Bacharach 0024-0980, 0024-3023, 4998-8986, 0024-0977, 0105-5104 User manual

Environmental Combustion Analyzer

Model 450

Instruction 0024-9400

Operation & Maintenance

Rev. 7 – October 2014

Product Leadership • Training • Service • Reliability

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HAZARDOUS AREA WARNING:

COMBUSTIBLE/FLAMMABLE GAS WARNING: This is NOT a safety device. Some flue

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
one (1) year after the date of delivery of this Product by Bacharach, Inc.

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.

Note: The probe is considered a consumable item and is therefore not covered under the terms of this warranty.

This instrument has not been designed to be intrinsically

WARRANTY

safe for use in areas classified as hazardous locations. For your safety,
hazardous (classified) locations.

DO NOT use it in

gases which this instrument can measure may be combustible/flammable. This instrument
should not be used to monitor combustible flue gases at or above their respective lower
explosive limits (LEL). Immediately correct those conditions in the appliance (e.g. boiler,
furnace…) causing unfired combustible gases before proceeding with the flue gas
measurements.

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 © 2000−2014, 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 owners.

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ECA 450 Contents

Table of Contents

1 Introduction .................................................................................................................... 1

1.1 General Description ................................................................................................................................... 1

1.2 Features ..................................................................................................................................................... 1

1.3 Technical Data ............................................................................................................................................ 2

1.4 Operation Overview ................................................................................................................................... 5

1.5 Front Panel Connections and Controls ...................................................................................................... 6

1.5.1 GAS, PRESSURE, T-STACK (Probe) .............................................................................................. 6

1.5.2 T-AIR (Primary Air Thermocouple) ............................................................................................. 7

1.5.3 POWER (AC Adapter) ................................................................................................................. 7

1.5.4 ∆P REF (Differential Pressure) ................................................................................................... 7

1.5.5 RS232 (Computer Interface) ...................................................................................................... 7

1.5.6 OPT (Option) .............................................................................................................................. 7

1.6 Front Panel Keypad Controls ..................................................................................................................... 8

2 Operation ..................................................................................................................... 11

2.1 Turning On the Analyzer .......................................................................................................................... 11

2.2 Turning Off the Analyzer .......................................................................................................................... 11

2.3 Fuel Selection ........................................................................................................................................... 12

2.4 Performing a Combustion Test ................................................................................................................ 13

2.5 Ending a Combustion Test ....................................................................................................................... 15

2.6 Performing a Draft Measurement ........................................................................................................... 15

2.7 Saving Test Data ....................................................................................................................................... 16

2.8 Clearing Memory ..................................................................................................................................... 16

2.9 Recalling Test Data Stored in Memory ..................................................................................................... 17

2.10 Printing Data ............................................................................................................................................ 19

2.11 Downloading Data to a Personal Computer ............................................................................................ 20

2.12 Data Logging ............................................................................................................................................ 22

2.12.1 Turning Data Logging On .......................................................................................................... 22

2.12.2 Turning Data Logging Off ......................................................................................................... 24

2.13 Importing Saved Data Into a Spreadsheet ............................................................................................... 25

2.14 Primary Air Temperature Measurement ................................................................................................. 27

2.14.1 Thermocouple Method ............................................................................................................ 27

2.14.2 Probe Thermocouple Method ................................................................................................. 27

2.14.3 Thermometer Method ............................................................................................................. 29

2.14.4 Internal Temperature Sensor Method ..................................................................................... 30

2.15 Differential Pressure Measurement ........................................................................................................ 31

2.16 Statistics Mode......................................................................................................................................... 32

2.17 Setting Up the Analyzer ........................................................................................................................... 35

2.17.1 Temperature Units ................................................................................................................... 36

2.17.2 Pressure Units .......................................................................................................................... 36

2.17.3 Pollution Units ......................................................................................................................... 36

2.17.4 Language .................................................................................................................................. 37

2.17.5 Date .......................................................................................................................................... 37

2.17.6 Time ......................................................................................................................................... 38

2.17.7 O2 Reference ............................................................................................................................ 38

2.17.8 Test ID ...................................................................................................................................... 39

2.17.8.1 Enter / Edit Test ID Information ......................................................................... 39

2.17.8.2 Select Test ID ...................................................................................................... 40

2.17.8.3 Transmit Test ID.................................................................................................. 41

2.17.8.4 Clearing Test ID Information .............................................................................. 42

2.17.9 Display Timeout ....................................................................................................................... 43

2.17.10 Display Format ......................................................................................................................... 43

2.17.10.1 Changing Display Format .................................................................................... 44

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Contents ECA 450

2.17.10.2 Resetting Display Format Back to Factory Default ............................................. 44

2.17.11 Primary Air ............................................................................................................................... 45

2.17.12 Data Logging ............................................................................................................................ 45

2.17.13 Statistics ................................................................................................................................... 45

2.17.14 User Name ............................................................................................................................... 45

2.17.14.1 Enter / Edit User Name Information................................................................... 45

2.17.14.2 Clear User Name Information............................................................................. 46

2.17.15 Keypad Sound .......................................................................................................................... 46

2.17.16 High Resolution NOx Enable .................................................................................................... 47

2.17.17 Print Pressure ........................................................................................................................... 48

2.17.18 Information .............................................................................................................................. 48

3 Calibration .................................................................................................................... 49

3.1 Initial Sensor Check .................................................................................................................................. 49

3.2 Calibration Fixtures .................................................................................................................................. 50

3.3 Starting and Ending a Calibration Procedure ........................................................................................... 51

3.4 Calibrate Pressure Sensor ........................................................................................................................ 51

3.5 Calibrate T-Stack (Stack Temperature) Channel ...................................................................................... 52

3.6 Calibrate T-Air (Ambient Temperature) Channel ..................................................................................... 53

3.7 Calibrate HC Sensor ................................................................................................................................. 54

3.8 Calibrate CO-LO Sensor ............................................................................................................................ 55

3.9 Calibrate SO2 Sensor ................................................................................................................................ 57

3.10 Calibrate NO Sensor ................................................................................................................................. 58

3.11 Calibrate NO2 Sensor ................................................................................................................................ 59

3.12 Calibrate CO-HI Sensor ............................................................................................................................. 60

4 Maintenance ................................................................................................................. 61

4.1 Battery Charging ...................................................................................................................................... 61

4.2 Water-Trap / Filter Assembly ................................................................................................................... 62

4.3 Printer Paper Replacement ...................................................................................................................... 63

4.4 Sensor Replacement ................................................................................................................................ 64

4.4.1 O2, CO, NO, NO2, & SO2 Sensor Replacement .......................................................................... 65

4.4.2 Nitric Oxide Sensor Battery Replacement ................................................................................ 66

4.4.3 HC Sensor Replacement ........................................................................................................... 67

4.5 Replacing Internal Particulate Filter ......................................................................................................... 68

4.6 Cleaning the Probe and Sampling Hoses ................................................................................................. 69

4.7 Resetting the Microprocessor .................................................................................................................. 70

5 Troubleshooting ............................................................................................................ 72

5.1 Analyzer Repair ........................................................................................................................................ 72

5.2 Problem Messages Displayed After Warm-Up ......................................................................................... 72

5.3 Error Symbols ........................................................................................................................................... 73

5.4 Troubleshooting Guide ............................................................................................................................ 74

6 Parts & Service .............................................................................................................. 79

6.1 Replacement Parts ................................................................................................................................... 79

6.2 Accessories ............................................................................................................................................... 80

6.3 Service Centers ........................................................................................................................................ 81

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ECA 450 Introduction

1

1 Introduction

1.1 General Description

The Bacharach Environmental Combustion Analyzer Model 450 (hereafter
referred to as the ECA 450) is an industrial grade environmental and
combustion efficiency analyzer that is designed for the testing of fuel-burning
combustion equipment. This analyzer is for furnace and boiler technicians
who need to determine combustion safety, environmental compliance, and
efficiency of small to large commercial industrial heating systems.

1.2 Features

• Measures and displays O
primary air temperature, and stack temperature.

• Calculates combustion efficiency, excess air, and CO

• Optionally measures and displays NO, NO

combustibles), and CO (in the high range of 4,000 to 80,000 ppm).

• Optionally calculates NOx (the combination of NO and NO
calculates CO, SO
Oxygen level of between 0 and 15%.

• Automatically purges the low-range CO sensor with fresh air if the CO
level exceeds 4,000 ppm. At this time the analyzer also automatically
switches over to its optional high-range CO sensor, if installed.

• Automatically zeros all sensing channels on ambient air when the
analyzer is first turned on.

• Displays temperature in either °C or °F.

• Displays pressure in either inches of water column (inwc), millibars (mb),

Pascals (Pa), or hecto Pascals (hPa).

• Optionally displays pollution conversions for CO, NO, NO
Pollution conversions include parts per million (ppm), pounds of pollutant
per million BTU (#/MBTU), milligrams of pollutant per cubic meter of gas

3

(mg/m

• Low battery warning message.

• Stores over 1000 individual combustion and/or pressure test records,

which can later be recalled for viewing or printing.

• Stored test records can be downloaded to a personal computer in comma­delimited format, which can be captured as a text file and then opened in a
spreadsheet program.

), and grams of pollutant per gigajoule (g/GJ).

, and NOx individually referenced to a user defined

2

and CO in the flue gas, pressure (draft),

2

.

2

, SO2, HC (methane equivalent

2

), and

2

, and SO2.

2

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Introduction ECA 450

• Performs data logging. A series of combustion tests can be automatically
started at user-defined intervals, and the data saved for reviewing at the
conclusion of the logging period. The data can be stored in either the
analyzer’s internal memory, sent to a personal computer, or both.

• Utilizes four sources of primary-air temperature information in the
following priority: 1) A thermocouple can be inserted into the primary-air
stream and plugged into the analyzer’s front panel T-AIR connector. 2) A
primary-air temperature reading can be made with the probe’s
thermocouple and stored in memory. 3) An external thermometer can be
used to take a primary-air temperature reading and then entered into
memory using the analyzer’s front panel keypad. 4) If no other primary-air
temperature source is available, the analyzer defaults to an internal case
temperature that is measured the on printed circuit board.

• Stores test identification that is manually entered by an operator. This
information is added to the test records as they are saved, and appears
within each test record when printed.

• Stores user name information that is manually entered by the owner or
user of the analyzer. This information appears at the top of each printout.

• Displays information in either English, French, or Spanish.

• Can be set up to automatically turn off the front-panel display to conserve

battery life.

1.3 Technical Data

The ECA 450 Directly Measures and Displays:

• Oxygen content in flue gas in the range of 0.1 to 20.9% O2.

• Stack gas temperature in the range of –4 to 2400 ºF (–20 to 1315 ºC).

• Primary-air in the range of –4 to 999 ºF (–20 to 999 ºC).

• Pressure in the range of ±27.7 inches of water column (±69 mb).

• Carbon Monoxide content in flue gas in the range of 0 to 4,000 ppm CO

(corrected for the presence of Hydrogen).

Optionally . . .

• Carbon Monoxide in the range of 4,000 to 80,000 ppm CO.

• Nitric Oxide in the range of 0 to 3,500 ppm NO.

• Nitrogen Dioxide in the range of 0 to 500 ppm NO

• Sulfur Dioxide in the range of 0 to 4,000 ppm SO

• Combustibles in the range of 0 to 5% gas.

The ECA 450 Calculates and Displays:

The following is true only when the measured Oxygen level is not above 16.0%,
and the Stack (Flue Gas) temperature is not above 2192 °F (1200 ºC)

• Combustion efficiency in the range of 0.1 to 100%.

• Excess Air in the range of 1 to 250%.

• Carbon Dioxide content in flue gas in the range of 0.1 to a fuel dependent

maximum CO

• Carbon Monoxide content referenced to a user defined percentage of
Oxygen in the range of 0 to 99,999 ppm CO.

• Differential pressure in the range of ±27.7 inches of water column
(±69 mb).

value in percent.

2

2.

2.

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ECA 450 Introduction

3

Optionally . . .

• NOx content in the range of 0 to 4,000 ppm NOx.

• NOx content referenced to a user defined percentage of Oxygen in the

range of 0 to 17,000 ppm NOx.

• Nitric Oxide content referenced to a user defined percentage of Oxygen
in the range of 0 to 14,900 ppm NO.

• Nitrogen Dioxide content referenced to a user defined percentage of
Oxygen in the range of 0 to 2,100 ppm NO

2.

• Sulfur Dioxide content referenced to a user defined percentage of Oxygen
in the range of 0 to 17,000 ppm SO

2.

Fuels Available for Combustion Calculations:

• Natural Gas • Propane

• Oil #2 • Coal

• Oil #4 • Wood

• Oil #5 • Kerosene

• Oil #6 • Bagasse

Normal Operating Environment:

Temperature:

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

Probe Tip ................... 1472 ºF (800 ºC) Max.

Humidity:

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

Air Pressure:

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

Probe .......................... 10" H

2O (25 mb) negative pressure max. at probe tip.

Accuracy:

Oxygen .................................... ±0.3% O2, on a practical concentration of flue

gas (mixtures of O

Carbon Monoxide .................. ±5% of reading or ±10 ppm, whichever is

greater, between 0 and 2,000 ppm CO, and
±10% of reading between 2,001 and
40,000 ppm CO

Nitric Oxide ............................ ±5% of reading or ±5 ppm, whichever is greater,

between 0 and 2,000 ppm NO

Nitrogen Dioxide .................... ±5% of reading or ±5 ppm, whichever is greater,

between 0 and 500 ppm NO

Sulfur Dioxide ........................ ±5% of reading or ±10 ppm, whichever is

greater, between 0 and 2,000 ppm SO

Combustibles .......................... ±5% of full scale

Stack Temperature ................ ±4 °F between 32 and 255 °F

(±2 °C between 0 to 124 °C)

±6 °F between 256 and 480 °F

(±3 °C between 125 to 249 °C)

±8 °F between 481 and 752 °F

(±4 °C between 250 to 400 °C)
Primary Air / Ambient

Temperature ....................... ±2 °F between 32 and 212 °F

(±1 °C between 0 to 100 °C)

Pressure ................................. ±2% of reading or ±0.05 mB (0.02 inches of H

whichever is greater.

, CO2 and N2)

2

2

2

O),

2

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Introduction ECA 450

Front Panel Controls and Indicators:

Sixteen embossed push-button switches with tactile feedback (refer to
Section 1.6). One POWER LED.

Display:

2¼" × 8", 20 character by 4 line alphanumeric vacuum-fluorescent
display panel.

Power Requirements:

Internal 7.2V battery pack, or AC adapter (100–240 VAC, 50/60 Hz).

Operating Time:

A fully charged battery pack will provide at least 8 hours of continuous
operation with the pump running. Unlimited operating time when using the
AC adapter.

Warm Up Time:

60 seconds.

Printer:

Internal, 2¼" wide paper, 20 characters.

Materials:

• High impact ABS plastic briefcase with storage for the standard probe,

instruction manual, and AC adapter.

• Nickel plated, brass quick-connect hose fittings.

• Stainless steel probe.

Dimensions:

Height: 13.5 in. (343 mm).
Width: 18.5 in. (470 mm).
Depth: 9 in. (229 mm).

Weight:

Approximately 25 lbs (11.34 kg).

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ECA 450 Introduction

5

1.4 Operation Overview

The ECA 450 is microprocessor controlled, allowing it to be easily operated
and configured to suit each operator’s individual needs. Using a system of
menu selections, the operator is guided through the proper operation and set­up procedures, signaling the appropriate action, and waiting until the correct
steps are taken.

The analyzer is powered by either its internal battery pack, or by an AC
adapter that operates from any convenient source of 100–240 VAC, 50/60 Hz
power. The analyzer’s control panel consists of a bright and easy-to-read 2¼"
× 8" blue vacuum-fluorescent display, sixteen pushbuttons, and one POWER
LED. A sampling probe and hose assembly with an integral thermocouple
and water/filter trap provides the means of drawing in gas samples, and for
measuring stack temperature and pressure.

A burner’s combustion efficiency is calculated by first entering the fuel being
burned and then allowing the analyzer to measure the burner’s primary air
temperature, stack temperature, and percent Oxygen in the flue gas. This
information is processed by the analyzer, resulting in the display of all the
measured and calculated values that are listed in Section 1.3 Technical Data.

For analyzer models that are equipped for environmental monitoring of
combustion by-products, the gas sample that was drawn into the analyzer
through its probe is applied to an array of electrochemical gas sensors. The
results of the analyzer’s gas analyses are shown on the front panel display.

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Introduction ECA 450

RS 232

POWER

OPT

T-STACK T-AIR

PRESSUREGAS

P REF

ECA 450

SET UP

CALIBRATE

MEMORY

FUEL

MENU

PRINT

POWER

I/O

RUN

SAVE

ENTER

V

ESC

PRESSURE

PRINT

– Prints contents of either the
Combustion Test or Pressure screen
on local printer.

SAVE – Saves to memory the contents
of the Combustion Test or Pressure
screen. Saved data can later be
recalled for viewing on the display, or
downloaded to a personal computer.

MENU

– Steps display from the
Combustion Test screen through the
Setup List, Calibrate, Fuel, Pressure,
and Memory menu screens.
Alternately, a particular menu screen
can be directly displayed by pressing
its associated shortcut key.

I/O

– Turns analyzer ON and OFF.

RUN – Starts and stops a combustion
efficiency test.

SET UP

– Displays Setup List

screen.

CALIBRATE

– Displays Calibrate

screen.

FUEL

– Displays Fuel screen.

PRESSURE – Displays Pressure
screen.

MEMORY – Displays Memory
screen.

ESC

– Displays previous menu or previously

viewed screen.

– Moves cursor left.

– Moves cursor up through screen, or
increments an alphanumerical value.

– Moves cursor down through screen, or
decrements an alphanumerical value.

– Moves cursor right.

ENTER – Chooses a menu item that has been
selected by the cursor's position.

VACUUM FLUORESCENT
DISPLAY PANEL

(4 Lines by 20 Characters)

PRINTER

BATTERY CHARGER/
AC ADAPTER CONNECTOR

RS 232 CONNECTOR

P REF

– Differential pressure

reference hose connector

GAS – Probe's stack hose connector

PRESSURE – Probe's draft hose

connector

T-STACK – Probe's Flue-gas
thermocouple connector

T-AIR

– Primary air thermocouple

connector

OPT

– Option connector

STORAGE COMPARTMENT

6" x 18" x 3"

SENSOR COMPARTMENT

SHORTCUT MENU KEYS:

P / P

1.5 Front Panel Connections and Controls

Figure 1-1. ECA 450 Components

1.5.1 GAS, PRESSURE, T-STACK (Probe)

Attach the supplied probe to the analyzer by connecting its . . .

• flue-gas thermocouple to the analyzer’s T-STACK connector,

• flue-gas hose (yellow band) to the analyzer’s GAS connector,

• draft hose (blue band) to the analyzer’s PRESSURE connector.

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

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ECA 450 Introduction

7

1.5.2 T-AIR (Primary Air Thermocouple)

If thermocouple 0104-1797 (10 feet long) or Utility Wand 0104-1799 (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 thermocouple to the
analyzer’s T-AIR connector.

Refer to Section 2.14 Primary Air Temperature Measurement for alternate
methods of measuring the burner’s primary air temperature.

1.5.3 POWER (AC Adapter)

The analyzer’s internal battery pack is charged by connecting the supplied
AC adapter to any convenient source of 100–240 VAC, 50/60 Hz power, and
then connecting the charger’s output plug to the analyzer’s POWER
connector. Refer to Section 4.1 Battery Charging.

The AC adapter can also be used as an external power supply to simulta­neously charge and run the analyzer if its battery pack should become
depleted during use.

1.5.4 ∆P REF (Differential Pressure)

The Differential pressure between two areas can be measured by first
connecting pressure hose P/N 0024-1103 to the analyzer’s ∆P REF connector,
and 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 who’s
differential pressure is to be measured. Refer to Section 2.15 Differential
Pressure Measurement.

1.5.5 RS232 (Computer Interface)

Data that has been stored in analyzer’s memory can be sent to a personal
computer by connecting serial data cable P/N 0104-4027 (straight through,
6 foot, DB9 male to DB9 female) between the computer’s COM port and the
analyzer’s RS232 connector. Refer to Section 2.11 Downloading Data to a
Personal Computer.

1.5.6 OPT (Option)

Connector for future optional equipment.

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Introduction ECA 450

I/O

RUN

PRINT

SAVE

MENU

FUEL

PRESSURE

P / P

MEMORY

SETUP

1.6 Front Panel Keypad Controls

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

Turns the analyzer ON and OFF. Note that when the analyzer
is turned OFF, there is a 5 second off-delay period that allows
an operator to turn the analyzer back ON by pressing the RUN
key. Also note that if there are unsafe levels of gas present
inside the analyzer when it is turned OFF, the analyzer’s pump
is automatically started and purges the sensor compartment
with fresh air. The analyzer will turn OFF only after the gas
levels have been reduced. If desired, the purging process can be
aborted by again pressing the I/O key.

Starts and stops a combustion efficiency test when the Com­bustion Test RUN/HOLD screen is displayed. Pressing this key
from any of the menu screens returns the analyzer to the
Combustion Test HOLD screen. Pressing this key during the
5 second turn-off-delay period, or from the warm-up screen
whenever sensor errors are being displayed, will also cause the
Combustion Test HOLD screen to be displayed.

Prints the contents of either the Combustion Test or Pressure
screen on the local printer. This key is inactive in all other
screens.

Saves the contents of the Combustion Test or Pressure screen
to memory. The saved data can then later be recalled for
viewing on the display and printed or downloaded to a personal
computer.

Cycles the display from the Combustion Test screen though the
following menu screens: Fuel, Pressure, Memory, Setup List,
and Calibration List. These menu screens can also be directly
accessed by pressing their associated shortcut key.

Shortcut key to the Fuel menu screen, where operators can
choose which fuel is being burned.

Shortcut key to the Pressure menu screen, where operators can
view the pressure being sampled by the probe. Pressing this
key a second time allows an operator to zero the pressure
sensor.

Shortcut key to the Memory menu screen, where operators can
choose to either view the Memory Directory screen, transmit
saved data out the analyzer’s RS232 port, or clear memory.

Shortcut key to the Setup List menu screen, where operators
can choose to change various operating parameters of the
analyzer.

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ECA 450 Introduction

9

CALIBRATE

ENTER

∧

ESC

∧

Shortcut key to the Calibration List menu screen, where
operators can choose the sensor to be calibrated. Note that a
4-place alphanumerical password must first be entered to begin
calibration.

Selects a menu item that has been chosen by the position of the
cursor. In screens that require the
make a numerical or alphabetical selection (i.e., Date, Time, O

and ∨ keys to be used to

2

Reference., Test ID, Display Timeout, User Name, and
Calibrate screens), the

ENTER key is used to save those

selections to memory.

Displays a previous menu or previously viewed screen.

Moves cursor in direction of arrow. In screens that require an
operator to enter alphanumerical data (i.e., Date, Time, O

2

Reference., Test ID, Display Timeout, User Name, and
Calibrate screens), the

and ∨ keys are used to scroll through

the selections available for that screen.

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ECA 450 Operation

11

2 Operation

2.1 Turning On the Analyzer

Important! Prior to initially operating the analyzer, be sure to first charge the

battery per Section 4.1.

Before turning on the analyzer, connect the probe’s gas hose, pressure hose,
and thermocouple to the analyzer’s GAS, PRESSURE, and T-STACK
connectors, respectively (refer to Section 1.5.1).

Turn on the analyzer by pressing the I/O key. Observe that all display
segments are briefly turned on to verify their operation. The display then
shows the following information as the analyzer performs its 60 second
warm-up sequence:

BACHARACH, INC
ECA 450
WARM-UP xx

Where: xx = warm-up time, counting down from 60 seconds

Note: The software’s version number is briefly displayed at the bottom of the
screen prior to the start of the warm-up sequence.

At the end of a normal warm-up sequence, the message “No Problems
Detected” is briefly displayed followed by the display of the Combustion Test
HOLD screen. If, however, a problem was detected during warm-up, the
analyzer will display the message “Problem(s) Detected” and sequentially
display a list of those problems at the bottom of the screen, and then wait for
operator intervention. Refer to Section 5.2 Troubleshooting Guide for a list of
possible error messages and the recommended corrective action.

2.2 Turning Off the Analyzer

The analyzer is turned off by again pressing the I/O key. If there is any
residual gas inside the sensor chamber, the message “Purging Sensors” is
displayed while the analyzer purges itself with fresh air. The purging process
continues until all gas concentrations inside the analyzer have reached safe
levels.

Once the sensor chamber has been purged, the analyzer enters its normal 5­second-delay period; after which the analyzer turns off.

Important! The probe must be removed from the stack during the purging
process to allow fresh air to be drawn through the sensor chamber.

Tips: Pressing the I/O key will abort the purging process. During the off-delay
period, the analyzer can be turned back on by pressing the RUN key.

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2.3 Fuel Selection

The fuel currently being used for combustion analysis is displayed in the top
line of the Combustion Test RUN/HOLD screen.

«HOLD««««««««««NGAS«

In the above example, the current fuel is NGAS (natural gas).

Fuel Codes:
NGAS = Natural Gas
OIL2 = Oil #2
OIL4 = Oil #4
OIL5 = Oil #5
OIL6 = Oil #6
PROP = Propane
COAL = Coal
WOOD = Wood
KERO = Kerosene
BGAS = Bagasse

To select a different fuel:

1. Press FUEL key to display the Fuel menu screen.

«««««««FUEL«««««««
ª Natural Gas
Oil#2
Oil#4
Oil#5
Oil#6
Propane
Coal
Wood
Kerosene
Bagasse

2. Use ∧∨ keys to scroll through fuel list until cursor is next to desired fuel.

3. Press ENTER key to store the fuel selection in memory. The

corresponding fuel code should now appear in the upper-right hand corner
of the Combustion Test HOLD screen.

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ECA 450 Operation

13

FLUE GAS FLOW

(Downstream)

DRAFT
DIVERTER/
REGULATOR

SAMPLE
HOLE

(Upstream)

FURNACE

BREECHING

PROBE STOP

THUMBSCREW

2.4 Performing a Combustion Test

Important! When measuring nitrogen dioxide (NO

it is recommended that a Sampler Conditioner (Bacharach P/N 0024-7224) be
used to assure accurate readings.

1. If not already done, turn on analyzer (Section 2.1) and select a fuel
(Section 2.3).

2. See Figure 2-1. Make a ½-inch sampling hole in stack to accommodate
probe stop. Locate this sampling hole before any draft diverter/hood or
barometric damper so that flue gasses are not diluted and stack
temperature has not been decreased by surrounding air used to balance
the draft. Note that as the distance between the last heat exchanger and

sampling point increases, the calculated combustion efficiency will falsely
increase due to heat loss by convection from the flue or stack.

3. If burner’s primary-air temperature is different from that of room air, be
sure to either immerse primary-air thermocouple into primary-air
stream, or take a primary-air temperature measurement using either the
probe’s thermocouple or a thermometer (Section 2.14).

4. See Figure 2-2. Screw probe stop into sampling hole. Next, insert probe
through probe stop, positioning its tip near center of stack. Secure probe
by tightening the probe stop’s thumbscrew.

5. Press RUN key. You should hear the pump start running and see the
word RUN appear in the upper-left hand corner of the display.

6. The ECA 450 is now continuously measuring and calculating the values
shown in the Combustion Test RUN screen.

∧∨ keys to scroll through the following typical set of data (note that

Use
depending on which sensors are installed, some of the data listed below
may not be displayed).

Figure 2-1. Sampling Hole Location Figure 2-2. Installing the Probe

) and sulfur dioxide (SO2),

2

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Operation ECA 450

7. Tip: Use < > keys to quickly advance to the top and bottom of screen.

Also note that if “– – – –”, “x x x x”, or “* * * *” appear in a data field,
then data cannot be displayed for that measurement. Refer to Section 5.3
Error Symbols for an explanation of these symbols and why data is not
being displayed.

O2 = % Oxygen

(1)

CO = Carbon Monoxide
EFF = % Combustion Efficiency
CO2 = % Carbon Dioxide
T-STACK = Stack Temperature
T-AIR = Room/Primary-Air Temperature
EA = % Excess Air

(1)

NO = Nitric Oxide
NO2 = Nitrogen Dioxide
NOX = Oxides of Nitrogen (combination of NO and NO
SO2 = Sulfur Dioxide

(1,3)

(1)

(1)

)

2

HC = % Combustibles (Methane based)
CO(n) = Carbon Monoxide content referenced to a percentage of

(2)

Oxygen
NO(n) = Nitric Oxide referenced to a percentage of Oxygen
NO2(n) = Nitrogen Dioxide referenced to a percentage of Oxygen
NOX(n) = Oxides of Nitrogen (combination of NO and NO

referenced to a percentage of Oxygen
SO2(n) = Sulfur Dioxide referenced to a percentage of Oxygen

(2)

(2)

)

(2)

2

(2)

(1)

Unit of measure is determined by the selected Pollution Units. Refer to

Section 2.17.3.

(2)

The letter “n” represents the operator’s selected Oxygen reference level

of between 0 and 15%. Refer to Section 2.17.7.

(3)

The SO2 sensor cannot be installed without the NO2 sensor also being

installed.

8. Use ∧∨ keys to scroll to the T-STACK reading. Loosen thumbscrew on
probe stop and move probe in and out of the stack until stack’s core
temperature (hot spot) is located; then tighten thumbscrew to prevent
further movement of probe. Locating the highest stack temperature is very
important in obtaining accurate efficiency calculation results.

9. Burner-service procedures can now begin. The readings on the analyzer
will quickly change to show changes in burner performance.

10. If desired, combustion test readings can be saved. Refer to Section 2.7
Saving Test Data.

CAUTION: The sensors could become damaged if water enters the
analyzer. Drain the water condensate in the Water-Trap / Filter Assembly
as necessary during a combustion test as described in Step 10.

11. During an efficiency test, periodically check water level inside the probe’s
Water-Trap / Filter Assembly. With this assembly stood up on its Outlet
End, do not let water condensate build up beyond tip of riser tube. Drain
water condensate after every combustion test. For additional information
on this subject, refer to Section 4.2 Water-Trap / Filter Assembly.

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15

2.5 Ending a Combustion Test

1. After performing a combustion test per Section 2.4, press RUN key to end
the test. You should hear the pump stop running.

WARNING: Burn hazard! Take all necessary precautions when handling a
hot probe and probe stop.

CAUTION: Allow a hot probe and probe stop to cool before storing them
inside the analyzer’s carrying case.

2. Loosen thumbscrew on probe stop; then remove probe and probe stop
from stack.

Note: If data was saved during the combustion test, the analyzer can be
safely turned off without loosing the saved data, which can be reviewed at
a later time as described in Section “2.9 Recalling Test Data Stored in
Memory.”

3. Turn off analyzer per Section 2.2 Turning Off the Analyzer.

2.6 Performing a Draft Measurement

1. If not already done, turn on analyzer and place probe inside stack as
previously described (Sections 2.1 and 2.4).

2. Press PRESSURE key to display the Pressure screen.

««««««PRESSURE««««««
n.nn xxxx

Where: n.nn = current pressure reading
xxxx = pressure units (refer to Section 2.17.2)

3. If desired, pressure sensor can be zeroed at this time as described below.
To skip the zeroing procedure, proceed to Step 4.

a) With Pressure screen displayed, again press PRESSURE key to

display the Pressure Zero screen.

Pressure Zero
Disconnect Hose

Then Press ENTER

b) Disconnect probe’s pressure hose from analyzer’s PRESSURE

connector.

c) Press ENTER to zero pressure sensor to atmospheric pressure; after

which, reconnect probe hose that was removed in Step 3b.

Reconnect Hose

4. The Pressure screen is now displaying the stack’s draft value as a
negative pressure.

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2.7 Saving Test Data

By pressing the SAVE key, data that is currently being displayed in either
the Combustion Test or Pressure screen is stored in one of the analyzer’s over
1000 internal memory locations. Observe that the following message appears
when the SAVE key is pressed.

Saving Memory
Location nnnn

Where: nnnn = memory location number

At a later time, the stored data can be recalled for either viewing or
downloading as described in Section 2.9 Recalling Test Data Stored in
Memory.

Once all memory locations are filled, an attempt to save additional data will
cause the message “Memory Full” to be momentarily displayed. To save
additional data, memory must first be cleared per Section 2.8 Clearing
Memory.

Tip: Before clearing memory, its contents can be downloaded to a personal
computer for permanent storage per Section 2..11.

2.8 Clearing Memory

Clear all memory locations as follows:

1. Press MEMORY key to display the Memory menu screen.

2. Use ∧∨ keys to place cursor next to “Clear Memory”; then press ENTER.

«««««««MEMORY«««««««

Memory Directory
Transmit Memory
ª Clear Memory

3. Use ∧∨ keys to place cursor next to “Yes” (or “No” if you decide not to
clear memory); then press ENTER. Observe that the message “Clearing
Memory . . .” appears as memory is being cleared.

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2.9 Recalling Test Data Stored in Memory

To recall the contents of a particular memory location containing either
combustion test data or a pressure measurement, do the following:

1. Press MEMORY key to display the Memory menu screen.

2. Use ∧∨ keys to place cursor next to “Memory Directory”; then press
ENTER to show the directory of all stored test data.

«««««««MEMORY«««««««

ª Memory Directory
Transmit Memory
Clear Memory

3. Use ∧∨ keys to place cursor next to memory location that contains data to
be recalled. Note that memory locations are identified by the date and
time the data was stored. Also note that memory locations that do not
contain data are identified as “Memory Empty.”

Memory Directory
ªnnnn mm/dd/yy hh:mm
nnnn Memory Empty

Where: nnnn = memory location number
mm/dd/yy = month/day/year
hh:mm = hour:minute

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4. Press ENTER key to display the contents of chosen memory location.

Observe that “MEM:nnnn ” (where nnnn denotes the memory location
number) appears in the top line, signifying that the data being displayed
was recalled from memory. Also note that if any Test ID information was
associated with the test data, this information is displayed at the bottom
of the screen. Refer to Section 2.17.8 for additional information on Test ID.

«MEM:nnnn««««««NGAS«
O2 4.5 %
CO 12 ppm
EFF 82.2 %
CO2 9.9 %
T-STACK 374 °F
T-AIR 68 °F
.
.
.
SO2( 3) 1 ppm
xxxx

«MEM:nnnn«««««««««««
PRESS -0.25 inwc
xxxx

Where: nnnn = memory location number
xxxx = test ID information

Tip: Use < > keys to quickly advance to the top and bottom of screen.

5. Press ESC to return to Memory Directory screen where another memory
location can be viewed. Or press ESC twice to return to Memory menu
screen.

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ECA 450 Operation

19

User Name Line 1

Sample Printout

User name information as

Test identification information
Test data as measured and

Optional pressure printout as

2.10 Printing Data

By pressing the PRINT key, the data which is currently being displayed in
either the Combustion Test or Pressure screen is printed on the analyzer’s
internal printer. Note that the contents of no other screen can be printed.

Data which has been stored in memory can also be printed by first displaying
the contents of the desired memory location as described in Section 2.9
Recalling Test Data Stored in Memory.

User Name Line 2
User Name Line 3

BACHARACH, INC.
ECA 450
SN: xxxxxx
====================

Test ID Line 1
Test ID Line 2
Test ID Line 3

TIME 04:27:35 pm
DATE 01/20/2000

FUEL
Natural Gas

O2 4.0 %
CO 12 ppm
EFF 82.2 %
CO2 9.5 %
T-STACK 374 °F
T-AIR 68 °F (T)
EA 21 %
NO 18 ppm
NO2 6 ppm
NOX 24 ppm
SO2 1 ppm
HC 0.01 %
CO( 3) 13 ppm
NO( 3) 19 ppm
NO2( 3) 6 ppm
NOX( 3) 25 ppm
SO2( 3) 1 ppm

PRESSURE –0.02 inwc

--------------------­COMMENTS:

entered in Section 2.17.14

as entered and selected per
Section 2.17.8

calculated by the analyzer

selected in Section 2.17.17

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2.11 Downloading Data to a Personal Computer

Test data that was stored in memory can be downloaded to a personal
computer in ASCII text, comma-delimited format, which can then be
imported into most spreadsheet programs for analysis.

The following describes how to download data to a computer that is running
Windows®95/98, using HyperTerminal as the communications program. If a
different operating system and/or communications program is being used,
then consult the appropriate instruction manuals for those products.

Tip: To install HyperTerminal, first insert the Windows 95/98 CD, then click

Start, point to Settings, click Control Panel, double-click Add Remove
Programs, click Windows Setup, double-click Communications, select the
HyperTerminal check box, click OK twice.

1. Install serial data cable P/N 0104-4027 (straight through, 6 foot, DB9
male to DB9 female) between the computer’s COM port and the
analyzer’s RS232 connector. (For computers having a 25-pin COM port,
either use a 25-pin to 9-pin adapter, or use a serial cable with appropriate
connectors on each end.)

2. At the computer, start HyperTerminal by doing one of the following:

• If HyperTerminal has already been set up to communicate with the

ECA 450, then click Start, point to Programs, point to Accessories,
point to Communications, click HyperTerminal, and double-click
the file name or icon that has been associated with the ECA 450.

• If HyperTerminal has never been run in association with the ECA 450,

then a new HyperTerminal connection needs to be made as follows:

a) Click Start; click Run. In the Run box type “hypertrm.exe” and

click OK. The New Connection dialog box should appear.

b) Type in a New Connection Name such as “ECA450”. Click OK to

select the default icon (if desired, select a different icon before
clicking OK). The Connect To dialog box should appear.

c) Click the Connect using drop-down menu and choose the COM

port to which the analyzer is connected. Then click OK to display
the COM Properties dialog box for that COM port.

d) Set Port Settings to:

- Bits per second: 19200

- Data bits: 8

- Parity: None

- Stop bits: 1

- Flow control: None
Then click OK to display HyperTerminal’s main window.

e) Click File; click Save. This creates a file with an .ht extension in

the folder C:\Program Files\Accessories\Hyper Terminal, using
the name that was entered in Step b.

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21

3. After HyperTerminal is running: click Transfer, click Capture Text,
then click Start to accept the default drive\directory\filename to which
all received data will be stored as an ASCII text file.

Note: By default, the captured text file will be stored on the hard drive at
C:\Program Files\Accessories\HyperTerminal\CAPTURE.TXT. If
desired, click Browse to select a different drive, directory and filename.
The next time data is captured, it will be stored under the same location
and filename.

Tip: Changing the filename extension to “CSV” (comma separated
variable) will allow the file to be directly opened in the spreadsheet
program. For example, double clicking the filename CAPTURE.CSV in
Windows Explorer will automatically start Microsoft Excel and load
the file.

4. Press analyzer’s MEMORY key to display the Memory menu screen.

5. Use ∧∨ keys to place cursor next to “Transmit Memory”; then press
ENTER to display the “Transmit Memory” screen.

«««««««MEMORY«««««««

Memory Directory
ª Transmit Memory
Clear Memory

6. Use ∧∨ keys to select one of the following transmit options; then press
ENTER to choose that option. What happens next depends on the option
chosen.

Transmit Memory
ª Last
Range
All

• Last: Immediately transmits the last memory location that contains

data. Observe that the analyzer displays “Transmitting…” while also
displaying the record number being transmitted.

• Range: When chosen, the range-select screen is displayed. By default

the range is from 0 to the last memory location that contains data. To
change the range, first press ENTER to move the cursor into the “From
record” data field; Then use the

∧, ∨, <, and > keys as necessary to
enter the number of the first record to be transmitted. Again press
ENTER, this time to save record number and move cursor back to left
of screen. Repeat this procedure to change the “To record” data field.
Start data transmission by moving cursor next to “Transmit” line, and
then pressing ENTER. Observe that the analyzer displays
“Transmitting…” while also displaying the record number that is
currently being transmitted.

• All: Immediately transmits all memory locations that contain data.
Observe that the analyzer displays “Transmitting…” while also
displaying the record number that is currently being transmitted.

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7. Observe that HyperTerminal displays the data as it’s being received.
After all data has been transmitted, the analyzer re-displays the Memory
menu screen.

Tip: The download process can be stopped by pressing the ESC key.

8. To stop capturing data and save it, click Transfer, click Capture Text,
click Stop.

9. HyperTerminal and the connection to the ECA 450 can now be closed.

2.12 Data Logging

When the data logging function is turned on, combustion test data is
automatically stored at preset intervals over a predetermined length of time.
The test data can either be: 1) sent to the analyzer’s internal memory, 2) sent
to a personal computer as a comma-delimited ASCII text file for storage on
its hard drive, or 3) sent to both the analyzer’s internal memory and a PC.

2.12.1 Turning Data Logging On

Turn on data logging and begin the logging process as follows:

1. Press SETUP key to display the Setup List screen.

«««««SETUP LIST«««««
Temperature Units
Pressure Units
Pollution Units
Language
Date
Time
O2 Reference
Test ID
Display Timeout
Display Format
Primary Air
ª Data Logging
Statistics
User Name
Keypad Sound
High Res NOX Enabl
Print Pressure
Information

2. Use ∧∨ keys to place cursor next to “Data Logging”; then press ENTER to
display the Logging screen.

3. Press ∨ key to place cursor next to “On”; then press ENTER to display the
Logging menu screen.

Logging
Off
ª On

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23

4. Use ∧∨ keys to place cursor next to one of the following three methods of
storing test data:

Logging
ª Internal
PC
Both

• Internal: Stores test data in the analyzer’s internal memory (over

1000 data sets can be saved).

• PC: Sends test data out the analyzer’s RS232 port to a personal

computer. Before using this method, however, a personal computer
must be connected to the analyzer and configured to store received
data on its hard drive (refer to Section 2.11 Downloading Data to a
Personal Computer).

• Both: Stores test data in the analyzer’s internal memory, and also

sends the test data out the analyzer’s RS232 port.

After choosing the logging method, press ENTER to make the selection

and display the Logging Interval screen.

5. The default interval (the time period between measurements) is
10 minutes. To change this value, use

∧∨ keys to select either 1, 5, 10, 15,
30 seconds, 1, 2, 5, 10, 15, 30 minutes, or 1 hour. Then press ENTER to
make the selection and display the Logging Duration screen.

Logging Interval

10 min

6. The logging duration is the length of time allocated to collecting data. Use
∧∨ keys to select either 1, 5, 10, 15, 30 minutes, 1, 2, 5, 10, 24, 48, or

the
72 hours. Then press ENTER to make the selection and display the
Logging Summary screen.

Note: The duration value can never be less than the interval.

Logging Duration

2 hr

7. The Logging Summary screen shows both the logging interval and

duration as chosen in Steps 5 and 6. For example: if the interval was set
to 10 minutes, and the duration set for 2 hours, then a combustion test
will be conducted every 10 minutes over a 2 hour period — for a total of
12 readings. To change either the interval or duration value, press ESC
to abort the logging process and redisplay the first Logging screen.

Logging Summary
Interval 10 min
Duration 2 hr
Press ENTER to start

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8. With the analyzer set up per Section 2.4 Performing a Combustion Test,

press ENTER key to begin testing and logging.

«LOG«««(0025)««NGAS«

This display shows that the analyzer is logging and currently saving data
to internal memory location 25. Observe that the memory location
number will increment as data is being saved. Note that if all memory
locations are used before the end of the logging duration, then “(xxxx)”
appears in place of the memory location number, indicating a memory
over-range condition.

«LOG«««(-PC-)««NGAS«

This display shows that the analyzer is logging data, and that the data is
being sent to only a personal computer.

Tip: Logging can be stopped without loosing data that has already been
collected by pressing the ESC key.

9. At the conclusion of the logging process, the message “Logging Complete”

will appear. And if data was being stored in the analyzer’s internal
memory, then the message “Data in memory nnnn to nnnn” will also
appear — where nnnn denotes the internal memory locations that
contain the logged data. Press ENTER to leave logging and display the
Combustion Test HOLD screen.

2.12.2 Turning Data Logging Off

Data logging is automatically turned off . . .

• at the end of the logging process when the ENTER key pressed.

• if the logging process is interrupted by pressing the ESC key.

Note: If the logging process is interrupted, it cannot be resumed without first
turning logging back on per Section 2.12.1.

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25

Field

Data Name or Value

Label in Column
Heading

1

Test ID Line 1 (up to 20 characters)

TESTID1

2

Test ID Line 2 (up to 20 characters)

TESTID2

3

Test ID Line 3 (up to 20 characters)

TESTID3

4

Fuel Name

FUEL

5

Temperature Unit of Measure used in fields 14 &15

TEMP UNIT

6

Pressure Unit of Measure used in field 31

PRESS UNIT

7

Pollution Unit of Measure used in fields 11, 18 thru 21,

POLL UNIT

8

Date of Test

DATE

9

Time of Test

TIME

10

O2 Concentration in %

O2

11

CO Concentration

CO

12

Combustion Efficiency in %

EFF

13

CO2 Concentration in %

CO2

14

Stack Temperature

TSTACK

15

Primary Air Temperature Measurement Source

TAIR SOURCE

16

Primary Air Temperature

TAIR

17

Excess Air in %

EA

18

NO Concentration

NO

19

NO2 Concentration

NO2

20

NOx Concentration

NOX

21

SO2 Concentration

SO2

22

Hydrocarbon (combustibles) Level in % Gas

HC

23

O2 Reference for CO in Field 24

CO(O2R)

24

CO Concentration Referenced to O2

CO(O2)

25

O2 Reference for NO, NO2 and NOx in Fields 26, 27 & 28

NOX(O2R)

26

NO Concentration Referenced to O2

NO(O2)

27

NO2 Concentration Referenced to O2

NO2(O2)

28

NOx Concentration Referenced to O2

NOX(O2)

29

O2 Reference for SO2 in Field 30

SO2(O2R)

30

SO2 Concentration Referenced to O2

SO2(O2)

31

Pressure (Draft) Measurement

PRESSURE

2.13 Importing Saved Data Into a Spreadsheet

A text file that was created as described in either Section 2.11 Downloading
Data to a Personal Computer, or Section 2.12 Data Logging can be imported

into spreadsheet programs that are capable of importing comma-delimited
files. Note that each data record consists of 31 fields, some of which may be
blank for different tests and analyzer configurations.

TABLE 1. COMMA-DELIMITED FIELDS

24, 26, 27, 28 & 30

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TESTID1

TESTID2

TESTID3

FUEL

TEMP UNIT

PRESS UNIT

Customer Name

Address

Burner Number

Natural Gas

°F

inwc

POLL UNIT

DATE

TIME

O2

CO

EFF

CO2

TSTACK

TAIR SOURCE

ppm

01/14/00

2:45:30 PM

4

12

82.2

9.5

374

(T)

TAI R

EA

NO

NO2

NOX

SO2

HC

CO(O2R)

CO(O2)

68

21

18 6 24 1 0.01 3 13

NOX(O2R)

NO(O2)

NO2(O2)

NOX(O2)

SO2(O2R)

SO2(O2)

PRESSURE

3

19 6 25 3 1

–0.25

–0.25

TABLE 2. TYPICAL SPREADSHEET FOR THE ECA 450*

Customer Name Address Burner Number inwc

Line 1: Column Headings

*

Line 2: Typical Combustion Test Record with Pressure
Line 3: Typical Pressure-Only Measurement

The following describes how to generate a spreadsheet from a comma­delimited text file using Microsoft Excel 97. If you are using a different
spreadsheet program, then please refer to its instruction manual for
information on how to import comma-delimited text files.

Tip: If the text file was saved with the filename extension “CSV” as described
in Section “2.11 Downloading Data to a Personal Computer,” a spreadsheet
will automatically be created when that file is opened in Microsoft Excel 97.

1. Start Microsoft Excel 97.

2. Click File, then click Open to display the Open dialog box.

3. Change the Files of type: to Text Files. Then navigate to the directory

containing the text file to be imported.

4. Double-click the desired filename to display the Text Import Wizard –

Step 1 of 3 dialog box.

5. Select the Delimited radio button; then click Next to display the Text

Import Wizard – Step 2 of 3 dialog box.

6. Under Delimiters, select the Comma check box. Then click Next to

display the Text Import Wizard – Step 3 of 3 dialog box.

7. Click Finish to create the spreadsheet.

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ECA 450 Operation

27

2.14 Primary Air Temperature Measurement

To properly calculate net stack temperature, the analyzer must know the
burner’s primary air temperature. The following sections describe four
methods of measuring and supplying this temperature value to the analyzer.

2.14.1 Thermocouple Method

A thermocouple that is plugged into the T-AIR connector (see Figure 1-1)
provides the analyzer with the most up-to-date primary air temperature
information for combustion efficiency calculation purposes. Refer to Section

1.5.2 T-AIR.

If the burner’s primary-air supply is being drawn in from the room, then
simply place the thermocouple where it can sample room air. If, however, the
air supply is being drawn in from an outside source, where the temperature
is different from that of room air, then immerse the thermocouple into the
burner’s primary-air stream.

Note that when a thermocouple is plugged into the T-AIR connector, its
temperature reading takes priority over all other methods of temperature
measurement.

When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,
the designation (T) will appear to the left of the temperature value. The letter
“T” signifies that a Thermocouple is being used to measure the primary air
temperature.

For example:

T-AIR 86.5 °F (T)

2.14.2 Probe Thermocouple Method

This method has an operator taking a one-time primary air temperature
measurement using the probe’s T-STACK thermocouple, and then storing the
measurement in the analyzer’s temperature memory buffer.

When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,
the designation (M) will appear to the left of the temperature value. The
letter “M” signifies that the primary air temperature value was Measured.

For example:

T-AIR 86.5 °F (M)

Measure the primary air temperature using the probe’s thermocouple, and
store that measurement as follows:

1. Press SETUP key to display the Setup List screen.

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2. Use ∧∨ keys to place cursor next to “Primary Air”; then press ENTER to

display the Primary Air screen.

Note: The message “Primary Air is measured by TC” will appear if a
thermocouple is plugged into the T-AIR socket. This thermocouple must be
removed to continue this procedure.

«««««SETUP LIST«««««
Temperature Units
Pressure Units
Pollution Units
Language
Date
Time
O2 Reference
Test ID
Display Timeout
Display Format
ª Primary Air
Data Logging
Statistics
User Name
Keypad Sound
High Res NOX Enabl
Print Pressure
Information

3. Use ∧∨ keys to place cursor next to “Measure”; then press ENTER to

display the message “Place probe in primary air stream then press
ENTER.”

Primary Air
ª Measure
Enter

Place probe in
primary air stream
then press ENTER

4. As instructed above, place probe into primary air stream; then press

ENTER to display the probe’s current temperature measurement.

Primary Air
Temperature
XXX.X °F
Press ENTER to save

Where: XXX.X = the temperature being measured by the probe.

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ECA 450 Operation

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5. Wait until temperature display stabilizes; then press ENTER to save the

displayed temperature value in the analyzer’s temperature memory
buffer and return to the Setup List screen.

Note: The temperature memory buffer is cleared when the analyzer is
turned off, or when the T-AIR thermocouple is installed after the
measured number is saved.

2.14.3 Thermometer Method

This method has an operator taking a one-time primary air temperature
measurement using a thermometer, and then manually entering the
measurement into the analyzer’s temperature memory buffer.

When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,
the designation (E) will appear to the left of the temperature value. The letter
“E” signifies that the primary air temperature value was manually Entered.

For example:

T-AIR 86.5 °F (E)

Measure the primary air temperature using a thermometer, and manually
enter that value as follows:

1. Use a thermometer to measure the primary air temperature.

2. Press SETUP key to display the Setup List screen.

3. Use ∧∨ keys to place cursor next to “Primary Air”; then press ENTER to

display the Primary Air screen.

Note: The message “Primary Air is measured by TC” will appear if a
thermocouple is plugged into the T-AIR socket. This thermocouple must be
removed to continue this procedure.

«««««SETUP LIST«««««
Temperature Units
Pressure Units
Pollution Units
Language
Date
Time
O2 Reference
Test ID
Display Timeout
Display Format
ª Primary Air
Data Logging
Statistics
User Name
Keypad Sound
High Res NOX Enabl
Print Pressure
Information

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4. Use ∧∨ keys to place cursor next to “Enter”; then press ENTER to display

the Primary Air Temperature screen.

Primary Air
Measure
ª Enter

5. Press ENTER to move the cursor into the temperature data field; then use
∧, ∨ , <, and > keys as necessary to enter the temperature value that

the
was measured in Step 1. Note that leading zeros should be entered as
either a numerical 0 or a blank space.

For example: a primary air temperature of 35.5 °F should be entered as

035.5 in the display.

Primary Air
Temperature

035.5 °F

6. Press ENTER to save the displayed temperature value in the analyzer’s

temperature memory buffer and return to the Setup List screen.

Note: The temperature memory buffer is cleared when the analyzer is
turned off, or when the T-AIR thermocouple is installed after the entered
number is saved.

2.14.4 Internal Temperature Sensor Method

If a thermocouple is not plugged into the T-AIR connector, and there is no
data stored in the temperature memory buffer, then the analyzer defaults to

the instrument’s internal temperature as measured on the main printed
circuit board.

When viewing the T-AIR value on the Combustion Test HOLD/RUN screen,
the designation (I) will appear to the left of the temperature value. The letter
“I” signifies that the primary air temperature value was measured Internally.

For example:

T-AIR 86.5 °F (I)

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2.15 Differential Pressure Measurement

To measure the differential pressure between two confined areas, do the
following:

1. Press PRESSURE key to display the Pressure screen.

««««««PRESSURE««««««

n.nn xxxx

Where: n.nn = current pressure reading
xxxx = pressure units (refer to Section 2.17.2)

2. If desired, the pressure sensor can be zeroed as described below. To skip

the zeroing procedure, proceed to Step 3.

a) With Pressure screen displayed, again press PRESSURE key to

display the Pressure Zero screen.

Pressure Zero

Disconnect Hose
Then Press ENTER

b) Disconnect all hoses from the ∆P REF and PRESSURE connectors.

This step ensures that both of these connectors are sampling the same
pressure.

c) Press ENTER to zero pressure sensor to atmospheric pressure; after

which, reconnect probe hose that was removed in Step 3b.

Reconnect Hose

3. Connect pressure hose assembly P/N 0024-1103 to analyzer’s ∆P REF

connector (see Figure 1-1). Then insert open end of this hose into area
being used as the reference pressure.

4. Insert probe into area whose pressure is to be measured.

5. The Pressure screen is now displaying the differential pressure between

the two areas. Positive readings indicate that the pressure of the area
being measured is higher than the reference area, while negative
readings indicate the pressure is lower than the reference.

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2.16 Statistics Mode

The Statistics mode configures the ECA 450 to perform a statistical analysis
of measured emissions data taken over a preset interval and duration. At the
end of the prescribed duration, the average and standard deviation are
calculated for each gas measured and shown on the front panel display.

Turn ON the Statistics mode and begin the statistical analysis process as
follows:

1. Press the SETUP key to display the Setup List screen.

«««««SETUP LIST«««««
Temperature Units
Pressure Units
Pollution Units
Language
Date
Time
O2 Reference
Test ID
Display Timeout
Display Format
Primary Air
Data Logging
ª Statistics
User Name
Keypad Sound
High Res NOX Enabl
Print Pressure
Enhanced Printout
Information

2. Use ∧∨ keys to place cursor next to “Statistics”; then press ENTER to

display the Statistics screen.

3. Press ∨ key to place cursor next to “On”; then press ENTER to display the

Statistics Interval screen.

Statistics

Off
ª On

4. The default interval (the time period between measurements) is

10 seconds. To change this value, use the
30 seconds, 1, 2, 5, 10, 15, 30 minutes, or 1 hour. Then press ENTER to
make the selection and display the Statistics Duration screen.

Statistics Interval

10 sec

∧∨ keys to select 1, 5, 10, 15,

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5. The statistics duration is the length of time allocated to collecting data.

∧∨ keys to select desired duration; then press ENTER to make the

Use
selection and display the Statistics Summary screen.

Note: The minimum and maximum duration values are dependent on the
interval. The duration can never be less than the interval, and cannot
record more than 120 readings.

Statistics Duration

5 min

6. The Statistics Summary screen shows both the interval and duration as

chosen in Steps 4 and 5. For example: if the interval was set to
10 seconds, and the duration set for 5 minutes, then emission data will be
collected every 10 seconds over a 5 minute period — for a total of 30
readings from which the average and standard deviation are calculated.
To change the value of either the interval or duration, press ESC to
redisplay the first Statistics screen and repeat Steps 3, 4 and 5.

Statistics Summary
Interval 10 sec
Duration 5 min
Press ENTER to start

7. With the analyzer set up per Section 2.4 Performing a Combustion Test,

press ENTER to begin collecting data for statistical analysis. Before data
is collected, however, the ECA 450 first waits 60 seconds to allow the
sensor readings to stabilize.

Stabilizing Sensors

START in 60 SEC

After 60 seconds as elapsed, the front panel now shows the data as it’s
being collected. Use the

∧∨ keys to scroll through the readings on the

display.

«STAT«(0010)«««NGAS«

In this example, the top line of the display shows that the analyzer is in
its statistics mode; currently taking reading #10; with natural gas as the
fuel. Observe that the reading number increments as data is being
collected at the chosen interval and stored in memory.

Tip: Press ESC to abort the statistical analysis process. At this time the
Statistics mode is turned OFF and the message “Stats Interrupted” is
displayed. Press ENTER to return to the Combustion Test HOLD screen.

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8. At the conclusion of the data collection process, the ECA 450 calculates

the average and standard deviation values of the emissions data just
recorded. A Final Statistics screen then appears that shows the average
and one standard deviation of each gas measured; the number of readings
taken; and the duration of the test. Use the
readings on the display.

If a sensor goes into over range or the calculated standard deviation
exceeds 999.9, the display will show “– – – – –” or “xxxxx” respectively for
the average and standard deviation.

««Final Statistics««

AVG 1SD
O2(%) 14.5 0.3
CO(ppm) 10 1.3
NO(ppm) 37 0.3
NO2(ppm) 6 0.3
NOX(ppm) 43 1.5
SO2(ppm) 0 0.0
HC(%) 0.10 0.01
# or Rdgs 30
Duration 5 min

In this example, the average oxygen reading was 14.5% with a one
standard deviation of 0.3 — meaning that there is a 68% chance the
oxygen readings taken during the sampling duration were between 14.2
and 14.8% (AVG ± 1SD), and a 95% chance the oxygen readings were
between 13.9 and 15.1% (AVG ± 2SD).

9. If desired, press PRINT to obtain a hard copy of the Final Statistics

screen.

Note: The data shown in the Final Statistics screen cannot be saved.

10. Press ENTER to display the Combustion Test HOLD screen. At this time

the Statistics mode is automatically turned OFF and all statistical data is
erased.

∧∨ keys to scroll through the

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2.17 Setting Up the Analyzer

The analyzer has been set up at the factory for the following defaults:

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

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

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

Language ..................................... English

Date ............................................. Current date

Time ............................................. Current Eastern Standard Time

Reference ................................ 0% for all gases

O

2

Test ID ......................................... (blank)

Display Timeout ......................... Never (no timeout)

Display Format ........................... Order of test data:

O2, CO, EFF, CO2, T-STACK, T-AIR, EA,
NO, NO2, NOX, SO2, HC, CO(0), NO(0),

NO2(0), NOX(0), SO2(0)

Primary Air ................................. No preset

Data Logging ............................... Off

Statistics...................................... Off

User Name .................................. (blank)

Keypad Sound ............................. On

High Resolution NOx Enable ..... Off

Print Pressure ............................. Off

Values for these parameters can be entered or changed by selecting the
desired parameter from the Setup List screen, which is displayed by pressing
the SETUP key.

«««««SETUP LIST«««««
ª Temperature Units
Pressure Units
Pollution Units
Language
Date
Time
O2 Reference
Test ID
Display Timeout
Display Format
Primary Air
Data Logging
Statistics
User Name
Keypad Sound
High Res NOX Enabl
Print Pressure
Information

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2.17.1 Temperature Units

Select to display the temperature in either degrees centigrade (C) or
Fahrenheit (F) as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Temperature Units”; then press

ENTER to display the Temperature Units screen.

Temperature Units
°C
ª °F

3. Place cursor next to either “°C” or “°F”; then press ENTER to make the

selection and return to Setup List screen.

2.17.2 Pressure Units

Select to display pressure units in either inches of water column (inwc),
millibars (mb), Pascals (Pa), or hecto Pascals (hPa) as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Pressure Units”; then press ENTER

to display the Pressure Units screen.

Pressure Units
ª inwc
mb
Pa
hPa

3. Use ∧∨ keys to place cursor next to either “inwc”, “mb”, “Pa”, or “hPa”;

then press ENTER to activate selection and return to Setup List screen.

2.17.3 Pollution Units

The analyzer is capable of converting the measured ppm levels of CO, NO,

, and SO2 to various pollution units using CFR40 Part 60 emission

NO

2

factors. Note that the pollution-unit conversions for NO, NO
based on the molecular weight of NO

.

2

Select to display the measured levels of CO, NO, NO

, and SO2 in either parts

2

per million (ppm), pounds of pollutant per million BTU (#/Mbtu), milligrams

3

of pollutant per cubic meter of gas (mg/m

), or grams of pollutant per

gigajoule (g/GJ) as follows:

4. Press SETUP key to display the Setup List screen.

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and NOx are

2

ECA 450 Operation

37

5. Use ∧∨ keys to place cursor next to “Pollution Units”; then press ENTER

to display the Pollution Units screen.

Pollution Units

ª ppm
#/Mbtu
mg/m3
g/GJ

6. Use ∧∨ keys to place cursor next to either “ppm”, “#/Mbtu”, “mg/m3”, or

“g/GJ”; then press ENTER to make the selection and return to Setup List
screen.

2.17.4 Language

Information on the display screen can be shown in either English, Spanish, or
French. Select the desired language as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Language”; then press ENTER to

display the Language screen.

Language

ª English
Español
Français

3. Use ∧∨ keys to place cursor next to either “English”, “Español”, or

“Français”; then press ENTER to activate selection and return to Setup
List screen

2.17.5 Date

The date is stored in the format: month, day, year (MM/DD/YY). Set the
analyzer’s internal clock to the current date as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Date”; then press ENTER to display

the analyzer’s current date setting.

Date

ª 05/30/00

3. Press ENTER to stop clock and move cursor over first digit of date

display.

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4. Press > key to place cursor on the month, day, or year digit to be changed;

then, use
until all digits are set correctly.

5. Press ENTER to save selections and start clock. Then press ESC to return

to Setup List screen.

∧∨ keys to set that digit to desired number. Repeat this step

2.17.6 Time

Time is stored in the format HH:MM:SS am/pm. Set the analyzer’s internal
clock to the current time as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Time”; then press ENTER to display

the analyzer’s current time setting.

Time

ª 11:45:30 am

3. Press ENTER to stop clock and move cursor over first digit of time

display.

4. Press > key to place cursor over the hour, minute, or second digit to be

changed. Then, use
Repeat this step until all digits are set correctly.

5. To change am/pm setting, first use the > key to place cursor over first

letter of am or pm; Then use the

6. Press ENTER to save selections and start clock. Then press ESC to return

to Setup List screen.

∧∨ keys to set that digit to the desired number.

∧∨ keys to select correct value.

2.17.7 O2 Reference

The calculated values of CO, NOx, and SO
a specific Oxygen percentage of between 0 and 15%. Set up an Oxygen
reference for each gas as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “O2 Reference”; then press ENTER to

display the O

O2 Reference
ª CO Ref to O2
NOx Ref to O2
SO2 Ref to O2

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Reference menu.

2

can be individually referenced to

2

ECA 450 Operation

39

3. Use ∧∨ keys to place cursor next to the desired gas whose Oxygen

reference is to be set; then press ENTER to display the O

Reference

2

screen for that gas.

CO Ref to O2

n %

Where: n = Oxygen reference

4. Use ∧∨ keys to choose desired Oxygen reference value from 0 to 15%.

5. Press ENTER to make the selection and return to O

Reference gas menu

2

screen.

6. Repeat Steps 3 thru 5 for remaining gases.

7. After an Oxygen reference has been set for each gas, press ESC to return

to the Setup List screen.

2.17.8 Test ID

Test records can be identified (e.g., the customer’s name, burner number, and
location) by manually entering up to three lines of text, with each line
containing a maximum of 20 alphanumerical characters. This information
will be associated with all succeeding test records, and will appear at the top
of each test record when printed, and at the bottom of saved test records
when viewed on the display. The chosen Test ID remains in effect until such
time as the Test ID is unselected, a new Test ID is selected, or the
instrument is shut off.

Up to 32 Test IDs can be pre-entered for later retrieval.

All pre-entered Test IDs can be downloaded to a personal computer as an
ASCII text file for storage and printing.

2.17.8.1 Enter / Edit Test ID Information

Enter or edit Test ID information as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Test ID”; then press ENTER to

display the Test ID menu.

Test ID

Select Test ID
ª Edit Test ID
Transmit Test ID
Clear Test ID

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3. Use ∧∨ keys to place cursor next to “Edit Test ID”; then press ENTER to

display the Edit Test ID menu, which shows the first line of each Test ID
record.

Edit Test ID
ª 0 Customer1

1 .....

2 .....

31 .....

Note: Five periods (. . . . .) are used to identify empty lines.

4. Use ∧∨ keys to choose which Test ID record to edit; then press ENTER to

display all three lines of that record.

Edit Test ID
ª Customer1
Address
Burner Location

5. Use ∧∨ keys to choose which of the three Test ID lines to edit; then press

ENTER to begin editing that line.

6. Use ∧∨ keys to display first desired character. Then press > key to move

to next character position. Repeat this step until line is complete
(maximum of 20 alphanumerical characters).

7. When finished, press ENTER to save information and move cursor back to

left of screen.

8. At this time, either return to Step 5 to choose another line to edit, or end

this procedure by pressing the ESC key as necessary to return to the
Setup List screen.

2.17.8.2 Select Test ID

Choose which pre-entered Test ID to use as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place the cursor next to “Test ID”; then press ENTER to

display the Test ID menu.

Test ID
ª Select Test ID
Edit Test ID
Transmit Test ID
Clear Test ID

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3. Use ∧∨ keys to place cursor next to “Select Test ID”; then press ENTER to

display the Select Test ID menu, which shows the first line of each Test
ID record.

Select Test ID
ª 0 Customer1

1 .....

2 .....

31 .....

NO Test ID

Note: Five periods (. . . . .) are used to identify empty records.

4. Use ∧∨ keys to choose a pre-entered Test ID, or choose “NO Test ID” to

deselect a previously chosen record; then press ENTER to make the
selection and return to the Test ID menu.

Note: NO Test ID is automatically selected when the analyzer is
turned on.

5. Press ESC to end this procedure and return to Setup List screen.

2.17.8.3 Transmit Test ID

Before the Test ID information can be transmitted, a personal computer must
be connected to the analyzer and set up to receive the data. (refer to Section

2.11 Downloading Data to a Personal Computer).

Download all pre-entered Test ID records to a personal computer as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Test ID”; then press ENTER to

display the Test ID menu.

Test ID
Select Test ID
Edit Test ID
ª Transmit Test ID
Clear Test ID

3. Use ∧∨ keys to place cursor next to “Transmit Test ID”; then press

ENTER to start transmitting. At this time the analyzer displays
“Transmitting…” while also displaying the Test ID number that is
currently being transmitted.

Transmitting...

Test ID #: 0
Press ESCAPE to END

4. Observe that the computer displays the data as it is being received. After

all data has been transmitted, the analyzer re-displays the Test ID menu.

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5. The computer’s communication program and the connection to the ECA

450 can now be closed.

6. Press ESC to end this procedure and return to Setup List screen.

2.17.8.4 Clearing Test ID Information

Clear all or individual pre-entered Test ID information from memory as
follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Test ID”; then press ENTER to

display the Test ID menu.

Test ID
Select Test ID
Edit Test ID
Transmit Test ID
ª Clear Test ID

3. Use ∧∨ keys to place the cursor next to “Clear Test ID”; then press

ENTER to display the Clear Test ID menu.

Clear Test ID
ª Individual Records
All Records

4. Do one of the following to either clear individual records or all records:

- Individual Records: Use ∧∨ keys to place cursor next to “Individual
Records”; then press ENTER to display the Clear Individual menu.
Again use
ENTER to clear that record.

Clear Individual
ª 0 Customer1

1 .....

2 .....

31 .....

- All Records: Use ∧∨ keys to place cursor next to “All Records”; then
press ENTER to display the Clear All menu. Again use the
time to choose “Yes”; then press ENTER to clear all records.

Clear All
ª No
Yes

5. Press ESC to end this procedure and return to Setup List screen.

∧∨ keys, this time to choose the record to clear; then press

∧∨ keys, this

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2.17.9 Display Timeout

To conserve battery life, the vacuum fluorescent display panel can be
configured to turn itself off after 5 to 60 minutes of keyboard inactivity.
Select the display’s time-delay off period as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Display Timeout”; then press ENTER
to show the Display Timeout screen.

Display Timeout

n

Where: n = current timeout period

3. Use ∧∨ keys to select desired timeout period in 5 minute increments from
“Never” (no timeout) to “60” minutes; then press ENTER to make the
selection and return to Setup List screen.

2.17.10 Display Format

The order in which data is displayed in the Combustion Test HOLD/RUN
screen can be rearranged to better suit an operator’s needs. The default order
of this data is as follows:

Note: Depending on what sensors are installed, some of the data listed below
may not be displayed.

O2 = % Oxygen
CO = Carbon Monoxide
EFF = % Combustion Efficiency
CO2 = % Carbon Dioxide
T-STACK = Stack Temperature
T-AIR = Room/Primary-Air Temperature
EA = % Excess Air
NO = Nitric Oxide
NO2 = Nitrogen Dioxide
NOX = Oxides of Nitrogen (combination of NO and NO
SO2 = Sulfur Dioxide
HC = % Combustibles (Methane based)
CO(n) = Carbon Monoxide content referenced to a percentage of Oxygen
NO(n) = Nitric Oxide referenced to a percentage of Oxygen
NO2(n) = Nitrogen Dioxide referenced to a percentage of Oxygen
NOX(n) = Oxides of Nitrogen (combination of NO and NO2) referenced to

SO2(n) = Sulfur Dioxide referenced to a percentage of Oxygen

a percentage of Oxygen

)

2

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2.17.10.1 Changing Display Format

Change the order in which the data is displayed in the Combustion Test
HOLD/RUN screen as follows:

Note: Changing the order of the Combustion Test Data as displayed on the
analyzer’s front panel does not change the order in which the data is printed
or downloaded.

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Display Format”; then press ENTER
to show Display Format screen.

Display Format
ª Edit Format
Reset Format

3. Use ∧∨ keys to place cursor next to “Edit Format”; then press ENTER to
show Edit Display Format screen, where the current order of the
Combustion Test Data is shown numbered from 0 to 23.

Edit Display Format
ª 0 O2
1 CO
2 EFF

23

4. Change data shown for a particular location by first using ∧∨ keys to
place cursor next to desired numbered location. Next, press ENTER to
move cursor into that location’s data field; then use
desired data to appear at that location. Finally, press ENTER to make the
selection and move cursor back to left of screen.

5. Change data displayed at other numbered locations by repeating Step 4.

6. When finished, press ESC as necessary to return to Setup List screen.

2.17.10.2 Resetting Display Format Back to Factory Default

Return the display format back to its factory-default order as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Display Format”; then press ENTER
to show Display Format screen.

Display Format
Edit Format
ª Reset Format

3. Use ∧∨ keys to place cursor next to “Reset Format”; then press ENTER to
show Reset Display Format screen.

∧∨ keys to choose

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ECA 450 Operation

45

4. Use ∧∨ keys to choose “Yes”; then press ENTER to reset the display and
return to the Display Format screen.

Reset Display Format
No
ª Yes

5. When finished, press ESC to return to the Setup List screen.

2.17.11 Primary Air

Refer to Section 2.14 Primary Air Temperature Measurement.

2.17.12 Data Logging

Refer to Section 2.12 Data Logging.

2.17.13 Statistics

Refer to Section 2.16 Statistics Mode.

2.17.14 User Name

The name of the user or owner of the analyzer (e.g., company name, address,
and phone number) can be stored in memory by manually entering up to
three lines of text, with each line containing up to 20 alphanumerical
characters. This information will appear at the top of each printout, until
such time as new information is entered.

2.17.14.1 Enter / Edit User Name Information

Enter or edit a User Name as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “User Name”; then press ENTER to
display the User Name menu.

User Name
ª Edit User Name
Clear User Name

3. Use ∧∨ keys to place cursor next to “Edit User Name”; then press ENTER
to display the Edit User Name menu, which shows the three User Name
lines that can be edited.

Edit User Name
ª ABC Heating
Street Address
Town

Note: Five periods (. . . . .) are used to identify blank lines.

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Operation ECA 450

4. Use ∧∨ keys to choose which User Name line to edit; then press ENTER to
begin editing that line.

5. Use ∧∨ keys to display the first desired character. Then use the > key to
move cursor to the next character’s position. Repeat this step until the
line is complete (maximum of 20 characters).

6. When finished, press ENTER key to save the information just entered and
redisplay the User Name menu.

7. At this time, either return to Step 4 to choose another line to edit, or end
this procedure by pressing ESC.

2.17.14.2 Clear User Name Information

Clear all User Name information as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “User Name”; then press ENTER to
display the User Name menu.

User Name
Edit User Name
ª Clear User Name

3. Use ∧∨ keys to place cursor next to “Clear User Name”; then press
ENTER to display the Clear User Name confirmation screen.

4. Use ∧∨ keys to choose “Yes”; then press ENTER to clear all information.

Clear User Name
No
ª Yes

5. When finished, press ESC to return to the Setup List screen.

2.17.15 Keypad Sound

The audible sound used to signal when a keypad button is pressed can be
turned off and on as follows:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Keypad Sound”; then press ENTER to
display the Keypad Sound menu screen.

Keypad Sound
Off
ª On

3. Use ∧∨ keys to place cursor next to either “Off” or “On”; then press
ENTER to make the selection and return to the Setup List screen.

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ECA 450 Operation

47

2.17.16 High Resolution NOx Enable

When High Resolution NOx Enable is turned ON the ECA 450 will display
the values of NO, NO
these gases are <100 ppm. When a gas value becomes ≥100 ppm, the
resolution for that gas switches to 1 ppm.

When High Resolution NOx Enable is turned OFF, the display resolution for
NO, NO

and NOx is always 1 ppm.

2

Turn High Resolution NOx Enable ON or OFF as follows:

1. Press SETUP key to display the Setup List screen.

«««««SETUP LIST«««««
Temperature Units
Pressure Units
Pollution Units
Language
Date
Time
O2 Reference
Test ID
Display Timeout
Display Format
Primary Air
Data Logging
Statistics
User Name
Keypad Sound
ª High Res NOX Enabl
Print Pressure
Enhanced Printout
Information

2. Use ∧∨ keys to place cursor next to “High Res NOX Enabl”; then press
ENTER to display the High Res NOX Enable screen.

3. Use ∧∨ keys to place cursor next to “On” or “Off”; then press ENTER to
make the selection and be returned to the Setup List screen.

High Res NOX Enable

Off
ª On

4. Press RUN to exit the Setup List screen and display the Combustion Test
HOLD screen. Combustion efficiency and emissions testing can now be
performed as described in Section 2.4 Performing a Combustion Test.

and NOx at a resolution of 0.1 ppm when the values of

2

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Operation ECA 450

5. When High Resolution NOx Enable is turned ON, and when viewing the
Combustion Test RUN screen, observe in the example screens below that
if the value of NO, NO

0.1 ppm, but when a gas value is ≥100 ppm the resolution becomes 1 ppm.

«RUN«««««««««««NGAS«
NO 18.3 ppm
NO2 6.7 ppm
NOX 25.0 ppm

«RUN«««««««««««NGAS«
NO 131 ppm
NO2 73.0 ppm
NOX 204 ppm

, or NOx is <100 ppm, then the resolution is

2

2.17.17 Print Pressure

To choose whether or not the pressure reading is printed on the combustion
test printout (refer to Section 2.10 Printing Data), do the following:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Print Pressure”; then press ENTER
to display the Print Pressure screen.

Print Pressure
ª No
Yes

3. Use ∧∨ keys to place cursor next to either “No” or “Yes”; then press
ENTER to make the selection and return to the Setup List screen.

2.17.18 Information

To display the analyzer’s Serial Number, Part Number, Software Version,
and optional sensor(s) installed, do the following:

1. Press SETUP key to display the Setup List screen.

2. Use ∧∨ keys to place cursor next to “Information”; then press ENTER to
display the Information screen. Note that the information displayed for
your particular analyzer will vary from the one shown below.

Information
SN: EU1165
PN: 24-7221
Version: 1.00
Options:
COHI NO NO2 SO2 HC

3. Press ESC to return to the Setup List screen.

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ECA 450 Calibration

49

3 Calibration

Bacharach recommends that the ECA 450 be calibrated by your nearest
Bacharach Service Center (refer to Section 6.3). The analyzer, however, can
be calibrated in the field if your facility has the necessary equipment and
qualified personnel to perform the procedures described in this section.

Important! To prevent the loss of data during calibration, perform the
following procedures with a fully charged battery pack, or with the AC
adapter connected to the analyzer.

3.1 Initial Sensor Check

Important! Before turning on the analyzer or performing any of the calibration

procedures, ensure that the analyzer will be sampling fresh air and the probe
is at room temperature.

When the analyzer is first turned on and allowed to cycle through its
60 second warm-up period, and while sampling fresh air, the sensors are
checked (read) and calibrated (set) to the following ambient conditions:

• Oxygen sensor spanned to 20.9%

• All remaining gas sensors are zeroed

• Pressure sensor zeroed

If a sensor is found to be in error during warm up, an error message will
appear at the bottom of the screen describing the nature of the problem (refer
to Section 5.4 Troubleshooting Guide). Correct any sensor errors before
proceeding with these calibration procedures.

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Calibration ECA 450

OPT T-STACK T-AIR

PRESSUREGAS

P REF

ECA 450

MENU

PRINT

I/O

RUN

SAVE

1

2 3 4 5

Leave Top
Port Open

3

3

GAS
FIXTURE

GAS
INLET
PORT

RS 232

POWER

OPT T-STACK T-AIR

PRESSUREGAS

P REF

ECA 450

MENU

PRINT

I/O

RUN

SAVE

PRESSURE
INLET
PORT

Parts Shown:

1. Gas Cylinder

2. Regulator*

3. Tubing*

4. Tee*

5. Flowmeter*

6. Fitting, Gas*

7. Fitting, Pressure*
* Contained in Calibration Kit

3

4

7

3

Micro manometer

Bellows

6

PRESSURE
FIXTURE

3.2 Calibration Fixtures

A gas and pressure fixture will be required to perform the various calibration
procedures described in the sections that follow.

Parts Required:

• Calibration Kit (refer to Section 6.2)

• Calibration Gas (refer to Section 6.2)

• Bellows

• Micro manometer

Procedure:

Assemble the appropriate fixture as required by the calibration procedure
being performed. See Figure 3-1.

Figure 3-1. Calibration Fixtures

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ECA 450 Calibration

51

3.3 Starting and Ending a Calibration Procedure

Start any calibration procedure by first pressing the CALIBRAT E shortcut
key. Before calibration can begin, however, a 4-place alphanumerical
password must be entered. Enter the password by first pressing the ENTER
key, and then using the
displayed.

Note: The calibration password is provided on a separate card supplied with
the analyzer.

««««CALIBRATION«««««

« PASSWORD ----

Again press the ENTER key. If the correct password was entered, the
following Calibration List screen will appear.

Note: Sensors that are not installed will not appear in the Calibration List.

««CALIBRATION LIST««
ª Pressure
T-Stack
T-Air
HC
CO-LO
SO2
NO
NO2
CO-HI

Use ∧∨ keys until cursor is in front of desired calibration function; then press
ENTER to display that function’s corresponding Calibrate screen.

After the desired calibration procedures have been completed, press the ESC
key to return to the Combustion Test HOLD screen.

∧ ∨ and < > keys until the correct password is

3.4 Calibrate Pressure Sensor

This procedure calibrates the pressure sensor to a known pressure value.

Material Required:

• Calibration Pressure Fixture (Section 3.2)

• Bellows (adjustable)

• Micro manometer Range: ±8 in. H

Accuracy: ±0.01 H

Procedure:

1. Enter Calibration List screen; then choose Pressure per Section 3.3 to
display the PRESSURE CALIBRATE screen.

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O column (±20 mb)

2

O column (±0.025 mb)

2

Calibration ECA 450

2. With the Calibrate Pressure screen displayed, and with the hose from the
calibration fixture connected to the analyzer’s PRESSURE port, adjust
the bellows for a micro manometer reading of −4 in. H
(−10 mb).

3. Wait until the Measured reading on the screen stabilizes. Then use the
∧∨ and < > keys to enter an Applied value that equals the micro
manometer reading.

The calibration range is from –6 to –2 in. H
applied value that is outside this range will cause the message “Bad
Calibration Entry” to appear.

Typical Calibrate Pressure Screen During Calibration:

«CALIBRATE PRESSURE«
Measured -3.40 inwc
Applied -4.00 inwc

4. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

5. Remove calibration equipment.

O column (−15 to −5 mb). An

2

O column

2

3.5 Calibrate T-Stack (Stack Temperature) Channel

The following procedure first zeros and then spans the stack-temperature
channel to known temperature values.

Material Required:

• Thermocouple Simulator (K-type) Range: 0 to 600 °F

Accuracy: ±0.5 °F

TS-Zero Procedure:

1. Adjust simulator to 32 °F (0 °C).

The calibration range is from 32 to 41 °F (0 to 5 °C). Any attempt to
calibrate outside this range will cause the message “Bad Calibration
Entry” to appear.

2. Plug simulator’s K-type connector into analyzer’s T-STACK jack (see
Figure 1-1).

3. Enter Calibration List screen; then choose T-Stack per Section 3.3 to
display the CALIBRATE TS-ZERO screen.

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ECA 450 Calibration

53

4. Wait until Measured reading on screen stabilizes. Then use the ∧∨ and
< > keys to enter an Applied value of 32 °F (0 °C).

Typical Calibrate TS-Zero Screen During Calibration:

«CALIBRATE TS-ZERO««
Measured 31°F
Applied 032°F

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
followed by the CALIBRATE TS-SPAN screen.

TS-Span Procedure:

6. Adjust simulator to 572 °F (300 °C).

The calibration range is from 175 to 625 °F (79 to 329 °C). Any attempt to
calibrate outside this range will cause the message “Bad Calibration
Entry” to appear.

7. Wait until Measured reading on screen stabilizes. Then use the ∧∨ and
< > keys to enter an Applied value of 572 °F (300 °C).

Typical Calibrate TS-Span Screen During Calibration:

«CALIBRATE TS-SPAN««
Measured 560°F
Applied 572°F

8. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
followed by the Calibration List screen being redisplayed.

9. Remove calibration equipment.

3.6 Calibrate T-Air (Ambient Temperature) Channel

The following procedure first zeros and then spans the ambient-temperature
channel to known temperature values.

Material Required:

• Thermocouple Simulator (K-type) Range: 0 to 600 °F

Accuracy: ±0.5 °F

TA-Zero Procedure:

1. Adjust simulator to 32 °F (0 °C).

The calibration range is from 32 to 41 °F (0 to 5 °C). Any attempt to
calibrate outside this range will cause the message “Bad Calibration
Entry” to appear.

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Calibration ECA 450

2. Plug simulator’s K-type connector into analyzer’s T-AIR jack (see
Figure 1-1).

3. Enter Calibration List screen; then choose T-Air per Section 3.3 to
display the CALIBRATE TA-ZERO screen.

4. Wait until Measured reading on screen stabilizes. Then use the ∧∨ and
< > keys to enter an Applied value of 32 °F (0 °C).

Typical Calibrate TA-Zero Screen During Calibration:

«CALIBRATE TA-ZERO««
Measured 31.2°F
Applied 032.0°F

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
followed by the CALIBRATE TA-SPAN screen.

TA-Span Procedure:

6. Adjust simulator to 212 °F (100 °C).

The calibration range is from 194 to 230 °F (90 to 110 °C). An applied
value entry that is outside this range will cause the message “Bad
Calibration Entry” to appear.

7. Wait until Measured reading on screen stabilizes. Then use the ∧∨ and
< > keys to enter an Applied of 212 °F (100 °C).

Typical Calibrate TA-Span Screen During Calibration:

«CALIBRATE TA-SPAN««
Measured 200.0°F
Applied 212.0°F

8. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

9. Remove calibration equipment.

3.7 Calibrate HC Sensor

The following procedure spans the optional combustibles sensor to a known
gas level.

Material Required:

• Calibration Gas Fixture (Section 3.2)

• Gas Cylinder: 2.5% CH

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(50% LEL Methane) (refer to Section 6.2)

4

ECA 450 Calibration

55

Procedure:

1. Enter Calibration List screen; then choose HC per Section 3.3 to display
the CALIBRATE HC screen. At the conclusion of this step the pump
should be running.

2. Using the Gas Fixture shown in Figure 3-1, attach a CH

calibration gas

4

cylinder to the analyzer’s GAS inlet port.

3. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

4. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the
equals the concentration stamped on the CH

∧∨ and < > keys to enter an Applied value that

gas cylinder.

4

The calibration range is from 1 to 3%. An applied value that is outside
this range will cause the message “Bad Calibration Entry” to appear.

Typical Calibrate HC Screen During Calibration:

««««CALIBRATE HC««««
Measured 1.93 %
Applied 2.50 %

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

If the message “Sensor Output Low” or “Sensor Not Calibrated” appears,
refer Section “5.4 Troubleshooting Guide.”

6. Turn off regulator; then remove gas cylinder from calibration fixture.

3.8 Calibrate CO-LO Sensor

This screen is used to span the Carbon Monoxide Low channel (0 – 4,000 ppm
CO) to a known gas level. This procedure also includes H

Material Required:

• Calibration Gas Fixture (Section 3.2)

• Gas Cylinder: 500 ppm CO in air (refer to Section 6.2)

• Gas Cylinder: 1000 ppm CO & 1000 ppm H

in Nitrogen

2

(refer to Section 6.2)

Procedure:

1. Enter Calibration List screen; then choose CO-LO per Section 3.3 to
display the CALIBRATE CO-LO screen. At the conclusion of this step the
pump should be running.

2. Using the Gas Fixture shown in Figure 3-1, attach a CO-only calibration
gas cylinder to the analyzer’s GAS inlet port.

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compensation.

2

Calibration ECA 450

3. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

4. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the

∧∨ and < > keys to enter an Applied value that

equals the concentration stamped on the CO gas cylinder.

The calibration range is from 10 to 1500 ppm. An applied value that is
outside this range will cause the message “Bad Calibration Entry” to appear.

Typical Calibrate CO-LO Screen During Calibration:

«««CALIBRATE CO-LO««
Measured 493 ppm
Applied 00500 ppm

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the Test Gas CO/H2 screen is displayed.

6. Turn off regulator on CO calibration gas cylinder; then remove gas
cylinder from calibration fixture.

7. Attach a combination CO and H

calibration gas cylinder to calibration

2

fixture.

8. Use the ∧∨ and < > keys to enter a CO value that equals the CO
concentration stamped on the gas cylinder. Then press ENTER to display
the Calibrate H2 screen.

Typical Testgas CO/H2 Screen During Calibration:

«««TESTGAS CO/H2««««

--------------------

CO value 1000
Enter CO value

9. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

10. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the
equals the H

concentration stamped on the gas cylinder.

2

∧∨ and < > keys to enter an Applied value that

The calibration range is from 400 to 1500 ppm. An applied value that is
outside this range will cause the message “Bad Calibration Entry” to
appear.

Typical Calibrate H2 Screen During Calibration:

««««CALIBRATE H2««««
Measured 985 ppm
Applied 01000 ppm

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ECA 450 Calibration

57

11. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

If the message “Sensor Output Low” or “Sensor Not Calibrated” appears,
refer Section “5.4 Troubleshooting Guide.”

12. Turn off regulator; then remove gas cylinder from calibration fixture.

3.9 Calibrate SO2 Sensor

This procedure spans the optional Sulfur Dioxide sensor to a known gas level.

Note: The SO
installed.

Material Required:

• Calibration Gas Fixture (Section 3.2)

• Gas Cylinder: 100 ppm SO

Procedure:

1. Enter Calibration List screen; then choose SO2 per Section 3.3 to display
the CALIBRATE SO2 screen. At the conclusion of this step the pump

should be running.

2. Using the Gas Fixture shown in Figure 3-1, attach an SO
cylinder to the analyzer’s GAS inlet port.

3. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

4. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the
equals the concentration stamped on the SO

The calibration range is from 10 to 150 ppm. An applied value that is
outside this range will cause the message “Bad Calibration Entry” to
appear.

Typical Calibrate SO2 Screen During Calibration:

«««CALIBRATE SO2««««
Measured 98 ppm
Applied 00100 ppm

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

If the message “Sensor Output Low” or “Sensor Not Calibrated” appears,
refer Section “5.4 Troubleshooting Guide.”

6. Turn off regulator; then remove gas cylinder from calibration fixture.

sensor cannot be installed without the NO2 sensor also being

2

(refer to Section 6.2)

2

calibration gas

2

∧∨ and < > keys to enter an Applied value that

gas cylinder.

2

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Calibration ECA 450

3.10 Calibrate NO Sensor

The following procedure spans the optional Nitric Oxide sensor to a known
gas level.

Material Required:

• Calibration Gas Fixture (Section 3.2)

• Gas Cylinder: 250 ppm NO in Nitrogen (refer to Section 6.2)

Procedure:

1. Enter Calibration List screen; then choose NO per Section 3.3 to display
the CALIBRATE NO screen. At the conclusion of this step the pump
should be running.

2. Using the Gas Fixture shown in Figure 3-1, attach an NO calibration gas
cylinder to the analyzer’s GAS inlet port.

3. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

4. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the
equals the concentration stamped on the NO gas cylinder.

The calibration range is from 10 to 550 ppm. An applied value that is
outside this range will cause the message “Bad Calibration Entry” to
appear.

Typical Calibrate NO Screen During Calibration:

««««CALIBRATE NO««««
Measured 235 ppm
Applied 00250 ppm

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

If the message “Sensor Output Low” or “Sensor Not Calibrated” appears,
refer Section “5.4 Troubleshooting Guide.”

6. Turn off regulator; then remove gas cylinder from calibration fixture.

∧∨ and < > keys to enter an Applied value that

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ECA 450 Calibration

59

3.11 Calibrate NO2 Sensor

This screen is used to span the optional Nitrogen Dioxide sensor to a known
gas level.

Material Required:

• Calibration Gas Fixture (Section 3.2)

• Gas Cylinder: 100 ppm NO

Procedure:

1. Enter Calibration List screen; then choose NO2 per Section 3.3 to display
the CALIBRATE NO2 screen. At the conclusion of this step the pump
should be running.

2. Using the Gas Fixture shown in Figure 3-1, attach an NO
cylinder to the analyzer’s GAS inlet port.

3. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

4. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the
equals the concentration stamped on the NO

The calibration range is from 10 to 150 ppm. An applied value that is
outside this range will cause the message “Bad Calibration Entry” to
appear.

Typical Calibrate NO2 Screen During Calibration:

«««CALIBRATE NO2««««
Measured 98 ppm
Applied 00100 ppm

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

If the message “Sensor Output Low” or “Sensor Not Calibrated” appears,
refer Section “5.4 Troubleshooting Guide.”

6. Turn off regulator; then remove gas cylinder from calibration fixture.

(refer to Section 6.2)

2

calibration gas

2

∧∨ and < > keys to enter an Applied value that

gas cylinder.

2

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Calibration ECA 450

3.12 Calibrate CO-HI Sensor

This procedure spans the optional Carbon Monoxide High sensor (4,000 –
80,000 ppm CO) to a known gas level.

Material Required:

• Calibration Gas Fixture (Section 3.2)

• Gas Cylinder: 4,000 ppm CO in air (refer to Section 6.2)

Procedure:

1. Enter Calibration List screen; then choose CO-HI per Section 3.3 to
display the CALIBRATE CO-HI screen. At the conclusion of this step the
pump should be running.

2. Using the Gas Fixture shown in Figure 3-1, attach a CO calibration gas
cylinder to the analyzer’s GAS inlet port.

3. Adjust regulator of calibration fixture for a flow meter indication of
approximately 2 SCFH.

4. Wait until Measured reading on screen stabilizes (approximately
3 minutes). Then use the
equals the concentration stamped on the CO gas cylinder.

The calibration range is from 250 to 11,000 ppm. An applied value that is
outside this range will cause the message “Bad Calibration Entry” to
appear.

Typical Calibrate CO-HI Screen During Calibration:

«««CALIBRATE CO-HI««
Measured 3890 ppm
Applied 04000 ppm

5. Press ENTER to calibrate the analyzer’s Measured value to that of the
Applied value; after which the message “Good Calibration” should appear
along with the Calibration List screen being redisplayed.

If the message “Sensor Output Low” or “Sensor Not Calibrated” appears,
refer Section “5.4 Troubleshooting Guide.”

6. Turn off regulator; then remove gas cylinder from calibration fixture.

∧∨ and < > keys to enter an Applied value that

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ECA 450 Maintenance

4 Maintenance

Field maintenance of the ECA 450 is limited to the following:

• Battery charging

• Water Trap Filter replacement

• Printer Paper replacement

• Sensor replacement

• Cleaning the probe

• Resetting the microprocessor

• Replacing the internal particulate filter

All other maintenance should be performed by an authorized Bacharach
Service Center (Section 6.3).

4.1 Battery Charging

A fully charged battery pack will power the analyzer for a minimum of
8 hours. When the battery pack is just about depleted, the message “LOW
BATTERY” will appear at the bottom of the screen; after which, the analyzer
will operate from 5 to 15 minutes before automatically shutting itself off.

Recharge the analyzer’s internal battery pack by first plugging the supplied
AC adapter in a source of 100–240 VAC, 50/60 Hz power. A green LED on the
adapter should glow, indicating that it is operational. Then insert the
adapter’s output plug into the analyzer’s POWER connector (Figure 1-1).

A fully discharged battery pack should take approximately 11 hours to
recharge. Note that a protection circuit within the analyzer prevents the
battery pack from being over charged.

If the battery pack becomes depleted while the analyzer is being used, or if a
continuous run time of over 8 hours is required, then the AC adapter can be
used to both run the analyzer and charge the battery pack at the same time.

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61

Maintenance ECA 450

Outlet
End

Inlet
End

Riser Tube

Filter Element

End-Cap

End-Cap

4.2 Water-Trap / Filter Assembly

The Water-Trap / Filter Assembly removes water condensate from the gas
sample, and also prevents soot from contaminating the internal components
of the analyzer.

Figure 4-1. Water Trap / Filter Assembly

Drain the water condensate after every use.

Procedure:

1. Pull off end-cap from inlet end of the Water-Trap / Filter Assembly.

2. Pour out all of the water condensate; then replace end-cap.

Replace the filter element when it becomes excessively dirty.

Parts Required:

• Filter Element (refer to Section 6.1)

Procedure:

1. Pull off end-cap from outlet end of Water-Trap / Filter Assembly.

2. Remove and discard old filter element.

3. Install a new filter element; then replace end-cap.

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ECA 450 Maintenance

FRONT PANEL
LATCH

PAPER CARRIER

PAPER FEED
MECHANISM

PAPER ROLL
CLIPS

PAPER RETAINER

4.3 Printer Paper Replacement

Parts Required:

• Replacement Paper Roll (refer to Section 6.1)

Procedure:

1. Open printer by pressing the printer’s front-panel latch. See Figure 4-2.

2. The paper-roll carrier is mounted on the rear of the printer’s front panel
and will swing out when the printer is opened.

3. Pinch in the two paper-roll clips at end of paper carrier; then remove
paper-retainer disk and empty roller from carrier.

4. Install a new paper roll and the paper-retainer disk onto the paper
carrier.

5. With analyzer turned on, position paper at entry point of printer’s feed
mechanism. The paper will be sensed by the mechanism and be
automatically fed through the printer and into the proper position for
printing.

Tip: To correct for minor paper misalignment, press the printer’s front panel
paper-feed button until the paper self aligns.

Figure 4-2. Installing Printer Paper

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63

Maintenance ECA 450

SENSOR COVER

COVER SCREW
(2 PLACES)

O2 SENSOR
& PCB

NO SENSOR,
PCB & LITHIUM
BATTERY

NO

2

SENSOR

& PCB

CO-Hi SENSOR
& PCB

HC SENSOR
& PCB

SO2 SENSOR
& PCB

CO-Lo SENSOR
& PCB

CO-Lo

CO-Hi

O

2

NO

HC

SO

2NO2

PCB CONNECTOR
JACKS

NOTE: FOR CLARITY, THE WIRES BETWEEN THE
SENSOR PRINTED CIRCUIT BOARDS
AND THEIR ASSOCIATED CONNECTOR
JACKS ARE NOT SHOWN.

Optional

OPTIONAL
(Sensor Blank
w/ O-Ring shown)

4.4 Sensor Replacement

The following sections described in detail how to replace the various sensors
located in the analyzer’s sensor compartment. Refer to Figure 4-3 for the
location and positioning of those sensors.

Note: When a sensor-error message appears at the bottom of the screen (refer
to Section “5.2 Problem Messages Displayed After Warm-Up”), it does not
necessarily mean that the sensor has become depleted or is defective. Before
replacing a sensor, refer to Section “5.4 Troubleshooting Guide” for other
possible causes of the error.

Caution: Static damage. When handling any printed circuit board, be sure to
follow all established industry procedures for the prevention of static buildup
that when discharged may damage electrical components on the board.

Figure 4-3. Sensor Compartment

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ECA 450 Maintenance

4.4.1 O2, CO, NO, NO2, & SO2 Sensor Replacement

All sensors, with the exception of the HC sensor, are replaced in a similar
manner. Do the following to replace either the O

sensor.

or SO

2

Material Required:

• Medium Phillips screwdriver

• Replacement sensor (refer to Section 6.1)

Procedure:

1. Remove two screws from sensor-cover plate, and then remove plate to
gain access to sensor compartment. See Figure 4-3.

2. Unplug the printed circuit board from the sensor being replaced by
carefully pulling the board straight up.

3. Note position of sensor pins; then release sensor from its bayonet-type
holder by turning the sensor counterclockwise. Remove sensor by pulling
it straight up.

Note: Discard an old sensor in accordance with local and federal
hazardous waste disposal laws.

4. Remove replacement sensor from its plastic canister. Note that the CO­LO, CO-HI, SO

, and NO2 sensors have a shorting-spring installed

2

between two of their pins. Remove and discard this spring before
installing the sensor.

5. Insert sensor into its holder and turn clockwise to lock in place. Ensure
that the sensor pins are positioned as was noted in Step 3.

6. Plug the circuit board, which was removed in Step 2, into the top of the
sensor.

Important! When replacing the O

sensor, be sure that the “+” sensor pin

2

plugs into the circuit board socket that is also marked “+”. Polarity
markings are located on the bottom of the printed circuit board and the
sensor.

7. Install sensor-cover plate that was removed in Step 1.

8. Allow the sensor that was just installed time to stabilize in the circuit
before continuing with this procedure. Stabilization time for all sensors
(except for the NO sensor) is about 1 hour. An NO sensor requires
approximately 4 hours to stabilize.

9. Place analyzer in an area of fresh air and turn it ON. After its warm-up
cycle completes, observe that no sensor error messages should have
appeared.

10. Calibrate the new sensor per Section 3 (except the O
not require calibration).

, CO-LO, CO-HI, NO, NO2,

2

sensor which does

2

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Maintenance ECA 450

4.4.2 Nitric Oxide Sensor Battery Replacement

A single lithium battery, located on top of the Nitric Oxide printed circuit
board, applies a bias voltage to the NO sensor to prevent the sensor from
destabilizing when the analyzer is turned off. This battery has a life
expectancy of at least 2 years.

Replace the Nitric Oxide bias battery toward the end of its life expectancy, or
when its voltage drops below 2 volts.

Tip: Replace the bias battery whenever the NO sensor is replaced.

Material Required:

• Medium Phillips screwdriver

• Bias battery (refer to Section 6.1)

Procedure:

1. Remove two screws from sensor-cover plate, and then remove plate to
gain access to sensor compartment. See Figure 4-3.

2. Remove old battery from its holder on the Nitric Oxide printed circuit
board.

3. Insert new battery (positive side facing upwards) into holder.

4. Install sensor-cover plate that was removed in Step 1.

5. Before powering up and using the analyzer, allow the Nitric Oxide sensor
to stabilize as described below. Note that recalibration of the Nitric Oxide
sensor is not required after replacing its bias battery.

Depending on how long the Nitric Oxide sensor was without bias voltage,
the time required for the sensor to completely stabilize varies from less
than a minute to several days. Typical stabilization times are shown
below. Generally, however, the sensor is sufficiently stable after 4 hours
for measurement purposes.

Bias removed for . . . Stabilization time

Less than 15 minutes Less than 1 minute
Less than 1 hour Less than 5 minutes
Less than 2 days Less than 4 hours
Greater than 2 days Up to 2 days

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ECA 450 Maintenance

4.4.3 HC Sensor Replacement

Unlike the other sensors that are held in place by their associated bayonet
holders, the HC sensor is plugged into its printed circuit board which, in
turn, is secured inside the sensor compartment with four screws. Remove this
board and replace the sensor as follows:

Material Required:

• Medium Phillips screwdriver

• Small flat blade screwdriver

• Replacement HC sensor (refer to Section 6.1)

Procedure:

1. Gain access to sensor compartment by first removing two screws from the
sensor-cover plate, and then removing plate (see Figure 4-3).

2. Unplug the HC sensor’s printed circuit board from its connector jack.

3. Remove the sensor’s printed circuit board by first removing the board’s
four corner screws, and then lifting the board with the HC sensor
attached out from the sensor compartment.

4. Unplug old sensor and discard.

5. Remove replacement sensor from its plastic canister; then plug sensor
into its printed circuit board.

6. Install and secure the HC sensor’s circuit board inside the sensor
compartment using the screws removed in Step 3.

7. Install sensor-cover plate that was removed in Step 1.

8. Place analyzer in an area of fresh air and turn it ON. After the warm-up
cycle completes, observe that no sensor error messages should have
appeared.

9. Calibrate the new sensor per Section 3.

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Maintenance ECA 450

PARTICULATE FILTER
(Install with arrow pointing
toward inlet of pump)

4.5 Replacing Internal Particulate Filter

An internal particulate filter is located at the inlet of the pump to protect the
pump in the event dirt is drawn into the analyzer’s GAS inlet. Under normal
operating conditions, the probe’s water trap / filter assembly should catch all
dirt particles large enough to damage the pump. But if the probe’s filter fails
or is disconnected, the internal particulate filter will provide backup
protection.

Do the following to replace the internal particulate filter:

Material Required:

• Medium Phillips screwdriver

• Replacement Internal Particulate Filter (refer to Section 6.1)

Procedure:

1. Turn off analyzer and remove screws from control panel.

2. Lift up front of control panel to gain access to the particulate filter
located on the right-hand side of the analyzer. See Figure 4-4.

3. Remove tubing from old filter; then discard filter.

4. Install tubing onto new filter, being sure to position the filter so that its
flow-arrow points toward the pump. Then reinstall control panel.

Figure 4-4. Replacing the Internal Particulate Filter

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ECA 450 Maintenance

WATER TRAP/FILTER ASSEMBLY

GAS HOSE

GAS HOSE

PRESSURE
HOSE

4.6 Cleaning the Probe and Sampling Hoses

If the combustion analyzer is used on either coal or oil fired burners,
particulates can accumulate within the probe and sampling hoses. These
particulates may, in time, build up and restrict the flow of gas into the
analyzer. Note that the probe’s water trap’s filter element should prevent
soot from reaching the analyzer’s internal components. While using the
combustion analyzer, the type of fuels that cause the most dirt and how often
the system needs to be cleaned will become evident.

Equipment Required:

• Aerosol can of automotive carburetor cleaner

• Alcohol

• Mild liquid detergent

• Method of forcing water through sampling hoses (see text)

• Clean rags

• Source of compressed air (optional)

Procedure:

1. If not already done, disconnect the probe’s gas and pressure fittings and
its thermocouple connector from the analyzer.

2. Remove gas and pressure hoses from barbed fittings on probe handle and
gas hose from the water trap / filter assembly (Figure 4-5).

CAUTION: Carburetor cleaner attacks plastic and rubber components.
Take precautions not to spray carburetor cleaner onto the probe handle,
sampling hoses, or analyzer.

Figure 4-5. Cleaning the Probe and Sampling Hoses

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Maintenance ECA 450

RESET BUTTON

3. Clean probe assembly by generously spraying carburetor cleaner through
each of the barbed fittings of the probe handle, while allowing the cleaner
to flow out of the probe tip.

4. After spraying with carburetor cleaner, remove all the residual cleaner by
repeatedly flushing the probe assembly with alcohol.

5. Clean sampling hoses by first squirting a few drops of detergent into one
end of each sampling hose. Then force water through each hose until all
detergent is removed (a faucet adapter connected to a small piece of
rubber hose can be used to supply a rapid flow of water through the
sampling hose).

6. Wipe off surfaces of probe and sampling hoses with a clean rag.

7. Allow parts to dry completely. If available, blow compressed air through
probe and hoses to expedite the drying process.

8. Reassemble parts of probe assembly.

4.7 Resetting the Microprocessor

If the analyzer “locks-up” and cannot be turned off, or begins to operate in an
erratic manner, remove the analyzer’s top panel and press the Reset button,
located on the main printed circuit board. See Figure 4-6.

Note: Pressing the Reset button WILL NOT erase memory nor change the
analyzer’s calibration settings.

Figure 4-6. Reset Button

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Parts & Service ECA 450

5 Troubleshooting

5.1 Analyzer Repair

It is recommended that field repair of the ECA 450 be limited to:

• Simple checks of printed circuit board connectors

• Replacing the Probe Assembly

• Replacing the filter element in the Water Trap / Filter Assembly

• Replacing Sensors

All other repairs should be performed by an authorized Bacharach Service
Center. Any repairs performed by an unauthorized service organization will
void the analyzer’s warranty and release Bacharach, Inc. of any implied or
written product liability.

Before returning your analyzer for repair, you may be able to determine and
resolve a problem using the Troubleshooting Guide in Section 5.4.

5.2 Problem Messages Displayed After Warm-Up

If there were problems detected during warm-up, messages that describe the
nature of the problems are sequentially displayed at the bottom of the screen
immediately following the analyzer’s 60 second warm-up period.

Note that the analyzer will not automatically switch to the Combustion Test
HOLD screen if problems were detected. The analyzer, however, can still be
used to perform any test that does not depend on the sensor that is in error.
Press the RUN key to manually enter the Combustion Test HOLD screen to
continue using the analyzer.

The following is a list of the problem messages that may appear after warm­up completes:

O2 Sensor Error – O
exposed to flue gas during warm-up.

TS Sensor Error – The probe’s flue gas thermocouple not connected to
analyzer, or the temperature being measured by this thermocouple is outside
the range of –4 to 212 °F (–20 to 100 °C).

TA Sensor Error – Primary air temperature as being measured by a
thermocouple connected to the T-AIR connector is outside the range of
–4 to 212 °F (–20 to 100 °C).

NO2 Sensor Error – NO

HC Sensor Error – HC sensor is defective or unplugged.

NOXIDE Sensor Error – NO sensor was exposed to flue gas during warm-up.

sensor is depleted, unplugged, or the sensor was

2

sensor was exposed to flue gas during warm-up.

2

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73

* * * *

CO-HI Sensor Error – CO-HI sensor was exposed to flue gas during warm-up.

CO-LO Sensor Error – CO sensor was exposed to flue gas during warm-up.

Pressure Sens. Error – Pressure sensor is measuring a pressure that is
outside the of range of ±3 inches of water column during warm-up.

SO2 Sensor Error – SO

Low Battery – Battery voltage is low. Only several minutes of operating time
remain.

sensor was exposed to flue gas during warm-up.

2

5.3 Error Symbols

The following error symbols are shown in the Combustion Test Screen and on
a printout to indicate: 1) combustion test data that cannot be calculated,

2) sensors that are in over-range, or 3) sensors that were detected as being in

error during warm-up.

“– – – –” appears in the number fields of combustion test data that cannot be
calculated because the current measurements will not provide a meaningful
calculation. For example, if the Oxygen level is greater than 16%, or the stack
temperature is greater than 2000 °F (1093 °C), or the ambient air
temperature is greater than 999.9 °F (537.8 °C), then the value for EFF
(combustion efficiency) cannot be calculated.

“x x x x” indicates an over-range condition, and appears in the number fields
of sensors that are being exposed to gas levels that are beyond the analyzer’s
detection range. This symbol also appears in the number field of the HC
sensor when there is not enough Oxygen present to measure the combustible
gas level.

“ ” is displayed in the number fields of sensors that were reported as
being in error during warm-up, and also in the number fields of data that
derive their values from the sensor in error. For example, if the NO or NO
sensor was in error, then the NOx data field will also contain stars.

2

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Parts & Service ECA 450

Symptom

Probable Cause & Remedy

Analyzer completely nonfunctional;

a. Battery pack dead. Recharge

Figure 4-5.

Display screen is blank when

a. Microprocessor needs reset.

the printed circuit boards.

Display goes blank during operation.

The analyzer’s display blanking

refer to Section 2.17.9.

Analyzer won’t respond when a

a. Microprocessor needs reset.

replacement.

5.4 Troubleshooting Guide

The following table lists the causes and remedies for most of the problems
that may arise with the analyzer.

If the information in Table 5-1 does not solve the problem, or for help with
any problem that is not listed, then please contact one of the Bacharach
Service Centers listed in Section 6.3.

TABLE 5-1. TROUBLESHOOTING GUIDE

won’t turn on when the I/O key is
pressed.

analyzer is turned on, but pump runs
during warm-up cycle.

battery pack per Section 4.1.

b. Loose battery connector. Remove
analyzer’s top panel and ensure that
the battery connector is securely
attached to the printed circuit
board.

c. Microprocessor needs reset.
Remove analyzer’s top panel and
press the Reset button shown in

Remove analyzer’s top panel and
press the Reset button shown in
Figure 4-6.

b. Loose display connector(s).
Remove analyzer’s top panel and
ensure that all display-panel
connectors are properly attached to

function has been activated. To
change the display timeout interval,

control panel key is pressed.

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Remove analyzer’s top panel and
press the Reset button shown in
Figure 4-6.

b. Membrane switch defective.
Return to Bacharach for

ECA 450 Parts & Service

75

Symptom

Probable Cause & Remedy

“Low Battery” message appears at

Battery close to being discharged.

Recharge battery per Section 4.1.

“O2 Sensor Error” message

a. Analyzer was turned on with

sensor per Section 4.4.1.

“TS Sensor Error” message

a. The probe’s stack thermocouple is

probe assembly.

“TA Sensor Error” message

a. Analyzer was turned on with its

b. Thermocouple defective. Replace.

“NO2 Sensor Error” message

a. Analyzer was turned on with

replace sensor.

“HC Sensor Error” message

Combustibles sensor not plugged in

sensor per Section 4.4.3.

bottom of display, accompanied by a
beeping alert tone.

appears at bottom of display.

appears at bottom of display.

Analyzer will run for only several
minutes after this message first
appears before turning itself off.

probe sampling flue gas. Remove
probe from stack and restart.

b. O2 sensor depleted. Replace

not connected to the analyzer’s
T-STACK connector. Connect
thermocouple per Section 1.5.1.

b. Analyzer was turned on with
probe in stack. Remove probe from
stack; allow it to cool to room
temperature; then restart.

c. Temperature being measured
during start up is outside the range
of –4 to 212 °F (–20 to 100 °C).

d. Thermocouple defective. Replace

appears at bottom of display.

appears at bottom of display.

appears at bottom of display.

primary air thermocouple
measuring a temperature that was
outside the range of −4 to 212 °F
(−20 to 100 °C). Ensure
thermocouple is sampling ambient
room temperature and restart.

probe sampling flue gas. Remove
probe from stack and restart.

b. NO2 sensor not zeroed at start up.
Turn analyzer off and then on to re­zero all sensors. If error persists,

or is defective. Install or replace

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Parts & Service ECA 450

Symptom

Probable Cause & Remedy

“NOXIDE Sensor Error” message

a. Analyzer was turned on with

replace sensor.

“CO-LO Sensor Error” message

a. Analyzer was turned on with

replace sensor.

“CO-HI Sensor Error” message

a. Analyzer was turned on with

replace sensor.

“SO2 Sensor Error” message

a. Analyzer was turned on with

replace sensor.

“Pressure Sens. Error” message

a. Analyzer was turned on with

“Bad Calibration Entry” message

A calibration value was entered that

calibration procedure.

appears at bottom of display.

appears at bottom of display.

appears at bottom of display.

probe sampling flue gas. Remove
probe from stack and restart.

b. NO sensor not zeroed at start up.
Turn analyzer off and then on to re­zero all sensors. If error persists,

probe sampling flue gas. Remove
probe from stack and restart.

b. CO-LO sensor not zeroed at start
up. Turn analyzer off and then on to
re-zero all sensors. If error persists,

probe sampling flue gas. Remove
probe from stack and restart.

b. CO-HI sensor not zeroed at start
up. Turn analyzer off and then on to
re-zero all sensors. If error persists,

appears at bottom of display.

appears at bottom of display.

appears during calibration.

probe sampling flue gas. Remove
probe from stack and restart..

b. SO2 sensor not zeroed at start up.
Turn analyzer off and then on to re­zero all sensors. If error persists,

probe measuring a pressure is that
was outside the range of ±3 inches
of water (±7.47 mb/hPa, ± 747 Pa).
Ensure probe is sampling
atmospheric pressure and restart.

b. Sensor defective. Return to
Bacharach for replacement.

is outside the allowable range for
calibration. Apply a calibration gas
concentration or pressure value that
is within the range of the sensor
being calibrated as listed in the

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77

Symptom

Probable Cause & Remedy

“Sensor Output Low” message

Sensor is nearing the end of its

soon.

“Sensor Not Calibrated” message

Sensor’s output is too low to be

Section 4.4.

“– – – –” appears in one or more of

The analyzer is not able to calculate

detect valid data.

“x x x x” appears in a sensor’s data

Sensor in over range. The

measure the combustible gas level.

“* * * *” appears in a sensor’s data

The field’s associated sensor was

analyzer was turned on.

Gas pump motor sounds sluggish.

a. Gas flow restricted somewhere

Gas pump motor does not start.

Loose pump connector. Remove

Battery power does not last at least
8 hours.

Battery defective. Replace.

appears during calibration.

appears during calibration.

the data fields in the Combustion
Test RUN screen.

field.

field.

useful life. Calibration is still good,
but the sensor should be replaced

calibrated. Replace sensor per

a numerical value based on current
measured data. Numerical data will
appear when the analyzer begins to

associated sensor is detecting a
value that is outside the analyzer’s
detection range. This symbol also
appears in the number field of the
HC sensor when there is not enough
Oxygen present to accurately

reported as being in error when the

between the probe tip and the
T-STACK connector. Ensure that
the probe tip is not plugged with
dirt, and that the Water Trap /
Filter Assembly is clean and not
saturated with water. Also, verify
that the probe’s gas hose is not
pinched.

b. Internal particulate filter clogged.
Replace filter per Section 4.5.

analyzer’s top panel and ensure that
the pump connector is securely
attached to the printed circuit
board.

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Parts & Service ECA 450

Symptom

Probable Cause & Remedy

Erratic combustion test screen data.

a. Faulty sensor(s):

internal to the analyzer.

Sensor does not calibrate properly.

a. Wrong calibration gas or

4.4.2 and recalibrate.

- Check that all sensors are
properly installed and their
wiring harnesses are correctly
connected to the analyzer.
Refer to Section 4.4.

- Check sensor calibration per
Section 3.

- Replace any sensor that does
not calibrate, and then
recalibrate.

b. Leak in gas path. Check tightness
of all hose connections on probe, and
tightness of all hose connections

insufficient flow being applied to
sensor. Ensure that the calibration
setup is correct.

b. Depleted sensor. Replace sensor
and recalibrate.

c. If the NO sensor doesn’t calibrate,
its bias battery may be dead.
Replace bias battery per Section

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6 Parts & Service

6.1 Replacement Parts

Complete ECA 450 Basic Configuration (O
Ambient Temp, and Pressure measurement), with sampling

probe (12 in. tube) and hose assembly .......................................... 0024-7221

AC Adapter:

Charger Unit ............................................................................. 0024-0985

Power Cord ................................................................................. 4998-8986

Battery Pack ................................................................................... 0024-0977

Battery, NO Sensor Bias ................................................................ 0204-0020

Filter, Particulate (attached to inlet of gas pump) ...................... 0007-1563

Instruction Manual ........................................................................ 0024-9400

O-Ring Kit (2 sets) .......................................................................... 0024-1471

O-Ring, Sensor Blank ..................................................................... 0105-5104

Probe & Hose Assembly, 12" probe:

Complete Assembly ................................................................... 0024-3023

Hose Connector, Gas ................................................................. 0024-0877

Hose Connector, Pressure ......................................................... 0024-0878

Filter / Water Trap Assembly:

Complete Assembly .............................................................. 0024-1172

Filter Element (package of 3) .............................................. 0007-1644

Printer Paper (box of 5 rolls).......................................................... 0024-0980

Pump, Gas ....................................................................................... 0024-3009

Screw, Phillips, PH, #6-32 x 1/2", Sensor Cover .......................... 4723-5860

Screw, Phillips, PH, #6-32 x 9/16", Top Panel .............................. 0101-7672

Sensor Blank ................................................................................... 0024-0864

Sensors:

CO-LO ........................................................................................ 0024-0789

CO-HI ........................................................................................ 0024-0997

HC ............................................................................................... 0024-1055

NO .............................................................................................. 0024-0881

NO
O
SO

............................................................................................ 0024-1027

2

................................................................................................ 0024-0788

2

............................................................................................. 0024-0998

2

, CO, Stack Temp.,

2

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6.2 Accessories

Calibration Kit (gas not supplied) ................................................. 0024-7059

Flue Gas Sample Conditioning Unit:
Compact System. Includes Peltier chiller/probe assembly,

built-in filter, condensate pump, and 15 ft hose assembly. .... 0024-7224

Gas Cylinders:

CO, 500 ppm in air ................................................................... 0024-0492

CO/H

CO, 4000 ppm in air .................................................................. 0024-1155

NO, 250 ppm in Nitrogen ......................................................... 0024-1156

NO
SO
Methane, 2.5% CH

Hose Extension, 20 feet (extends reach of probe) ......................... 0024-1124

Probe and Hose Assemblies:

24 in. .......................................................................................... 0024-3024

36 in. .......................................................................................... 0024-3025

Sensor Option Kits*:

CO (high, 4,000 to 80,000 ppm CO) .......................................... 0024-3026

NO ............................................................................................... 0024-3027

Combustibles .............................................................................. 0024-3028

NO
SO

Serial Communications Cable, DB-9M to DB-9F ......................... 0104-4027

Thermocouples, for primary air measurement:

10 foot ......................................................................................... 0104-1797

True Spot Smoke Test Set ............................................................. 0021-7006

* Sensor Option Kits must be installed by an authorized

Bacharach Service Center.

, 1000 ppm CO & 1000 ppm H2 in Nitrogen .................. 0024-0794

2

, 100 ppm in Nitrogen ........................................................ 0024-1157

2

, 100 ppm in Nitrogen ......................................................... 0024-1158

2

.................................................................. 0051-1121

4

............................................................................................. 0024-3029

2

(requires NO2 option) ......................................................... 0024-3030

2

80 Instruction 0024-9400

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