Monoxor ® III
Carbon Monoxide Analyzer
Instruction 19-9326
Operation & Maintenance
Rev. 3 – July 2009
Product Leadership • Training • Service • Reliability
WARRANTY
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material
and manufature and will onform substantially to Baharah In.’s aliable seiations. Baharah’s
liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at Bacharach’s option,
of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.’s
reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given
by Buyer to Bacharach Inc. within two (2) years after the date of delivery of this Product by Bacharach, Inc.
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 limita-
tion will be binding uon Baharah, In. unless in writing, signed by a duly authorized ofer of Baharah.
Register Your Warranty by Visiting
www.mybacharach.com
Declaration of Conformity
Manufacturer’s name: Bacharach, Inc.
Manufacturer’ address: 621 Hunt Valley Circle
New Kensington, PA 15068
Product name: Monoxor III
onforms to the following seiations:
European Directive 89/336/EEC
EN50082-1: 1997 (Electrostatic Discharge)
EN50082-1: 1997 (Immunity)
EN55022; Group 1, Class B (Emission)
Notice:
Produt imrovements and enhanements are ontinuous, therefore the seiations and information ontained 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 © 2002–2009, Bacharach, Inc., all rights reserved.
BACHARACH and Monoxor are registered trademarks of Bacharach, Inc. All other trademarks,
trade names, service marks and logos referenced herein belong to their respective companies.
A
Instruction 19-9326
Monoxor III
Contents
1.0 INTRODUCTION .................................................................................. 1
2.0 TECHNICAL CHARACTERISTICS...................................................3
3.0 PREPARING THE ANALYZER FOR OPERATION .......................5
3.1 Battery Installation .........................................................................5
3.2 Probe Installation ............................................................................6
3.3 Front Panel Pushbuttons .................................................................7
3.4 Setup Mode .......................................................................................8
3.4.1 Entering Setup ......................................................................8
3.4.2 Temperature Units Setup .....................................................8
3.4.3 CO Channel Zero Setup ........................................................9
3.4.4 Time Setup ...........................................................................10
3.4.5 Date Setup ........................................................................... 10
3.4.6 Year Setup ...........................................................................11
3.4.7 Selecting Printer Protocol ...................................................11
3.4.8 Exiting the Setup Screen .................................................... 11
4.0 OPERATION ........................................................................................13
4.1 Taking a Gas Sample ..................................................................... 13
4.2 Ending a Test ................................................................................. 14
4.3 Turning OFF the Analyzer ............................................................ 14
4.4 CO Purge During Turn OFF .........................................................14
4.5 CO Sensor Error Screen ................................................................15
4.6 Using the Backlight ....................................................................... 15
4.7 Using the Probe ..............................................................................15
4.8 Operating Tips ...............................................................................16
4.9 Resetting the Microprocessor ........................................................ 16
4.10 Printing Test Results ................................................................... 17
5.0 CALIBRATION & MAINTENANCE ................................................19
5.1 Entering the Calibration Mode and Testing the Display Segments ...19
5.2 Ambient Temperature Calibration ...............................................20
5.3 CO Sensor Zero & Calibration .......................................................20
5.4 Water Trap / Filter Maintenance ..................................................22
5.5 CO Sensor Replacement ................................................................23
5.6 Pump Assembly Replacement ....................................................... 24
6.0 PARTS & SERVICE ............................................................................27
6.1 Replacement Parts ......................................................................... 27
6.2 Accessories ......................................................................................27
6.3 Service Centers ..............................................................................28
7.0 HAZARDS OF CARBON MONOXIDE .............................................29
Instruction 19-9326
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Monoxor III
Notes
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Instruction 19-9326
Monoxor III
1.0 INTRODUCTION
The Monoxor III is a portable analyzer designed to detect and display
concentrations of Carbon Monoxide (CO) gas between 0 and 2000 ppm. The
analyzer is capable of testing for CO in both ambient room air, and in the
ue-gas stream of fossil-fuel red furnaces and boilers.
Ordering Information:
Part No. Description
19-8104 Monoxor III, includes 4 ‘AA’ batteries, probe & hose assembly
with integral water-trap / lter, and a hard carrying case
19-8105 Monoxor III, includes 4 ‘AA’ batteries, probe & hose assembly
with integral water-trap / lter, hard carrying case, plus
an IrDA printer with an assortment of printer accessories
including an AC adapter, roll of paper, in-car charger, belt
clip, and magnet
The analyzer detects and displays the presence of CO by rst drawing in a
gas sample from the area being tested by the analyzer’s built-in motorized
pump. The gas sample is next directed into a sensor chamber where the
sample is analyzed for the presence of CO. If CO is detected, the CO ppm
level is displayed on the analyzer’s LCD.
A permanent record of the detected CO level, along with the current time
and date, can be made by using the optional wireless IrDA printer.
A backlight enables the operator to read the display in dimly-lit areas. A
power-saver feature causes the backlight to automatically turn OFF after
10 minutes, and causes the analyzer to shut OFF after 20 minutes of inactivity. The power saver feature, however, is disabled while the detected CO
level is above 50 ppm.
When the analyzer is used to measure the CO content in ue-gas, a rigid
stainless steel probe with handle is provided that allows gas samples to
be taken from within the ue stack. An integral water-trap / lter pre-
vents water and soot from being drawn into the analyzer. The probe can
also be used in ambient testing to draw in gas samples from cramped and
conned areas.
If the analyzer is turned OFF while a high level of CO is still present
within the unit, the analyzer’s pump remains running and the unit will
not turn OFF until the detected CO level drops below 50 ppm.
Instruction 19-9326
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Monoxor III
Notes
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Instruction 19-9326
Monoxor III
2.0 TECHNICAL CHARACTERISTICS
CO Display Range ...................... 0–2000 ppm
Accuracy ..................................... ±5% of reading or ±10 ppm,
whichever is greater*
Resolution ...................................1 ppm
Response Time ........................... 90% of nal value within 40 sec.
Battery Requirement ................. Four disposable ‘A A’ Alkaline batteries
Operating Time .......................... Up to 18 hours continuous (pump running
and backlight off)
Warm Up Time ........................... 10 or 60 seconds (depending on CO
channel zero setup, refer to Page 9)
Display ........................................ 4 digit by 2 line, 7-segment Liquid Crystal
Display
Front Panel Controls .................. Six push button switches
(refer to Section 3.3)
Operating Temperature:
Analyzer ................................. 32–104 °F (0–40 °C)
Probe ....................................... 1000 °F (538 °C) max. at 5" insertion
Humidity ..................................... 15 to 90% RH (non-condensing)
Printer Port ................................ IrDA or HP protocol
Weight ......................................... 16 oz with batteries
Size .............................................. 7.5"H x 3.1"W x 2.1"D (190x79x53 mm)
* Tighter accuracy in the lower ranges, up to ±2 ppm, may be attained if a
lower range calibration gas (e.g. 100 ppm CO) is used.
Instruction 19-9326
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Monoxor III
Notes
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Instruction 19-9326
Monoxor III
Remove battery cover
by pressing here and
sliding cover outward
3.0 PREPARING THE ANALYZER
FOR OPERATION
To prepare a new analyzer for operation, you must install four ‘AA’
Alkaline batteries, install the probe (if needed), and set the correct time
and date as described in the following paragraphs.
For your convenience, and to ensure that the analyzer will provide reliable
CO readings, the CO sensor was installed and the analyzer calibrated on
500 ppm CO at the factory.
3.1 Battery Installation
Install fresh batteries as described below. Check the analyzer for sufcient
charge prior to each use. Replace the batteries if the low-battery symbol
appears in the lower right corner of the LCD. To install batteries:
1. Remove battery cover from back of unit (see Figure 3-1).
2. If old batteries are installed, remove and properly dispose of the
batteries.
3. Observing the polarity markings inside the battery compartment,
install four ‘AA’ Alkaline batteries.
4. Replace battery cover.
Figure 3-1. Battery Installation
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Monoxor III
FLUE-GAS
HOSE
WATER TRAP /
FILTER ASSEMBLY
3.2 Probe Installation
Install the probe if the analyzer is going to be used for ue-gas CO mea-
surements, or if gas measurements need to be taken from a cramped or
conned area.
To install the probe, simply slide its hose over the GAS inlet of the analyzer (see Figure 3-2).
Figure 3-2. Probe Connection
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Instruction 19-9326
Monoxor III
3.3 Front Panel Pushbuttons
Note that a push button may perform several functions, depending on what
screen is being displayed at the time.
I/O • Turns analyzer ON/OFF. There is a 10 or 60 second warm-
up and a 5 second turn-off-delay period.
• Places the analyzer into either its Setup or Calibration Mode
when used in conjunction with the ENTER or HOLD button.
• Bypasses the CO purge function during turn-off.
• Causes the displayed value to increase or change while in
the Calibration or Setup Mode.
• Causes the displayed value to decrease or change while in
the Calibration or Setup Mode.
ENTER • Starts a test – pump ON.
• Sets up the analyzer to be placed into its Calibration Mode
when held down with the analyzer OFF. (Used in conjunction with the I/O button.)
• Stores the displayed value and automatically steps to the
next screen when pressed during calibration or setup.
• Displays the CO screen when held down for 2 seconds while
in the Calibration Mode.
• Aborts turn-off and keeps the analyzer turned ON when
pressed during either the 5 second turn-off-delay period, or
the CO purge cycle.
HOLD • Freezes the display and stops the pump during a test.
• Starts a printout when pressed twice with the pump running, or when pressed once with the pump OFF.
• Sets up the analyzer to be placed into its Setup Mode when
held down with the analyzer OFF. (Used in conjunction with
the I/O button.)
LIGHT Toggles the backlight ON and OFF.
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Monoxor III
3.4 Setup Mode
The analyzer is preset at the factory for the parameters shown below, but
can be changed as described in their associated sections.
Function Parameter To Change
Temperature Unit °F Section 3.4.2
CO Channel Auto Zero Section 3.4.3
Time Not Set Section 3.4.4
Date Not Set Section 3.4.5
Year Not Set Section 3.4.6
Printer IrDA Section 3.4.7
3.4.1 Entering Setup
1. With the analyzer turned OFF, press and hold down the HOLD
button.
2. Press and release the I/O button.
3. Release the HOLD button.
4. The analyzer is now in its Setup Mode. Refer to Sections 3.4.2 thru
3.4.7 for information on how to set the analyzer’s various parameters.
3.4.2 Temperature Units Setup
The Temperature Units Setup Screen is labeled “Unit”.
Note: The analyzer uses an internal temperature sensor
to maintain CO sensor accuracy under varying ambient
temperature conditions. This sensor’s temperature reading is
displayed only during calibration as described in Sec-
tion 5.2.
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Instruction 19-9326
Monoxor III
1. Enter the Setup Mode per Section 3.4.1. If necessary, repeatedly
press ENTER until the Temperature Units Setup Screen is displayed.
2. Press the or button until the desired temperature unit
(°F or °C) is displayed.
3. Press ENTER to move to the next Setup Screen, or I/O to exit setup.
3.4.3 CO Channel Zero Setup
The CO Channel Setup Screen is labeled “CO”.
1. Enter the Setup Mode per Section 3.4.1. If necessary, repeatedly
press ENTER until the CO Channel Setup Screen is displayed.
2. Press the or button until the desired parameter is displayed.
- no Sensor disabled. Note that when the CO sensor is dis-
abled the CO measurement screen will display “Err” instead of the current CO level.
- 2Ero Manual Zero – Warm-up time is 10 seconds, and the
analyzer does not zero the CO sensor to ambient conditions
during this period. For example, if the atmosphere contains 25 ppm CO at start up, the analyzer will immediately
display 25 ppm. The zero point, however, can be manually
adjusted by performing Steps 1–4 of Section 5.3.
- A2 Auto Zero – Warm-up time is 60 seconds, and the CO sen-
sor is zeroed to the ambient CO level during this period. For
example, if the atmosphere contains 25 ppm CO at start up,
the analyzer will display 0 ppm. It’s very important that
when in this mode the analyzer be turned ON in fresh
air; otherwise, incorrect CO readings will occur.
3. Press ENTER to move to the next Setup Screen, or I/O to exit setup.
Instruction 19-9326
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Monoxor III
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3.4.4 Time Setup
There are two Time Setup Screens, one for hours and the other for minutes. Two bars appear above the segments being changed. The clock is in
a 24 hour format, but will appear as AM/PM on the printout.
1. Enter the Setup Mode per Section 3.4.1. If necessary, repeatedly
press ENTER until the rst Time Setup Screen is displayed—the
one with two bars over the hour digits.
2. Press the or button until the correct hour value is displayed.
3. Press ENTER to move the selection bars over the minute digits.
4. Press the or button until the correct minute value is displayed.
5. Press ENTER to move to the next Setup Screen, or I/O to exit setup.
3.4.5 Date Setup
There are two Date Setup Screens, each labeled “DAtE”. The rst screen
sets the month while the second screen sets the day.
1. Enter the Setup Mode per Section 3.4.1. If necessary, repeatedly
press ENTER until the rst Date Setup Screen is displayed.
2. Press the or button until the correct month is displayed.
3. Press ENTER to switch to the second Date Setup Screen.
4. Press the or key until the correct day is displayed.
5. Press ENTER to move to the next Setup Screen, or I/O to exit setup.
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Instruction 19-9326
Monoxor III
3.4.6 Year Setup
The Year Setup Screen is labeled “yEAr”.
1. Enter the Setup Mode per Section 3.4.1. If necessary, repeatedly
press ENTER until the Year Setup Screen is displayed.
2. Press the or button until the correct year is displayed.
3. Press ENTER to move to the next Setup Screen, or I/O to exit setup.
3.4.7 Selecting Printer Protocol
The Printer Setup Screen is labeled “Prnt”. The analyzer can be set up to
send data to a wireless printer using either HP or IrDA protocol.
1. Enter the Setup Mode per Section 3.4.1. If necessary, repeatedly
press ENTER until the Printer Setup Screen is displayed.
2. Press the or button to select the desired protocol.
3. Press ENTER to move to the next Setup Screen, or I/O to exit setup.
3.4.8 Exiting the Setup Screen
Press the I/O button at any time to exit the Setup Mode and turn the analyzer OFF. Note that the last displayed parameter is automatically saved
in memory.
Instruction 19-9326
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Monoxor III
Notes
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Instruction 19-9326
Monoxor III
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4.0 OPERATION
To operate the Monoxor III, you simply . . .
• Turn the analyzer ON
• Wait for the unit to warm up
• Take a gas sample
4.1 Taking a Gas Sample
Important! If the CO channel is set up for Auto Zero (refer
to Section 3.4.3), ensure that the analyzer will be sampling
fresh air (containing no CO) when turned ON.
Turn ON the analyzer by pressing the I/O button. Observe that when
power is rst applied, the software revision level is rst displayed followed
by a screen that counts down the warm-up period. The warm-up period is
either 60 seconds (Auto Zero Mode) or 10 seconds (Manual Zero Mode).
Following warm-up, the CO screen appears. This screen shows the current
detected CO level in ppm. If the probe is being used, insert the probe tip
into the area to be sampled.
Note: If a sensor error was detected during warm-up, the CO
Sensor Error Screen will be displayed. Refer to Section 4.5.
Front Panel Button Functions:
– No effect
– No effect
HOLD – Freezes display and stops pump; pressing a second time
activates printing
ENTER – Restarts testing after the HOLD button was pressed
LIGHT – Toggles backlight ON/OFF
I/O – Turns analyzer OFF (with a 5 second delay)
Instruction 19-9326
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Monoxor III
4.2 Ending a Test
WARNING! Burn Hazard. Do not touch the probe after
removing it from a ue. Allow the probe to cool before handling (about 5 minutes).
After taking a gas sample, remove the probe and take the analyzer to an
area containing fresh air. Allow the pump to run until the CO reading
drops to near zero.
4.3 Turning OFF the Analyzer
Turn OFF the analyzer by pressing the I/O button. The analyzer will count
down from 5 before turning OFF. Pressing ENTER, however, will abort the
count down and keep the analyzer ON.
Note: The analyzer will automatically turn itself OFF after
20 minutes of keyboard inactivity, unless the detected CO
level is above 50 ppm.
4.4 CO Purge During Turn OFF
If the detected CO level is above 50 ppm when the analyzer is turned OFF,
the unit will remain ON with its pump running and display “PUrG CO”.
The countdown from 5 will not begin until the CO level drops below
50 ppm.
Pressing ENTER during CO purge will return the analyzer to the CO
measurement screen. Although not recommended for routine use, the CO
purging process can be bypassed by pressing the I/O button a second time,
which will immediately turn OFF the analyzer.
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Instruction 19-9326
Monoxor III
4.5 CO Sensor Error Screen
When the CO channel is set up for Auto Zero (refer to Section 3.4.3), a
CO sensor error will occur if the detected Carbon Monoxide level is above
50 ppm during the warm-up period.
Note, however, that if the CO channel is set up for manual calibration,
the analyzer does not auto-zero the CO sensor during warm-up, and thus
does not generate a CO sensor error when the analyzer is turned ON in an
atmosphere containing a high background level of CO.
Make the following checks before replacing a suspected spent or defective
sensor:
1. Turn OFF the analyzer and turn it back ON in an area of fresh air.
2. If Step 1 doesn’t eliminate the error condition, replace the sensor
per Section 5.5.
4.6 Using the Backlight
The LCD can be read in dimly-lit areas by pressing the LIGHT button.
The backlight automatically turns OFF after 10 minutes of keyboard
inactivity, but can be turned OFF at any time by again pressing the
LIGHT button.
4.7 Using the Probe
A rigid stainless steel probe with handle, connected to a exible hose with
integral water-trap / lter can be used to draw a gas sample into the analyzer from the room, grilles, diffusers, and furnace ues.
The hose and probe assembly can be detached from the analyzer when the
operator desires to sample without the probe.
Instruction 19-9326
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Monoxor III
4.8 Operating Tips
• When an analyzer is brought in from a cold vehicle, let it warm up
slowly to minimize condensation. Temperatures below freezing will not
damage the analyzer; however, bringing a cold analyzer into a warm,
humid environment may cause condensate to form inside the case.
• If the CO channel is set up for Auto Zero (refer to Section 3.4.3), ensure
that the analyzer is sampling fresh air when turned ON. Pulling a
ue-gas sample through the analyzer during its warm-up period will
not damage the analyzer, but it will result in incorrect CO readings.
Also note that a CO sensor error will occur if the detected CO level is
above 50 ppm during warm-up.
• Flue-gas condensate is acidic and very corrosive. It is important not to
allow the analyzer’s internal components to become soaked in condensate for long periods of time.
• Before each use, inspect the lter element of the water-trap / lter assembly. Replace the lter if it looks dirty.
• During a test, keep the analyzer above the water-trap, and keep the trap
in a vertical position. This will maximize the effectiveness of the trap
and keep liquid condensate from being drawn directly into the analyzer.
• When liquid condensate is seen inside the water trap, empty the trap
before it becomes full. Refer to Section 5.4.
• It is recommended that the analyzer be purged after taking a ue-gas
measurement before turning it OFF. Once the probe is removed from the
stack, disconnect the hose assembly from the bottom of the analyzer and
let the pump run for 10 minutes or so to completely remove any remain-
ing ue gases, and dry any condensate from inside the sensor chamber.
• When storing the analyzer, it’s a good idea to empty the water trap and
leave it open to further dry it out.
• Calibrate the analyzer about every 6 months to ensure its accuracy.
4.9 Resetting the Microprocessor
If the analyzer ‘locks up’ and cannot be turned OFF, reset the microprocessor by removing one of the batteries for 5 seconds.
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Instruction 19-9326
Monoxor III
60°
max.
45 cm
(18 in.)
max.
ENTER
HOLD
I/O
LIGHT
4.10 Printing Test Results
Turn ON the printer. Refer to the printer’s
instruction manual for detailed operation and
maintenance information.
If not already done, set the printer parameters as follows:
• Data – 8 bits
• Baud – 9600
• Parity – None
• Handshaking – X-on/X-off
Align the printer with the top of the analyzer
as shown in Figure 4-1.
Begin printing by doing one of the following:
- If the pump is running, press the HOLD
button twice.
- If the display has been previously frozen,
press the HOLD button only once.
Tip: If the printer does not operate correctly,
ensure that the correct printer protocol has
been selected per Section 3.4.7.
Figure 4-1. Printer Alignment & Sample Printout
Instruction 19-9326
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Monoxor III
Notes
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Instruction 19-9326
Monoxor III
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5.0 CALIBRATION & MAINTENANCE
Important: Fresh batteries should be installed, and the unit
allowed to stabilize at room temperature for at least two
hours before proceeding with calibration. To maintain accuracy as listed in the Technical Characteristics Section of
this manual, the standards used must be at least 4 times as
accurate as the stated accuracy of the Monoxor III.
5.1 Entering the Calibration Mode and
Testing the Display Segments
1. With the analyzer turned OFF, place the unit in fresh, ambient air;
then press and hold down the ENTER button.
2. Press the I/O button and release it. Observe that all LCD segments
are turned ON.
3. Release the ENTER button. Observe the unit’s model number and
software version are displayed. The word “CAL” is then displayed
while the unit counts down from either 10 or 60 seconds. Note that
the count-down time is dependent on whether the CO channel is set
up for manual or automatic zero – refer to Page 9.
At the end of the count-down period, the rst calibration screen is
automatically displayed.
Note: During calibration, the and buttons are used to
increase or decrease a displayed calibration value. ENTER is
used to store the new value and move to the next screen. Exit
the Calibration Mode by holding down the ENTER button
for 2 seconds.
Instruction 19-9326
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Monoxor III
5.2 Ambient Temperature Calibration
Material Required: Calibrated Thermometer
Procedure:
1. Enter the Calibrate Mode as described in Section 5.1. Observe that
“AMBIENT” is displayed at the top of the display; if not, repeatedly
press ENTER until it appears.
2. Use the and buttons to adjust the displayed value to match the
reading of a calibrated thermometer.
3. Press ENTER to store the displayed value and move to the next
calibration screen, or hold down ENTER for 2 seconds to store the
displayed value and display the CO screen, or press the I/O button
to exit the Calibration Mode and turn OFF the analyzer without
saving the changes.
5.3 CO Sensor Zero & Calibration
Material Required: • Cylinder of 100 ppm (P/N 51-1994) or
500 ppm (P/N 24-0492) CO calibration gas
• Calibration Kit, P/N 24-7059
If you are primarily performing ue-gas testing, calibrate the Monoxor III
with 500 ppm CO calibration gas. If the analyzer will be primarily used for
ambient testing, then you may wish to consider 100 ppm CO calibration gas.
Procedure:
1. With the analyzer sampling fresh air, enter the Calibration Mode as
described in Section 5.1. Then repeatedly press the ENTER button
until “CO” appears in the upper left side of the display.
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Instruction 19-9326
Monoxor III
1
2 3 4 5
LEAVE TOP
PORT OPEN
Parts Shown:
1. Gas Cylinder
2. Regulator*
3. Tubing*
4. Tee*
5. Flowmeter*
6. Fitting, Gas
* Contained in Calibration Kit
3
6
ENTER
HOLD
I/O
LIGHT
2. Allow the pump to run and sample fresh air for at least 1 minute.
3. Use the and buttons to set the displayed value to 0 ppm.
4. Do one of the following:
a. End this procedure and save the new zero value by holding down
the ENTER button for 2 seconds; after which, the CO screen is
displayed.
b. Continue with Step 5 to span the CO sensor to a known concen-
tration of carbon monoxide.
5. Set up the Calibration Kit with 100 or 500 ppm CO as described in
the instructions supplied with the kit.
6. Connect the tubing of the Calibration Kit to the inlet of the analyzer; then adjust the regulator for approximately 2 SCFH of excess
ow (see Figure 5.1).
7. After the analyzer has stabilized (2 to 3 minutes), use the and
buttons to set the displayed value to match the CO concentration
stamped on the gas cylinder.
8. Press ENTER to store the new calibration values and move to the
next calibration screen, or hold down ENTER for 2 seconds to store
the new calibration values and display the CO screen, or press the
I/O button to exit the Calibration Mode and turn OFF the analyzer
without saving the changes.
9. Disconnect tubing from analyzer and turn off gas ow.
Instruction 19-9326
Figure 5-1. Calibration Kit Hookup
21
Monoxor III
Pull apart using a slight
twisting motion
WATER TRAP
CHAMBER
FILTER
CHAMBER
FILTER ELEMENT
Pry apart filter chamber using
a small flat-blade screwdriver
inserted into notch
When reassembling
the trap, make sure
that surfaces "A" and
"B" are in contact
"A"
"B"
5.4 Water Trap / Filter Maintenance
The Water Trap / Filter Assembly removes water condensate from the gas
sample, and also prevents soot from contaminating the internal components of the analyzer.
Drain the water condensate after every test.
Procedure:
1. Pull apart the Water Trap / Filter assembly (see Figure 5-2).
2. Pour out all water condensate; then reassemble the trap.
Replace the Filter Element when dirty.
Material Required: Filter Element, P/N 07-1644
Procedure:
1. Pull apart the Water Trap / Filter assembly (see Figure 5-2).
22
2. Pry apart the Filter Chamber; then remove and discard old lter.
3. Install new lter and reassemble trap, making sure that surfaces
“A” and “B” are in contact.
Figure 5-2. Water Trap / Filter Assembly
Instruction 19-9326
Monoxor III
5.5 CO Sensor Replacement
Material Required: • CO Sensor, P/N 24-7265
• CO Sensor Gasket, P/N 24-1112
• #1 Phillips Screwdriver
Procedure:
1. Disassemble the analyzer as follows:
a. Remove the battery cover and the batteries, uncovering one of
the cover hold-down screws.
b. Remove and set aside all four cover hold-down screws.
c. With the analyzer on its back, remove the front cover, laying it
face down to the left of the body.
d. Carefully remove the circuit board, slipping off the battery con-
nector on top, and then laying the circuit board face down in the
top cover.
2. Gently pull CO sensor out of its socket (see Figure 5-3).
3. Properly dispose of the old CO sensor (see the instruction sheet that
comes with the new sensor).
4. It is recommended that the CO sensor gasket (see Figure 5-4) be
replaced at the same time as the sensor. Remove the old gasket and
discard. Remove the paper backing from the new gasket and adhere
it to the case in the same position as the old one.
5. Insert the new CO sensor into its socket.
6. Reassemble the analyzer.
Instruction 19-9326
23
Monoxor III
5.6 Pump Assembly Replacement
Material Required: • Pump, P/N 24-3048
• #1 Phillips Screwdriver
Procedure:
1. Disassemble the analyzer as follows:
a. Remove the battery cover and the batteries, uncovering one of
the cover hold-down screws.
b. Remove and set aside all four cover hold-down screws.
c. With the analyzer on its back, remove the front cover, laying it
face down to the left of the body.
d. Carefully remove the circuit board, slipping off the battery con-
nector on top, and then laying the circuit board face down in the
top cover.
2. Slip off the pump motor’s electrical connector from the circuit
board.
3. Unscrew the pump’s hold down clamp and remove it from the pump
(see Figure 5-4). Make note of how the pump wiring is routed.
4. Make note of how the tubing connects to the pump; then carefully
remove tubing from pump.
5. Remove the old pump and discard.
6. Install the new pump and reinstall the tubing, taking care not to
pinch or crimp the tubing. Also be sure that the pump wiring is
routed as was noted in Step 3.
7. Reassemble the analyzer.
24
Instruction 19-9326
CO
SENSOR
Not Used
To
PUMP
(RED
WIRE)
(RED
WIRE)
Monoxor III
Figure 5-3. CO Sensor Located on Backside
Instruction 19-9326
of Printed Circuit Board
25
CO SENSOR
GASKET
PUMP
HOLD
DOWN
CLAMP
Monoxor III
26
Figure 5-4. Back Case Component Locations
Instruction 19-9326
Monoxor III
6.0 PARTS & SERVICE
6.1 Replacement Parts
Description Part No.
Carbon Monoxide Sensor .....................................................................24-7265
Carbon Monoxide Sensor Gasket ......................................................... 24-1112
Pump Assembly ................................................................................... 24-3048
Water Trap / Filter Assembly, Complete .............................................19-3265
Water Trap / Filter Assembly, Filter Element (pack of 3) .................. 07-1644
6.2 Accessories
STANDARD ACCESSORIES:
Battery, ‘AA’ Alkaline (Qty 4) ........................................................... 204-0004
Instruction Manual ..............................................................................19-9326
Probe, Hose, and Water Trap / Filter Assembly ................................. 19-7110
Quick Start Guide ................................................................................19-9327
Hard Carrying Case ........................................................................... 24-0865
OPTIONAL ACCESSORIES:
AC Adapter (Battery Eliminator) ........................................................24-1254
Calibration Kit .....................................................................................24-7059
Gas Cylinder, 100 ppm CO .................................................................. 51-1994
Gas Cylinder, 500 ppm CO ................................................................. 24-0492
Soft Carrying Case ..............................................................................24-1267
Printer, Wireless IrDA w/120 VAC Charger (part of kit 19-8105) .....24-1229
Printer Paper:
1 Roll ............................................................................................. 06-8733
5 Roll Pack ..................................................................................... 24-1310
Protective Rubber Boot w/Magnet ......................................................24-1127
True Spot Smoke Test Set ................................................................... 21-7006
Filter Paper, True Spot (40 strips) .................................................21-0019
Instruction 19-9326
27
Monoxor III
6.3 Service Centers
Replacement parts and service can be obtained by contacting one of the following Bacharach Service Centers:
United States
Bacharach, Inc.
621 Hunt Valley Circle
New Kensington, PA 15068
Phone: 724-334-5051
Fax: 724-334-5723
Email: help@mybacharach.com
Canada
Bacharach of Canada, Inc.
250 Shields Court Unit #3
Markham, Ontario L3R 9W7
Canada
Phone: 905-470-8985
Fax: 905-470-8963
Email: bachcan@idirect.com
México
Bacharach de México
Playa Regatas No. 473 Tercer Piso
Col. Militar Marte
Delegación Iztacalco, 08830
México D.F.
México
Phones: +52-555-634-7740
+52-555-634-7741
Fax: +52-555-634-7738
Email: bacharachservicio@
bacharach.com.mx
Website: www.bacharach-mexico.com
28
Instruction 19-9326
Monoxor III
7.0 HAZARDS OF CARBON MONOXIDE
Carbon Monoxide (CO) poisoning results in headache, nausea, chronic
tiredness, confusion, dizziness, and sometimes coma or death. CO effects
people by cutting off the supply or Oxygen to their muscles and brain. The
harmful effects of CO exposure depend on both the concentration of CO in
the air and the length of exposure.
Concentration of
CO in Air
50 ppm* (0.005%) Maximum allowable concentration for continuous
200 ppm* (0.02%) Slight headache, tiredness, dizziness, nausea after
400 ppm (0.04%) Frontal headaches within 1–2 hours, life
800 ppm (0.08%) Dizziness, nausea and convulsions within
1,600 ppm (0.16%) Headache, dizziness and nausea within
3,200 ppm (0.32%) Headache, dizziness and nausea within
6,400 ppm (0.64%) Headache, dizziness and nausea within
Inhalation Time and Toxic Symptoms Developed
exposure in any 8-hour period.
2–3 hours.
threatening after 3 hours.
45 minutes. Unconsciousness within 2 hours.
Death within 2–3 hours.
20 minutes. Death within 1 hour.
5–10 minutes. Death within 30 minutes.
1–2 minutes. Death within 10–15 minutes.
12,800 ppm (1.28%) Death within 1–3 minutes.
For additional information on CO and its dangers, ask your sales representative about Bacharach’s Institute of Technical Training CO Seminars.
* Maximum CO concentration for exposure at any time as prescribed by
OSHA. Effects can vary signicantly based on age, sex, weight, and overall state of health.
Instruction 19-9326
29
Monoxor III
Notes
30
Instruction 19-9326
Monoxor III
Notes
Instruction 19-9326
31
Printed in U.S.A.
621 Hunt Valley Circle, New Kensington, PA 15068
World Headquarters
Ph: 724-334-5000 • Fax: 724-334-5001 • Toll Free: 800-736-4666
Website: www.mybacharach.com • E-mail: help@mybacharach.com
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