2810/2815/2820
Instruction 19-9222
Operation & Maintenance
Rev. 9 – November 2005
Product Leadership • Training • Service • Reliability
2 3
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications. Bacharach’s liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at Bacharach’s option, of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.’s reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given by Buyer to Bacharach Inc. within one (1) year after the date of delivery of this Product by Bacharach, Inc.
Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach’s liability and Buyer’s remedy under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach, to the replacement of this Product or parts thereof that are defective in title.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT ARISING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be limited to those provided herein to the exclusion of any and all other remedies including, without limitation incidental or consequential damages. No agreement varying or extending the foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in writing, signed by a duly authorized officer of Bacharach.
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.
Register Your Warranty by Visiting
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Instruction 19-9222
Contents
1.0 INTRODUCTION ...1 1.1 General ...1 1.2 Man Features ...1 1.3 Unts of Measurement ...1 2.0 OPERATION ...2 2.1 Important Note ...2 2.2 Swtchng the Analyzer ON/OFF ...2 2.3 Pump Operaton (2815/2820) ...3 2.4 Pump Contamnaton (2815/2820) ...3 2.5 Hgh Humdty Gas Samplng (2820) ...3 2.6 Storng Readngs ...4 2.7 Battery Low Dsplay ...4 2.8 Battery Charge Dsplay ...5 2.9 Backlght ...5 2.10 Audble Gas-Level Tone (2815/2820) ...5 2.11 Fault Condton Warnng...5 2.12 Powerng Analyzer from Charger ...6 2.13 Troubleshootng for Slow or Low Readngs (2820) ...6 2.14 Testng Incubators (2820) ...7 3.0 MAINTENANCE ...8 3.1 Cleanng ...8 3.2 Sunlght ...8 3.3 Servcng ...8 3.4 Software Verson / Seral Number ...8 3.5 Factory Settngs ...8 3.6 Battery Chargng ...9 3.7 Calbraton ...10 3.7.1 2810/2815 Calbraton Procedure ...10 3.7.1.1 Ar Calbraton ...10 3.7.1.2 Gas Calbraton ...12 3.7.2 2820 Calbraton Procedure ...14 3.7.2.1 N2 Calbraton ...14 3.7.2.2 Gas Calbraton ...15 4.0 PARTS & SERVICE ...18 4.1 Replacement Parts and Accessores ...18 4.2 Bacharach Servce Centers ...19Instruction 19-9222 1
1.0 INTRODUCTION
1.1 General
Bacharach’s lne of CO2 Analyzers are easy to use, but t s essental that these Operatng Instructons be read and understood by all operators and mantenance personnel pror to usng or servcng the nstrument. The 2810/2815/2820 are compact and lghtweght Carbon Doxde an-alyzers that dsplay the detected level of CO2 n the range of ether 0–10,000 ppm (2810/2815) or 0–60% (2820). The analyzer s based on the nfrared-absorpton prncple to detect the presence of CO2. The 2810 operates by dffuson only, whle the 2815/2820 ncorporates an nternal pump for drawng n gas samples. Smply turn off the pump and the 2815/2820 samples by diffusion. A sampling tube and particulate filter are ncluded wth the 2815/2820 for remote samplng, whle the 2820 also includes a desiccant filter to be used when sampling areas with high humdty. All analyzers can store gas readngs n memory, whch can later be downloaded to a personal computer va ts ntegral IrDA commu-ncatons lnk and the optonal BACH-COM software.1.2 Main Features
• Samplng modes: sample draw (2815/2820) and/or dffuson (2810/2815/2820) • Automatc compensaton for elevaton and changes n barometrc pressure • Varable-ptch tone ndcates CO2 level (2815/2820) • Integral pump (2815/2820) • Battery capacty dsplay • Manual (snapshot) and contnuous data loggng of readngs wth tme and date stamp • Memory capacty for approxmately 100 snapshot readngs and 800 sets of contnuous data logged readngs • IrDA lnk for downloadng stored data to a personal computer • Easy calbraton n fresh ar • Run-whle-chargng capablty1.3 Units of Measurement
Dependng the model ordered, the nstruments’s LCD shows CO2 concen-tratons n ether parts-per-mllon (2810/2815) or percent (2820). Please note that 1% = 10,000 ppm, and 0.01% = 100 ppm.2.0 OPERATION
2.1 Important Note
Always ensure that the analyzer’s gas nlet connector (Fgure 1, Item C) and gas exhaust (Fgure 1, Item B) are unobstructed and open to the at-mosphere. Be careful not to breath drectly on the analyzer whle takng a measurement; otherwse, naccurate CO2 readngs wll result.2.2 Switching the Analyzer ON/OFF
Swtch ON the analyzer by pressng the button. Swtch the analyzer OFF by pressng the button down for at least 3 seconds, or untl the display goes blank. When first switched on, there is a warm-up period be-fore the CO2 level s dsplayed – approxmately 60 seconds for the 2810/ 2815 analyzer, and 20 seconds for the 2820. Note that a normal fresh-ar background readng of CO2 s approxmately 340 ppm. CO2 ANALYZER ppm CO2 340 % CO2 00.04 A - Dgtal dsplay B - Gas exhaust C - Gas nlet connector D - IrDA lnk E - Pump ON lght F - Power ON/OFF (2810/2815/2820); pump ON/OFF (2815/2820) G - Battery chargng socket H - Store readngs (f1) I - Battery status / calbrate (f2) J - Backlght (2810/2815/2820); Audble tone ndcatng CO2 level (2815/2820) (f3) and then or 2 3 B A J I H C D E F G
Instruction 19-9222 3
2.3 Pump Operation
(2815/2820) Wth the analyzer already swtched on, momentarly pressng the but-ton swtches on the pump. Pressng the button agan turns the pump off. The suppled samplng probe and hose assembly can be connected to the gas nlet connector on the top of the analyzer for drawng n gas samples from hard-to-reach locatons.Particulate filter P/N 54-0548 is placed on top of the gas inlet to prevent dust or drt from beng drawn nto the nstrument. Replace the par-ticulate filter about once a month, or when the filter is contaminated as evdenced by a slower response tme. Note that the combned samplng hose and probe length should not exceed 6 feet (1.8 m). Also note that the pump s ntended for use only at normal atmospherc pressure, and s not desgned to draw n gas samples aganst a vacuum or an obstructon such as a knk n the samplng hose. If an obstructon or negatve-pressure gradent s present, then gas will not be drawn nto the analyzer. Please consult the factory for applca- tons where longer samplng lengths are requred, or where t s neces-sary to draw aganst a vacuum.
2.4 Pump Contamination
(2815/2820) Over tme the pump can become contamnated, leadng to a slower response tme and lower readngs. To check for pump contamnaton, turn on the pump and hold your index finger over the inlet fitting. The pump should normally stall. If the pump, however, contnues to run, then the pump s contamnated and the analyzer needs to be returned to Bacharach for repar.2.5 High Humidity Gas Sampling
(2820)When usng the 2820 to draw n gas samples from areas wth hgh levels of humidity (e.g., incubators), first install the small round particulate filter that is supplied with the instrument onto the analyzer’s outlet us-ing a 1.5" section of Portex tubus-ing, and then connect a lure fittus-ing to the particulate filter. Next, connect the Nafion tubing that is also supplied with the analyzer to the luer fitting using a 2" section of Portex tubing. On the other end of the Nafion tubing use a 6 to 12" section of Portex tub-ng to connect to the ncubator. See Fgure 2.
Note: If the supplied Portex tubing is too small to fit onto the
incubator’s gas sample port, then substitute a larger diameter tubing of your choice as long as the tubing is nonabsorbent.
For those stuatons where water droplets may be present n the sample line, you will need to install a water trap between the Nafion tubing and the ncubator’s sample port as descrbed n Secton 2.14. After completng a test, contnue to run the pump whle samplng fresh ar untl the readng s below 0.1. Ths wll purge out any resdual CO2 and mosture before proceedng to the next test.
2.6 Storing Readings
There are two readng-storage modes avalable: • Snapshot • Contnuous Data Loggng Pressng the f1 button once stores (takes a snapshot of) the readng shown on the dsplay. Pressng and holdng down the f1 button for at least 2 seconds starts the contnuous data loggng of the readngs at a preset nterval (factory set at 30 seconds). The analyzer can store up to 100 snapshot readngs and 800 sets of contnuous-data-logged readngs. Once the storage capacty has been exceeded, the latest readngs wll overwrte the oldest stored data. The stored data can be downloaded to a personal computer usng the analyzer’s IrDA lnk and the optonal BACH-COM software. Ths soft-ware can also be used to alter the data-loggng nterval, and produce tables and plots of tme-based CO2 readngs.2.7 Battery Low Display
When the battery voltage falls below a pre-determned level, the dsplay wll alternate between ts normal gas dsplay and In addton, the beeper wll emt three rapd notes every 30 seconds. At ths tme the analyzer should be gven a full charge per Secton 3.6 as soon as possble. BattLow 340 ppm CO2 340
Clock icon is displayed once for a snapshot, and flashes during continuous logging.
Instruction 19-9222 5
2.8 Battery Charge Display
The battery’s remanng charge s dsplayed by pressng the f2 button once. A bar graph n the lower part of ths screen shows an approx-maton of the battery’s remanng charge. As the charge reduces, the bar graph decreases n sze. Typcal operatng tme from a full charge s 7 hours wth the pump runnng, and 10 hours wth the pump off.
2.9 Backlight
To vew the LCD n poor ambent lghtng condtons, turn on the ds-play’s backlght by pressng the f3 button once (wth the analyzer on). The backlght stays on for 5 seconds and then automatcally turns off.2.10 Audible Gas-Level Tone
(2815/2820)An audble tone, whch wll ncrease n ptch wth ncreasng CO2 levels, s actvated by pressng and holdng down the f3 button for 3 seconds. The tone s turned off by agan pressng and holdng down the f3 button for 3 seconds.
2.11 Fault Condition Warning
The analyzer s capable of alertng the operator of an nternal fault condton (.e., a sensor falure or blockage n the nfrared path). If a fault occurs, the analyzer’s beeper wll sound contnuously, and the followng message s dsplayed untl the analyzer s turned off. If the fault warnng s dsplayed at any tme, then the analyzer must be returned to Bacharach for servcng. FAULT = represents low charge = represents full charge Battery Level
2.12 Powering Analyzer from Charger
The analyzer can be contnuously powered by ts charger by connectng the charger as follows:
1. Swtch 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 nto the approprate AC wall socket (or 12 VDC when usng the optonal cgarette lghter adapter). Then plug the charger’s output connector nto the analyzer’s chargng socket (Fgure 1, Item G).
The analyzer wll now contnuously run untl t s swtched OFF.
2.13 Troubleshooting for Slow or
Low Readings
(2820)It normally takes between 1 and 2 mnutes to obtan a peak readng when testng an ncubator. A slow or low readng can be caused by ether a clogged desiccant filter or a contaminated CO2 sensor. Do the followng to test for slow or low readngs:
1. Remove both filters and sample again.
2. If this cures the problem, first replace the desiccant filter
(P/N 07-1645) and sample again. Note that the particulate filter rarely becomes clogged, but if the problem returns with both fiters installed, replace the particulate filter (P/N 54-0548).
3. If the problem persists with the filters removed, reset the instrument to the factory settngs per Secton 3.5. If the reset s OK, then calbrate the nstrument per Secton 3.7.2.
4. If the factory reset fals, the CO2 sensor s contamnated and the n-strument needs to be returned to Bacharach for repar and calbraton.
Instruction 19-9222 7
2.14 Testing Incubators
(2820)When testng ncubators wth the Model 2820, t s mportant to keep mosture from enterng the nstrument. Mosture can contamnate the IR cell and affect the readngs.
A Gas Dryer Tube (Nafion) is supplied with the instrument to remove excess water vapor (humidity) – refer to Section 2.5. The Nafion tube must be used at all tmes when testng n hgh humdty envronments. When testng water-jacketed ncubators, however, the potental exsts of drawng water droplets that form nsde the ncubator’s nternal sample line through the Nafion tubing and into the instrument. A water trap is provded wth the nstrument as an accessory to prevent water from be-ng drawn nto the nstrument. The water trap s nstalled between the incubator and the Nafion tubing as shown in Figure 2.
The need for the water trap can be determned by takng a few tests wth t connected as descrbed above. If water does not accumulate wthn the trap, then discontinue its use and just use the Nafion tubing. If the Nafion tubing becomes contaminated with water droplets, dry it out by flushing the tubing with a dry gas such as N2. Nafion tubing requires no other mantenance.
Figure 2. Installation of Nafion Tubing & Water Trap
2 3 INCUBATOR 6 to 12" PORTEX TUBING 2" PORTEX TUBING 1.5" PORTEX TUBING WATER TRAP
(Note direction of arrow)
Important! Remove particulate
filter element from inside of water trap
NAFION TUBING
PARTICULATE FILTER LUER FITTING
3.0 MAINTENANCE
3.1 Cleaning
Keep the analyzer clean by wpng t wth a soft cloth dampened wth a mld detergent soluton.3.2 Sunlight
The unt should not be left out n drect sunlght, or n other areas where excessve heat exsts, for long perods snce component damage due to overheatng may result.3.3 Servicing
There are no user-servceable parts nsde the analyzer. Unauthorzed dsassembly of the unt wll nvaldate the warranty.3.4 Software Version / Serial Number
Wth the analyzer swtched OFF, and whle holdng down the f1 button, swtch ON the analyzer to dsplay ts software verson and ssue date. Releasng the f1 button dsplays the analyzer’s ID number for 5 seconds.
3.5 Factory Settings
Important! The analyzer should only be returned to its
fac-tory settings when advised by a Bacharach Service Repre-sentative. Wth the analyzer swtched OFF, and whle holdng down the f2 button, swtch ON the analyzer. The dsplay wll show Keep the f2 button depressed untl the dsplay shows Cd v1.24 20/5/98 ID No. xxxxx RESET OK FACTORY SETTINGS
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Instruction 19-9222 9
Release the f2 button and follow the nstructons from your local servce representatve.
WARNING: After resetting the analyzer to its factory settings,
it must be calibrated as described in Section 3.7 or erroneous gas reading may result.
3.6 Battery Charging
When the ‘BattLow’ message s dsplayed (refer to Secton 2.7), the ana-lyzer must be recharged usng the suppled 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 analyzer.
As wth all rechargeable batteres, there are gudelnes that should be observed: The battery should normally be charged at room temperature. Chargng at temperatures below 54 °F (12 °C) should be avoded snce ths may cause a false ndcaton of when the battery s charged, and could also damage the battery.
Before beginning the charging process, first ensure that the analyzer is swtched OFF. Next, plug the suppled charger nto the approprate AC wall socket (an optonal 12 VDC charger wth cgarette lghter adapter s also avalable). Then plug the charger’s output connector nto the ana-lyzer’s chargng socket (Fgure 1, Item G). The word “CHARGING” appears whle the battery s beng charged. Chargng tme s approxmately 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 s fully recharged, the analyzer wll emt a beepng tone for 30 seconds and dsplay the word “CHARGED”. At ths tme unplug the charger and remove ts output connector from the analyzer. CHARGING >>>>>>>>
→
CHARGED3.7 Calibration
Calbraton of a 2810/2815/2820 CO2 Analyzer consists of first performing ether an Air Calibration on a 2810/2815 analyzer that zeros the nstru-ment usng fresh ambent ar, or an N2 Calibration on a 2820 analyzer that zeros the nstrument usng 100% N2. Factory calbraton provdes the best accuracy over the analyzer’s entre detecton range; however, the user can perform the optonal Gas Cal- ibration procedure that wll mprove the analyzer’s accuracy at a pre-programmed calbraton pont of 2,500 ppm CO2 for the 2810/2815, and 5% CO2 for the 2820. Note that the pre-programmed calbraton pont can be changed usng BACH-COM software verson 2.22 or hgher. It s recommended that an Ar Calbraton or N2 Calbraton be per-formed at the begnnng of each work day or each tme the nstrument s swtched OFF/ON. The analyzer should also be checked on a perodc bass wth a hgher concentraton of CO2 to ensure that t stll meets ts accuracy specification. Follow the procedure under Secton 3.7.1 to calbrate a 2810/2815 Low Range (LR) Analyzer, or the procedure under Secton 3.7.2 to calbrate a 2820 Hgh Range (HR) Analyzer.
3.7.1 2810/2815 Calibration Procedure
3.7.1.1 Air Calibration Perform ths procedure n an uncontamnated envroment such as out-sde fresh ar, an empty room, or corrdor where the ar s assumed to contan 340 ppm CO2.Important! DO NOT perform an air calibration after
sam-pling high concentrations of CO2 gas. Also, be careful that
your breath does not affect this procedure.
1. Swtch ON the analyzer, and then allow t to sample fresh ar for 5 mnutes. Durng ths tme, the nternal pump of a 2815 Analyzer should be turned OFF.
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Instruction 19-9222 11
2. Press and hold down the f2 button untl the ‘User Cal’ screen s ds-played. Note that battery status is first displayed for approximately 2 seconds. User Cal Wat untl the analyzer automatcally swtches to ts ‘Ar/Gas’ screen before proceedng. f1-> Air f3-> Gas 3. Press the f1 button to zero the analyzer usng fresh ambent ar. If the ar calbraton procedure was successful, the dsplay wll show AirCal OK If the procedure was unsuccessful, the message AirCal Failed wll be dsplayed. If ths happens, retry the Ar Calbraton procedure, ensurng that the analyzer s only exposed to fresh ar. If the pro-cedure s stll unsuccessful, then the analyzer must be returned to a Bacharach Servce Center for evaluaton. 4. Ths completes the Ar Calbraton procedure. If desred the analyzer can now be spanned to a known concentraton of CO2 gas per Secton 3.7.1.2.
3.7.1.2 Gas Calibration
WARNING: This procedure assumes that you are using the
Bacharach Calibration Kit as listed in Section 4.1, Calibration Accessories. When using a non Bacharach gas regulator, however, you must also use an in-line flowmeter to ensure that the gas flow to the analyzer is between 100 and 200 cc/minute. Improper flow can cause erroneous gas readings!
Important! Always perform an Air Calibration first.
1. Press and hold down the f2 button untl the ‘User Cal’ screen s ds-played. User Cal Wat untl the analyzer automatcally swtches to ts ‘Ar/Gas’ screen before proceedng. f1-> Air f3-> Gas 2. Press the f3 button to dsplay the Gas Calbraton screen. f1> 2500 340 The top lne shows the preset calbraton gas value that must be ap-pled to the analyzer’s nlet. The bottom lne shows the current CO2 readng.
Note: The analyzer is most accurate around the calibration
gas value. If the analyzer, however, is routinely used to moni-tor CO2 levels that are much higher or lower than the preset
value, then it is recommended that the analyzer be calibrated on a concentration of gas that is close to the gas level being monitored. This operation requires that the preset calibration gas value be reset higher or lower using the optional BACH-COM software, version 2.22 or higher.
Instruction 19-9222 13
3. Usng the Calbraton Accessores lsted n Secton 4.1, attach a CO2 calbraton gas cylnder to the nlet of the analyzer as shown n Fg-ure 3. The appled CO2 concentraton must equal the gas value ds-played n the top lne of the Gas Calbraton screen.
Important! Do not attempt to calibrate the analyzer if the
pressure gauge closest to the tank reads below 5 psi.
4. Adjust the regulator attached to the gas cylnder for an outlet pressure of 2 psi (equivalent to a flow rate of approximately 120 cc/minute). Observe that the gas level dsplayed on the second lne of the Gas Calbraton screen should slowly rse to the value dsplayed n the top lne.
5. Allow the calibration gas to flow until the second lne of the Gas Cal-braton screen stablzes, then press the f1 button. If the gas calbraton procedure was successful, the dsplay wll show GasCal OK If the procedure was unsuccessful, the message GasCal Failed wll be dsplayed. If ths happens, retry the Gas Calbraton procedure, ensurng that the analyzer s exposed to the correct concentraton of calbraton gas. If the procedure s stll unsuccessful, then the analyzer must be returned to a Bacharach Servce Center for evaluaton. 6. Ths completes the Gas Calbraton procedure. Shut off the regulator; then remove and store the calbraton accessores.
3.7.2 2820 Calibration Procedure
3.7.2.1 N2 CalibrationThe followng procedure uses 100% N2 to zero the analyzer. (Fresh amb-ent ar that s assumed to contan 340 ppm CO2 can be used f N2 s not avalable.)
Important! DO NOT perform an N2 calibration after
sam-pling high concentrations of CO2 gas. Also, be careful that
your breath does not affect this procedure.
1. Swtch ON the analyzer. But before proceedng, allow the analyzer to sample fresh ar for 5 mnutes wth ts nternal pump turned OFF.
CO2 HR % CO2
Analyzer 00.00
2. Press and hold down the f2 button untl the ‘User Cal’ screen s ds-played. Note that battery status is first displayed for approximately 2 seconds. User Cal Wat untl the analyzer automatcally swtches to ts ‘N2/Gas’ screen before proceedng. f1-> N2 f3-> Gas 3. Usng the calbraton accessores lsted n Secton 4.1, attach a 100% N2 gas cylnder to the nlet of the analyzer as shown n Fgure 3. Then adjust the regulator attached to the gas cylnder for an outlet pressure of 2 psi (equivalent to a flow rate of approximately 120 cc/minute). If N2 s unavalable, turn ON the analyzer’s pump and allow t to draw n fresh ar for at least 30 seconds before proceedng.
Important! When using N2 gas, do not attempt to calibrate the
analyzer if the pressure gauge closest to the tank reads below 5 psi.
Instruction 19-9222 15
4. Press the f1 button to zero the analyzer usng 100% N2 or fresh ar. If the N2 Zero procedure was successful, the dsplay wll show N2 Cal OK If the procedure was unsuccessful, the message N2 Cal Failed wll be dsplayed. If ths happens, retry the N2 Zero procedure, en-surng that the analyzer s only exposed to ether 100% N2 or fresh ar. If the procedure s stll unsuccessful, then the analyzer must be returned to a Bacharach Servce Center for evaluaton. 5. Ths completes the N2 Calbraton procedure. If desred the analyzer can now be spanned to a known concentraton of CO2 gas per Secton 3.7.2.2. 3.7.2.2 Gas Calibration
WARNING: This procedure assumes that you are using the
Bacharach Calibration Kit as listed in Section 4.1, Calibration Accessories. When using a non Bacharach gas regulator, however, you must also use an in-line flowmeter to ensure that the gas flow to the analyzer is between 100 and 200 cc/minute. Improper flow can cause erroneous gas readings!
Important! Always zero the analyzer first using 100% N2 or
fresh ambient air.
1. If the pump s runnng, turn t OFF.
2. Press and hold down the f2 button untl the ‘User Cal’ screen s ds-played.
Wat untl the analyzer automatcally swtches to ts ‘N2/Gas’ screen before proceedng. f1-> N2 f3-> Gas 3. Press the f3 button to dsplay the Gas Calbraton screen. f1->05.0 00.0 The top lne shows the preset calbraton gas value that must be ap-pled to the analyzer’s nlet. The bottom lne shows the current CO2 readng.
Note: The analyzer is most accurate around the calibration
gas value. If the analyzer, however, is routinely used to moni-tor CO2 levels that are much higher or lower than the preset
value, then it is recommended that the analyzer be calibrated on a concentration of gas that is close to the gas level being monitored. This operation requires that the preset calibration gas value be reset higher or lower using the optional BACH-COM software, version 2.22 or higher.
4. Remove the 100% N2 cylnder (f used); then attach a CO2 calbraton gas cylnder to the nlet of the analyzer as shown n Fgure 3. The ap-pled CO2 concentraton must equal the gas value dsplayed n the top lne of the Gas Calbraton screen.
Important: Do not attempt to calibrate the analyzer if the
pressure gauge closest to the tank reads below 5 psi.
5. Adjust the regulator attached to the gas cylnder for an outlet pressure of 2 psi (equivalent to a flow rate of approximately 120 cc/minute). Ob- serve that the gas level dsplayed on the second lne of the Gas Calbra-ton screen should slowly rse to the value dsplayed n the top lne.
Instruction 19-9222 17
6. Allow the calibration gas to flow until the second lne of the Gas Cal-braton screen stablzes, then press the f1 button. If the gas calbraton procedure was successful, the dsplay wll show GasCal OK If the procedure was unsuccessful, the message GasCal Failed wll be dsplayed. If ths happens, retry the Gas Calbraton procedure, ensurng that the analyzer s exposed to the correct concentraton of calbraton gas. If the procedure s stll unsuccessful, then the analyzer must be returned to a Bacharach Servce Center for evaluaton. 7. Ths completes the Gas Calbraton procedure. Turn off the regulator; then remove and store the calbraton accessores.
Figure 3. Calibration Equipment
(/3%
2%'5,!4/2 #/ #ALIBRATION 0USH THE CONNECTOR !DJUST PRESSURE FLOW &OR SURE 0UMP4.0 PARTS & SERVICE
4.1 Replacement Parts and Accessories
Complete Kits
CO2 Analyzer 2810 – measures 0 to 10,000ppm CO2, ncludes
particulate filter & wall charger ...19-8023 CO2 Analyzer 2815 – meausres 0 to 10,000 ppm CO2, ncludes
internal pump, particulate filter, wall charger, & gas sample
tube ...19-8028 CO2 Analyzer 2820 – measures 0 to 60% CO2, ncludes nternal
pump, wall charger, particulate filter, water trap, Nafion &
Portex tubng ...19-8025 Replacement Parts
110/240 VAC USA & European Wall Charger (all) ...19-3312 Luer Fttng, Male (2815/2820) ...103-2563 Gas Sample Tube, 6 nches (2815) ...11-0118 Partculate Flter (2815/2820) ...54-0548 Nafion & Portex Tubing Kit (2820) ...19-3318 Water Trap (2820) ...19-3265 Accessories
12 VDC Charger w/ Cgarette Lghter Adapter ...19-3302 Carryng Case, Small (10 5/8"L x 8 1/2"W x 3 3/16"H) ...19-3337 Carryng Case, Large (13 1/2"L x 10 13/16"W x 4"H)...19-3311 IrDA Interface Kit & BACH-COM Software ...19-3301 Protectve Boot ...19-3304 Table Top Stand ...19-3307 Calibration Accessories Calbraton Kt(w/ regulator and tubng) ...19-8027 Ar Cal Check Gas, 340 ppm CO2, 17 lter tank (2810/2815) ...24-1125 Calbraton Gas, 2,500 ppm CO2, 17 lter tank (2810/2815) ...24-1130 Calbraton Gas, 100% N2, 17 lter tank (2820) ...23-4003 Calbraton Gas, 5.0% CO2, 17 lter tank (2820) ...24-1126
Instruction 19-9222 19
4.2 Bacharach Service Centers
United States Bacharach Inc. 621 Hunt Valley Crcle New Kensngton, PA 15068 Phone: 724-334-5051 Fax: 724-334-5723 Emal: help@bacharach-nc.com Canada Bacharach of Canada, Inc. 250 Shelds Court Unt #3 Markham, Ontaro L3R 9W7 Canada Phone: 905-470-8985 Fax: 905-470-8963 Emal: bachcan@drect.com México Bacharach de Méxco Playa Regatas No. 473 Tercer Pso Col. Mltar Marte Delegacón Iztacalco, 08830 Méxco D.F. Méxco Phones: +52-555-634-7740 +52-555-634-7741 Fax: +52-555-634-7738 Emal: bacharachservc[email protected] Webste: www.bacharach-mexco.com Europe Bacharach Instruments Soveregn House, Queensway Royal Leamngton Spa Warwckshre CV31 3JR Unted Kngdom Phone: +44-1926-338111 Fax: +44-1926-338110 Emal: [email protected]
Instruction 19-9222 21
Instruction 19-9222 23
