Bacharach 2810 Guía de solución de problemas

CO2Analyzer

2810/2815/2820

Instruction 19-9222

Operation & Maintenance

Rev. 9 – November 2005

Product Leadership • Training • Service • Reliability

AInstruction 19-9222

WARRANTY

Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from

defects in material and manufacture and will conform substantially to Bacharach Inc.’s

alicable secications. 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.

THEFOREGOINGWARRANTIESAREEXCLUSIVEANDAREGIVENANDACCEPTEDIN

LIEU OF (I)ANYANDALLOTHER 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,ACTUALOR 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 ofcer of Bacharach.

Notice:

Product imrovements and enhancements are continuous, therefore the secications 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.bacharach-inc.com

CO2Analyzer 2810/2815/2820

Instruction 19-9222 i

Contents

1.0 INTRODUCTION................................................................................1

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

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

1.3 Units of Measurement ...............................................................1

2.0 OPERATION .......................................................................................2

2.1 Important Note .......................................................................... 2

2.2 Switching the Analyzer ON/OFF .............................................. 2

2.3 Pump Operation (2815/2820) ....................................................3

2.4 Pump Contamination (2815/2820) ............................................3

2.5 High Humidity Gas Sampling (2820) .......................................3

2.6 Storing Readings........................................................................4

2.7 Battery Low Display ..................................................................4

2.8 Battery Charge Display.............................................................5

2.9 Backlight ....................................................................................5

2.10 Audible Gas-Level Tone (2815/2820) .......................................5

2.11 Fault Condition Warning..........................................................5

2.12 Powering Analyzer from Charger ............................................6

2.13 Troubleshooting for Slow or Low Readings (2820).................. 6

2.14 Testing Incubators (2820)......................................................... 7

3.0 MAINTENANCE .................................................................................8

3.1 Cleaning.......................................................................................8

3.2 Sunlight .......................................................................................8

3.3 Servicing ......................................................................................8

3.4 Software Version / Serial Number .............................................8

3.5 Factory Settings .......................................................................... 8

3.6 Battery Charging ........................................................................ 9

3.7 Calibration.................................................................................10

3.7.1 2810/2815 Calibration Procedure ................................10

3.7.1.1 Air Calibration .............................................. 10

3.7.1.2 Gas Calibration ............................................. 12

3.7.2 2820 Calibration Procedure .........................................14

3.7.2.1 N2Calibration ...............................................14

3.7.2.2 Gas Calibration ............................................. 15

4.0 PARTS & SERVICE .........................................................................18

4.1 Replacement Parts and Accessories......................................... 18

4.2 Bacharach Service Centers.......................................................19

CO2Analyzer 2810/2815/2820

Instruction 19-9222

Notes:

CO2Analyzer 2810/2815/2820

Instruction 19-9222 1

1.0 INTRODUCTION

1.1 General

Bacharach’s line of CO2Analyzers are easy to use, but it is essential that

these Operating Instructions be read and understood by all operators

and maintenance personnel prior to using or servicing the instrument.

The 2810/2815/2820 are compact and lightweight Carbon Dioxide an-

alyzers that display the detected level of CO2in the range of either

0–10,000 ppm (2810/2815) or 0–60% (2820). The analyzer is based on

the infrared-absorption principle to detect the presence of CO2. The 2810

operates by diffusion only, while the 2815/2820 incorporates an internal

pump for drawing in gas samples. Simply turn off the pump and the

2815/2820 samples by diffusion. A sampling tube and particulate lter

are included with the 2815/2820 for remote sampling, while the 2820

also includes a desiccant lter to be used when sampling areas with high

humidity. All analyzers can store gas readings in memory, which can

later be downloaded to a personal computer via its integral IrDA commu-

nications link and the optional BACH-COM software.

1.2 Main Features

•Sampling modes:

sample draw (2815/2820) and/or diffusion (2810/2815/2820)

•Automatic compensation for elevation and changes

in barometric pressure

•Variable-pitch tone indicates CO2level (2815/2820)

•Integral pump (2815/2820)

•Battery capacity display

•Manual (snapshot) and continuous data logging of readings

with time and date stamp

•Memory capacity for approximately 100 snapshot readings and

800 sets of continuous data logged readings

•IrDA link for downloading stored data to a personal computer

•Easy calibration in fresh air

•Run-while-charging capability

1.3 Units of Measurement

Depending the model ordered, the instruments’s LCD shows CO2concen-

trations in either parts-per-million (2810/2815) or percent (2820). Please

note that 1% = 10,000 ppm, and 0.01% = 100 ppm.

CO2Analyzer 2810/2815/2820

Instruction 19-9222

2.0 OPERATION

2.1 Important Note

Always ensure that the analyzer’s gas inlet connector (Figure 1, Item C)

and gas exhaust (Figure 1, Item B) are unobstructed and open to the at-

mosphere. Be careful not to breath directly on the analyzer while taking

a measurement; otherwise, inaccurate CO2readings will result.

2.2 Switching the Analyzer ON/OFF

Switch ON the analyzer by pressing the button. Switch the analyzer

OFF by pressing the button down for at least 3 seconds, or until the

display goes blank. When rst switched on, there is a warm-up period be-

fore the CO2level is displayed – approximately 60 seconds for the 2810/

2815 analyzer, and 20 seconds for the 2820. Note that a normal fresh-air

background reading of CO2is approximately 340 ppm.

CO2

ANALYZER

ppm CO2

340

% CO2

00.04

Figure 1. Components of the CO2Analyzer

A - Digital display

B - Gas exhaust

C - Gas inlet connector

D - IrDA link

E - Pump ON light

F - Power ON/OFF (2810/2815/2820);

pump ON/OFF (2815/2820)

G - Battery charging socket

H - Store readings (f1)

I - Battery status / calibrate (f2)

J - Backlight (2810/2815/2820);

Audible tone indicating CO2level

(2815/2820) (f3)

and

then or

CO2Analyzer 2810/2815/2820

Instruction 19-9222 3

2.3 Pump Operation (2815/2820)

With the analyzer already switched on, momentarily pressing the but-

ton switches on the pump. Pressing the button again turns the pump

off. The supplied sampling probe and hose assembly can be connected

to the gas inlet connector on the top of the analyzer for drawing in gas

samples from hard-to-reach locations.

Particulate lter P/N 54-0548 is placed on top of the gas inlet to prevent

dust or dirt from being drawn into the instrument. Replace the par-

ticulate lter about once a month, or when the lter is contaminated as

evidenced by a slower response time.

Note that the combined sampling hose and probe length should not

exceed 6 feet (1.8 m). Also note that the pump is intended for use only at

normal atmospheric pressure, and is not designed to draw in gas samples

against a vacuum or an obstruction such as a kink in the sampling hose.

If an obstruction or negative-pressure gradient is present, then gas will

not be drawn into the analyzer. Please consult the factory for applica-

tions where longer sampling lengths are required, or where it is neces-

sary to draw against a vacuum.

2.4 Pump Contamination (2815/2820)

Over time the pump can become contaminated, leading to a slower

response time and lower readings. To check for pump contamination,

turn on the pump and hold your index nger over the inlet tting. The

pump should normally stall. If the pump, however, continues to run,

then the pump is contaminated and the analyzer needs to be returned to

Bacharach for repair.

2.5 High Humidity Gas Sampling (2820)

When using the 2820 to draw in gas samples from areas with high levels

of humidity (e.g., incubators), rst install the small round particulate

lter that is supplied with the instrument onto the analyzer’s outlet us-

ing a 1.5" section of Portex tubing, and then connect a lure tting to the

particulate lter. Next, connect the Naon tubing that is also supplied

with the analyzer to the luer tting using a 2" section of Portex tubing.

On the other end of the Naon tubing use a 6 to 12" section of Portex tub-

ing to connect to the incubator. See Figure 2.

Note: If the supplied Portex tubing is too small to t onto the

incubator’s gas sample port, then substitute a larger diameter

tubing of your choice as long as the tubing is nonabsorbent.

CO2Analyzer 2810/2815/2820

Instruction 19-9222

For those situations where water droplets may be present in the sample

line, you will need to install a water trap between the Naon tubing and

the incubator’s sample port as described in Section 2.14.

After completing a test, continue to run the pump while sampling fresh

air until the reading is below 0.1. This will purge out any residual CO2

and moisture before proceeding to the next test.

2.6 Storing Readings

There are two reading-storage modes available:

• Snapshot

• Continuous Data Logging

Pressing the f1button once stores (takes a snapshot of) the reading

shown on the display.

Pressing and holding down the f1button for at least 2 seconds starts the

continuous data logging of the readings at a preset interval (factory set

at 30 seconds).

The analyzer can store up to 100 snapshot readings and 800 sets of

continuous-data-logged readings. Once the storage capacity has been

exceeded, the latest readings will overwrite the oldest stored data.

The stored data can be downloaded to a personal computer using the

analyzer’s IrDA link and the optional BACH-COM software. This soft-

ware can also be used to alter the data-logging interval, and produce

tables and plots of time-based CO2readings.

2.7 Battery Low Display

When the battery voltage falls below a pre-determined level, the display

will alternate between its normal gas display and

In addition, the beeper will emit three rapid notes every 30 seconds. At this time

the analyzer should be given a full charge per Section 3.6 as soon as possible.

BattLow

340

ppm CO2

340

Clock icon is displayed once for

a snashot, and ashes during

continuous logging.

CO2Analyzer 2810/2815/2820

Instruction 19-9222 5

2.8 Battery Charge Display

The battery’s remaining charge is displayed by pressing the f2button

once. A bar graph in the lower part of this screen shows an approxi-

mation of the battery’s remaining charge. As the charge reduces, the

bar graph decreases in size. Typical operating time from a full charge is

7 hours with the pump running, and 10 hours with the pump off.

2.9 Backlight

To view the LCD in poor ambient lighting conditions, turn on the dis-

play’s backlight by pressing the f3button once (with the analyzer on).

The backlight stays on for 5 seconds and then automatically turns off.

2.10 Audible Gas-Level Tone (2815/2820)

An audible tone, which will increase in pitch with increasing CO2levels,

is activated by pressing and holding down the f3button for 3 seconds.

The tone is turned off by again pressing and holding down the f3button

for 3 seconds.

2.11 Fault Condition Warning

The analyzer is 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 analyzer’s beeper will sound continuously, and the following

message is displayed until the analyzer is turned off.

If the fault warning is displayed at any time, then the analyzer must be

returned to Bacharach for servicing.

FAULT

= represents low charge= represents full charge

Battery

Level

CO2Analyzer 2810/2815/2820

Instruction 19-9222

2.12 Powering Analyzer from Charger

The analyzer can be continuously powered by its charger by connecting

the charger as follows:

1. Switch ON the analyzer without the charger attached.

Note: Connecting a charger to an analyzer that is switched

OFF causes the analyzer to enter its charging mode, which in

turn prevents the analyzer from being switched ON.

2. Plug the charger into the appropriate AC wall socket (or 12 VDC when

using the optional cigarette lighter adapter). Then plug the charger’s

output connector into the analyzer’s charging socket (Figure 1,

Item G).

The analyzer will now continuously run until it is switched OFF.

2.13 Troubleshooting for Slow or

Low Readings (2820)

It normally takes between 1 and 2 minutes to obtain a peak reading

when testing an incubator. A slow or low reading can be caused by either

a clogged desiccant lter or a contaminated CO2sensor. Do the following

to test for slow or low readings:

1. Remove both lters and sample again.

2. If this cures the problem, rst replace the desiccant lter

(P/N 07-1645) and sample again. Note that the particulate lter rarely

becomes clogged, but if the problem returns with both ters installed,

replace the particulate lter (P/N 54-0548).

3. If the problem persists with the lters removed, reset the instrument

to the factory settings per Section 3.5. If the reset is OK, then calibrate

the instrument per Section 3.7.2.

4. If the factory reset fails, the CO2sensor is contaminated and the in-

strument needs to be returned to Bacharach for repair and calibration.

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