- Industrial & lab equipment
- Measuring, testing & control
- RKI Instruments
- OX-82
- Owner's manual
- 10 Pages
RKI Instruments OX-82 Owner Manual
RKI Instruments OX-82 is a portable oxygen detector that provides continuous monitoring of oxygen levels. It features an intrinsically safe design, making it suitable for use in hazardous environments. With its compact size and lightweight, the OX-82 is easy to carry and operate. The digital readout displays oxygen concentration in percent, and an alarm triggers when levels fall below a preset point. The OX-82 also has a low battery alarm and provides remote alarm and monitoring capabilities for added safety.
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Il LEUR - INSTRUMENTS Gas Detection for Life! RKI INSTRUMENTS, INC. INSTRUCTION MANUAL Model OX-82 The accompanying instrument is sold and serviced in the USA by RKI Instruments, Inc. Please contact RK Instrumentsfor any follow up service needs, including questions, warranty issues, repairs, and spare parts and sensors. Thank you for selecting this fine instrument for your use. With proper care and maintenance, it will provide you with many years of reliable service. RKI Instruments, Inc. e 33248 Central Avenue Union City, CA 94587 e Phone (510) 441-5656 e (800) 754-5165 e Fax (510) 441-5650 World Leader In Gas Detection & Sensor Technology www. rkiinstruments.com OX—82 . DETECTION PRICIPLE ! The oxygen detector is a plug-in cell assembly in a metal enclosure with pins to retain the defector in a bayonet-type socket at top of panel. The shell forms one electrical contact, and an insulated button at the bottom end marks the other contact. A perforated metal guard at top end allows the surround- ing atmosphere to diffuse in and reach the active part of the cell. Oxygen detection occurs in an electrochemical cell consisting of a gold and a lead electrode in a gel-Lype electrolyte, covered by a membrans. Oxygen in the atmosphere surrounding the detector diffuses Lhrough the membrane at a rate proportional to the partial pressure of oxygen. This oxygen enters into ah electrochemical reaction which produces a current directly proportional to the oxygen concentration and this current in turn develops voltage across a temperalure-compensating thermistor/resistor network. | The voltage is applied Lo the detector terminals, and thence to the instru- ment circuitry where it produces a reading in percenl oxygen, and triggers an alarm presel point. . FEATURES = In trinsically sage design * Minature size and lightweight (300 g) + Percenl oxygen digital readout * Low bátiery alarm H Alarm circuit and metal clip provided = Automatic self-illumination display in a dark place 1” Remote alarm capability + Remote monitoring capability 3. SPECIFICATIONS 1) Model 2) Detectlon principle 3) Sampling method 4) Range 5) Accuracy 6) Readout 7) Alarm 8) Response time 9) Operating temperature 10) Power supply 11) Battery life 12) Dimensions 13) Weight 14) Life expectancy of the sensor 15) Warranty 16) Applicable sensor 17) Explosion- proof OX—82 OX-82 + Electrochemical Diffusion sampling Bullt-in and/or remote sensor type 0 ~ 25% oxygen content + 0,3% by volume at constact temp, Digital display readable to nearest 0,1% oxygen (3-digit) , D Intermittent audible tone and flashing alarm light, activated when oxygen concent falls below alarm level (preset at 18%). @ Continuous audible tone for Tow battery alarm © External alarm buzzer receptacle Better than 20 sec, Lo 90% response at 20 © 5100 — +40€ Dry cells (Standard), 2 pes 100 hrs continuous operation minimum in case of no alarn/illumination, using dry cells, 78 (4) x 142(H) x 926(D) пп Approx. 300g (Inc. carrying case) Above 18 months | year material & workmanship Type 0S-B12 Intrinsically safe OXx-82 4. NAME OF EACH PART {FTA e "a e su +. = EE Ки al ue. + y E 5. = 5 IET a A a Ar A al + TLE : . : E 1 : " de ) Se NL L ь VP eGR Erie HERS TA DT ED ET SRLS - Pdo ra dir ma SUR Ee de rf dk nd Rl " 4 Г Aa A CERA Digital Oz display Oxygen sensor D @ opan adjuster Zero adjuster Power switch © © © ® External alarm receptacle 5. OPERATIONAL PROCEDURE Start Fa = Power switch "ON" Is battery voltage Power switch "OFF" hed OX-82 Replacement of battery * When it is Ni-Cd battery, above 15 hrs' rechage is needed, Oz reading be above 23% by turning spen adjuster When make 0; reading below 18%, check that alarm will be triggered, (Intermittent audible tone and LED flashing) E Adjust reading to 214 in fresh air ми This is ready to run No Replace sensor with new one, 1) Operational! procedure 2) Ox-82 + The following steps should be followed for normal routine operation. D While in a location having normal oxygen contenL, turn POWER switch to © ON. If the instrument gives continuous sudible tone even though the reading is above 18%, battery replacement is required, (When applying Ni-Cd rechargeable batteries, recharge Lhem Lhrough battery charger.) Turn SPAN adjuster clockwise using a fingertip to bring the reading above 23%, Then turn SPAN adjuster counterclockwise to bring the reading below 18% and check that the alarm Cintermittent audible tone and LED flashing) is triggered, Performances of oxygen sensor and alarm funclLion have been confirmed with this step. Set to 21.0 by turning SPAN adjustment using a fingertip, Turn clockwise (+) to increase reading. | Note : In a digital in the last place. Dn not be concerned aboul tie difference between 19.4 and 19.5 or. 20.9 and 21.0, Allow detector to recover, and note that reading returns Lo 21. Instrument is now adjusled and ready for a day's use an oxygen indicator or monitor, The 04-82 can be carried or worn during normal aclivilies, and will actuate alarm whenever oxygen content drops below 18.0%. Function of each part This instrument is provided with the each funclion in the following; D Cancel of audible Lone for oxygen dificiency The standard instrument gives intermittent audible tone automatically when oxygen content drops below 18%. If you do nol need this function, you can cancel it by means of change-over switch (SW2) located inside instrument. But low battery alarm has nothing to do with the position of change-over switch, OX-82 7 © Zero adjustment This adjustment has been done, by our factory before shipment. It is recommendable to perform this adjustment with oxygen-free gas if the Instrument is used to detect oxygen content in inert gas or to detect low oxygen content. But it is of no need to perform this adjustment with regard to the measurement of oxygen difficiency. To adjust, prepare calibration kit (gas sampling bag and adaptor/cap - optional accessories). Pack the oxygen-free gas, such as 99,9% Nitrogen into the gas sampling bag. Cover the sensor of the instrument with adaptor/cap. Connect it with the adaptor and let its N; gas inducted into the instrument, while instrument ls operating. Watch display and set it to read 0.0 by use of ZERO adjuster @ after reading gets stable (for about 1 minute). For adjustment, set it to read once and gradually turn it to (+) direction until - sign is disappeared. Now the reading would be and accurate zero adjustment is completed. Take off the adaptor and leave it in a fresh air. Note that reading returns to 21.0. If not, adjust to 21.0 by turning SPAN adjuster using fingertip. ® Self-illumination The instrument provides the sel f-illuminatlon circuit to read out oxygen content definitely in a dark place. The display board is illuminated automatically when It gets dark. It is put out automatically when it gets light. @ External alara buzzer An external buzzer is available as a optional accessory. The buzzer |5 fitted with a lapel clip so it.can be fastened to shirt collar or belt . where it can be heard easily even in a high-noise eavironment. To use, simply plug buzzer cable into EXT,ALARH socket ©), Both the internal and the external buzzers will sound simul taneously, The capacity of this buzzer is 90db/30ca. 0X-82 6. REMOTE MEASURCMENT BY USE OF EXTENSION CABLE Fy [f the extension cable is to be used, first unplug the sensor, 1) It is secured in a bayonet-type socket : press and turn counterclockwise Lo release, 2) Insert plug end of cable into same socket and install sensor in socket end of cable. In case Oo 3) Verify operation and adjustment of sensor = O as before, os 4) Insert the renote sensor into the place Lo be tesled and read out oxygen content in the normal way. 7, HOW TO USE THE CAL KIT FOR TIE PRESSURIZED AIR (Useable under the pressurized environment of below 2.0 kg/cm” ) This KIT is consists of ; a) Calibration adaptor .......... I pce b) Sampling bag (6 2) ........ .. 1 pee c) Neoprene hose (S0ca) ......... 1 pce d) Aspirator bulb ............... | pce In case of ‘extension cable When utilize the instrument under Lhe pressurized environment, prepare the calibration kit for the pressurized air which ig supplied as optional accessories. 1) Connect the end of aspirator bulb ta the inlet hose of sampling bag(6 £) as follows — >= Y + Sampling bag (6£) / E Aspirator bulb OX—82 9 2) After above connection, Introduce the ambient pressurized gas into the sampling bag(62) by squeezing the aspirator bulb, Air under Ges ln, pressurized est EE Ц condition Squeeze 3) Pack the fresh alr into the gas sanpling bag (optional accdessories) and close !t with its clip. 4) Carry the adaptor (optional accessories), foresaid gas sampling bag and the instrument into the pressurized environment. 5) Fix the adaptor to the sensor of instrument. Send air into the adaptor from the gas sampling bag. 6) Put power switch® to "ON" position and set the reading to 21.0 with SPAN - adjuster, observing the display board. 7) When the adaptor is taken off swiftly Just after having made the span adjustment, this Is ready Lo start operation. 8) When the pressure is changed, repeat Lhe above procedures, , REPLACEMENT OF OXYGEN SENSOR The oxygen sensor is a plug-in assembly which is easily replaced but is not field-repalrable. It should be replaced ; 1) When the reading is below 23.0 in normal air even if turning SPAN adjuster clockwise fully. 2) When the reading becomes eratic, or affected by position or movement of detector, When oxygen sensor needs replacement, a new sensor should be installed. The old one should be sent to RIKEN's authorized dealer for reactivation, which is done at a flat rate. Oxygen sensor is guaranteed to operated satisfactorily for a period of one year from date dated of purchase, If it fails within that time, it will be reactivated at no charge. 9. 10. REPLACEMENT OF BATTERTY # When the capacity of battery is dropped and the batlery is replaced with new one, prepare 2 pcs of small size(AA or RB) dry cells, Note : The replacement of battery should be made surcly al the safely area. Replacement of battery CAUTION IN OPERATION This instrument is deeply concerned with the life of one's life, operate the instrument with the following notes taken carefully; 1) Be careful to keep the ;instrument from any water, 2) When operate ib in ship, pul il an Lhe oplional wealher-prool rubber cover. 3) Do nol drop nor throw it, 4) When not in use for a long Lime, it should be stored after removing battery (2 pcs of dry cells) from it. . ACCESSORIES + Standard accessoles 1) Dry cells (R6 or AA size) ........e se ea. 2 pcs 2) Instruction manual ........eceecoroeoreóos 1 COPY 3) Carrying case (with hand strap) ......... | pce A) ес ТРОН ins oh mi ast Rakesh A | sheet r*Uptional accessories 1) Hi-Cd battery and charger (Please specify voltage) 2) External alarm buzzer (with clip) 3) Extension cable (5m, 10m, 20m or 30m) 4) Calibration kit for pressurized air (Gas sampling bag and adaptor) 5) Carrying bag 6) Weather-proof rubber cover(for marine use) 7) (-) Small screwdriver
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Key Features
- Intrinsically safe design for use in hazardous environments
- Compact size and lightweight for easy portability
- Digital readout displays oxygen concentration in percent
- Alarm triggers when oxygen levels fall below a preset point
- Low battery alarm for timely battery replacement
- Remote alarm and monitoring capabilities for enhanced safety