Riken Keiki OX-07 User manual
PT0E-0867
Portable Oxygen Monitor
OX-07
（TYPE A）
Operating Manual
Safety information
The Portable Oxygen Monitor Model OX-07 is a monitor designed to provide continuous
exposure monitoring of Oxygen(O2) in hazardous environments.
Specification for safety
・Ex ia ⅡC T4 Ga
・Ambient temperature range for use ：-20℃to +50℃
Electrical data
・Powered by two AAsizeAlkaline batteries,
model LR-6 by Toshiba.
Certificate numbers
・IECEx Certificate 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.
INST. No. ○○○○○○○○○○○
A B C D E
A: Manufacturing year (0-9)
B: Manufacturing month (1-9,XYZ for Oct.-Dec.)
C: Manufacturing lot
D: Serial number
E: Code of factory
・ Ⅱ 1 G Ex ia ⅡC T4 Ga
1
ＩＮＴＲＯＤＵＣＴＩＯＮ
Using an advanced microprocessor controlled detection system, the OX-07 Oxygen
Monitor detects the Oxygen (O2) content to prevent the accident caused by oxygen
deficiency.
This manual is a guide to operation of the OX-07. Reading of this manual is requested
not only for first user but also for experienced staff.
This manual contains the following headings to ensure safe and effective operation.
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 result in minor or moderate injury or some damage to the
human body or objects. It may also be used to alert against unsafe
practices.
This means “ADVICE” regarding operation.
DANGER
WARNING
CAUTION
* NOTE
2
Cautions for the safety
Cautions relating to explosion proof
CAUTION
・ Do not push sensor and buzzer window with pointed article.
This may cause defect or damage and correct detection cannot be performed.
・ Do not pour water on this monitor or immerse in water.
・ Do not give high impact or shock, since this is precision instrument.
・ Operating temperature range of this monitor is -20 to +50degreeC. The reading
may be affected by the sudden change of temperature if the monitor is used
under such conditions.
・ Remove the battery if the monitor is not used for a long period.
WARNING
・ Do not remodel or alter circuit/structures.
・ Replace batteries in non-hazardous area.
・ When using this gas monitor in a hazardous area, take the following
countermeasures for preventing dangers resulting from electrostatic charges.
① Wear anti-static clothes and conductive shoes (anti-static work shoes).
② For indoor 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, correct detection cannot
be performed.
・ Do not modify or change the circuit or structure, etc.
・ Do not disassemble the sensor since there is an electrolyte inside. If your
finger touches the electrolyte, wash your finger with water immediately.
・ If the button is pushed randomly, each setting may be changed and alarm may
not be activated correctly. Do not operate the button other than as per
instructions.
・ Do not drop this monitor into fire.
・ Do not remodel or alter circuit, structures etc.
・ Do not use or store the unit in high temperature, high humidity or high
pressurized condition exceeding the operating conditions specified in the
specifications. Correct measurement may not be performed.
3
Table of contents
1. DESIGNATION …………………………………………………………………… 4
2. PREPARATION
2-1. Mounting/Replacing the batteries…………………………………………… 6
2-2. Mounting/Replacing the sensor ……………………………………………… 7
2-3. Power ON/OFF …………………………………………………………… 8
3. OPERATION
3-1. Start up procedure …………………………………………………………… 9
3-2. Performing a fresh air adjustment …………………………………………… 9
3-3. Changing the display in measuring mode …………………………………… 10
3-4. Wearing the unit ……………………………………………………………… 12
4. 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 accessories ……………………………………………………… 19
8-3. Optional accessories ……………………………………………………… 20
9. DEFINITION OF TERMS ………………………………………………………… 21
10. DETECTION PRINCIPLE ………………………………………………………… 22
4
4. Alarm light
3. Target gas window
2. AIR button
1. LCD display
6. DISP button
5. POWER button
7. Buzzer
8. Threaded holes
9. Batter
y
cover
10. Sensor
1.DESIGNATION
[Front view]
1. LCD display : Indicates gas detection results and various information.
2. Air button : Adjusts readings when a fresh air adjustment is performed.
Changes a parameter setting when a parameter is available for
adjustment in display 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] [Bottom view]
8. Threaded holes : These are used to mount the alligator clip or the optional belt
clip (Option).
9. Battery cover : The cover for battery compartment.
10. Sensor : Oxygen sensor is mounted here.
5
11. Target gas
14. Unit 12. Battery icon
13. Gas concentration
& status indication
%
[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.
6
2. PREPARATION
2-1. Mounting/Replacing the batteries
1) Verify that the unit is off.
2) Rotate the fastener in the battery cover a quarter turn counterclock wise and lift up
the end of the battery cover to remove it. A coin may be used to rotate 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
WARNING
Battery cover
AA size alkaline batteries
＋
－
－
＋
7
2-2. Mounting/Replacing the sensor
When replacing the sensor, take care for the following points.
・ After replacement of the sensor, be sure to perform the sensor calibration. If not, the
reading may be deviated.
・ If the unit is not used for a long period, be sure to perform the sensor calibration
before use.
・ Replace the sensor if you can no longer perform AIR calibration or when the reading
is unstable.
・ Sensor replacement shall be done at power off condition.
[Replacing the sensor]
1) Verify that the unit is off.
2) Turn the rubber guard on the sensor retainer counterclockwise 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 mounting.
6) Align the yellow line on the sensor retainer’s rubber guard with the “UNLOCK” line on
the case, insert it deeply and turn the rubber guard to the “LOCK” line.
CAUTION
Sensor
Gas contacting side
Yellow line on
the rubber guard
UNLOCK
Sensor
Rubber
guard
LOCK
Concave part of the
sensor connector
Convex part for sensor
mounting
[
Bottom view
]
[Upper view of the sensor]
8
2-3. Power ON/OFF
Press and briefly hold the POWER button for about one second to turn on the OX-07.
In any mode, the power is turned off 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
Table of contents
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