® DIOXOR II INSTRUCTION 19-9121 Portable SO2 Analyzer Part No. 19-7038 & 19-7043 Rev. 6 - April 2007 Bacharach, Inc. 621 Hunt Valley Circle, New Kensington, PA 15068 Ph: 724-334-5000 • Fax: 724-334-5001 • E-mail: help@bacharach-inc.com Web: www.bacharach-inc.com Printed in U.S.A.
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 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.
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 understood and utilized to ensure that the instrument is operating properly and is both used and maintained in the proper manner by qualified personnel.
2 TECHNICAL CHARACTERISTICS SO2 Display Range..............0–1999 ppm SO2 Accuracy.............................±10 ppm or ±5% of reading whichever is greater Response Time....................90% of final value within 40 sec. Battery Requirements..........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) Relative Humidity...............10–85% non-condensing Weight (w/o batteries).........12 ozs. (341 grams) Dimensions.....
If batteries are accidently installed in the wrong polarity, a positive temperature coefficient (PTC) thermistor will protect the instrument’s electronic circuity. The instrument will operate once batteries are properly installed and the PTC thermistor is allowed to cool. 3.2 Probe Installation Install the probe by sliding the end of its tubing over the gas inlet port on the top right side of the instrument as shown in Figure 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 SO2 level.
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 The instrument’s elastic strap allows the unit to be either hand-held, or hung on nearby objects. By sliding your hand between the instrument and its elastic strap, you can hold onto the Dioxor II with a minimum of effort.
Overrange When the gas sample exceeds 1999 ppm, a “1” is displayed on the LCD. To clear an overrange condition, 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 SO2 readings under these conditions, the batteries should be replaced as soon as possible.
6 PARTS / SERVICE 6.1 Parts List Item Part No. Battery Cover Probe/Hose/Line Dryer Assy. Flexible Probe Tube (optional) Line Dryer Filter Packing 19-3029 19-3084 19-3104 11-0122 6.2 Bacharach Sales / Service Centers United States México Bacharach, Inc. 621 Hunt Valley Circle New Kensington, PA 15068 Phone: 724-334-5051 Fax: 724-334-5723 Email: help@bacharach-inc.com Bacharach de México Playa Regatas No. 473 Tercer Piso Col. Militar Marte Delegación Iztacalco, 08830 México D.F.
7 HAZARDS OF SULFUR DIOXIDE Properties: Sulfur dioxide (SO2) is a colorless, nonflammable gas that has a strong 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 irritating affect on the mucous membranes of the eyes, nose, throat, and lungs due to the formation of sulfurous acid as the gas comes in contact with the moisture on these surfaces.
First Aid: Move victims to fresh air. If breathing has ceased, begin artificial respiration immediately. Administer oxygen if exposure has been severe and breathing is difficult. Seek medical attention immediately. References: [1] Code of Federal Regulations, Title 29 CFR Parts 1900-1910 (Labor), Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. [2] Threshold Limit Values and Biological Exposure Indices, 198990 ed.
