Bacharach Fitness Electronics 19 7037 User Manual

OXOR® II  
INSTRUCTION 19-9126  
Portable Oxygen Analyzer  
Part No. 19-7037  
& 19-7044  
Rev. 6 – October 1999  
Bacharach, Inc.  
621 Hunt Valley Circle, New Kensington, PA 15068  
Printed in U.S.A.  
® Registered Trademark  
 
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. 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  
®
TheOxor IIisacommercial-gradepor-  
tableinstrumentdesignedtodisplaycon-  
centrationsofoxygen(O2)gasbetween0  
to 25%. This instrument shows the pres-  
enceofO2 inagassamplebydrawingthe  
sampleintoitssensorchamberbyabuilt-  
inmotorizedpump.Part#19-7037comes  
with a probe. Part #19-7044 comes with-  
out a probe (All non-probe related func-  
tionsremainthesame inthisinstruction).  
Other features and accessories of the  
Oxor II include: A large, back-lit Liquid  
CrystalDisplay(LCD),whichallowsthe  
displaytobereadinanylightingcondition  
from direct sun-light to total darkness; a  
semi-detachableelasticstrapthatpermits  
the instrument to be either hand held, or  
hung on nearby objects; a rigid stainless  
steel probe with sample filter that allows  
gas samples to be taken from cramped  
and confined areas (alternate probes and  
condensate traps may be used).  
Figure 1. Oxor II  
1
 
2
TECHNICAL CHARACTERISTICS  
O2 Display Range............. 0-25% O2  
Accuracy .......................... ±0.8% O2  
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) ..... 13.6 ozs. (385 grams)  
Dimensions ...................... 8.6 x 3.5 x 2.9 inches (218 x 89 x 74 mm)  
* Timesarewiththebacklightturnedoff. Continuoususeofthebacklightwill  
decrease battery life.  
3
PREPARING THE OXOR II  
FOR OPERATION  
To prepare the instrument for operation, you  
must install four “C” size batteries, and (if  
desired) install the hose and probe as described  
in the following paragraphs.  
For your convenience, and to ensure that the  
instrument will provide reliable O2 indications,  
the O2 sensor is installed and the instrument  
calibrated on a known O2 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, installfourCsize  
batteriesintotheinstrument’sbatterycompart-  
ment. (Recommended battery types: Duracell  
Alkaline or equivalent). After the batteries are  
installed, replace the battery cover and the  
elastic-strap clip.  
Figure 2. Battery  
Installation  
2
 
If batteries are accidently installed in the wrong polarity, a positive  
temperaturecoefficient(PTC)thermistorwillprotecttheinstrument’s  
electronic circuitry. 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 hose over the gas inlet port  
on the top right side of the instrument as shown in Figure 3.  
Figure 3. Probe Installation  
3
 
4
OPERATION  
To operate the Oxor II, you simply . . .  
Set its POWER switch to ON,  
Wait for the instrument to warm up (approx. 1 minute),  
Span 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 and the deci-  
mal point are tested for 5-15 seconds; after which, the LCD shows the  
detected O2 level. (A minus sign may appear during power up as the  
sensor stabilizes.) Turn off the instrument by sliding the POWER  
switch to OFF.  
4.2  
Adjusting the Instrument  
After being turned on and warmed up for at least 1 minute, the  
instrument should indicate 20.9% in fresh air. If the instrument needs  
to be zadjusted, proceed as follows:  
1. Ensure that the instrument is sampling fresh air that is free of any  
oxygen displacing gases.  
2. Using a 1/8" flat-blade screwdriver, turn the  
ADJUST potentiometer until the LCD shows  
20.9%. An instrument can be considered prop-  
erly adjusted with a display bounce of up to ±0.2%.  
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
 
4.4  
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 Oxor II with a minimum of effort. The instrument's  
front panel slide switches can then be actuated by your thumb for one-  
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  
Thebasicprobe, ortheoptionalrigidstainlesssteelprobewithhandle,  
connected to a flexible hose with sample filter can be used to draw a  
gas sample into the instrument from the room, grilles, diffusers,  
furnace flues, hot-water heater flues, and from inside furnaces heat  
exchangers.  
Both hose and probe are detachable from the instrument when sam-  
pling without the probe, or when sampling with a different probe is  
desired.  
Important: If condensation is observed within the hose, do not allow  
water level to build up to a point where it cuts off flow.  
4.6  
Interpreting the Display  
Gas Display  
The LCD directly shows O2 levels in the range from  
0 to 25%. The display on the right indicates a O2  
level of 20.9%.  
5
 
Low Battery Indications  
When the battery voltage becomes low, the “LO  
BAT” indicator appears. Although the instrument  
will continue to operate and give percent O2 read-  
ingsundertheseconditions, thebatteriesshouldbereplacedassoonas  
possible.  
When the battery voltage becomes too low for the  
instrument to operate, a “-1” is displayed on the  
LCD. No O2 readings are provided under these  
conditions.  
4.7  
Long-Term Storage  
When storing the Oxor II for extended periods of time, set its POWER  
switchtoOFFandremovethebatteries.Afterlongtermstoragefollow  
Section 4.2 (Adjusting the Instrument) to make sure that the unit is  
ready for use.  
5
MAINTENANCE  
The Oxor II needs to be calibrated at regular intervals to ascertain that  
it still meets its accuracy specification. A regular calibration schedule  
should be established. Detailed calibration, maintenance procedures  
and parts lists are provided in the Service Manual (19-9133).  
As a quick check of the instrument’s operation, perform a response  
check by exposing the instrument to a gas source which is depleted of  
Oxygen (e.g., cigarette smoke, a breath held for 15 seconds or more,  
smoke from a recently snuffed -out match, or bottled nitrogen). If the  
instrument doesn’t show a drop in the percentage of oxygen from that  
source, or if the reading is obviously in error, DO NOT use the  
instrument until it has been serviced by an authorized Bacharach  
Service Center.  
NOTE: DO NOT use this simple response check as a sub-  
stitute for ensuring the instrument is properly calibrated.  
6
 
6
PARTS/SERVICE  
Parts List  
6.1  
Item  
Part No.  
Battery Cover  
Basic Probe/Hose Assy.  
Optional Probe/hose Assy.  
19-3029  
19-3086  
19-3076  
6.2  
Bacharach Sales/Service Centers  
Un it ed St a t es  
Bacharach, Inc.  
621 Hunt Valley Circle  
New Kensington, PA 15068  
Phone: 724-334-5051  
Fax: 724-334-5723  
E-mail: help@bacharach-inc.com  
Ca n a d a  
Bacharach of Canada, Inc.  
250 Shields Court, Unit #3  
Markham, Ontario L3R 9W7 Canada  
Phone: 905-470-8985  
Fax: 905-470-8963  
E-mail: bachcan@idirect.com  
México  
Bacharach de México  
Playa Regatas No. 473 Tercer Piso  
Col. Militar Marte  
Delegación Iztacalco, 08830  
México D.F. México  
Phones: +52-555-634-7740  
+52-555-634-7741  
FAX:  
+52-555-634-7738  
E-Mail: bacharachservicio@bacharach.com.mx  
E u r op e  
Bacharach Instruments  
Sovereign House, Queensway  
Leamington Spa  
Warwickshire CV31 3J R  
United Kingdom  
Phone: +44-1926-338111  
Fax: +44-1926-338110  
Email: sales@bacharach-europe.com  
7
 
Notes:  
8
 

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