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Related Manuals for Riken Keiki OX-07
Summary of Contents for Riken Keiki OX-07
- Page 1 PT0E-0867 Portable Oxygen Monitor OX-07 （TYPE A） Operating Manual...
- Page 2 Safety information The Portable Oxygen Monitor Model OX-07 is a monitor designed to provide continuous exposure monitoring of Oxygen(O ) in hazardous environments. Specification for safety ・Ex ia ⅡC T4 Ga ・ Ⅱ 1 G Ex ia ⅡC T4 ・Ambient temperature range for use ： -20℃ to +50℃...
- Page 3 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.
- Page 4 Cautions for the safety 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. ・...
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Page 5: Table Of Contents
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. -
Page 6: Designation
1.DESIGNATION [Front view] 4. Alarm light 1. LCD display 5. POWER button 2. AIR button 6. DISP button 7. Buzzer 3. Target gas window 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. - Page 7 [LCD display] - Measuring mode – 13. Gas concentration 11. Target gas & status indication 12. Battery icon 14. Unit 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 &...
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Page 8: Preparation
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. -
Page 9: Mounting/Replacing The Sensor
2-2. Mounting/Replacing the sensor When replacing the sensor, take care for the following points. CAUTION ・ 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. -
Page 10: Power On/Off
2-3. Power ON/OFF Press and briefly hold the POWER button for about one second to turn on the OX-07. * NOTE POWER Press and hold the POWER button until you hear a beep. button DANGER Be sure to perform a fresh AIR adjustment before using the OX-07. -
Page 11: Operation
3. OPERATION 3-1. Start-up procedure When the OX-07 is turned on, it enters measuring mode automatically. The concentration of the target gas is displayed on the LCD. <<Start-up Procedure>>(About 15 seconds) ％ ％ ％ ％ Displaying the Power on Displaying the... -
Page 12: Changing The Display In Measuring Mode
* NOTE ・ Fresh air adjustment can be performed even in gas alarm condition. ・ When AIR adjustment error is issued, the LCD displays “AIR CAL FAIL”. Release the air cal failure alarm according to the following steps. 1) Press and hold “AIR” button for about 3 seconds. 2) Release the “AIR”... - Page 13 * NOTE ・ Gas concentration display Indicates current gas concentration. ・ Displaying the peak (highest) reading Indicates the highest gas reading since the unit was turned on. ・ Displaying the peak (lowest) reading Indicates the lowest gas reading since the unit was turned on. You can also change the display mode by pressing the “AIR”...
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Page 14: Wearing The Unit
* NOTE 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. Displays minus sign 3-4. -
Page 15: Alarms
4. ALARMS 4-1. Types and patterns of gas alarm The OX-07 will sound an alarm, flash its alarm lights and vibrate when the oxygen concentration reaches to warning/alarm level. 【for Japanese specification】 Gas alarm types : Low alarm (WARNING), Low-Low alarm (ALARM), Over range alarm (OVER) Alarm patterns : Pattern “A”, pattern “B”... -
Page 16: Resetting Gas Alarms
[Examples of LCD indication] ％ ％ ％ OVER WARNING ALARM (Gas reading replaced by (Gas reading flashes) (Gas reading flashes) blinking brackets) * NOTE If alarm is issued, the LCD changes to alarm indication automatically. 4-2. Resetting gas alarms To reset a gas alarm or trouble alarm, press and release the “POWER” button. Alarms to be able to reset ・... -
Page 17: Other Alarms
4-4. Other alarms System failure Sensor failure Buzzer sounds Buzzer sounds Alarm light flashes Alarm light flashes Gas reading replaced by SENSOR FAIL Gas reading replaced by CIRCUIT FAIL Back light turns on Back light turns on * NOTE ・ Sensor failure may be activated at the time of AIR cal. To reset an alarm, press “POWER”... -
Page 18: Maintenance And Check
As a harmful substances or materials for environment are not used in this unit itself, treat it as industrial waste (Non-flammable material) according to the local rule. Regarding the oxygen sensor, contact our nearest agent or RIKEN KEIKI CO., LTD. -
Page 19: Troubleshooting
7. TROUBLESHOOTING Symptoms Probable causes Recommended action Batteries may need to be Refer to section. The unit will not replaced. <2-1 Mounting /replacing the turn on batteries> Battery polarity may be wrong. Holding time for POWER Press hold POWER button may be too short. button for about 1 sec until it shows display. -
Page 20: Specifications
8. SPECIFICATIONS 8-1. Specifications 【Japanese specifications】 Model OX-07 Type TYPE A Detectable gas Oxygen Detection principle Galvanic cell Measuring range 0～40vol% (Resolution : 0.1vol%) Low alarm 18.0vol% Low-Low alarm 18.0vol% Over alarm 40.0vol% Various indications Battery icon Indicate accuracy Within ±0.7vol%... -
Page 21: Standard Accessories
【Overseas specifications】 Model OX-07 Type TYPE A Detectable gas Oxygen Detection principle Galvanic cell Measuring range 0～40vol% (Resolution : 0.1vol%) Low alarm 19.5vol% High alarm 23.5vol% Over alarm 40.0vol% Various indications Battery icon Indicate accuracy Within ±0.7vol% (under an identical condition) -
Page 22: Optional Accessories
Yellow line CAUTION ・ When using 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. -
Page 23: Definition Of Terms
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. -
Page 24: Detection Principle
10. DETECTION PRINCIPLE By connecting a noble metal and lead immersed in an electrolyte with a lead wire, an electrochemical cell (galvanic cell) is made. A membrane covers the cell and allows oxygen to diffuse into the electrolyte where reduction on the metal electrode and oxidation on the lead electrode occur respectively as shown in the following chemical equation ;...
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