this way you can sample numerous locations without
having to re-calibrate 2020 at each location.
Prepare a monitoring schedule for you application. Your schedule
should contain a list of sites that must be monitored and the Cal
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2020 Software Manual
Memory tha t must be used when monitoring the site. Also include
any reference information that will help you define the site and the
monitoring application. If you create your schedule using
spreadsheet software, you can later download 2020 data to a
computer and then copy it into the spreadsheet for further
calculations.
Once you have programmed 2020, and prepared a list of sites to be
monitored, you will move around to each location and manually log
data at each site.
To log data according to a monitoring schedule:
NOTE: It does not matter which Cal Memory is selected or which
response factor is entered, 2020’s response is not specific to
any one compound. The reading displayed always represents
the total concentration of all ionizable compounds in the
sample.
1. You must determine the number of calibration standards
that will be required to perform manual monitoring for
your application. Program and calibrate all the
calibration memories that you need. See Calibration
Using the Flow-Match Regulator on page 70 and
Programming the Cal Memories on page 76.
80
2. Ensure the 2020 is in PEAK mode. To change the
mode, press ENTER and select “Disp”. Press “Mode ”
and select PEAK.
3. Switch to manual operation. Press ENTER and then
“Log”. Select “Mode”. Use the “Next” and “Prev”
keys to scroll through the list. When Manual is displayed
press ENTER. When you switch between interval and
manual operation, the datalogger will be cleared. Press
“YES” to confirm your selection and clear the
datalogger. If you do not want to lose your previously
recorded data, press “NO”, then print or save the data
to disk before changing to manual operation. See
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Detailed Operation
Print on page 59 and Computer on page 90 for printing
and saving logged data.
4. The instrument status will change to “Loc ”.
5. Select the required Cal Memory for this location. Press
ENTER and select “Set”, “Cal” and then “Mem”. Use
the “Next” and “Prev” keys to select the desired Cal
Memory.
6. Press the ENTER key and locate the first site on your
schedule. The middle soft key is used to advance to the
next measurement when you are operating in manual
mode. Press the “Next” key. If you are not using
manual operation, the “Next” key is not shown.
7. The instrument status will change to “BkGd”. A
background measurement must be made. When you
have an accurate background, press “Next”. 2020 will
record the displayed concentration when you press the
“Next” key.
8. The instrument status will now be “Samp”. Take a
sample measurement. When you have an accurate
sample, press “Next”. 2020 will record the displayed
concentration when you press the “Next” key.
9. The instrument status will again be “Loc”. Go to the
next site on your schedule.
When you have completed your monitoring you can download the
contents of the datalogger to a computer and add the 2020 data to
your spreadsheet.
If you change from manual operation to an averaging interval, you
will lose the contents of the datalogger. Print or save the data to
disk before changing the interval. See
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2020 Software Manual
Print on page 59 and Computer on page 90 for printing and saving
logged data.
Preparing for Field Operation
Field Check List
When using 2020 for field operation, the following items should be
carried into the field to reduce or eliminate down time of the
instrument.
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Detailed Operation
If you are going to be in the field for a single 8-10 hour day, then you
should include the following accessories:
? Spare battery pack (Part No. MX350009)
? Spare UV lamp (Part No. MX350023)
? 2020 multi-tool (Part No. MX396012)
? Sample line (Part No. MX390006)
? Calibration kit(s) (Part No. MX390033)
? Calibration regulator (Part No. MX350006)
? Tank(s) of calibration gas (Part No. MX350012)
? Spare gas bag for zero air (Part No. MX396017)
? Gas bag adapter for zero air (Part No. MX396010)
? Supply of commercial zero air
? Spare inlet filters (Part No. MX396015)
? Dilution probe (Part No. MX350013)
? Spare charcoal filters for the dilution probe
(Part No. MX395064 or MX395067)
? Carrying case (Part No. MX350010)
? Instrument manual (Part No. MX350001)
? DC power cord (Part No. MX350004)
Table 3 Check List for Field Operation
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2020 Software Manual
If you will be in the field for more than one day you should include
the following additional items:
? AC adapter (Part No. MX350002 or MX396013)
? Cable kit (Part No. MX350011)
? Computer and associated cables
? Serial to parallel converter (Part No. MX380145)
Operational Check List
Before beginning field work, set up and calibrate 2020 for your
particular application.
To ensure the instrument is in working order before heading into the
field:
Table 4 Additional Field Items
84
1. Press the “Set” and “Clock” keys and ensure the
correct time is entered. Press the ENTER key and
ensure the correct date has been entered.
2. Ensure the battery pack is fully charged. If you are
unsure about the status of the battery, replace the
battery pack with one that is fully charged. See Battery
Charging on page 30.
3. Program and calibrate all the Cal Memories you need.
See Programming the Cal Memories on page 76.
4. After calibration is complete, sample the calibration gas
and the bag of zero air to ensure 2020 has been
calibrated correctly.
5. Select the correct operating mode. See
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Detailed Operation
Mode on page 62.
6. Reset the TWA accumulator, the STEL moving
average and the MAX. See STEL, TWA, MAX and
PEAK Operation on page 46.
You may want to delete all entries from the datalogger to avoid
confusion between different days’ data and to avoid running out of
space in the datalogger. See Edit on page 57.
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2020 Software Manual
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Connecting
4
Accessories
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Connecting Accessories
Printer
The printer must have a printing width of at least 65 characters and
must use fixed spaced fonts. The serial communication parameters
on 2020 have been fixed at 9600 baud, no parity, 8 data bits and 1
stop bit. Your printer must be able to match these settings.
If you are using a parallel printer, you will need the serial to parallel
converter (Part No. MX380145). See page 96 for details of
connecting and operating 2020 with a serial to parallel converter.
NOTE: 2020 is not classified for use in hazardous locations with a
printer.
To connect your instrument to a printer:
1. Turn 2020 off.
NOTE: You must turn the instrument off before connecting or
disconnecting the printer cable.
2. Connect the printer cable (Part No. MX350011) to the
I/O port on the back of the 2020 and then to the serial
port on the printer.
3. Turn 2020 on.
4. The serial communication parameters on 2020 have
been fixed. It communicates at 9600 baud, no parity, 8
data bits and 1 stop bit. You must set your printer
accordingly.
5. Use the “Grph” and “Tabl” keys as detailed in
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2020 Software Manual
If this arrangement does not produce the desired results, see Printer
Troubleshooting on page 142.
Computer
Print on page 59.
P rinter with25Pin,
M ale,Serial,Port
2020
2020
P rinter Cable
Figure 13 Connecting 2020 to a Serial Printer
2020 will send information stored in its datalogger to a computer.
This option may be used if you need to prepare reports based on
2020’s recorded data. This feature may also be used if you need the
recorded data in a format that can be imported into a spreadsheet or
database for further calculations.
NOTE: 2020 is not classified for use in hazardous locations with
computers.
You may need to keep more data than can be logged by 2020. If this
is the case you have two options: you may print the data before they
are deleted from the datalogger and keep the printed reports, or you
may store the data on disk for later use. You may not, however, load
data that have been stored on disk back into 2020.
In order to establish communication with 2020 and send data stored
in the datalogger to a computer, the computer must be set up to
emulate a terminal. In order to do this you will need a
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Connecting Accessories
communications software package that will allow you to transfer
data from 2020 to a computer. If you are using Microsoft®
Windows™, you do not need to purchase any separate software.
Instructions for downloading information to Windows’
HyperTerminal are provided below.
If you are already using another type of communication or terminal
emulation software package it is not necessary to use
HyperTerminal. Use your communications package to set up the
computer to receive data with 8 data bits, 1 stop bit and no parity at
the desired baud rate. Refer to the user’s manual, provided with
your software, for specific details.
Once the data have been transferred to HyperTerminal, they must
be saved to a floppy dis k or a hard disk. In order to manipulate the
data you must import the data either as a text file into a spreadsheet,
where they may be parsed and converted to numeric data, or into a
text editor or word processor where they may be viewed and edited.
Refer to the computer setup options to determine the baud rate, as
this value will depend on the computer. 2020’s baud rate can be set
from 1200 to 19200 to match the computer’s setting.
The instructions below will provide you with the most basic
information for using 2020 with communications software. Please
refer to the software user’s manual for specific details of operation.
If you are using Microsoft Windows you do not need to purchase
any separate software. You can use the HyperTerminal program
that is shipped with Windows.
In order to use these instructions, you must be familiar with
Microsoft Windows and it must be installed and running on your
computer. These instructions are based on HyperTerminal Version
1.1.
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2020 Software Manual
NOTE: As newer versions of HyperTerminal and Windows are released,
the exact names and contents of dialog boxes may change. Use
these instructions as a general guideline.
To initiate communications between 2020 and Windows:
1. Turn 2020 off.
NOTE: You must turn the instrument off before connecting or
disconnecting the printe r cable.
2. 2020 must be connected to a serial port. Use the printer cable
3. If the 2020 printer cable plugs directly into the port on the
(Part No. MX350011) to connect 2020 to one of the
computer’s serial ports. Remember which serial port you are
using as you will need this information when you set up
HyperTerminal. Nor mally you will use Com1 or Com2.
computer without the gender changer or the 9 to 25 pin
adapter, you are most probably connected to a parallel port.
You will need at least one of the adapter cables to connect
2020 to a serial port. To communicate with a parallel port, you
will need to use the serial to parallel converter (Part No.
MX380145).
92
4. Once all connections have been made, turn on the computer
and the instrument.
5. Start Windows and then start the HyperTerminal.
HyperTerminal will most likely be in the may be in the
Accessories Program Group. Its location will depend on how
you have set up Windows. Refer to your Windows
documentation for details.
6. HyperTerminal may prompt you to connect a modem. You do
not need a modem for this application, so press No, to close the
pop up window.
7. The Connection Description dialog box will open. Enter the
instrument name and select an icon. If you choose to save the
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Connecting Accessories
session after you have completed downloading the data, this
icon will then appear in the HyperTerminal group.
Figure 14 Connection Description Dialog Box
8. Press OK to accept the information.
9. The Connect To dialog box opens next. Select the serial port to
which you connected 2020 Press OK to move to the next
dialog box.
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10. The current properties of the selected serial port will be
Figure 15 Connect To Dialog Box
displayed. Enter 9600 as the baud rate (bits per second). This
sets the baud rate at which the computer will receive data from
2020.
NOTE: The baud rate setting of 9600 is being used here as an example.
In order for this setting to work, your computer serial port must
be set to send/receive at 9600 baud. If your comp uter serial
port is set to send/receive at a different baud rate, set the Speed
command and 2020 accordingly.
11. On 2020 the number of data bits has been fixed at 8, stop bits
has been fixed at 1. Parity has been set at None and the Flow
control is Xon/Xoff. Enter these values and then press OK.
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Connecting Accessories
Figure 16 Properties Dialog Box
12. Select the correct Baud Rate , Data Bits, Stop Bits, Parity.
Select Xon/Xoff for the Flow Control option. Leave the Parity
Check and Carrier Detect options off. Select OK to close the
dialog box and accept the settings.
13. Open the Transfer menu and select Capture Text. A “Captur e
Text” dialog box will appear. Type in the desired path and
filename for the data that are to be downloaded. Ensure the
path is correct.
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2020 Software Manual
14. Ensure the file name has a .txt extension. The .txt extension
15. Press Start. Select the Table Format option and then select
16. On 2020, press the ENTER key. Select “Log”, “Prnt” and then
17. Select a start time using the “Next” and “Prev” keys. Hold
Figure 17 Properties Dialog Box
will make it easier to use the downloaded data later.
OK. At the bottom of the screen the message, “Receiving
Data” is displayed.
select “Grph” or “Tabl”.
down the “Next” and “Prev” keys to scroll through the data
quickly.
96
18. Press the ENTER key, and select the stop time. All entries
between, and including, the start and stop entries will be sent to
the computer. The logged data will begin to appear on the
computer screen. It will be saved to the specified file as it
appears on the screen.
19. To terminate communications select Stop from the bottom of
the screen. This will close the text file.
The logged data can now be copied or cut to the Windows Clipboard
and pasted into a text editor, such as Windows’ Notepad, or into a
spreadsheet for analysis.
Refer to the Microsoft Windows User’s Guide for detailed
instruction on operation of HyperTerminal.
Serial to Parallel Converter
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Connecting Accessories
This device allows 2020, which is capable of serial communication,
to communicate with a parallel device. This will be most useful for
printing, as most printers utilize parallel communications.
The printe r must have a printing width of at least 65 characters and
must use fixed spaced fonts. The serial communication parameters
on 2020 have been fixed at 9600 baud, no parity, 8 data bits and 1
stop bit. Your converter must be set to match these settings.
DIP Switch Settings ConverterDIP Switches
The DIP switch settings are very important and must be set
correctly in order to correctly communicate with 2020. 2020 will
always be the serial device so the data flow direction will be serial to
parallel.
To configure the serial port of the converter:
1. Locate the DIP switches located on the side of the
converter.
Female Parallel Connector
to parallel printer using supplied cable
DIP Switches
Male DB-25Serial Connector
to 2020 using 2020 prin ter ca ble
PowerIndicator
AC Power
Jack
Figure 18 Layout of Serial to Parallel Converter
2. Determine the baud rate at which the converter will be
receiving data from the instrument. The value you set
here must ma tch 2020.
3. Use the first three DIP switches to set the baud rate to
9600. See Table 5.
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2020 Software Manual
Baud Rate SW1 SW2 SW3
9600 On Off On
Table 5 DIP Switch Settings for Baud Rate
4. Switch 4 sets the da ta bits. Off = 7 Bits. On = 8 Bits.
Set the data bits to 8.
5. Use Switches 5 and 6 to set the parity to none.
Parity SW5 SW6
None Off Off
Table 6 DIP Switch Settings for Parity
6. Switch 7 sets the Handshake mode. Off = Xon/Xoff.
On = DTR. Set the Handshake mode to Xon/Xoff.
98
7. Use switch 8 to set the data flow direction to serial to
parallel. Off = Serial to Parallel. On = Parallel to Serial.
8. Check your settings. It is imperative that you have the
correct settings or you will be unable to establish
communications. Your settings should match those in
Table 7.
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