Riken Keiki OX-07 Operating Manual Download Page 23

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9. DEFINITION OF TERMS

vol%

Gas concentration represented by the unit as a percentage of the total volume.

Calibration

By using calibration gas, adjust the displayed gas concentration to match the calibration
gas concentration.

PEAK

This is a peak (highest or lowest) gas reading since the last time the unit was turned on.

Warning/Alarm level set point

Preset level to actuate an alarm when gas concentration reaches that point.

Maintenance and check

Work and inspection to maintain the performance of this unit.

Summary of Contents for OX-07

Page 1: ...PT0E 0867 Portable Oxygen Monitor OX 07 TYPE A Operating Manual ...

Page 2: ...ificate number IECExKEM08 0022 ATEX Certificate number KEMA08ATEX0126 List of standards IEC 60079 0 2011 EN60079 0 2012 IEC 60079 11 2011 EN60079 11 2012 IEC 60079 26 2006 EN60079 26 2007 WARNING Do not replace batteries in hazardous location Do not replace O2 sensor in hazardous location Do not replace Extension Cable in hazardous location Do not attempt to disassemble or alter the instrument INS...

Page 3: ...peration Indicates an imminently hazardous situation which if not avoided will result in death or serious injury or serious damage to the product This signal word is to be limited to the most extreme situation Indicates a potentially hazardous situation which if not avoided could result serious injury to the human body or object Indicates a potentially hazardous situation which if not avoided may ...

Page 4: ...r use use the gas monitor while standing on a conductive work floor with a leakage resistance of 10 MΩ or less Do not use this monitor except for the measurement of air and for oxygen content measurement of gas mixtures WARNING Perform gas calibration at proper interval Do not use unspecified batteries Check battery capacity before operation Ensure that sensor is exposed to ambient air If not corr...

Page 5: ... ALARMS 4 1 Types and patterns of gas alarm 13 4 2 Resetting gas alarms 14 4 3 Responding to gas alarms 14 4 4 Other alarms 15 4 5 Responding to dead battery alarm 15 5 MAINTENANCE AND CHECK 5 1 Daily check 16 5 2 Air calibration Fresh air adjustment 16 5 3 Replacing batteries 16 5 4 Gas calibration 16 6 SCRAP THE PRODUCT 16 7 TROUBLE SHOOTING 17 8 SPECIFICATIONS 8 1 Specifications 18 8 2 Standard...

Page 6: ...splay mode or setup mode 3 Target gas window Window to see the target gas described by the sensor 4 Alarm light Flashes when the unit reaches warning conditions 5 POWER button Turns the unit on and off Determines a parameter in setup mode 6 DISP button Enters setup mode Changes a parameter setting in setup mode 7 Buzzer Sounds for gas alarms unit malfunctions and dead battery alarm Rear view Botto...

Page 7: ...on LCD display Measuring mode 11 Target gas Displays the name of target gas 12 Battery icon Shows remaining battery life 13 Gas concentration The target gas concentration and the status of this unit is status indication displayed 14 Unit Indicates the unit of gas concentration ...

Page 8: ...the fastener 3 Carefully install the new AA alkaline batteries Follow the battery diaphragm inside the battery compartment 4 Reinstall the battery cover Opening the battery cover Direction of battery mounting Closing the battery cover Do not remove the battery with power on Battery replacement shall be done at power off condition Take care not to mistake direction of battery polarity CAUTION WARNI...

Page 9: ...wise until yellow line on the rubber guard will indicate the proper amount of rotation by lining up with a yellow line on the instrument body that indicates UNLOCK 3 Pull the sensor retainer away from the instrument body 4 Pull the old sensor out from the sensor retainer 5 Replace the sensor with new one In this case match up the concave part of sensor connector with the convex part of sensor moun...

Page 10: ...f by pressing and holding the POWER button for about 3 seconds Press and hold the POWER button until you hear a beep NOTE Be sure to perform a fresh AIR adjustment before using the OX 07 See section 3 2 DANGER POWER button Press and hold the POWER button until the LCD turns off Beep Beep Beep 3 times in about 3 seconds NOTE About 3 sec ...

Page 11: ...ng you to hold the AIR button 3 After a moment the LCD indicates Adj Continue to hold the AIR button 4 Release the AIR button when the LCD displays RELEASE in the upper left corner 5 About 2 seconds later the LCD indicates FINISH in the upper left corner and returns to measuring mode showing that the fresh air adjustment has been completed automatically The operating temperature range of this unit...

Page 12: ...ter AIR CAL Air adjustment is cancelled the LCD displays FINISH and indicates the concentration before the adjustment NOTE Perform air adjustment in the fresh air atmosphere under the similar pressure temperature and humidity conditions to the operating environment If the air adjustment is done at detection place where oxygen deficiency may occur the correct gas detection cannot be performed and o...

Page 13: ... Displaying the alarm level set point Displaying the peak highest gas reading Displaying the warning level set point Displaying the peak lowest gas reading Displaying the warning level set point Displaying the peak highest gas reading If you do not press a button for about 20 seconds while in display mode the unit will return to measuring mode automatically and the backlight will turn off 20 secon...

Page 14: ...eth in the alligator clip s jaws opened Mounting the belt clip Screw down the belt clip on the back of the case 2 points About minus sign If the gas reading in measuring mode falls more than 2 of full scale below zero the LCD displays minus sign in front of the single figures of LCD NOTE Displays minus sign WARNING Ensure that sensor is exposed to ambient air If not correct detection cannot be per...

Page 15: ...OVER 40 0vol Pattern B 1 for Overseas specification Gas alarm types Low alarm WARNING High alarm ALARM Over range alarm OVER Alarm patterns Pattern A pattern B Alarm actions Buzzer light vibration LCD flashing back light on Alarm types Target gas Alarm pattern O2 Low alarm WARNING 19 5vol Pattern A High alarm ALARM 23 5vol Pattern B Over range alarm OVER 40 0vol Pattern B 1 1 Actions of buzzer lig...

Page 16: ... ventilate there Also stop the leaking source immediately if the gas leak is identified If alarm is issued the LCD changes to alarm indication automatically NOTE WARNING Gas reading flashes ALARM Gas reading flashes OVER Gas reading replaced by blinking brackets The alarm pattern of this unit is a latched mode Even though the gas concentration may have returned to normal or may have increased abov...

Page 17: ...ure would be activated except for system failure low battery alarm or at the time of AIR cal Only power off operation can be performed When sensor failure or system failure has been occurred turn off the power and contact our authorized agent NOTE Buzzer sounds Alarm light flashes Battery icon flashes Gas reading replaced by BATTERY FAIL Back light turns on NOTE The standard of the bar in battery ...

Page 18: ...ection 3 2 5 3 Replacing batteries Replace the battery if battery voltage decreases during operation See section 2 1 5 4 Gas calibration It is required to perform gas calibration at minimum every 6 months To calibrate the unit you will need the calibration kit Ask our authorized agent for gas calibration kit 6 SCRAP THE PRODUCT As a harmful substances or materials for environment are not used in t...

Page 19: ...y that the battery cover is attached CIRCUIT FAIL is displayed on the LCD A circuit failure has occurred Contact our nearest agent to repair SENSOR FAIL is displayed on the LCD The O2 sensor may need replacement Replace the sensor with new one AIR CAL FAIL displays during fresh air adjustment Fresh air is not supplied to the unit Supply fresh air The O2 sensor may need replacement Replace the sens...

Page 20: ...elf diagnosis System failure Sensor failure Low battery Calibration error Trouble alarm indication Flashing light Intermittent buzzer Content display Trouble alarm action Latching mode Detection method Diffusion method Gas concentration display LCD digital display Power supply Alkaline batteries Size AA 2 pcs Continuous operation time About 5000 hours no alarm no light at 25 Explosion proof struct...

Page 21: ...splay Trouble alarm action Latching mode Detection method Diffusion method Gas concentration display LCD digital display Power supply Alkaline batteries Size AA 2 pcs Continuous operation time About 5000 hours no alarm no light at 25 Explosion proof structure Intrinsically safe Explosion proof grade Ⅱ1GExiaⅡCT4Ga ATEX IECEx KEMA Operating temperature and humidity 20 50 below 95 RH non condensing O...

Page 22: ... the OX 07 with extension cable do not throw sensor part into detection point but lower down slowly Avoid impact to the sensor Sensor may be damaged When intending to measure the oxygen content in manhole inside device etc by OX 07 with extension cable adjust the temperature of the sensor to be the same temperature as measuring point by leaving it there about 10 minutes Then pull it up to the grou...

Page 23: ...he displayed gas concentration to match the calibration gas concentration PEAK This is a peak highest or lowest gas reading since the last time the unit was turned on Warning Alarm level set point Preset level to actuate an alarm when gas concentration reaches that point Maintenance and check Work and inspection to maintain the performance of this unit ...

Page 24: ... occur respectively as shown in the following chemical equation Cathode noble metal O2 H2O 4e 4OH Anode lead 2Pb 2Pb2 4e The oxygen reacts in the cell as above equation and produce a current proportional to the oxygen concentration The current develops a voltage across a thermistor resistor network If oxygen concentration decreases reduction on noble metal electrode decreases and voltage on both s...

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