Bacharach DIOXOR 19-7038 User manual

DIOXOR II

INSTRUCTION 19-9121

Portable SO2Analyzer

Part No. 19-7038 & 19-7043

Rev. 5 - September 1997

Bacharach, Inc.

625 Alpha Drive, Pittsburgh, PA 15238

(412) 963-2157/2164 Fax: (412) 963-2640

Web: www.bacharach-inc.com

Printed in U.S.A. ® Registered Trademarks

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 applicable specifications. Bacharach’s liability and Buyer’s remedy under this

warrantyarelimitedtotherepairorreplacement,atBacharach’soption,ofthisProduct

orpartsthereofreturnedtoSelleratthefactoryofmanufactureandshowntoBacharach

Inc.’sreasonablesatisfactiontohave been defective;providedthatwrittennoticeofthe

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.

Allexpendableitems, suchaselectrochemicalsensors,arewarrantedfor aperiodofsix

months.

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND

ACCEPTED IN LIEU OF (I) ANY AND ALL OTHER WARRANTIES, EXPRESS

ORIMPLIED,INCLUDINGWITHOUTLIMITATIONTHEIMPLIEDWARRANTIES

OFMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE:AND

(II)ANYOBLIGATION,LIABILITY,RIGHT,CLAIMORREMEDYINCONTRACT

ORTORT,WHETHERORNOTARISINGFROMBACHARACH’SNEGLIGENCE,

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

incidentalorconsequentialdamages. Noagreementvaryingorextendingtheforegoing

warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in

writing, signed by a duly authorized officer of Bacharach.

Declaration of Conformity

Manufacturer's Name: Bacharach, Inc.

Manufacturer's Address: 625 Alpha Drive

Pittsburgh, PA 15238 USA

European Operations: Bacharach Instruments International

Kongensgade No. 58

DK-6070 Christisnfeld

Denmark

Product Name: DIOXOR II

Conforms to the following product specifications

EMC: European Directive 89/336/EEC

EN 500081-1 (Emissions)

EN 500082-1 (Immunity)

WARNING!

Because this instrument is used to detect and monitor materials and conditions which are listed by OSHA

or others as potentially hazardous to personnel and property, the information in this manual must be fully

understoodandutilizedtoensure that the instrument is operatingproperlyandis both used and maintained

in the proper manner by qualified personnel. An instrument that is not properly calibrated, operated and

maintained by qualified personnel is likely to provide erroneous information, which could prevent user

awareness of a potentially hazardous situation for the instrument user, other personnel and property.

If, after reading the information in this manual, the user has questions regarding the operation, application

or maintenance of the instrument, supervisory or training assistance should be obtained before use.

Assistance is available by calling your nearest Bacharach Service Center.

1 INTRODUCTION

The Dioxor®II is a commercial-grade

portable instrument designed to display

concentrationsofsulfurdioxide(SO2)gas

between0and2000 ppm. Thisinstrument

showsthepresenceofSO2inagassample

bydrawingthesampleintoitssensorcham-

ber by a built-in motorized pump. Part

#19-7038 comes with a probe. Part #19-

7043 comes without a probe (All non-

proberelatedfunctionsremainthesamein

thisinstruction).

Other features and accessories of the

DioxorIIinclude:Alarge,back-litLiquid

Crystal Display (LCD), which allows the

displaytobereadinanylightingcondition

from direct sun-light to total darkness; a

semi-detachable elastic strap that permits

the instrument to be either hand held, or

hung on nearby objects; a rigid stainless

steel probe with handle, connected to a

flexiblehosewithsamplefilterthatallows

gassamplestobetakenfromcrampedand

confined areas (alternate probes and

condensate traps may be used).

Figure 1. Dioxor II

Figure 2. Battery

Installation

2 TECHNICAL CHARACTERISTICS

SO2Display Range ........... 0-1999 ppm SO2

Accuracy ........................... ±10 ppm or ±5% of reading

whichever is greater

Response Time ................. 90% of final value within 40 sec.

BatteryRequirements ....... 1.5 V, “C” cells, Qty. 4

Operating Time* ............... 14-16 hours, alkaline cells

Operating Temp. Range.... 23 to 104°F (–5 to 40°C)

RelativeHumidity ............. 10-85% non-condensing

Weight (w/o batteries) ...... 12 ozs. (341 grams)

Dimensions ....................... 8.6 x 3.5 x 2.9 inches (218 x 89 x 74 mm)

To prepare the instrument for operation, you

must install four “C” size batteries, and (if

desired)installthehoseandprobeasdescribed

in the following paragraphs.

For your convenience, and to ensure that the

instrument will provide reliable SO2indica-

tions,theSO2sensor is installed and the instru-

mentcalibrated on aknown SO2 concentration

at the factory.

3.1 Battery Installation

Detach the elastic strap's metal clip at the bot-

tom of the instrument, and slide off the battery

coverasshowninFigure 2.Thenwhileobserv-

ingproperbatterypolarity,installfour“C”size

batteriesintotheinstrument’sbatterycompart-

ment. (Recommended battery types: Duracell

Alkaline or equivalent). After the batteries are

installed, replace the battery cover and the

elastic-strap clip.

*Times are with the backlight turned off. Continuous use of the

backlight will decrease battery life.

3 PREPARING THE DIOXOR II

FOR OPERATION

If batteries are accidently installed in the wrong polarity, a positive

temperaturecoefficient(PTC)thermistorwillprotecttheinstrument’s

electronic circuity. The instrument will operate once batteries are

properly installed and the PTC thermistor is allowed to cool.

3.2 Probe Installation

The probe comes disassembled. To add the probe tip:

a. Loosen but DO NOT REMOVE the Knurled Nut (03-2023) on

the main part of the Probe Assembly (19-3076).

b.Insert probe tube into Extended Adapter Block (19-3072).

c. Hand tighten the Knurled Nut (03-2023) then add 1/4 turn to

snug probe to the rest of the probe assembly.

NOTE: In order to prevent the possibility of misplacing the

Front (03-2024) and Back (03-2025) Ferrules, loosen but

DO NOT REMOVE the Knurled Nut (03-2023) before

inserting or removing the Probe Tube (19-3073).

Installthe probe by slidingthe endof itstubing overthe gas inlet port

onthetoprightsideoftheinstrumentasshowninFigure 3.Thetubing

may be difficult to slide over the gas inlet port of the unit for the first

time.Thiswasdoneintentionallytoallowforasnugfit.Usealittledish

washing liquid diluted in water or heat the end of the tube in hot tap

water to help it slide onto the port.

Figure 3. Probe Installation 3

4 OPERATION

To operate the Dioxor II, you simply . . .

•Set its POWER switch to ON,

•Wait for the instrument to warm up (approx. 1 minute),

•Zero the display (if necessary),

•Take a gas sample.

Detailed operating procedures are presented below:

4.1 Power ON/OFF

Turn on the instrument by sliding its POWER

switch to ON. Observe that when power is first

applied, all numerical LCD segments are tested for

5-15 seconds; after which, the LCD shows the detected SO2level. (A

minussignmayappearduringpowerupasthesensorstabilizes.)Turn

off the instrument by sliding the POWER switch to OFF.

Important!Whenstoringtheinstrumentforextendedperiodsoftime,

remove the batteries and ensure that the POWER switch is OFF. The

OFF position places a short across the SO2sensor, thus keeping the

sensor from being destabilized while not in use.

4.2 Zeroing the Instrument

After being turned on and warmed up for at least 1 minute, the

instrument should indicate 000 ±5 ppm in fresh air. If the instrument

needs to be zeroed, proceed as follows:

1. Ensure that the instrument is sampling air that is free of sulfur

dioxide.

NOTE: An indication that the instrument was not zeroed in fresh

air is when a large negative SO2display appears when the

instrument is moved into another area.

2. Using a 1/8" flat-blade screwdriver, turn the

ADJUST potentiometer until the LCD shows 0

ppm. The display shows negative numbers for

zeroing purposes. An instrument can be considered zeroed with a

display bounce of up to ±3 ppm.

Theinstrument'selasticstrapallowstheunittobeeitherhand-held,or

hung on nearby objects.

By sliding your hand between the instrument and its elastic strap, you

canholdontotheDioxorIIwithaminimumofeffort.Theinstrument's

frontpanelslideswitchescanthenbeactuatedbyyourthumbforone-

Important:Ifcondensationisobservedwithinthe hose,donot allow

water level to build up to a point where it cuts off flow.

4.6 Interpreting the Display

Gas Display

The LCD shows SO2levels in the range from 0 to

1999ppm. ThedisplayontherightindicatesanSO2

level of 025 ppm.

4.3 Backlight ON/OFF

The LCD can be read in low-light areas by setting the front panel

LIGHT switch to ON. The backlight stays on until turned off, or until

the POWER switch is set to OFF.

4.4 Using the Strap

handed operation. Or, by releasing the metal clip at the bottom of the

instrument's case, you can hang the instrument by its strap on nearby

objects such as nails, sheet metal, or valve handles.

4.5 Using the Probe

A rigid stainless steel probe with handle, connected to a flexible hose

withsamplefiltercanbeusedtodrawagassampleintotheinstrument

from the room, boilers, and other combustible furnaces.

Both hose and probe are detachable from the instrument when sam-

pling without the probe, or when sampling with a different probe is

desired.

Overrange

When the gas sample exceeds 1999 ppm, a “1” is

displayed on the LCD. To clear an overrange con-

dition, leave the instrument turned on and sample

fresh air until the LCD returns to displaying SO2.

Low Battery Indications

When the battery voltage becomes low, the “LO

BAT” indicator appears. Although the instrument

will continue to operate and give SO2readings

under these conditions, the batteries should be replaced as soon as

possible.

When the battery voltage becomes too low for the

instrument to operate, a “-1” is displayed on the

LCD. No SO2readings are provided under these

conditions.

4.7 Long-Term Storage

When storing the Dioxor II for extended periods of time, set its

POWER switch to OFF and remove the batteries. The POWER OFF

positionplacesashortacrosstheSO2sensor,thuskeepingitfrombeing

destabilized while not in use.

5 MAINTENANCE

The Dioxor II needs to be calibrated at regular intervals to ascertain

that it still meets its accuracy specification. A regular calibration

scheduleshouldbeestablishedbetweenyouandyournearestBachar-

ach Service Center, unless your facility has the necessary calibration

equipment and personnel trained in the maintenance of gas-detection

equipment.Detailedcalibrationproceduresareprovideduponrequest

from the factory. Detailed maintenance procedures and parts lists are

provided in the Service Manual (19-9166).

6 PARTS/SERVICE

6.1 Parts List

Item Part No.

Battery Cover 19-3029

Probe/Hose Assy. 19-3076

6.2 Bacharach Sales/Service Centers

United States

Bacharach S/S Center

625 Alpha Drive

Pittsburgh, PA 15238

(412) 963-2164/2157

(412) 963-2640 FAX

Bacharach S/S Center

8618 Louisiana Place

Merrillville, IN 46410

(219) 736-6178

(219 736-6269 FAX

Bacharach S/S Center

7300 Industrial Park

Rt. 130, Bldg. 22

Pennsauken, NJ 08110

(609) 665-6176

(609) 665-6661 FAX

Bacharach S/S Center

5151 Mitchelldale, B-4

Houston, TX 77092

(713) 683-8141

(713) 683-9437 FAX

Bacharach S/S Center

7281 Garden Grove Blvd.

Suite H

Garden Grove, CA 92841

(714) 895-0050

(714) 895-7950 FAX

International

Bacharach, Instruments Int'l

58 Kongensgade

DK 6070 Christiansfeld

Denmark

45 (74) 563171

45 (74) 563178 FAX

Bacharach of Canada

101 Amber Street, Unit #1

Markham, Ontario L3R 3B2

(905) 470-8985/8039

(905) 470-8963 FAX

7 HAZARDS OF SULFUR DIOXIDE

Properties:

Sulfurdioxide(SO2)isacolorless,nonflammablegasthathasastrong

pungent odor, is twice as heavy as air, and is highly corrosive to

ordinary metals when mixed with water vapor.

Physiological Effects:

Exposure to sulfur dioxide gas in low concentrations produces an

irritatingaffectonthemucousmembranesoftheeyes,nose,throat,and

lungsduetotheformationofsulfurousacidasthegascomesincontact

with the moisture on these surfaces.

Acuteexposurethroughinhalationmayresultindrynessandirritation

of the nose and throat, choking, sneezing, coughing, and broncho-

spasm. Severe overexposure may cause death through pulmonary

edema(abnormalfluidbuildupinthelungs),orfromrespiratoryarrest.

Prolonged or repeated exposure may cause impaired lung function,

bronchitis, hacking cough, nasal irritation and discharge, increased

fatigue,alterationinthesensesoftasteandsmell,and longer duration

of common colds.

PPM Level Attributes:

1 ppm Injurious to plant foliage.

2 ppm Eight-hour time-weighted average (TWA) expo-

sure limit set by the U.S. Occupational Safety and

Health Administration (OSHA)[1][2].

3 ppm Noticeable odor.

6 to 300 ppm Immediate irritation of the nose and throat.

300 to 500 ppm Immediately dangerous to life.

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