ATI Technologies 2i Operation And Maintenance Manual

Aerosol Photometer

2i

Operation and Maintenance Manual

(This Page Intentionally Left Blank)

2 Aerosol Photometer - 2i 1800224 H.1

Contents

Chapters

CHAPTER 1

CHAPTER 2

CHAPTER 3

CHAPTER 4

Introduction and Precautions 7

Photometer Overview 16

Unpacking and Setting Up the Photometer 21

Know Your Equipment 25

Scope of Manual 7
Definitions 7
Definiciones 8
Définitions 8
Definitioner 9

定义 9
User Responsibility 10
Precautions 10
For Customers in Canada 12
For Customers in the USA 12
For Customers in Europe 14
For All Customers 15

Instrument Description 16
Filter Leak Testing: The Most Common Application 17
How the Photometer Operates 18

Theory of Operation 18
Sampling System 18
Light Scattering Chamber (LSC) 19
Capabilities 19
Input / Output features 19

Utility Requirements 20

Packing List 21
Unpacking 21
Installation 22
Before you begin 22
Connecting Electrical Power 22
Connecting the Scanning Probe 23
Connecting the Interface Ports 24

USB Port 24
Printer Port 24

Front Panel General Overview 25
Rear Panel General Overview 26
Scanning Probe Overview 27
Thermal Printer Overview 28
Function Keys 29
Sampling Ports 29

3 Aerosol Photometer - 2i 1800224 H.1

CHAPTER 5

CHAPTER 6

CHAPTER 7

CHAPTER 8

Operating the 2i: Basic Operation 30

Before You Begin 30
Basic Operation 31
Reporting Modes 34

Summary Mode 34
Monitoring 36
Continuous 38

Alarms Modes and Set Point 38

Alarm Set Point 38
Alarm modes 39

Icons 40

Software Reference 41

Software Description 41

Start-up Screen 41

Making Entries 42

Entering Numerical Values 42
Turning Options Flags On or Off 43

Using the Alphanumerical Keypad 43
General Screen Structure 44
Menu Structure and Options 45

Menu Structure 45

Run Mode Screen 46

Top Level Menu Options 47
Alarm Set Point 48
Alarms 49
Set 100% to Upstream Concentration 49

Instructions 50

Measuring the Upstream Aerosol 50

Accepting the Result 51

Aerosol Concentration Result Too Low 51

Aerosol Concentration Result Too High 52
Set Internal Reference 52
Use Previous 100% Settings 53
Re-establish Zero 53
Setup 54

Aerosol Noise Suppression 54

Reporting Functions 56

Date and Time 57

Display 58
Error Messages 59

Application Notes 61

Abbreviations List 61
Aerosol Correction Factors 61

Maintaining the Photometer 62

Definitions and Features 62
Recommended Scheduled Maintenance 63

Daily 63

4 Aerosol Photometer - 2i 1800224 H.1

Annually 63
Replacing the Main Power Fuses 64
Cleaning the Lint Screens 64

CHAPTER 9

APPENDIX A Contacting ATI 67

APPENDIX B Warranty 68
APPENDIX C Declaration of Conformity 70
APPENDIX D Specifications 71

APPENDIX E Maintenance and Spare Items 72
APPENDIX F Accessories 73

APPENDIX G Manual Revision History 74
APPENDIX H Español – Precauciones 75
APPENDIX I Français – Précautions 77
APPENDIX J 中文 – 预防 79
APPENDIX K Svenska – Försiktighetsåtgärder 81

Troubleshooting Guide 65

Instrument Will Not Power Up 65
Error E1 – Sample Line Blockage 65
Error E2 – Out of Temperature Range 66
Error E3 – Photomultiplier Tube (PMT) Inoperable 66

For Technical Support or Application Questions 67
For Customer Service 67

Main Unit Physical Characteristics 71
Operational Requirements 71
Operating Conditions 71
Aerosol Detection 71
Data Output Formats 71
Outputs 71

Scanning Probe 73
Thermal Printer Module (Optional) 73
Wheeled Transport Case (Optional) 73

Figures

Figure 1: Front Panel Overview 25
Figure 2: Rear Panel Overview 26
Figure 3: Scanning Probe Overview 27
Figure 4: Thermal Printer Overview 28
Figure 5: Basic Operation of the 2i Aerosol Photometer 31
Figure 6: Sample Summary Mode Reporting Ticket 36
Figure 7: Sample Monitoring Mode Data Output 37
Figure 8: Start-up Screen 42
Figure 9: Alphanumeric Keypad 44
Figure 10: Screen Structure 44
Figure 11: Overview of the 2i Menu Structure 45
Figure 12: Running Mode Screenshot 46

5 Aerosol Photometer - 2i 1800224 H.1

Figure 13: Main Menu Screenshot 47
Figure 14: Setting the Alarm Set Point Screenshot 48
Figure 15: Setting the Alarms Screenshot 49
Figure 16: Set 100% to Upstream Concentration Initial Screenshot 50
Figure 17: Set 100% to Upstream Concentration Measurement Screenshot 51
Figure 18: Set 100% to Upstream Concentration Final Screenshot 51
Figure 19: Select Reagents Screenshot 52
Figure 20: Set Internal Reference Screenshot 52
Figure 21: Setup Menu Screenshot 54
Figure 22: Aerosol Noise Suppression Screenshot without Probe 55
Figure 23: Aerosol Noise Suppression Screenshot with Probe 55
Figure 24: Reporting Functions Screenshot 56
Figure 25: Date and Time Menu Screenshot 57
Figure 26: Set Time Screenshot 57
Figure 27: Set Date Screenshot 57
Figure 28: Set Date Format Screenshot 58
Figure 29: Display Setup Screenshot 58
Figure 30: Display Setup Screenshot 58
Figure 31: Error Message Screenshot 59

Tables

Table 1: Serial Port Settings ............................................................................................. 24

Table 2: Summary Reporting Mode Ticket ...................................................................... 35

Table 3: Monitoring Reporting Mode Ticket.................................................................... 37

Table 4: Icons Description ................................................................................................ 40

Table 5: Running Mode Options....................................................................................... 46

Table 6: Main Menu Options ............................................................................................ 47

Table 7: Alarm Set Point Options List .............................................................................. 48

Table 8: Alarm Selection Options List ............................................................................. 49

Table 9: Internal Reference Set Point ............................................................................... 52

Table 10: Noise Suppression Options List........................................................................ 55

Table 11: Reporting Mode Options List ........................................................................... 56

Table 12: Date and Time Menu Options List ................................................................... 58

Table 13: Date and Time Menu Options List ................................................................... 59

Table 14: List of Operator Error Messages ....................................................................... 60

Table 15: Abbreviations List ............................................................................................ 61

Table 16: Aerosol Correction Factors List........................................................................ 61

Table 17: Replacement Fuses for the 2i ............................................................................ 64

Table 18: Maintenance and Spare Items ........................................................................... 72

Table 19: Accessories List ................................................................................................ 73

Table 20: Manual Revision History .................................................................................. 74

6 Aerosol Photometer - 2i 1800224 H.1

CHAPTER 1

Introduction and Precautions

Scope of Manual

These instructions cover the specifications, features,

operation, maintenance, and troubleshooting for the 2i

Digital Aerosol Photometer.

These instructions also contain important information

required for the safe operation of the instrument.

Before using this instrument, all personnel associated

with the operation must read and understand this

entire manual and become familiar with the

terminology.

Failure to follow the specified procedures and

precautions could result in PERSONAL INJURY or

DAMAGE to the unit.

Definitions

The following defines the warnings, cautions and

notes used throughout this manual.

Warning

Indicates a strong possibility of severe personal injury or
death if instructions are not followed.

Caution

Indicates a possibility of equipment damage if
instructions are not followed.

Note

Indicates that helpful information is provided.

7 Aerosol Photometer - 2i 1800224 H.1

Definiciones

Las siguientes anotaciones definen los peligros,

cuidados y notas usadas a lo largo de este manual.

Advertencia

Indica una fuerte probabilidad de serias lesiones
personales o muerte si no son seguidas las instrucciones.

Cautela

Indica una posibilidad de daños al equipo si no son
seguidas las instrucciones.

Nota

Indica que se suministra información útil.

Définitions

Les informations suivantes, définissent les symboles,

précautions et notes présentes dans ce manuel.

Avertissement

Indique la possibilité de dommages corporels graves
pouvant entraîner la mort, si les instructions ne sont pas
suivies.

Attention

Indique la possibilité d’endommager l’équipement si les
instructions ne sont pas suivies.

Note

Indique que des informations utiles sont fournies.

8 Aerosol Photometer - 2i 1800224 H.1

Definitioner

Efterföljande text beträffande varningar, varsamhet

och noteringar är genomgånde för hela manualen.

Varning

Innebär att allvarlig personlig skada eller död kan inträffa
om instruktionerna inte följs.

Varsamhet

Innebär att skador på utrustning kan inträffa om
instruktionerna inte följs.

Notera

Innebär att användbar information ges.

定义

下面定义了在这本说明书中所有的警告,小心,注意.

警告

表示如果不按照指导操作.引起个人人身伤害甚至死亡
的可能性很高.

小心

表示如果不按照指导操作.可能会损害仪器

注意

表示提供了有用的信息.

9 Aerosol Photometer - 2i 1800224 H.1

User Responsibility

The user must:

1. read and comprehend the information contained in
this manual before using the product;

2. have an understanding of the electrical and
mechanical system principles used in the
operation of this photometer;

3. be trained in the proper use of electro-mechanical
equipment;

4. properly use this product for the intended purpose
and follow all regulations and procedures that
apply to the location where this product is used;

5. maintain the product as specified in this manual;

6. maintain in proper working condition any other
equipment associated with the operation of this
product.

Precautions

Read and understand all instructions. Failure to follow all
instructions listed below may result in electric shock, fire
or serious personal injury. The warnings, cautions, and



instructions discussed in this operation and maintenance
manual cannot cover all possible conditions and situations
that may occur. It must be understood by the operator that
common sense and caution are factors which cannot be
built into this equipment, but must be supplied by the
operator.

Warning – General Safety Rules

10 Aerosol Photometer - 2i 1800224 H.1

Caution – Shipping Hazard

When returning a 2i-N for service, the end user must
remove the potentially contaminated sampling train prior
to shipping the instrument. Refer to the 2i-N addendum for
the proper procedure.

Caution –Serviceability

There are no user-serviceable parts inside the instrument.
Refer all repair and maintenance to a qualified factory­authorized technician.

Caution - Maintenance



Incorrect fuse replacement may damage internal
components of the photometer.

Warning – Electrical Hazard

 Electrical hazard that can cause severe injury or death.

 The electrical housing contains multiple high voltage

sources. Do not insert any objects under the cover

Warning – Damaged Equipment

Do not operate the equipment with a damaged cord or

plug or after the equipment has malfunctioned, or
been damaged in any way.

 Contact ATI Service Department for advice on

examination, repair, electrical or mechanical
adjustment.

 Failure to follow the prescribed procedures may result

in a hazardous situation.

11 Aerosol Photometer - 2i 1800224 H.1

For Customers in Canada

Note – Regulatory Information

This Class B digital apparatus complies with Canadian
ICES-003.

Cet appareil numérique de la Classe B est conforme à la
norme NMB-003 du Canada.

For Customers in the USA

Declaration of Conformity

Trade Name: ATI
Model Number: 2i
Responsible Party: Hamilton Associates Inc.
Address: 11403 Cronridge Drive
Owings Mills, MD 21117
USA
Telephone No: 410-363-9696

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2)
this device must accept any interference received, including
interference that may cause undesired operation.

12 Aerosol Photometer - 2i 1800224 H.1

Note – Regulatory Information

This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed in
accordance with the instructions, may cause harmful
interference to radio communications. However, there is
no guarantee that interference will not occur in a particular
installation. If this equipment does cause interference to
radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the
following measures:

 Reorient or relocate the receiving antenna
 Increase the separation between the equipment and

receiver

 Connect the equipment into an outlet on a circuit

different from that to which the receiver is connected

 Consult the dealer or an experienced radio/TV

technician for help

13 Aerosol Photometer - 2i 1800224 H.1

For Customers in Europe

Declaration of Conformity

Application of Council Directive(s): 2004/108/EC

Standard(s) to which conformity is declared:
EN 55011:2007; EN61000-3-2: 2005; EN61000-3­3:1995:A1 (2001):A2 (2005); EN 61326-1:2006

Manufacturer's Name: Air Techniques International
Manufacturer's Address: 11403 Cronridge Drive

Type of Equipment: Measurement Instrument
Model Number: 2i Photometer
Year of Manufacture: 2012

I, the undersigned, hereby declare that the equipment
specified above conforms to the above Directive(s)
and Standard(s).

Place: _Air Techniques International______________

Owings Mills, MD 21117

Signature: _______________

Full Name: _Eric Hanson_______________________

Date: __23 Apr 2012___________________________

14 Aerosol Photometer - 2i 1800224 H.1

For All Customers

Disposal of Old Electrical & Electronic Equipment

will be accepted free of charge. This symbol is only
valid in the European Union. If you wish to discard
this product please contact your local authorities or
dealer and ask for the correct method of disposal.

This product shall not be treated as household waste.
Instead it shall be handed over to the applicable
collection point for recycling of electrical and
electronic equipment. By ensuring this product is
disposed of correctly, you will help prevent potential
negative consequences for the environment and
human health, which could otherwise be caused by
inappropriate waste handling of this product. The
recycling of materials will help to conserve natural
resources.

For more detailed information about recycling of this
product, please contact your local Civic Office, your
household waste disposal service or the Company
where you purchased this equipment.

This symbol on the product and / or
accompanying documents means that
used electrical and electronic products
should not be mixed with general
household waste. For proper
treatment, recovery and recycling,
please take this product(s) to
designated collection points where it

15 Aerosol Photometer - 2i 1800224 H.1

CHAPTER 2

Photometer Overview

Instrument Description

The 2i is a forward light-scattering, linear digital
photometer. It operates on 100 to 240 Volts, 50 or 60
Hz, adjusting automatically. It’s most basic function is
to sample air or other gases and report the mass
concentration of particulates in the sample. The
primary application for the 2i is integrity/leak testing of
HEPA/ULPA filtration systems.

The 2i is a compact and lightweight instrument. The
instrument case is constructed of rugged die cast
aluminum. The pressure-sensitive keypad and large,
bright LCD display and indicators provide ease of
operation and readability. The auto-ranging and one­step zeroing features assure the accuracy of all
readings.

Using the 2i is extremely intuitive through the use of a
basic menu structure. Operation of the instrument is
simple and straight forward. Use of the fully
compatible iProbe affords full unit control from the
scanning probe. The 2i provides easy access to real­time results via USB or optional printer, while
remaining versatile enough to accommodate special
testing needs that have become commonplace in
today’s filter testing industry.

When all of these elements come together as they
have in the 2i, the testing process ceases to be a
training intensive exercise and becomes a “set and
forget” secondary routine performed as part of the
daily work requirements in clean room testing.

16 Aerosol Photometer - 2i 1800224 H.1

Filter Leak Testing: The Most Common
Application

The most common application of the Aerosol
Photometer 2i is to detect leaks in high efficiency
filtration systems (HEPA & ULPA). To validate the
integrity of a filtration system, a known challenge
agent consisting of an airborne test aerosol is
generated and introduced upstream of the filter. The
challenge agent provides particulate matter upstream
of the filter to allow measurements downstream of the
filter.

The test aerosol is introduced into the upstream side
of the filter(s) as far from the filters as is practical to
insure adequate mixing. Ideally, a distance of 10 duct
diameters upstream is considered the minimum. A
sample of the aerosol-air mixture should be taken
from the upstream side, close to the center of the
filter/filter bank. This sample is used to establish a
100% base line for the upstream concentration. The
2i is adjusted as described in the Operating Section to
set the 100% reading and the stray light is adjusted
automatically. The stray light adjustment
compensates for light reflection off internal surfaces of
the scattering chamber. After these adjustments have
been made, the 2i instrument is ready to check for
filter leaks/integrity downstream.

The filter test is performed with the use of the
scanning probe. The filter and the perimeter of the
filter pack should be scanned by passing the probe in
slightly overlapping strokes so the entire area of the
filter is sampled. The end of the probe should be held
one inch from the filter surface. Separate passes
should be made around the entire periphery of the
filter, along the bond between the filter pack and the
frame, and around the seal of the filter. Readings on
the meter will indicate percent of penetration.

The display indicates the percent of leakage through
or around the filter. The iProbe is supplied with the
industry standard rectangular, blue isokinetic nozzle.
This nozzle is used for fast scanning and is accepted
by many standards, including NSF 49-2008.

17 Aerosol Photometer - 2i 1800224 H.1

Other optional probes are available, a round, black 1
inch (25 mm) in diameter nozzle, which complies with
NSF (National Sanitation Foundation) Standard 49­1992, and a round, red, isokinetic nozzle. The
isokinetic nozzles are designed for media face
velocities of 90 +/- 20 feet per minute (fpm) when
using a 1 cfm (28.3 L/min) sample rate.

How the Photometer Operates

Theory of Operation

When air or gas is drawn through the instrument,
particulate matter in the sample passes through the
focal point of the scattering chamber. Particles
scatter light which is detected by the photomultiplier
tube, which converts the light into an electrical signal.
The signal is amplified and digitized, then analyzed by
a microprocessor to determine the intensity of the
light scattered by the signal. This signal is then
compared to a known reference signal to provide an
output that is normalized to the reference response.

A photometer is ideally suited to detect particulate
matter in air or gas, reporting the mass concentration
encountered on the unit display. Particles from less
than 0.1 micron to approximately 600 microns can be
readily detected by the 2i. Since the photometer
reports concentration of particulate matter, many
applications are possible.

18 Aerosol Photometer - 2i 1800224 H.1

Sampling System

A vacuum pump in conjunction with a flow meter,
onboard sensors and closed feedback loop provides a
constant volumetric sample flow rate of 1 cfm (28.3
liters per minute). The 2i uses an oil-free, dual head,
diaphragm pump with a direct-coupled DC motor.

Solenoid actuated valving directs the airflow through
the sampling system to the scattering chamber from
three possible sources. The CLEAR position directs
particle free air from an internal 0 REFERENCE filter
to the scattering chamber for zeroing the instrument.
The UPSTREAM position permits sampling of the air
above the filter being challenged, and the
DOWNSTREAM position permits sampling of the air
that penetrates the filter.

Light Scattering Chamber (LSC)

The scattering chamber is not only an integral part of
the sampling system; it is a major component in itself.
The scattering chamber is a complex electro-optical
unit that consists of a pair of hollow cones connected
at the apexes. A pair of collimating lenses first
straightens the light emerging from the light source,
and then focuses it at the center of the sampling
cone. An aperture forms a dark cone around the
photomultiplier, preventing light from arriving directly
on the photomultiplier. A condensing lens opposite
the LED source focuses light scattered into this dark
cone onto the photomultiplier tube.

Capabilities

The Aerosol Photometer 2i will measure percentage
leakage or absolute aerosol concentration. By using
a 100% baseline of 100 micrograms per liter of
aerosol, it is possible to directly read the
concentrations of aerosols.

Note

Before attempting to operate this unit, become familiar
with the features and functions.

Input / Output features

Alarms:

The 2i, when used in conjunction with the iProbe,
provides the user three sensory alarms: audible,
visual, and vibratory. When a reading exceeds the
user selected alarm point the display will turn red, a
tone will sound, and the iProbe will vibrate, if enabled.

19 Aerosol Photometer - 2i 1800224 H.1

Data Output:

Leakage data is sent out the unit’s USB port. This
data may be logged using contemporary data
acquisition software in real-time. Multiple types of
data formatting are available to satisfy a wide range of
applications (see “Reporting Modes” page 34 for more
details). A “Hard Copy” of the data can also be printed
using the optional printer accessory when “Summary”
reporting mode is selected.

Utility Requirements

Power

The 2i is equipped with a “Universal AC” power
supply capable of handling 100 to 240 VAC, 50 or 60
Hz. A line power conditioner and surge protector is
recommended.

Ambient Air Conditions

While the instrument was design to be operated
through a wide range of environmental conditions, we
recommend its use in a controlled environment where
the temperature is between 5°C and 50°C (41°F to
122°F Fahrenheit) and the relative humidity is
between 5% and 95% non-condensing.

Note

A dedicated power line is recommended for stable
machine operation.

20 Aerosol Photometer - 2i 1800224 H.1

CHAPTER 3

Unpacking and Setting Up the
Photometer

Packing List

The 2i ships complete, ready to install and operate.
Any additional accessories purchased on the same
order will be listed as separate line items on the
shipment packing list. Please confirm receipt of all
line items prior to commissioning of the instrument.

Shipping with the standard 2i will be the following.
Individual items may be packaged separately or
installed:

 Sturdy Shipping instrument case
 “Operation and Maintenance” Manual
 Calibration Report
 iProbe Scanning Probe with umbilical
 12 feet of clear “Upstream” sampling tube
 One set of spare ‘O’-rings and lint screen
 Power Cord (NEMA 5-15 125V or CEE 7/4

“Schuko” 250V configuration)

 NSF 49:2008 Isokinetic (blue) rectangular

nozzle

Unpacking

21 Aerosol Photometer - 2i 1800224 H.1

Wherever possible, packing materials should be
retained for storage or future shipment and
transportation needs.

After unpacking, if anything is missing or appears to
be damaged, contact ATI Customer Service
immediately at [phone] (see “Contacting ATI”
page 67).

Installation

Before you begin

Warning

If the unit is used in a manner not specified within the
user’s manual, the protection offered by the equipment
may be impaired.

You will need the following items to set up the Aerosol
Photometer Model 2i

 Electrical outlet (100 VAC to 240 VAC)
 2i Scanning Probe or PVC Sampling Tube
 5°C to 50°C ambient temperature
 Less than 95% RH, non-condensing.

Note

High ambient temperatures may create instability in the
readings.

Connecting Electrical Power

Voltage and current requirements for the Aerosol
Photometer Model 2i are:

 100 to 240 VAC, 2 amps

The Aerosol Photometer automatically adjusts to
operate at the correct AC voltage for the destination
country (given this voltage is within the specifications
described in “APPENDIX D Specifications page 71).
This voltage is noted on a label attached to the back
panel of the instrument. The power cord contains a
plug which is specifically adapted to the destination
country.

You are responsible for plugging the power cord into
a matching receptacle. To connect the Aerosol
Photometer to electrical power, do the following:

22 Aerosol Photometer - 2i 1800224 H.1

1. Check to make sure the Aerosol Photometer is

turned off. (Refer to Figure 2: Rear Panel Overview,
for the location of the power switch.)

2. Plug the power cord into a matching power outlet.

Warning

Before connecting the power cord to the power outlet,
make sure the cord has not been cut or otherwise damaged
during shipment.

Connecting the Scanning Probe

If using the Aerosol Photometer 2i with the Scanning
Probe, you should first connect the iProbe to the
umbilical. To do so, connect the umbilical’s electrical
connector to the 7-pin connector on the end of the
probe. Connect the aerosol sampling line quick­connect fitting to the quick-connect connector on the
butt of the probe (see “Scanning Probe Overview”
page 27 for the probe description).

Note

The two pneumatic quick-connect fittings are not
interchangeable; the smaller one must be connected to the
iProbe, while the larger one must be connected to the 2i
base unit.

Once the umbilical is connected to the scanning
probe, connect the other end to the base unit.
Connect the umbilical’s electrical connector to the 7­pin connector on the front panel of the 2i. Connect the
aerosol sampling line quick-connect fitting to the
quick-connect port of the photometer marked
“DOWNSTREAM” (see “Front Panel General
Overview” page 25 for the front panel component
description).

Note

Always check the lint screen located on both sampling
ports before instrument use (see “Maintaining the
Photometer” page 63 for the procedure).

23 Aerosol Photometer - 2i 1800224 H.1

When using the iProbe with the 2i, the probe should be
connected to the photometer before the power is turned on
if possible. Otherwise the iProbe display may show the
following message until the main unit has reached the
running mode:

“Waiting for User to complete current Base operation”

Connecting the Interface Ports

The 2i comes equipped with two standard Interface
Ports: a USB port and a printer port.

USB Port

The USB port is intended for interface with a
computer to provide serial data acquisition capability.
An industry standard USB Type ‘A’ Male to Type ‘B’
Male cable is required. The serial port connection
settings are listed in the following table.

Table 1: Serial Port Settings

Setting Value
Transfer Speed 9600
Data Bits 8
Stop Bits 1
Parity Control N
Flow Control None

Note

24 Aerosol Photometer - 2i 1800224 H.1

Printer Port

A 5-pin mini-DIN circular connector provides the
interface for the optional thermal printer. The
connector is keyed to prevent improper connection.
To connect, orient the arrow toward the top and insert
the connector in the receptacle.

Note – Port Usage

Do not use the Printer Port with equipment other than
those designed and supplied by ATI. Damage to the
equipment might result from such action

CHAPTER 4

Know Your Equipment

Front Panel General Overview

Figure 1: Front Panel Overview

LCD Display

Upstream

Sample Port

Downstream

Sample Port

Valve Selection with

LED Indicator

iProbe Connector

Description Function
LCD Display The color LCD display is the primary interface with the 2i.

During operation, percent leakage readings are displayed as
well as icons informing the user of the selection and status of
alarms, selections and connected peripherals.

Function Keys The function keys are used to access the settings and

operating parameters with the menu structure.
Valve Selection
with LED Indicator
Upstream Sample
Port
Downstream
Sample Port
iProbe Connector

Pressing one of the buttons will select the port as the source of

aerosol and a blue LED will indicate the selection.

Connects to the sample tubing that is used to measure the

upstream aerosol concentration.

Connects to the sample tubing that is used to measure the

downstream aerosol concentration.

A 7-pin circular connector with bayonet lock provides the

electrical connection for the scanning probe.

Function

Keys

25 Aerosol Photometer - 2i 1800224 H.1