Bacharach PCA2 Operating Manual

Portable Combustion Analyzer

Instruction 24-9448

Operation & Maintenance

Rev. 4 - July 2009

Product Leadership • Training • Service • Reliability

WARRANTY

Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material
and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications. Bacharach’s
liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at Bacharach’s option,
of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.’s
reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given
by Buyer to Bacharach Inc. within two (2) years after the date of delivery of this Product by Bacharach, Inc.
The Oxygen (O2) sensor has a limited warranty of one (1) year. Routine service and calibration are excluded
from this warranty.

Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach’s liability and Buyer’s
remedy under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach,
to the replacement of this Product or parts thereof that are defective in title.

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY
AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IM­PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY
OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT ARIS­ING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be limited
to those provided herein to the exclusion of any and all other remedies including, without limitation incidental or
consequential damages. No agreement varying or extending the foregoing warranties, remedies or this limita­tion will be binding upon Bacharach, Inc. unless in writing, signed by a duly authorized officer of Bacharach.

Register Your Warranty by Visiting

www.bacharach-inc.com

Notice:

Product improvements and enhancements are continuous, therefore the specifications and information
contained in this document may change without notice.

Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in
connection with the furnishing, performance, or use of this material.

No part of this document may be photocopied, reproduced, or translated to another language without the prior
written consent of Bacharach, Inc.

Copyright © 2006, Bacharach, Inc., all rights reserved.
BACHARACH is a registered trademark of Bacharach, Inc. All other trademarks,
trade names, service marks and logos referenced herein belong to their respective companies.

A

Instruction 24-9448

Contents

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 PCA 2 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

1.2 Sales Combo & Model Configurations . . . . . . . . . . . . . . . . . . . . . . 1-2

1.3 Features & Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

1.4 Operational Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

1.5 Connector Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

1.5.1 Probe Connections (Gas, Pressure, T-Stack) . . . . . . . . . . . .1-6

1.5.2 T-AIR (Primary Air Thermocouple) . . . . . . . . . . . . . . . . . . .1-6

1.5.3 POWER (AC Adapter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

1.5.4 ∆P (Differential Pressure) . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

1.5.5 USB (Computer Interface) . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

1.5.6 IrDA (Printer Interface) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

1.5.7 OPT (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

1.6 Front Panel Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

2 Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.2.1 Installing or Replacing Batteries . . . . . . . . . . . . . . . . . . . . .3-1

3.2.2 Using the AC Power Adapter . . . . . . . . . . . . . . . . . . . . . . . .3-2

3.3 Connecting the Probe and Hose Assembly . . . . . . . . . . . . . . . . . . .3-2

3.4 Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.5 Fuel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.6 Temperature Units Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.7 Pressure Units Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.8 Pollution Units Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

3.9 Date Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.10 Time Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.11 O2 Reference Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

3.12 Print Pressure Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

3.13 Zoom-Display Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

3.14 Battery Charger Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13

3.15 Logging Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

3.16 Button Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

3.17 Test ID Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15

3.18 Username. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17

3.19 Language. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

3.20 Cal Reminder Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20

3.21 Run/Hold Screen Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21

Instruction 24-9448

i

Contents

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Operating Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

4.2 Turning ON the Analyzer and Warm Up . . . . . . . . . . . . . . . . . . .4-2

4.3 Selecting a Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.4 Sampling Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.5 Performing a Combustion Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.6 Pressure Label Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

4.7 Temperature Measurement Label . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.8 Making a Draft / Pressure Measurement . . . . . . . . . . . . . . . . . . 4-9

4.9 Saving Test Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.10 Ending a Combustion Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11

4.11 Emptying the Water Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11

4.12 Turning OFF the Analyzer & Purging . . . . . . . . . . . . . . . . . . .4-12

4.13 Low Battery Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

4.14 Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13

4.14.1 Turning ON Data Logging . . . . . . . . . . . . . . . . . . . . . . . .4-14

4.14.2 Setting the Logging Interval and Duration . . . . . . . . . . .4-15

4.14.3 Starting the Data Logging Process . . . . . . . . . . . . . . . . .4-16

4.14.4 Ending the Data Logging Process . . . . . . . . . . . . . . . . . .4-17

4.15 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

4.15.1 Recalling Combustion Test Data . . . . . . . . . . . . . . . . . . .4-18

4.15.2 Recalling Logged Test Data . . . . . . . . . . . . . . . . . . . . . . .4-19

4.15.3 Clearing Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

4.16 Downloading Stored Data to a Computer . . . . . . . . . . . . . . . . . .4-21

4.16.1 PCA 2 Data Recovery Program Installation . . . . . . . . . 4-22

4.16.2 Computer to PCA 2 Connection & USB Device

Driver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

4.16.3 Recovering Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

4.17 Importing Saved Data Into a Spreadsheet . . . . . . . . . . . . . . . . . .4-29

4.18 Printing Test Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31

5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Smart Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

5.2 Starting a Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

5.3 Pressure Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.4 T-Stack Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.5 T-Air Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.6 CO-LO Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.7 SO2 Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10

5.8 NO Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

5.9 NO2 Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

5.10 CO-HI Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13

ii

Instruction 24-9448

Contents

6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1 PCA 2 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.2 Water Trap / Filter Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.2.1 Emptying the Water Trap Chamber . . . . . . . . . . . . . . . . . 6-6

6.2.2 Replacing the Filter Element . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.3 Smart Sensor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

6.4 Sensor Only Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

6.5 Nitric Oxide Sensor Battery Replacement . . . . . . . . . . . . . . . . . .6-10

6.6 Thermocouple Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-11

6.7 Pump Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13

6.8 Cleaning the Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 Analyzer Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2 Error Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

7.3 Error Messages Displayed After Warm-Up . . . . . . . . . . . . . . . . . .7-2

7.4 Diagnostics and Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

8 Parts & Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

8.2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.3 Service Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Instruction 24-9448

iii

Contents

Notes:

iv

Instruction 24-9448

Introduction

1 Introduction

1.1 PCA 2 General Description

The PCA 2 is a commercial-grade hand-held combustion and emissions
analyzer designed for on-demand sampling of light industrial, institu­tional, commercial and residential furnaces, appliances, and boilers. The
basic instrument is supplied with a probe and hose assembly, instruction
manual, factory calibrated smart sensors, 4 'A A' alkaline batteries, Data
Download Software with USB cable and carrying case.

Because of the PCA 2’s ability to measure up to four gases simultaneously,
it is the perfect tool for service technicians, inspectors and boiler contrac­tors who need to determine combustion efficiency, excess air, stack gas O2
and CO levels, stack temperature, draft, and differential pressure. The
analyzer can also directly measure and display NO, NO2 and SO2 with the
installation of the appropriate sensors. Combustion efficiency calculations
can be conducted for the following fuels: natural gas, oil #2, oil #4, oil #6,
propane, coal, wood, kerosene, bagasse, and digester gas. A large backlit
graphical display shows up to eight combustion test values simultaneously,
and includes a zoom capability that provides an extra large display.

Smart sensor technology allows a new sensor to be installed in the field
without having to calibrate the analyzer before use. New and innovative
probe and analyzer designs allow the PCA 2 to be easily serviced, thus
lowering the cost of ownership.

Advanced data storage and communication features allow the operator
to store up to 500 individual combustion test records, which can later be
recalled for viewing, printing, or downloading to a personal computer. In
its data logging mode, the analyzer can store an additional 500 data logged
records.

An optional AC power adapter allows the analyzer to run continuously for
data logging purposes.

The optional sample conditioning probe is recommended when measuring
NO2 and SO2 to ensure the highest degree of measurement accuracy.

Instruction 24-9448 1-1

Introduction

1.2 Sales Combo & Model Configurations

Sales Combo 24-8350 24-8351 24-8352

Sales Combo (Kit) 24-8370 24-8371 24-8372

Model Type 225 235 245

PCA2 Only Part Number 24-7301 24-7302 24-7303

Measurements

Oxygen (O2)

Stack Temperature

Primary / Ambient Air Temperature

Carbon Monoxide Low (CO

Low

)

Pressure / Draft

Carbon Monoxide High (CO

High

)

Nitric Oxide (NO)

Nitrogen Dioxide (NO2)

Sulfur Dioxide (SO2)

Calculations

Combustion Efciency

Excess Air

Carbon Dioxide (CO2)

NOx (NOx = NO + NO2)

NOx referenced to %O

CO referenced to %O

NO referenced to %O

NO2 referenced to %O

SO2 referenced to %O

2

2

2

2

2

3 3 3

3 3 3

3 3 3

3 3 3

3 3 3

3

3

3 3 3

3 3 3

3 3 3

3 3 3

3

Refer to Section 8.2 for a listing of standard and optional accessories.

Instruction 24-94481-2

Introduction

Sales Combo 24-8353 24-8354 24-8355

Sales Combo (Kit) 24-8373 24-8374 24-8375

Model Type 255 265 275

PCA2 Only Part Number 24-7304 24-7305 24-7306

Measurements

Oxygen (O2)

Stack Temperature

Primary / Ambient Air Temperature

Carbon Monoxide Low (CO

Low

)

Pressure / Draft

Carbon Monoxide High (CO

High

)

Nitric Oxide (NO)

Nitrogen Dioxide (NO2)

Sulfur Dioxide (SO2)

3 3 3

3 3 3

3 3 3

3 3 3

3 3 3

3 3

3

3 3

Calculations

Combustion Efciency

Excess Air

Carbon Dioxide (CO2)

NOx (NOx = NO + NO2)

NOx referenced to %O

CO referenced to %O

NO referenced to %O

NO2 referenced to %O

SO2 referenced to %O

2

2

2

2

2

3 3 3

3 3 3

3 3 3

3

3

3 3 3

3 3

3

3 3

Instruction 24-9448 1-3

Introduction

1.3 Features & Benefits

• Powered by 4 ‘AA’ alkaline batteries, or NiMH rechargeable batteries.
An optional AC power adapter provides continuous operation.

• Internal charging circuit allows rechargeable batteries to be charged
inside the analyzer with the use of the optional AC power adapter.

• O2 and CO
two additional gases: CO

measurement standard. Optional measurement of up to

Low

, NO, NO2, or SO2.

High

• With the appropriate sensors installed, the analyzer optionally dis­plays pollution conversions for CO, NO, NO2, and SO2. Pollution con­versions include ppm, #/MBTU, mg/m3, and g/GJ.

• Smart sensor technology allows pre-calibrated sensors to be installed
in the field.

• Automatic zero of all sensing channels on ambient air when the ana­lyzer is first turned ON.

• Automatic flushing of the CO
exceeds 4,000 ppm, thus protecting the CO

sensor with fresh air if the CO level

Low

sensor from high CO

Low

levels. To measure CO levels above 4,000 ppm, the analyzer automati­cally switches to its CO

sensor, if installed.

High

• Automatic purging of the gas-sample system if the detected gas levels
are abnormally high when the analyzer is turned OFF.

• Displays temperatures in either °F or °C.

• Displays pressure in either inwc, mb, Pa, or hPa.

• Backlit graphic LCD with zoom capabilities.

• Low battery alarm.

• Stores 500 individual combustion records, which can later be recalled
for viewing, printing, or downloading to a personal computer. Stores an
additional 500 data logged records.

• Wireless IrDA link used for printing current and stored combustion
records, pressure records, sensor calibration data, and diagnostic data.

• USB connectivity for downloading stored data to a personal computer.

• Field replaceable sensors and thermocouple.

• Two year warranty on analyzer and all gas sensors except the O2 sen­sor which has a one (1) year warranty.

Instruction 24-94481-4

Introduction

•Language options including English, French, and Spanish

•Custom Display Formats

•Calibration Reminders - PCA2 can be set up to remind the user that
calibration is past due.

1.4 Operational Overview

The PCA 2 is powered by either its 4 internal batteries, or by an optional
AC power adapter that operates from any convenient source of 100–
240 VAC, 50/60 Hz power. The type of batteries used can be either dispos­able alkaline or rechargeable NiMH. Note that rechargeable batteries can
be charged inside the analyzer using the optional AC power adapter.

The PCA 2 is controlled by 11 front panel push buttons, while a graphical
LCD is used to display all combustion and emission test data and analyzer
parameters.

A probe and hose assembly, with an integral thermocouple and filter/wa­ter-trap connect to the bottom of the analyzer, thus providing the means of
drawing in gas samples, and for measuring stack temperature and draft.

The PCA 2 is turned ON by pressing its red I/O button. A warm-up period
of 60 seconds then begins, during which time the analyzer performs self
diagnostics. At the end of the warm-up period, if no errors were detected
the instrument will display the Combustion Test HOLD screen. If errors
were detected, the message “ERRORS DETECTED” is displayed along
with a list of the errors. These errors must be corrected before proceeding
with the combustion test.

Before starting a test be sure to select the fuel being burned. The default
fuel selected is Natural Gas. Note that the name of the fuel being burned
is indicated at the top of the display. To change the fuel: first, press the
MENU (F2) button; next, select FUEL from the menu; then use the but-
tons to highlight the fuel being burned; and finally, press the green ENT
button to select the highlighted fuel.

To assure correct combustion-efficiency calculations, the analyzer must
know the burner’s primary-air temperature. The analyzer normally uses
its internal temperature sensor for the primary-air temperature value, but
this method is only acceptable if the burner is using ambient room air. If
the burner is drawing in cold outside air, we recommend that the optional T­AIR thermocouple be used. This thermocouple plugs into the bottom of the

Instruction 24-9448 1-5

Introduction

analyzer and is placed in the burner’s primary-air stream.

Begin the combustion test by first inserting the analyzer’s probe tube into
the stack-gas stream of the appliance under test, and then pressing the
RUN/HOLD button to display the Combustion Test RUN screen. The ana­lyzer will begin to continuously monitor the stack temperature, %O2 and
emission levels in the stack gas and then display measured and calculated
values on its LCD. Values are listed in Section 2 Specifications.

During a test, the CO

sensor is protected from high CO levels by being

Low

automatically flushed with fresh air when the detected CO level exceeds
4,000 ppm. The analyzer will automatically start using its optional CO-

sensor, if installed, at CO levels starting at 4,001 ppm, thus providing

High

continuous CO readings up to 20,000 ppm.

A backlight enables a user to read the display in dimly-lit areas. Turn the
backlight ON and OFF by briefly pressing the I/O button.

The analyzer is turned OFF by pressing and holding down the I/O button
for at least 2 seconds. Note that there is a 5-second delay before the analyz­er actually turns OFF, during which time the analyzer can be turned back
ON by pressing the RUN/HOLD button. In addition, there is a gas-purge
feature that keeps the analyzer’s pump running if the gas level inside the
sensor chambers is abnormally high at shutdown. With the probe removed
from the stack and sampling fresh air, the analyzer purges itself until the
detected gas concentrations drop below predetermined levels.

1.5 Connector Descriptions

1.5.1 Probe Connections (Gas, Pressure, T-Stack)

Attach the probe and hose assembly to the analyzer by connecting its . . .

• stack-gas thermocouple to the analyzer's T-STACK connector,

• stack-gas hose to the analyzer's GAS connector,

• draft hose to the analyzer's +∆P connector.

Observe that the probe connectors are of different sizes and shapes, which
prevent incorrect connection to their associated connectors on the analyzer.

Instruction 24-94481-6

Introduction

T-STACK T-AIR

IrDA – Wireless printer
communications port

ENT:

• Selects a highlighted

menu item, or conrms the

entry of data

RUN / HOLD:

• Starts and stops a combustion

efciency test

• Pressing this button during
the 5 second turn-off period will
keep the analyzer turned ON

ESC – Displays previous menu
or previously viewed screen

I/O – Press from between
1 and 2 seconds to turn
analyzer ON and OFF

– With analyzer turned

ON, press briey to turn

backlight ON and OFF

LCD – 160 x 160
graphic display

F1 / F2 / F3 –
Soft Menu Buttons,
whose functions are

dened by labels

appearing above them
on LCD

USB – Computer
communications
connector

Arrow Buttons:

– Moves cursor
up the display,
or increments an
alphanumerical value

– Moves cursor
down the display,
or decrements an
alphanumerical value

– Moves cursor left,
or moves to top of
menu list

– Moves cursor right,
or moves to bottom of
menu list

T-STACK – Probe’s stack-gas
thermocouple connector

OPT – Option external
measurement connector

T-AIR – Primary /

POWER – AC power adapter

connector

ambient air thermo­couple connector

GAS – Probe’s gas
hose connector

“+∆P” Probe’s draft

hose tting

“–∆P” Reference

pressure hose tting

Figure 1-1. PCA 2 Components

Instruction 24-9448 1-7

Introduction

1.5.2 T-AIR (Primary Air Thermocouple)

If thermocouple P/N 104-1797 (10 feet long) or Utility Wand P/N 104-1799
(12 inch ridged probe with handle and 5 foot coiled cable) is to be used
to measure the burner’s primary air temperature, then connect either of
these thermocouples to the analyzer’s T-AIR connector.

1.5.3 POWER (AC Adapter)

The AC power adapter P/N 24-1404 can be used as an external power sup­ply, which will run the analyzer on a continuous basis.

When using rechargeable NiMH batteries, the AC power adapter can also
be used to charge the batteries while inside the analyzer. The analyzer’s
rapid-charger circuit, however, must first be turned ON per Section 3.16.
The rapid charger will charge a set of depleted batteries in approximately
2 - 3 hours.

When disposable alkaline batteries are used, the analyzer’s battery char­ger circuit must be OFF to prevent the batteries from overheating. As a
precaution, the charger circuit is automatically toggled back to its OFF
state when the analyzer is turned OFF.

1.5.4 ∆P (Differential Pressure)

Draft is measured by connecting the probe’s draft hose to the +∆P fitting,
while leaving the –∆P fitting open to the atmosphere.

In addition to measuring draft, the “+” and “–” ∆P fittings can also be used
to measure the differential pressure between two areas by first connecting
a hose P/N 24-1103 to the –∆P fitting, and then inserting the open end of
this hose into the area being used as the reference pressure. The analyzer’s
probe is then inserted into the area where differential pressure is to be
measured. Refer to Section 4.6.

1.5.5 USB (Computer Interface)

Data that has been stored in the analyzer’s memory can be downloaded to
a personal computer by connecting USB data cable P/N 104-4032 between
the USB ports of the computer and analyzer. Refer to Section 4.14.2.

1.5.6 IrDA (Printer Interface)

Data that has been stored in the analyzer’s memory can be printed on a

Instruction 24-94481-8

Introduction

compatible IrDA wireless printer by aligning their IrDA communication
ports. Refer to Section 4.16.

1.5.7 OPT (Option)

The option connector is used for optional external measurement features.

1.6 Front Panel Buttons

Descriptions of the front panel buttons are given below. Note that a control
may perform multiple functions as determined by what screen is being
displayed at the time.

The functions of these buttons are defined by labels ap­pearing above them on the LCD. The labels that appear
depend on the functions that can be performed in the
particular screen being displayed.

PRINT (F1): Transmits the data displayed on the screen
to a printer through the IrDA communications port.

MENU (F2): Displays the Main Menu.

SAVE (F3): Saves the data currently displayed on the

LCD in memory. Up to 500 individual Combustion Test
and Pressure records can be saved. After 500 records
have been saved, the memory must be cleared to continue
saving additional data. The analyzer will not overwrite
old data.

ZERO (F2): When viewing the Pressure screen, this
button zeros the pressure sensor to current atmospheric
conditions. When viewing the Temperature screen, this
button zeroes the temperature channel difference.

PAGE– (F1): When viewing the Memory or Logging
Directory, each press of this button pages down through
the directory. Holding this button down speeds up the
paging process.

PAGE+ (F3): When viewing the Memory or Logging
Directory, each press of this button pages up through
the directory. Holding this button down speeds up the
paging process.

Instruction 24-9448 1-9

Introduction

The arrow buttons move the cursor on the LCD in the di­rection of the arrow. In screens that require the entry of
alphanumerical data, use the buttons to move cursor
across the screen and then use the buttons to incre­ment and decrement the data. When viewing a menu, use
the buttons to quickly move to the top and bottom of
the menu.

Selects a highlighted menu. In addition, if changes were
made to one of the analyzer’s operating parameters (e.g.,
date, time, O2 reference, etc.), pressing this button con­firms those changes and saves them in memory.

Starts and stops a combustion test when the Combus­tion Test screen is displayed. Pressing this button in any
other screen returns the analyzer to the Combustion Test
HOLD screen. Pressing this button during the 5 second
turn-off-delay period will abort the turn-off process and
also return the analyzer to the Combustion Test HOLD
screen.

Displays a previously viewed screen. In addition, if
changes were made to one of the analyzer’s operating
parameters (e.g., date, time, O2 reference, etc.), pressing
this button aborts those changes, restores the old values,
and then displays the previously viewed screen.

Turns the analyzer ON and OFF, and is also used to
turn the backlight and button LEDs ON and OFF.

Note that when the analyzer is turned OFF, there is a
5 second delay, during which time an operator can keep
the analyzer turned ON by pressing the RUN / HOLD
button. Also note that if the measured emission levels
are above predetermined limits at the time the instru­ment is turned OFF, the pump is automatically started
and purges the sensor compartment with fresh air until
the gas levels inside the analyzer are reduced. If desired,
the purging process can be aborted by again pressing the
I/O button.

Instruction 24-94481-10

Specications

2 Specifications

The PCA 2 Directly Measures and Displays:

The gases displayed depend on the analyzer’s model number.
Refer to Section 1.2.

Oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 20.9%

Stack Temperature . . . . . . . . . . . . . . . . . . . . –4 to 2,192 ºF (–20 to 1,200 ºC)

Primary / Ambient Air Temperature . . . . . . . . –4 to 999 ºF (–20 to 537 ºC)

Carbon Monoxide (CO) (H2 compensated) . . . . . . . . . . . . . . . .0 to 4,000 ppm

Pressure / Draft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±72 "H2O (±180 mb)

CO High Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,001 to 20,000 ppm

Nitric Oxide (NO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to 3,000 ppm

Nitrogen Dioxide (NO2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 500 ppm

Sulfur Dioxide (SO2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to 5,000 ppm

The PCA 2 Calculates and Displays:

Calculations are performed only when the measured oxygen level is below

16.0%, and the stack temperature is below 2,000 °F (1,093 ºC).

Combustion Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.1 to 100%

Excess Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 to 250%

Carbon Dioxide (dry basis) . . . . . . . . . . 0.1 to fuel dependent maximum in %

NOx (NOx = NO + NO2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3,500 ppm

NOx referenced to %O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 9,999 ppm

CO referenced to %O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 9,999 ppm

NO reference to %O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 9,999 ppm

NO2 reference to %O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 9,999 ppm

SO2 reference to %O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 9,999 ppm

Fuels Available for Combustion Calculations:

• Natural Gas • Coal

• Oil #2 • Wood

• Oil #4 • Kerosene

• Oil #6 • Bagasse

• Propane • Digester Gas

Instruction 24-9448 2-1

Specications

Normal Operating Conditions:

Temperature:

Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 to 104 ºF (0 to 40 ºC)

Probe Tip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,472 ºF (800 ºC) Max.

Humidity:

Analyzer . . . . . . . . . . . . . .15 to 90% Relative Humidity, non-condensing

Air Pressure:

Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Atmospheric

Probe . . . . . . . . . . . . . . . . . . . . . 10" H2O (25 mb) draft max. at probe tip

Performance:

Accuracy:

O2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.3% O2 on practical concentrations

of stack gas (mix of O2, CO2 and N2)

CO . . . . . . . . . . . . . . . . . . . . . . . . . . ±5% of reading or ±10 ppm,

whichever is greater between
0–2,000 ppm, and ±10% of reading
between 2,001–20,000 ppm.

NO . . . . . . . . . . . . . . . . . . . . . . . . . . ±5% of reading or ±5 ppm,

whichever is greater between
0–2,000 ppm

NO2 . . . . . . . . . . . . . . . . . . . . . . . . . ±5% of reading or ±5 ppm,

whichever is greater between
0–500 ppm

SO2 . . . . . . . . . . . . . . . . . . . . . . . . . ±5% of reading or ±10 ppm,

whichever is greater between
0–2,000 ppm

Stack Gas Temp. . . . . . . . . . . . . . . . ±4 ºF between 32 and 255 ºF

(±2 ºC between 0 and 124 ºC)
±6 ºF between 256 and 480 ºF
(±3 ºC between 125 and 249 ºC)
±8 ºF between 481 and 752 ºF
(±4 °C between 250 and 400 °C)

Primary / Ambient Air Temp. . . . . . ±2 ºF between 32 and 212 ºF

(±1 °C between 0 and 100 °C)

Pressure / Draft . . . . . . . . . . . . . . . . ±2% of reading or ±0.02 "H2O

(±0.05 mb), whichever is greater

System Flow Rate with Probe . . . . . . . 200 cc/min minimum

Instruction 24-94482-2

Specications

Power Requirements:

Four disposable ‘AA’ alkaline batteries provide at least 15 hours of continu­ous operation. NiMH rechargeable batteries can also be used, with the
operating time dependent on battery type and condition.

An optional AC power adapter, which runs from any convenient source of
100–240 VAC, 50/60 Hz power, can be used to power the analyzer on a con­tinuous basis. If using rechargeable batteries, the AC power adapter can also
be used to charge the batteries while inside the analyzer.

Warm-Up Time:

60 seconds. Sensors are checked and auto zeroed during warm-up.

Memory:

• 500 complete combustion test records

• 500 complete logged combustion test records

Interfaces:

• Printer – Infrared (IrDA) communications

• Computer – USB

Dimensions:

9H x 3W x 2.5D inches (22.9 x 7.6 x 6.3 cm)

Weight:

• Analyzer – 1.4 lb (0.6 kg) w/ batteries

• Probe & Hose Assembly – 1 lb (0.5 kg)

Instruction 24-9448 2-3

Specications

Notes:

Instruction 24-94482-4

Initial Setup

Release and then
remove battery cover
by pushing latch up

3 Initial Setup

3.1 Scope

Before using the PCA 2, you MUST:

• Install batteries, or plug in the optional AC power adapter (Section 3.2)

• Connect the probe and hose assembly (Section 3.3)

• Check, and if necessary, make changes to the analyzer’s configuration
(Section 3.4)

3.2 Power

3.2.1 Installing or Replacing Batteries

Either alkaline or NiMH rechargeable batteries can used to power the an­alyzer. Note that if rechargeable batteries are used, they can be recharged
while installed inside the analyzer using the optional AC power adapter
(refer to Section 3.2.2).

Install or replace the batteries as described below:

1. Remove battery cover from back of unit (Figure 3-1.)

2. Remove (and properly dispose of) any old batteries.

3. Install a set of four ‘AA’ alkaline or NiMH batteries, per the “+” and
“–” markings inside the battery compartment.

4. Replace battery cover.

Figure 3-1. Installing Batteries

Instruction 24-9448 3-1

Initial Setup

3.2.2 Using the AC Power Adapter

The AC power adapter is capable of powering the analyzer on a continuous
basis. The adapter plugs into an appropriate 100–240 VAC, 50/60 Hz wall
outlet, and produces an output of +9 VDC. The adapter’s output connector
plugs into the analyzer’s POWER jack located on the bottom of the unit
(Figure 3-2).

If NiMH rechargeable batteries are used, the adapter can also rapid
charge these batteries in approximately 2 - 3 hours while still inside the
analyzer. For the batteries to be charged, however, the analyzer’s battery
charger circuit must be turned ON per Section 3.16.

3.3 Connecting the Probe and Hose Assembly

Do the following to attach the probe and hose assembly to the analyzer
(Figure 3-2):

1. Push the gas-sample hose connector, the larger of the two connectors (giv­ing a slight twist), onto the analyzer’s GAS fitting.

2. Push the draft-hose connector, the smaller connector (giving a slight
twist), onto the analyzer’s +∆P fitting.

3. Push the stack-gas thermocouple connector into the T-STACK jack (con­nector fits in only one way).

NOTE: The analyzer has a built-in temperature sensor for
measuring ambient temperature. Perform Step 4 only if the
optional primary / ambient air thermocouple is used.

4. Push the optional primary / ambient air thermocouple into the T-AIR
jack (connector fits in only one way).

IMPORTANT: To assure the accurate calculation of combustion
efficiency, the optional primary / ambient air thermocouple
must be used when the burner’s primary-air temperature is not
the same as the room temperature.

5. Inspect all hoses for cracks. If any hose is found to be defective, re­place the entire probe and hose assembly. Check that the water trap is
empty, and that the filter is not dirty or saturated with water.

Instruction 24-94483-2

Initial Setup

POWER

P

T-STACK T-AIR

GAS

Differential
Pressure Hose

(— ∆P) (Optional)

Probe
Handle

Water Trap /

Filter Assembly

Stack Gas

Thermocouple

Connector

(T-STACK)

AC Power

Adapter Jack
(POWER)

Option

Connector

(Optional External
Measurement)

Draft
Hose

(+ ∆P)

Gas Sample

Hose

(GAS)

Probe Tube

Probe Stop

Primary /

Ambient Air

Thermocouple
(T-AIR) (Optional)

Figure 3-2. Connecting the Probe and Hose Assembly to the PCA 2

Instruction 24-9448 3-3

Initial Setup

FUEL MENU
NATURAL GAS
OIL #2
OIL #4
OIL #6

PROPANE

COAL
WOOD

(more)

MENU

F1 F2 F3

MAIN MENU

FUEL

PRESSURE
TEMPERATURE
MEMORY
SETUP
CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

3.4 Operating Parameters

The PCA 2 is set up at the factory for the following operating parameters:

Fuel . . . . . . . . . . . . . . . . . . . . .Natural Gas

Temperature Units . . . . . . . . . °F

Pressure Units . . . . . . . . . . . .Inches of Water Column (inwc)

Pollution Units . . . . . . . . . . . .ppm

Date . . . . . . . . . . . . . . . . . . . . . Current MM/DD/YY

Time . . . . . . . . . . . . . . . . . . . . Current EST HH:MM AM/PM

O2 Reference . . . . . . . . . . . . . .0%

Print Pressure . . . . . . . . . . . .No

Zoom . . . . . . . . . . . . . . . . . . . .No

Battery Charger . . . . . . . . . . .OFF

Logging . . . . . . . . . . . . . . . . . . No

Button Sound . . . . . . . . . . . . .ON

To change any of these parameters, perform the associated procedure pro­vided in Sections 3.5 thru 3.22.

3.5 Fuel Selection

To assure the accurate calculation of combustion
efficiency, select the fuel being burned as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight FUEL, and
then press ENT to display the FUEL MENU.

3. Use the buttons to scroll through the list of
available fuels until the desired fuel is high­lighted. In the example shown, PROPANE
has been selected. (If custom fuels are added,
they will be displayed at the bottom of the
list)

TIP: Use the buttons to quickly scroll to the
bottom and top of the list.

4. Press ENT to save the selection and display
the Combustion Test HOLD screen. Observe

Instruction 24-94484

that the name of the selected fuel should now appear at the

SETUP MENU

TEMP UNITS

PRESSURE UNITS
POLLUTION UNITS
DATE
TIME
O2 REFERENCE
PRINT PRESSURE

(more)

MENU

F1 F2 F3

TEMP UNITS MENU
Celsius

Fahrenheit

MENU

F1 F2 F3

05/26/06 09:25:30 AM

MAIN MENU
FUEL
PRESSURE
TEMPERATURE
MEMORY

SETUP

CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

top of the screen.

Note: In addition to the standard fuels programmed into the

PCA2, Bacharach can develop custom fuel codes based on the
customers specific needs. The PCA2 can be programmed with
2 additional fuels which can be added to the instrument using
the PC based software provided. Consult factory for price and
delivery.

3.6 Temperature Units Selection

Select to display temperature in either °F or °C
as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight SETUP, and
then press ENT to display the SETUP MENU.

Initial Setup

3. Use the buttons to highlight TEMP
UNITS, and then press ENT to display the
TEMP UNITS MENU.

4. Use the buttons to highlight the desired
temperature units. In the example shown,
Fahrenheit has been selected.

5. Press ENT to save the selection and re-display
the SETUP MENU.

Instruction 24-9448 5

Initial Setup

PRESSURE UNITS MENU

InchesWater

milliBar
Pascals
hectoPascals

MENU

F1 F2 F3

05/26/06 09:25:30 AM

MAIN MENU
FUEL
PRESSURE
TEMPERATURE
MEMORY

SETUP

CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

SETUP MENU
TEMP UNITS

PRESSURE UNITS

POLLUTION UNITS
DATE
TIME
O2 REFERENCE
PRINT PRESSURE

(more)

MENU

F1 F2 F3

3.7 Pressure Units Selection

Select to display pressure in Inches of Water Column (inwc), millibar (mb),
Pascals (Pa), or hectoPascals (hPa) as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight SETUP, and
then press ENT to display the SETUP MENU.

3. Use the buttons to highlight PRESSURE
UNITS, and then press ENT to display the
PRESSURE UNITS MENU.

4. Use the buttons to highlight the de­sired pressure units. In the example shown,
InchesWater has been selected.

5. Press ENT to save the selection and re-display
the SETUP MENU.

Instruction 24-94486

Initial Setup

SETUP MENU
TEMP UNITS
PRESSURE UNITS

POLLUTION UNITS

DATE
TIME
O2 REFERENCE
PRINT PRESSURE

(more)

MENU

F1 F2 F3

POLLUTION UNITS MENU

ppm

#/Mbtu
mg/m3
g/GJ

MENU

F1 F2 F3

05/26/06 09:25:30 AM

MAIN MENU
FUEL
PRESSURE
TEMPERATURE
MEMORY

SETUP

CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

3.8 Pollution Units Selection

The PCA 2 is capable of converting the measured ppm levels of CO, NO,
NO2, and SO2 to various pollution units using CFR40 Part 60 emission
factors. Note that the pollution-unit conversions for NO, NO2 and NOx are
based on the molecular weight of NO2.

Select to display pollution units in parts per million (ppm), pounds of pol­lutant per million BTU (#/Mbtu), milligrams of pollutant per cubic meter
of gas (mg/m3), or grams of pollutant per gigajoule (g/GJ) as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight SETUP, and
then press ENT to display the SETUP MENU.

3. Use the buttons to highlight POLLUTION
UNITS, and then press ENT to display the
POLLUTION UNITS MENU.

4. Use the buttons to highlight the desired
pollution units. In the example shown, ppm
has been selected.

5. Press ENT to save the selection and re-display
the SETUP MENU.

Instruction 24-9448 7

Initial Setup

SETUP MENU
TEMP UNITS
PRESSURE UNITS
POLLUTION UNITS

DATE

TIME
O2 REFERENCE
PRINT PRESSURE

(more)

MENU

F1 F2 F3

MAIN MENU
FUEL
PRESSURE
TEMPERATURE
MEMORY

SETUP

CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

DATE MENU

DATE 05/26/06

Press ENTER to Save

05/26/06 09:25:30 AM

MENU

F1 F2 F3

3.9 Date Setup

The date is stored in the format: MM/DD/YY. Its
value is part of the date and time stamp that is
saved along with each combustion test record.

Set the analyzer’s internal clock to the current
date as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight SETUP,
and then press ENT to display the SETUP
MENU.

3. Use the buttons to highlight DATE, and
then press ENT to display the DATE MENU.

4. First use the buttons to move the cursor
across the screen until it is over the digit to
be changed, and then press the buttons
until the desired value is displayed.

5. Repeat Step 4 until the values for month, day,
and year have been set.

6. Press ENT to save the displayed date values
and re-display the SETUP MENU, or press
ESC to abort this procedure and retain the
old date values.

Note: The Date and Time real time clock is powered by the main bat­teries and is maintained by a supercap on the Main PCB for approxi­mately 1-2 days in the absence of batteries. The supercap is intended
to maintain the real time clock when the batteries are changed when
exhausted. If the batteries are removed for extended periods of time
such as when the PCA2 is not in use (off-season storage), simply reset
the time and date after fresh batteries are installed when it is placed
back in service.

Instruction 24-94488

SETUP MENU
TEMP UNITS
PRESSURE UNITS
POLLUTION UNITS
DATE

TIME

O2 REFERENCE
PRINT PRESSURE

(more)

MENU

F1 F2 F3

3.10 Time Setup

MAIN MENU
FUEL
PRESSURE
TEMPERATURE
MEMORY

SETUP

CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

TIME MENU

TIME 09:25 AM

Press ENTER to Save

05/26/06 09:25:30 AM

MENU

F1 F2 F3

The time is stored in the format: hh:mm:ss AM/
PM. Its value is part of the date and time stamp
that is saved along with each combustion test re­cord.

Set the analyzer’s internal clock to the current
time as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight SETUP,
and then press ENT to display the SETUP
MENU.

3. Use the buttons to highlight TIME, and
then press ENT to display the TIME MENU.

4. First use the buttons to move the cursor
across the screen until it is over the digit to
be changed, and then press the buttons
until the desired value is displayed.

Initial Setup

5. Repeat Step 4 until the values for hour, min­ute, and meridiem have been set.

NOTE: The value for seconds cannot be en-

tered, but are displayed and stored as part of
the combustion test record.

6. Press ENT to save the displayed time values
and re-display the SETUP MENU, or press
ESC to abort this procedure and retain the old
time values.

Instruction 24-9448 9

Initial Setup

O2 REFERENCE

CO Ref to O2

NOx Ref to O2
SO2 Ref to O2

05/26/06 09:25:30 AM

MENU

F1 F2 F3

MAIN MENU
FUEL
PRESSURE
TEMPERATURE
MEMORY

SETUP

CALIBRATION
DIAGNOSTICS
STATUS

F1 F2 F3

MENU

SETUP MENU
TEMP UNITS
PRESSURE UNITS
POLLUTION UNITS
DATE
TIME

O2 REFERENCE

PRINT PRESSURE

(more)

MENU

F1 F2 F3

SET O2 REFERENCE

CO REF TO O2: 0

05/26/06 09:25:30 AM

MENU

F1 F2 F3

3.11 O2 Reference Setup

The measured values of CO, NOx, and SO2 can be
individually referenced to a specific O2 percentage
of between 0 and 15%.

Individually set up the O2 reference value for each
of the above gases as follows:

1. Display the MAIN MENU by pressing the
MENU (F2) button. If necessary, press ESC
until MENU appears above F2.

2. Use the buttons to highlight SETUP, and
then press ENT to display the SETUP MENU.

3. Use the buttons to highlight O2 REF, and
then press ENT to display the O2 REFER­ENCE screen.

4. Use the buttons to highlight the desired
measurement, and then press ENT to display
the REF TO O2 screen for that measurement.
In the example shown, CO has been selected.

5. First use the buttons to move the cursor
across the screen until it is over the digit to
be changed, and then press the buttons
until the desired value is displayed.

6. Press ENT to save the displayed value and re­display the O2 REFERENCE screen, or press
ESC to abort this procedure and retain the
old O2 reference value.

7. If the O2 reference value for more than one gas
is being set, then repeat Steps 4, 5, and 6 for
each measurement.

Instruction 24-944810