Bacharach MGC200 Operating manual

Instruction 0019-9322
MGC 100/200
MGC 100 / 200
Instruction 0019-9322
Operation & Maintenance
Rev. 2 – May 2010
Product Leadership • Training • Service • Reliability
MGC
2
3

MGC 100/200
Instruction 0019-9322
AInstruction 0019-9322
WARRANTY
Bacharach,Inc.warrantstoBuyerthatatthetimeofdeliverythisProductwillbefreefrom
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. Bacha-
rach’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.
THEFOREGOINGWARRANTIESAREEXCLUSIVEANDAREGIVENANDACCEPTED
INLIEUOF(I)ANYANDALLOTHERWARRANTIES,EXPRESSORIMPLIED,INCLUD-
INGWITHOUTLIMITATIONTHEIMPLIEDWARRANTIESOFMERCHANTABILITYAND
FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY,
RIGHT, CLAIM OR REMEDY IN CONTRACTOR TORT, WHETHER OR NOTARISING
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 rem-
edies 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.
Notice:
Product improvements and enhancements are continuous, therefore the specifications and information con-
tained in this document may change without notice.
Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in con-
nection 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.
BACHARACH®is a registered trademark of Bacharach, Inc.
All other trademarks are the property of their respective owners.
Copyright © 2010, Bacharach, Inc., all rights reserved.
Register Your Warranty by Visiting
www.mybacharach.com

Instruction 0019-9322
MGC 100/200
i
Instruction 0019-9322
MGC 100/200
Contents
1.0 INTRODUCTION................................................................................1
1.1 General .......................................................................................1
1.2 Features...................................................................................... 1
1.3 Applications................................................................................2
1.4 Instruction Manual.................................................................... 2
1.5 Measuring Ranges .....................................................................2
2.0 OPERATION .......................................................................................3
2.1 Important Note ..........................................................................3
2.2 Switching the Instrument ON/OFF ..........................................3
2.3 Connecting Instrument to Medical Gas Outlet ........................4
2.4 Starting and Ending a Test....................................................... 5
2.5 Current Reading Display Mode.................................................5
2.6 Peak Reading Display Mode (MGC 200) ..................................5
2.7 Storing Readings........................................................................ 6
2.7.1 MGC 100 – Snapshot ..................................................... 6
2.7.2 MGC 200 – Snapshot & Data-Logging .........................7
2.8 Battery Low Display ..................................................................7
2.9 Battery Charge Display (MGC 100)..........................................7
2.10 Fault Condition Warning ..........................................................8
2.11 Gas Alarm ..................................................................................8
2.12 Powering Instrument from Charger ......................................... 8
3.0 MAINTENANCE .................................................................................9
3.1 Cleaning .....................................................................................9
3.2 Sunlight ......................................................................................9
3.3 Servicing..................................................................................... 9
3.4 Software Version / ID Number..................................................9
3.5 Factory Settings.........................................................................9
3.6 Battery Charging .....................................................................10
3.7 Zeroing the N2O Sensor (MGC 100) .......................................11
3.8 Zeroing the CO2 & CO Sensors (MGC 200) ...........................12
3.9 Span Calibration (MGC 100)...................................................13
4.0 PARTS & SERVICE .........................................................................15
4.1 Replacement Parts and Accessories........................................ 15
4.2 Bacharach Service Centers .....................................................16

MGC 100/200
Instruction 0019-9322
Notes

Instruction 0019-9322
MGC 100/200
1.0 INTRODUCTION
1.1 General
Bacharach analyzers are easy to use, but it is essential that these Oper-
ating Instructions be read and understood by all operators and mainte-
nance personnel prior to using or servicing the instrument.
The Bacharach MGC series of monitors are versatile handheld instru-
ments that are designed to measure N2O, CO2and CO from piped medi-
cal-gas outlets.
Available in two models:
• MGC 100 – Measures N2O
• MGC 200 – Measures CO2and CO
Both models feature data-logging, run-and-charge capability, and a user-
zero function for all gases.
Power is provided by a long-life NiMH battery, which is capable of pro-
viding up to 10 hours of continuous operation from one charge.
The MGC 100 has built-in memory that allows it to store ‘snapshot’ read-
ings (pressing the f1 button stores the current reading in memory), while
the MGC 200 can automatically store up to 200 sets of gas readings in
memory at predetermined intervals. Readings can later be downloaded
to a personal computer for analysis via its integral IrDA communications
link and the optional BACH-COM software.
1.2 Features
•Up to 10 hours of operation on one charge
•Convenient zero function for all gas sensors
• Internal pump
•Battery capacity display
•Quick charge capability—2 hours
•IrDA link for downloading stored data to a personal computer
•Charge-and-run capability for long-term monitoring
•Flow restrictor that limits inlet pressure to 2 psig
•Manual storage (snapshot) of current gas reading (MGC 100)
•Both snapshot and automatic data-logging of up to 200 sets of
readings (MGC 200)
•Peak reading mode (MGC 200)
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MGC 100/200
Instruction 0019-9322
1.3 Applications
• Piped medical gas checking
1.4 Instruction Manual
Unless otherwise noted, all paragraphs in this instruction manual
describe the operation and maintenance of both the MGC 100 and
MGC 200. For example, the heading 2.9 Battery Charge Display
(MGC 100) indicates that the information under this heading pertains
only to the MGC 100.
1.5 Measuring Ranges
Measurement Range / Resolution
N2O (MGC 100)*....................................................... 40 to 100% / 0.1%
CO2(MGC 200).............................................0 to 10,000 ppm / 10 ppm
CO (MGC 200) .....................................................0 to 500 ppm / 1 ppm
* Although the MGC 100 can display
readings below 40% N2O, the instru-
ment is most accurate between 40
and 100%.
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Instruction 0019-9322
MGC 100/200
Figure 1. Components of the MGC 100/200
A - Gas inlet fitting
B - Gas outlet fitting (MGC 200 only)
C - LCD Display
D - IrDA link
E - Pump ON light / Alarm indicator
F - Press once to switch instrument
ON; press once to start and stop
pump; hold 3 seconds to switch
instrument OFF ( )
G - Battery charging socket
H - MGC 100/200: Press once to
store ‘snapshot’ of gas reading
MGC 200: Press and hold to start
and stop data-logging (f1)
I - Press once for battery level; hold
to start calibration (f2)
J - MGC 100: Button is enabled only
during a span calibration
MGC 200: Press once to toggle
between CO2and CO displays;
hold for peak gas reading (f3)
MGC
2
3
A
J
I
H
D
E
F
G
B
C
2.0 OPERATION
2.1 Important Note
Always ensure that the instrument’s gas outlet (Figure 1, Item B) is un-
obstructed and open to the atmosphere.
2.2 Switching the Instrument ON/OFF
Switch ON the instrument by momentarily pressing the button (Fig-
ure 1, Item F). Switch the instrument OFF by pressing the button for
at least 3 seconds, or until the display goes blank. When first switched
ON, there is a warm-up period of approximately 5 minutes for the MGC
100 and a 1 minute warm-up period for the MGC 200 before gas readings
are displayed. Note that normal fresh-air background readings of CO2is
approximately 340 ppm.
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MGC 100/200
Instruction 0019-9322
2.3 Connecting Instrument to Medical Gas Outlet
Before proceeding, turn ON the instrument and allow it warm-up per
Section 2.2. The pump should be OFF at this time.
After warming up, connect the instrument’s gas inlet through the sup-
plied flow restrictor to the medical gas outlet as follows:
CAUTION: Never apply gas directly from the medical gas
outlet to the instrument, as internal damage to the instrument
can result. The maximum pressure that can be applied to the
instrument is 2 psig, which corresponds to a flow of between
100–200 cc/min.
1. Attach the threaded end of the flow restrictor (supplied with instru-
ment) to a standard medical gas outlet fitting, then attach fitting to
gas outlet on wall.
2. Connect a 2 to 3 foot length of clear, flexible 1/8" tubing (user supplied)
to the barbed end of the flow restrictor .
3. Attach the other end of the plastic tubing to the instrument’s gas inlet
fitting (Figure 1, Item A). Important! If the quality of the gas sample is
suspect, protect the instrument by inserting the supplied PTFE particu-
late filter in-line using appropriate fittings and tubing.
Figure 2. Connecting Instrument to a Medical Gas Outlet
MGC
2
3
FLOW
RESTRICTOR 2 TO 3 FOOT SECTION OF
1/8" TUBING
Attach Flow Restrictor to
a standard Medical Gas Outlet
Fitting, then attach fitting to
gas outlet on wall.
4

Instruction 0019-9322
MGC 100/200
2.4 Starting and Ending a Test
With the instrument turned ON and connected to the medical gas outlet
per Sections 2.2 and 2.3, begin testing with the pump OFF. Read the
display as described in Sections 2.5 and 2.6.
After completing a test, disconnect the sample tubing from the gas outlet.
Purge out any residual gas by first disconnecting the flow restrictor, and
then turning ON the pump by momentarily pressing the button. Allow
the pump to run for approximately 2 minutes before proceeding to the
next test.
2.5 Current Reading Display Mode
Depending on which model of the MGC is being used, the instrument is
capable of displaying the current N2O, or CO2and CO gas readings on its
LCD (Figure 1, Item C) as follows:
MGC 100 –Displays N2O plus battery capacity.
N2O %
99.9
MGC 200 –Displays either CO2or CO. Each measurement is displayed
separately on the instrument’s LCD. Toggle the display between the two
gas readings by momentarily pressing the f3button.
CO2 ppm CO ppm
340 0
2.6 Peak Reading Display Mode (MGC 200)
The MGC 200 can display either current or peak gas readings. Note that
a peak reading is the highest reading taken since the instrument was
switched ON.
f3
5

MGC 100/200
Instruction 0019-9322
Activate the peak-reading mode by pressing and holding the f3button for
3 seconds. Once in the peak-reading mode, toggle the display between
“peak CO2” and “peak CO” by momemtarily pressing the f3button.
peakCO2 peakCO
1,530 200
To return the instrument to its current-reading mode, again press and
hold the f3button for 3 seconds.
To reset the peak gas readings back to the current readings, switch the
instrument OFF and then back ON.
2.7 Storing Readings
There are two data storage modes availiable:
• Snapshot
• Continuous Data Logging
Readings can be stored by either saving the currently displayed reading
(MGC 100 and 200), or starting a continuous data-logging process that
saves the readings at predetermined intervals (MGC 200 only).
The stored data can later be downloaded to a personal computer for
analysis using the instrument’s IrDA link and the optional BACH-
COM software. This software can also be used to alter the data-logging
interval, and save the data to a file for further analysis.
The procedures for storing gas readings for both the MGC 100 and 200
are described in Sections 2.7.1 and 2.7.2.
2.7.1 MGC 100 – Snapshot
After obtaining a steady reading, momentarily press the f1button to
store (take a snapshot of) the reading shown on the display along with
the current time and date.
f3
N2O %
28.7
Clock icon is displayed once for
a snapshot.
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Instruction 0019-9322
MGC 100/200
CO2 ppm
340
Clock icon is displayed once for
a snapshot, and flashes during
continuous logging.
BattLow
340
= represents full charge
Battery
Level
= represents low charge
2.7.2 MGC 200 – Snapshot & Data-Logging
After obtaining a steady reading, momentarily press the f1button to
store (take a snapshot of) the reading shown on the display along with
the current time and date.
Pressing and holding down the f1button for at least 3 seconds starts con-
tinuous data logging of the readings at a preset interval (factory set at 15
minutes). To stop data-logging, momentarily press the f1button.
The instrument can store up to 200 readings. Once the instrument’s stor-
age capacity has been exceeded, the data-logging is terminated.
2.8 Battery Low Display
When the battery voltage falls below a pre-determined level, the display
will alternate between its current or peak display and
In addition, the beeper will emit three rapid notes every 30 seconds. At
this time the instrument should be given a full charge per Section 3.6 as
soon as possible.
2.9 Battery Charge Display (MGC 100)
An indication of the battery’s charge level is obtained by momentarily
pressing the f2button. A bar graph in the lower part of this screen shows
an approximation of the battery’s remaining charge. As the charge re-
duces, the bar graph decreases in size. Typical operating time from a full
charge is approximately 10 hours.
7

MGC 100/200
Instruction 0019-9322
2.10 Fault Condition Warning
Both instruments are capable of alerting the operator of an internal fault
condition (i.e., a sensor failure or blockage in the infrared path).
If a fault occurs, the instrument’s beeper will sound continuously, and
the following message is displayed until the instrument is switched OFF.
If the fault warning is displayed at any time, then the instrument must
be returned to Bacharach for evaluation.
2.11 Gas Alarm (MGC 200)
When the detected gas percentage exceeds a predetermined level, the
alarm indicator (Figure 1, Item E) flashes and the beeper sounds.
The instrument is shipped with the alarm disabled. An operator, how-
ever, can activate the alarm function and set the alarm trip-point using
the optional BACH-COM software.
2.12 Powering Instrument from Charger
Both the MGC 100 and 200 can be continuously powered by the charger
by connecting the charger to the instrument in the following sequence:
1. Switch ON the instrument without the charger attached.
Note: Connecting a charger to an instrument that is switched
OFF causes the instrument to enter its charging mode, which
in turn prevents the instrument from being switched ON.
2. Plug the charger into the appropriate AC wall socket (or 12 VDC when
using the optional in-car charger). Then plug the charger’s output con-
nector into the instrument’s charging socket (Figure 1, Item G).
The instrument will now continuously run, until the charger is removed
and the instrument switched OFF —the monitor will not turn OFF with
the charger attached.
FAULT
8

Instruction 0019-9322
MGC 100/200
RESET OK
FACTORY
SETTINGS
PMG100.5
25/04/01
ID No.
xxxxx

3.0 MAINTENANCE
3.1 Cleaning
Keep the instrument clean by wiping it with a soft cloth dampened with
a mild detergent solution.
3.2 Sunlight
The unit should not be left out in direct sunlight, or in other areas where
excessive heat exists, for long periods since component damage due to
overheating may result.
3.3 Servicing
There are no user-serviceable parts inside the instrument. Unauthorized
disassembly of the unit will invalidate the warranty.
3.4 Software Version / ID Number
With the instrument switched OFF, and while holding down the f1but-
ton, switch ON the instrument to display its software version and issue
date. Releasing the f1button displays the instrument’s ID number for
5 seconds.
3.5 Factory Settings
Important! The instrument should only be returned to its
factory settings when advised by a Bacharach Service Repre-
sentative.
With the instrument switched OFF, and while holding down the f2but-
ton, switch ON the instrument. The display will show:
Keep the f2button depressed until the display shows:
9

MGC 100/200
Instruction 0019-9322
Release the f2button and zero the gas sensor(s) as described in either
Section 3.7 or 3.8.
WARNING! Failure to zero the sensor(s) after resetting the
instrument to its factory settings may cause incorrect gas
readings to be displayed.
3.6 Battery Charging
When the “BattLow” message is displayed (refer to Section 2.8), the in-
strument must be recharged using the supplied battery charger.
Important! The battery has a long shelf life, but it is recom-
mended that the battery be recharged once a month if
left unused. Batteries that have not been charged for several
months should be given at least two charge/discharge cycles
before using the instrument.
As with all rechargeable batteries, there are guidelines that should be
observed: The battery should normally be charged at room temperature.
Charging at temperatures below 54 °F (12 °C) should be avoided since
this may cause a false indication of when the battery is charged, and
could also damage the battery.
Before beginning the charging process, first ensure that the instrument
is switched OFF. Next, plug the supplied charger into the appropriate AC
wall socket (an optional 12 VDC charger with cigarette lighter adapter is
also available). Then plug the charger’s output connector into the instru-
ment’s charging socket (Figure 1, Item G).
The word “CHARGING” appears while the battery is being charged.
Charging time is approximately 2 hours.
Note: If the battery is deeply discharged, the display will
remain blank for a few minutes before the battery begins
charging.
Once the battery is fully recharged, the instrument will emit a beeping
tone for 30 seconds and display the word “CHARGED”. At this time un-
plug the charger and remove its output connector from the instrument.
CHARGING
>>>>>>>>
CHARGED

10

Instruction 0019-9322
MGC 100/200
3.7 Zeroing the N2O Sensor (MGC 100)
Zero the N2O sensor of the MGC 100 as follows:
1. Turn ON the instrument and allow it to warm up per Section 2.2.
2. With the instrument sampling fresh air, turn ON the pump by mo-
mentarily pressing the button and allow the pump to run to purge
out any resident gas. Then turn OFF the pump once a steady reading
is obtained (approx. 60 seconds).
WARNING! It is essential that the instrument is in fresh air
before attempting to zero the sensor. If this condition is not
ensured, incorrect gas readings will occur.
3. Press and hold down the f2button until the following displays appear.
Note that the instrument beeps 5 times when it enters the User Cal
mode, and then emits a steady tone indicating that the f2button can
now be released.
An operator can abort this procedure by momentarily pressing the f2
button.
4. To zero the sensor in ambient air, momentarily press the f1button.
The instrument will display “Air Cal OK” for 2 seconds if the sensor
was successfully zeroed and then reads 0.0%.
If the procedure was unsuccessful, the message
will be displayed. If this happens, retry this procedure. If the proce-
dure is still unsuccessful, then return the instrument to a Bacharach
Service Center for evaluation.
User Cal f1-> Air
f3-> Gas

AirCal N2O %
OK 0.0

AirCal
Failed
11

MGC 100/200
Instruction 0019-9322
3.8 Zeroing the CO2& CO Sensors (MGC 200)
Zero both the CO2and CO sensors of the MGC 200 as follows:
1. Turn ON the instrument and allow it to warm up per Section 2.2.
2. With the instrument sampling fresh air, turn ON the pump by mo-
mentarily pressing the button and allow the pump to run to purge
out any resident gas. Then turn OFF the pump once a steady reading
is obtained (approx. 60 seconds).
WARNING! It is essential that the instrument is in fresh air
before attempting to zero the sensors. If this condition is not
ensured, incorrect gas readings will occur.
3. Press and hold down the f2button until the “Air Cal” screen is dis-
played. Note that battery status is first displayed for approximately
2 seconds.
Air Cal
4. Keep the f2button depressed until the display shows:
Air Cal
OK
If the procedure was unsuccessful, or if the f2button released prema-
turely, then the message
Air Cal
Failed
will be displayed. If this happens, retry the Air Calibration procedure,
ensuring that the instrument is only exposed to fresh air. If the proce-
dure is still unsuccessful, then the instrument must be returned to a
Bacharach Service Center for evaluation.
12

Instruction 0019-9322
MGC 100/200
HOSE
*
REGULATOR
*
N2O
Calibration Cylinder
17 Liter
2
3
Push hose over
the analyzer’s inlet
connector
Adjust regulator knob for an outlet
pressure of 2 psi (corresponding to a
flow rate of between 100 and 200 cc/min.)
Ensure that pump is
not
running.
Pump light must be OFF.
*
Regulator and Hose are part
of Calibration Kit. See Section
4.1, Accessories.
Figure 3. Applying Gas using Bacharach’s Calibration Kit
3.9 Span Calibration (MGC 100)
A span calibration of the MGC 100 consists of flowing a recommended
certified calibration gas of 99.5% N2O (customer supplied) through the
instrument and calibrating the instrument to the applied gas level.
WARNING! If using a gas concentration other than 99.5%,
the instrument’s default span gas value must be changed to
match the applied gas using the optional BACH-COM soft-
ware; otherwise, inaccurate gas readings will result.
CAUTION: Gas flow through the instrument must not exceed
100–200 cc/min. (corresponds to a pressure of approximately
2 psig), as internal damage to the instrument can occur.
A Bacharach supplied calibration kit (refer to Section 4.0) can be used to
flow calibration gas through the instrument, assuming a standard 17 li-
ter gas cylinder is being used. If a different size cylinder is used, then a
flow regulator that fits the cylinder must be supplied by the customer.
1. First zero the N2O sensor per Section 3.7.
2. Connect a customer supplied certified calibration cylinder of 99.5%
N2O gas to a Bacharach regulator and hose as shown in Figure 3.
13

MGC 100/200
Instruction 0019-9322
3. Press and hold down the f2button until the following displays appear.
Note that the instrument beeps 5 times when it enters the User Cal
mode, and then emits a steady tone indicating that the f2button can
now be released.
An operator can abort this procedure by momentarily pressing the f2
button.
4. To calibrate the instrument using span gas, press the f3button. The
following display will appear.
The top line represents the preset calibration value that corresponds
to the applied percentage of calibration gas. The bottom line repre-
sents the current N2O level. (Note that the calibration level is preset
to 99.5%, but this level can be changed using the optional BACH-COM
software.)
5. With the instrument’s pump turned OFF, open the gas regulator and
allow gas to flow until the bottom reading stabilizes; then press the f1
button.
If the gas calibration procedure was successful, the display will show
Cal OK
If the procedure was unsuccessful, the message
GasCal
Failed
will be displayed. If this happens, retry the Gas Calibration procedure,
ensuring that the analyzer is exposed to the correct concentration of
calibration gas. If the procedure is still unsuccessful, then the analyzer
must be returned to a Bacharach Service Center for evaluation.
6. This completes the Gas Calibration procedure. Turn off the regulator;
then remove and store the calibration accessories.
User Cal f1-> Air
f3-> Gas

f1> 99.5
0.0
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Instruction 0019-9322
MGC 100/200
4.0 PARTS & SERVICE
4.1 Replacement Parts and Accessories
Complete Kits
MGC 100 – Includes instrument capable of measuring N2O,
a battery charger, particulate filter, and a flow restrictor ............0019-8058
MGC 200 – Includes instrument capable of measuring
CO2 and CO, a battery charger, particulate filter, and a
flow restrictor ...................................................................................0019-8059
Replacement Parts
110/240 VAC USA & European Plug Charger ...............................0019-3312
Particulate Filter .............................................................................0054-0548
Flow Restrictor.......................................................................................... TBA
Accessories
Calibration Kit (with regulator and tubing)...................................0019-8027
Carrying Case, Large (13 1/2"L x 10 13/16"W x 4"H) .........................0019-3311
Carrying Case, Small (10 5/8"L x 8 1/2"W x 3 3/16"H) ........................0019-3337
In-Car Charger.................................................................................0019-3302
IrDA Interface Kit & BACH-COM Software:
MGC 100 ....................................................................................0019-3301
MGC 200 ....................................................................................0019-3254
Protective Rubber Boot (MGC 100 only).........................................0019-3304
15

MGC 100/200
Instruction 0019-9322
4.2 Bacharach Service Centers
United States
621 Hunt Valley Circle
New Kensington, PA 15068
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Canada
Bacharach of Canada, Inc.
20 Amber St. Unit #7
Markham, Ontario L3R SP4 Canada
Phone: [phone]
Fax: [phone]
Toll Free: 800-328-5217
E-mail: [email protected]
16