Bacharach MGC200 Manuel d'utilisation

Instruction 0019-9322

MGC 100/200

MGC 100 / 200

Instruction 0019-9322

Operation & Maintenance

Rev. 2 – May 2010

Product Leadership • Training • Service • Reliability

MGC

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.

www.mybacharach.com

Instruction 0019-9322

MGC 100/200

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)

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%.

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

2.0 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.

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

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.

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.

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.

N2O %

28.7

Clock icon is displayed once for

a snapshot.

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