PT0E-1050 Portable Toxic Gas Monitor SC-8000 Operating Manual (PT0-105) Request for the Customers • • • • • Read and understand this operating manual before using the gas monitor. Use the gas monitor in accordance with the operating manual. Regardless of warranty period, we shall not make any indemnification for accidents and damage caused by using this product. The indemnification shall be made only under the warranty policy of products or parts replacement. Because this is a safety unit, a regular maintenance for every six months and daily maintenance must be performed. If any abnormality was found in the gas monitor, notify them to RIKEN KEIKI immediately. <Contents> 1 1-1. 1-2. 1-3. Outline of the Product .............................................................................................. 2 Preface .................................................................................................................... 2 Purpose of use ........................................................................................................ 2 Definition of DANGER, WARNING, CAUTION, and NOTE ..................................... 2 2 2-1. 2-2. 2-3. 2-4. Important Notices on Safety .................................................................................... 3 Danger cases .......................................................................................................... 3 Warning cases ......................................................................................................... 5 Precautions ............................................................................................................. 6 Safety information ................................................................................................... 7 3 3-1. 3-2. Product Components ............................................................................................... 8 Main unit and standard accessories ........................................................................ 8 Names and functions for each part .......................................................................... 10 4 4-1. 4-2. 4-3. 4-4. 4-5. 4-6. 4-7. 4-8. 4-9. How to Use .............................................................................................................. 13 Before using the gas monitor................................................................................... 13 Preparation for start-up ............................................................................................ 13 Basic operating procedures ..................................................................................... 18 How to start the gas monitor .................................................................................... 19 How to detect .......................................................................................................... 21 Modes...................................................................................................................... 24 Air calibration mode ................................................................................................. 25 Display/setting mode ............................................................................................... 27 How to exit............................................................................................................... 32 5 5-1. 5-2. 5-3. Operations and Functions ....................................................................................... 33 Gas alarm activation ................................................................................................ 33 Fault alarm activation .............................................................................................. 35 Other functions ........................................................................................................ 35 6 6-1. 6-2. 6-3. 6-4. Maintenance ............................................................................................................ 36 Maintenance intervals and items ............................................................................. 36 Gas calibration method............................................................................................ 37 How to clean............................................................................................................ 38 Parts replacement ................................................................................................... 39 7 7-1. 7-2. 7-3. Storage and Disposal .............................................................................................. 41 Procedures to store the gas monitor or leave it for a long time ............................... 41 Procedures to use the gas monitor again ................................................................ 42 Disposal of products ................................................................................................ 42 8 Troubleshooting ....................................................................................................... 43 9 9-1. 9-2. Product Specifications ............................................................................................. 45 List of specifications ................................................................................................ 45 ist of accessories ..................................................................................................... 47 10 Definition of Terms ................................................................................................... 48 -1- SC-8000 1 Outline of the Product 1-1. Preface 1 Outline of the Product 1-1. Preface Thank you for choosing our portable toxic gas monitor SC-8000. Please check that the model number of the product you purchased is included in the specifications on this manual. This manual explains how to use the gas monitor and its specifications. It contains information required for using the gas monitor properly. Not only the first-time users but also the users who have already used the product must read and understand the operating manual to enhance the knowledge and experience before using the gas monitor. 1-2. Purpose of use This product is a gas monitor used to detect various toxic gases (CO, HCI, etc.) in the air with a selected sensor. Detection results are not intended to guarantee life or safety in any way. In addition to this operating manual, an operating manual for the data logger management program (option) is available for the gas monitor. Contact RIKEN KEIKI if it is needed. 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE DANGER This message indicates that improper handling may cause serious damage on life, health or assets. WARNING This message indicates that improper handling may cause serious damage on health or assets. CAUTION This message indicates that improper handling may cause minor damage on health or assets. NOTE SC-8000 This message indicates advice on handling. -2- 2 Important Notices on Safety 2-1. Danger cases 2 Important Notices on Safety 2-1. Danger cases DANGER About explosion-proof • Do not modify or change the circuit or structure, etc. • When using the 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). • IP Protection grade : IP20 The protection grade on explosion-proof official approval is IP20. IP protection grade at the time of product shipment is 67. About explosion-proof of the main unit • The battery units that can be connected are the BUL-8000(S) (certificate number TC20087) or BUD-8000(S) (certificate number TC20088). If battery units other than specification are used, it will deviate from the regulation of explosion-proof official approval. • The specifications of the gas monitor are as follows: Pump circuit: Allowable voltage of 4.95 V, allowable current of 1.12 A, and allowable power of 1138 mW Toxic gas sensor circuit: Allowable voltage of 4.95 V, allowable current of 0.834 A, and allowable power of 853 mW Buzzer circuit: Allowable voltage of 4.95 V, allowable current of 0.431 A, and allowable power of 441 mW Main circuit: Allowable voltage of 4.95 V, allowable current of 0.715A, and allowable power of 732 mW Backup circuit: 3.0 VDC, 10 µA About explosion-proof of the battery unit • Replace the battery unit in a non-hazardous area. • The main unit that can be connected is SC-8000 (certificate number TC20086) only. The use with unspecified main units deviates from the regulation of explosion-proof certification. • The specifications of the BUD-8000(S) are as follows: Pump circuit: Maximum voltage of 4.95 V, maximum current of 1.12 A, and maximum power of 1138 mW Toxic gas sensor circuit: Maximum voltage of 4.95 V, maximum current of 0.834 A, and maximum power of 853 mW Buzzer circuit: Maximum voltage of 4.95 V, maximum current of 0.431 A, and maximum power of 441 mW -3- SC-8000 2 Important Notices on Safety 2-1. Danger cases DANGER Main circuit: Maximum voltage of 4.95 V, maximum current of 0.715 A, and maximum power of 732 mW Power supply: 4.5 VDC, 100 mA (LR6 3 pcs) • The specifications of the BUL-8000(S) are as follows: Pump circuit: Maximum voltage of 4.25 V, maximum current of 1.12 A, and maximum power of 901 mW Toxic gas sensor circuit: Maximum voltage of 4.25 V, maximum current of 0.768 A, and maximum power of 618 mW Buzzer circuit: Maximum voltage of 4.25 V, maximum current of 0.410 A, and maximum power of 330 mW Main circuit: Maximum voltage of 4.25 V, maximum current of 0.652 A, and maximum power of 525 mW Charge terminal: Allowable voltage AC250V • Make sure that the product model on the nameplate is correct. Inappropriate combinations of models deviate from the range of explosion-proof certification. The nameplate shows the followings as well as the product model. Product model: Main unit: SC-8000 Dry battery unit: BUD-8000 (S) Nameplate Lithium ion battery unit: BUL-8000(S) location Manufacturer: RIKEN KEIKI Co., Ltd. Explosion-proof class: Ex ia IIC T4 Ambient temperature: -20 to 50ºC (The ambient temperature on explosion-proof certification is -20 to 50ºC, and it indicates the temperature range which can maintain the explosion-proof performance and not the product performance.) • Please do not perform the desorption of a battery unit, and the desorption of the dry cell of a dry battery unit in a hazardous locations. • Please use alkaline AA batteries of designation to the dry battery unit (Type LR6 manufactured by Toshiba). About use • Toxic or other gases may blow out from the gas exhausting outlet. Never inhale the air or gases. SC-8000 -4- 2 Important Notices on Safety 2-2. Warning cases 2-2. Warning cases WARNING Sampling point pressure The gas monitor is designed to draw gases around it under the atmospheric pressure. If excessive pressure is applied to the gas inlet and outlet (GAS IN, GAS OUT) of the gas monitor, detected gases may be leaked from its inside, thus leading to dangers. Be sure that excessive pressure is not applied to the gas monitor while used. • Do not connect the gas sampling hose directly to a location with a pressure higher than the atmospheric pressure. The internal piping system may be damaged. • Handling of sensor Do not disassemble the electrochemical type sensor because it contains electrolyte. Electrolyte may cause severe skin burns if it contacts skin, while it may cause blindness if it contacts eyes. If electrolyte is adhered on your clothes, that part on your clothes is discolored or its material is decomposed. If contact occurs, rinse the area immediately with a large quantity of water. Fresh air adjustment in atmosphere When the fresh air adjustment is performed in the atmosphere, check the atmosphere for freshness before beginning the adjustment. If other gases exist, the adjustment cannot be performed properly, thus leading to dangers when the gas leaks. Response to gas alarm Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based on your judgment. Battery level check Before use, check that there remains sufficient battery power. When the gas monitor is used for the first time or is not used for a long period, the batteries may be exhausted. Either fully charge the batteries or replace them with new ones before use. • If a low battery voltage alarm occurs, gas detection cannot be conducted. If the alarm occurs during use, turn off the power and promptly charge the batteries in a non-hazardous area. • • • • • Others Do not throw the gas monitor into fire. Do not wash the gas monitor in a washing machine or ultrasonic cleaner. Do not block the buzzer sound opening. No alarm sound can be heard. Do not remove the battery unit while the power is ON. -5- SC-8000 2 Important Notices on Safety 2-3. Precautions 2-3. Precautions CAUTION Do not use the gas monitor where it is exposed to oil, chemicals, etc. Do not submerge the gas monitor under water on purpose. • Do not use in a place where the gas monitor is exposed to liquids such as oil and chemicals. • The gas monitor, being compliant to IP67, is not water-pressure-resistant. Do not use the gas monitor where a high water pressure is applied to it (under a faucet, shower, etc.) or submerge it under water for a long time. The gas monitor is water-proof only in fresh water and running water, and not in hot water, salt water, detergent, chemicals, human sweat, etc. • The gas inlet and outlet are not water-proof. Be careful not to let water such as rainwater get into these parts. Because this may cause trouble and gas cannot be detected. • Do not place the gas monitor where water or dirt gets accumulated. The gas monitor placed at such a location may malfunction due to water or dirt that gets into the buzzer opening, gas inlet, etc. • Note that drawing in dirty water, dust, metallic powder, etc. will significantly deteriorate the sensor sensitivities. Be careful when the gas monitor is used in an environment where these elements exist. Do not use the gas monitor in a place where the temperature drops below -10ºC or rises over 40ºC. • The operating temperature of the gas monitor is -10 to 40ºC. Do not use the gas monitor at higher temperatures, humidities, and pressures or at lower temperatures than the operating range. • Avoid long-term use of the gas monitor in a place where it is exposed to direct sunlight. • Do not store the gas monitor in a sun-heated car. Observe the operating restrictions to prevent condensation inside the gas monitor or sampling probe. Condensation formed inside the gas monitor or sampling probe causes clogging or gas adsorption, which may disturb accurate gas detection. Thus, condensation must be avoided. In addition to the operating environment, carefully monitor the temperature/humidity of the sampling point to prevent condensation inside the gas monitor or sampling probe. Please observe the operating restrictions. Do not use a transceiver near the gas monitor. Radio wave from a transceiver near the gas monitor may disturb readings. If a transceiver is used, it must be used in a place where it disturbs nothing. • Do not use the gas monitor near a device that emits strong electromagnetic waves (high-frequency or high-voltage devices). • Verify that the pump driving indicator is rotating before using the gas monitor. If the pump driving indicator is not rotating, gas detection cannot be performed properly. Check whether the flow rate is lost. Do not forget to perform a regular maintenance. Since this is a safety unit, a regular maintenance must be performed to ensure safety. Continuing to use the gas monitor without performing a maintenance will compromise the sensitivity of the sensor, thus resulting in inaccurate gas detection. Direct the LCD display upward. Use the gas monitor with the LCD display facing upward. The gas monitor, when used with the LCD display in a tilted or flat status, may not display correct values. Likewise, store the gas monitor with the LCD display facing upward. Others Pressing buttons unnecessarily may change the settings, preventing alarms from activating correctly. Operate the gas monitor using only the procedures described in this operating manual. • Do not drop or give shock to the gas monitor. The water-proof and explosion-proof properties and accuracy may be deteriorated. • Do not use the gas monitor while charging it. • SC-8000 -6- 2 Important Notices on Safety 2-4. Safety information 2-4. Safety information Observe the followings to maintain an explosion-proof system. <Overseas Specifications> Safety information The Portable Toxic Gas Monitor Model SC-8000 is a gas monitor designed to provide continuous exposure monitoring of toxic gas in hazardous environments. The gas sample is sucked in by build-in micro pump. The battery can be selected either Li-ion battery or alkaline dry battery. Li-ion battery unit is called BUL-8000 and alkaline dry battery unit is called BUD-8000. The battery unit can be changed even by the end users. Specification for safety ・Ex ia IIC T4 Ga ・ II 1G Ex ia IIC T4 Ga ・Ambient temperature range for use ： -20°C to +50°C ・Ambient temperature range during battery charging ： 0°C to +40°C Electrical data ・Power supply of Li-ion battery unit : BUL-8000 Two parallel connected Li-ion cells used in battery pack BP-8000 are from type Maxell INR18650PB1. Um=250V. ・Power supply of alkaline battery unit : BUD-8000 Powered by three series AA size alkaline batteries , model LR6 by TOSHIBA. ・Backup battery type CR1220 manufactured by Maxell. Certificate numbers ・IECEx Certificate number ：IECExDEK 11.0019 ・ATEX Certificate number ：DEKRA 11ATEX0047 List of standards ・IEC 60079-0：2007 ・IEC 60079-11：2006 ・IEC 60079-26：2006 ・EN60079-0:2009 ・EN60079-11:2007 ・EN60079-26:2007 WARNING ・Do not charge in hazardous location. ・Do not charge it expect by genuine charger. ・Do not replace battery unit in hazardous location. ・Do not replace dry batteries in hazardous location. ・Do not attempt to disassemble or alter the instrument. ・Use only battery unit type BUD-8000 with three series connected Alkaline AA batteries, type LR6 manufactured by Toshiba, or use chargeable battery unit type BUL-8000. INST. No. 0 0 0 0 0 0 0 0 0 0 0 AB 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 2-7-6 Azusawa, Itabashi-ku, Tokyo, 174-8744, Japan Phone : +81-3-3966-1113 Fax : +81-3-3558-9110 E-mail : [email protected] Web site : http://www.rikenkeiki.co.jp -7- SC-8000 3 Product Components 3-1. Main unit and standard accessories 3 Product Components 3-1. Main unit and standard accessories After opening the package, check the main unit and accessories. If anything in the following list is not included, contact RIKEN KEIKI. <Main Unit> <Standard Accessories> • Sampling probe: 1 SC-8000 main unit • Shoulder strap • Operating manual • Product warranty Dry battery unit (BUD-8000 (S)) SC-8000 -8- 3 Product Components 3-1. Main unit and standard accessories DANGER About explosion-proof • Do not modify or change the circuit or structure, etc. • When using the 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). • IP protection grade : IP20 The protection grade on explosion-proof official approval is IP20. IP protection grade at the time of product shipment is 67. About explosion-proof of the main unit • The battery units that can be connected are the BUL-8000(S) (certificate number TC20087) or BUD-8000(S) (certificate number TC20088). If battery units other than specification are used, it will deviate from the regulation of explosion-proof official approval. • The specifications of the gas monitor are as follows: Pump circuit: Allowable voltage of 4.95 V, allowable current of 1.12 A, and allowable power of 1138 mW Toxic gas sensor circuit: Allowable voltage of 4.95 V, allowable current of 0.834 A, and allowable power of 853 mW Buzzer circuit: Allowable voltage of 4.95 V, allowable current of 0.431 A, and allowable power of 441 mW Main circuit: Allowable voltage of 4.95 V, allowable current of 0.715 A, and allowable power of 732 mW Backup circuit: 3.0 VDC, 10 µA About explosion-proof of the battery unit • Replace the battery unit in a non-hazardous area. • The main unit that can be connected is SC-8000 (certificate number TC20086) only. The use with unspecified main units deviates from the range of explosion-proof certification. • The specifications of the BUD-8000(S) are as follows: Pump circuit: Maximum voltage of 4.95 V, maximum current of 1.12 A, and maximum power of 1138 mW Toxic gas sensor circuit: Maximum voltage of 4.95 V, maximum current of 0.834 A, and maximum power of 853 mW Buzzer circuit: Maximum voltage of 4.95 V, maximum current of 0.431 A, and maximum power of 441 mW Main circuit: Maximum voltage of 4.95 V, maximum current of 0.715 A, and maximum power of 732 mW Power supply: 4.5 VDC, 100 mA (LR6 3 pcs) • The specifications of the BUL-8000(S) are as follows: Pump circuit: Maximum voltage of 4.25 V, maximum current of 1.12 A, and maximum power of 901 mW Toxic gas sensor circuit: Maximum voltage of 4.25 V, maximum current of 0.768 A, and maximum power of 618 mW Buzzer circuit: Maximum voltage of 4.25 V, maximum current of 0.410 A, and maximum power of 330 mW Main circuit: Maximum voltage of 4.25 V, maximum current of 0.652 A, and maximum power of 525 mW Charging terminal : Allowable voltage AC250V -9- SC-8000 3 Product Components 3-2. Names and functions for each part NOTE There are the following two combinations of battery units. The following information is printed on the battery unit for the sake of identification to prevent a mistake in combinations. • Lithium ion battery unit : BUL-8000(S) (certification number TC20087) • Dry battery unit : BUD-8000(S) (certification number TC20088) Additionally, a nameplate indicating a compatible model is affixed on the top of the battery unit. Check this information and use a correct combination. Printing for identification 3-2. Names and functions for each part <Outline Drawing> SC-8000 - 10 - SC-8000 Battery Unit For model SC-8000 only 3 Product Components (1) (2) (3) (4) LCD display Buzzer sound opening Alarm LED arrays Infrared communication port (5) (6) (7) (8) (9) (10) (11) (12) ▲/AIR switch ▼/RESET switch DISPLAY switch POWER/ENTER switch Gas inlet Gas outlet Battery unit screws Battery cover (13) Battery cover fixing screw • 3-2. Names and functions for each part Display gas concentrations, alarms, etc. Emit a buzzer sound at an alarm. (Do not block it.) The lamp blinks in response to an alarm. Used to carry out data communications with a PC in data logger mode. Keep this switch pressed to perform fresh air adjustment. When an alarm occurs, press this switch to reset the alarm. Press this switch to change between display modes. Turn on and off the power. Connect a sampling hose to this port. Exhaust the gas drawn into the gas monitor. (Do not block it.) Turn these screws to detach and replace the battery unit. Open or close this cover to replace batteries. Must be closed while the gas monitor is in use. Fixe the battery cover. CAUTION Do not jab the buzzer opening with a sharp-pointed item. The unit may malfunction or get damaged, allowing water or foreign substance, etc. to get inside. • Do not remove the panel sheet on the display. The water-proof and dust-proof performances will be deteriorated. • Do not affix a label on the infrared port. Infrared communications can no longer be conducted. - 11 - SC-8000 3 Product Components 3-2. Names and functions for each part <LCD Display> (4) Pump driving indicator (1) Pilot indicator (2) Gas concentration digital and bar display (5) Gas name display (3) Battery level icon (1) (2) (3) (4) (5) Pilot indicator Gas concentration display digital and bar display Battery level icon Pump driving indicator Gas name display Displays the operating status in the detection mode. Normal: Blinking Displays the gas concentration as a numeric value and a level in the bar graph. Displays the battery level. See the information below for the meanings of battery level icons. Displays the suction status in the detection mode. Normal: Rotating Displays the gas name of detection target. NOTE The meanings of battery level icons are as follows: : Sufficient / : Low / : Needs charging If the battery level is lower than the above, the inside of the battery icon starts to blink ( SC-8000 - 12 - ). 4 How to Use 4-1. Before using the gas monitor 4 How to Use 4-1. Before using the gas monitor Not only the first-time users but also the users who have already used the product must follow the operating precautions. Ignoring the precautions may damage the gas monitor, resulting in inaccurate gas detection. 4-2. Preparation for start-up Before starting gas detection, read and understand the following precautions. Ignoring these precautions may prevent correct gas detection. • • • • Check that the battery level is sufficient. Check that there is no bend or hole in the sampling probe. Check that the filter in the sampling probe is free of dust or clogging. Check that the main unit and sampling probe are connected properly. - 13 - SC-8000 4 How to Use 4-2. Preparation for start-up <Attaching Batteries> (When the dry battery unit BUD-8000(S) is used) When the gas monitor is used for the first time, or when the battery level is low, attach new AA alkaline batteries. CAUTION <Replacement> • Turn off the power of the gas monitor before replacing the batteries. • Replace the batteries in a non-hazardous area. • Replace all of the three batteries with new ones at one time. • Pay attention to the polarities of the batteries. • If the battery cover fixing screw is not completely tightened, the dry batteries may drop off or water may get in through the clearance. Water may also get in if a minute foreign substance is caught beneath the battery unit. • Please shorten time to make the gas monitor upside-down in case of battery replace. • Please shorten time to turn off the gas monitor electricity in case of battery replace. <Batteries> • Use AA alkaline batteries (Type LR6 manufactured by Toshiba). Chargeable batteries cannot be used. (1) Using a flathead screwdriver or coin, turn the battery cover fixing screw counterclockwise to open the battery cover. (2) Paying attention to the polarities of batteries, replace all the three batteries with new ones. (3) Close the battery cover and tighten the battery cover fixing screw. (4) After replacing the batteries, place the gas monitor with the display facing upward. SC-8000 - 14 - 4 How to Use 4-2. Preparation for start-up <Charging Battery Unit> (when the lithium ion battery unit BUL-8000(S) <Option> is used) When the gas monitor is used for the first time, or when the battery level is low, be sure to use the accessory AC powered charger to charge the batteries. • • • • CAUTION Use the dedicated AC powered charger. Charge the battery unit in a non-hazardous area. Charge the battery unit at ambient temperatures between 0 to 40ºC. Do not use the gas monitor while charging it. Correct measurements cannot be obtained. Furthermore, the batteries get deteriorated more quickly and may have shorter life. • The AC powered charger is not water-proof or dust-proof. Do not charge the batteries while the gas monitor is wet. • The AC powered charger is not explosion-proof. (1) Open the charging jack cover of the gas monitor. CAUTION Do not pull the charging jack cover too hard. It may get damaged. (2) Put the plug of the AC powered charger into the charging jack of the gas monitor. (3) Connect the AC powered charger to the wall electric outlet. When charging is started, the charging indicator lamp lights up (red). (Charging time: Three hours at the maximum until the batteries are fully charged) (4) When charging is completed, the charging indicator lamp goes off. (5) When charging is completed, disconnect the AC powered charger from the wall electric outlet. (6) Pull out the AC powered charger plug from the power jack of the gas monitor and reattach the charging jack cover. Put the charging jack cover as far as it will go. • CAUTION Do not use the gas monitor with the charging jack cover detached. Dust or water may get into the gas monitor, causing it to malfunction. Replace the charging jack cover if it is damaged. • If the charging jack cover is not completely closed, water may get in from the power jack. The same thing occurs if a minute foreign substance is caught beneath the cover. • Disconnect the AC powered charger from the wall electric outlet while it is not in use. NOTE • • During charging, the battery pack may get hot, but this is not abnormal. The temperature of the gas monitor is high immediately after charging is completed. Let it leave for 10 minutes or more before using it. Otherwise, correct measurements may not be obtained. • When fully charged batteries are charged again, the charging indicator lamp does not go on. - 15 - SC-8000 4 How to Use 4-2. Preparation for start-up <Detaching Battery Unit> (1) Loosen the two battery unit screws. (They need not be completely detached.) (2) Detach the battery unit. (3) Attach a new battery unit. Connection terminal NOTE Make sure that the battery unit is installed in correct orientation by checking the locations of the connection terminal and projection portions. (4) Securely tighten the two battery unit screws. Battery unit screws CAUTION • Turn off the power of the gas monitor before replacing the battery unit. • Detach and reattach the battery unit in a non-hazardous area. • If the battery unit screw is not completely tightened, the battery unit may drop off or water may get in through the clearance. Water may also get in if a minute foreign substance is caught beneath the battery unit. • Do not damage the rubber seal. • To maintain the water-proof and dust-proof performances, it is recommended to replace the rubber seal every two years, whether or not it has an abnormality. • Please shorten time to make the gas monitor upside-down in case of battery replace. • Please shorten time to turn off the gas monitor electricity in case of battery replace. Bottom of Gas Monitor (5) After attaching the battery unit, place the gas monitor with the display facing upward. SC-8000 - 16 - 4 How to Use 4-2. Preparation for start-up <Connection of Sampling Probe> • Connect the sampling probe securely to the gas inlet (GAS IN) of the gas monitor. Insert the sampling hose to the gas inlet (GAS IN) until it clicks into place to ensure connection. • • CAUTION Use only a sampling probe specified by Riken Keiki. To avoid drawing foreign substances, always use the gas monitor with the sampling probe connected to it. NOTE • Release Sampling ring probe Main unit To remove the sampling probe from the gas inlet, pull it while pushing the release ring against the main unit. Pull out the sampling probe while pushing the release ring against the main unit. - 17 - SC-8000 4 How to Use 4-3. Basic operating procedures 4-3. Basic operating procedures Normally, the detection mode is used for normal operations. (The detection mode is activated after the power is turned on.) <<Detection Mode>> RESET AIR (long pressing) <<Gas Alarm Status>> (Self-latching <Reset after Recovery to Normal Status>) <<Air Calibration Mode>> DISPLAY <<Fault Alarm Status>> (Self-latching) SC-8000 <<Display and Setting Mode>> - 18 - 4 How to Use 4-4. How to start the gas monitor 4-4. How to start the gas monitor <<Start-up Procedure>> Keep the POWER switch pressed for three seconds or more. ↓ LCD Alarm lamp lights up. Buzzer sounds once. (Beep) All LCDs Light Up. ↓ Date/Time Display ↓ Battery Voltage Display ↓ Gas Name and Full Scale Display ↓ First Alarm Setpoint Display ↓ Second Alarm Setpoint Display ↓ - 19 - SC-8000 4 How to Use 4-4. How to start the gas monitor ↓ ID Display ↓ Buzzer sounds twice. (Beep, beep) Detection Mode CAUTION After start-up, perform air calibration before performing gas detection (air calibration mode). NOTE • A sensor abnormality alarm is issued before the detection mode is entered if there is any abnormality in the sensor. Promptly contact RIKEN KEIKI. Gases cannot be detected if there is any abnormality in the sensor. • If there is an abnormality in the built-in clock, a fault alarm FAIL CLOCK may be issued. Press the RESET button. The fault alarm is temporarily reset, and measurement is started with incorrect clock time. • When the power is turned on in a low-temperature environment, the pump may produce bigger operating sound for warm-up (about 30 seconds). This is not abnormal. SC-8000 - 20 - 4 How to Use 4-5. How to detect 4-5. How to detect In the detection mode, put the sampling probe close to the detection area and take the reading on the display. Display example <- Display example Gas concentration: 0.0 ppm Battery level: Sufficient • • • • • • • • DANGER Toxic or other gases may blow out from the gas exhausting outlet. Never inhale the air or gases. WARNING The gas monitor is designed to draw gases around it under the atmospheric pressure. If excessive pressure is applied to the gas inlet and outlet (GAS IN, GAS OUT) of the gas monitor, detected gases may be leaked from its inside, thus leading to dangers. Be sure that excessive pressure is not applied to the gas monitor while used. Do not connect the sampling hose directly to a location with a pressure higher than the atmospheric pressure. The internal piping system may be damaged. When the fresh air adjustment is performed in the atmosphere, check the atmosphere for freshness before beginning the adjustment. If other gases exist, the adjustment cannot be performed properly, thus leading to dangers when the gas leaks. Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based on your judgment. Before use, check that there remains sufficient battery power. When the gas monitor is used for the first time or is not used for a long period, the batteries may be exhausted. Either replace the batteries with new ones or fully charge them before use. If a low battery alarm occurs, gas detection cannot be conducted. If the alarm occurs during use, turn off the power and promptly replace the batteries with new ones or charge them in a non-hazardous area. Do not block the buzzer sound opening. No alarm sound can be heard. - 21 - SC-8000 4 How to Use • 4-5. How to detect CAUTION Before performing gas detection, attach the sampling probe provided with the gas monitor to prevent disturbances by air dust. • Use the gas monitor with the LCD display facing upward. The gas monitor, when used with the LCD display in a tilted or flat status, may not display correct values. • If a high-concentration gas or highly adsorptive gas, such as HCI and NH3, is drawn, some gas may remain in the hose due to adsorption in the sampling probe or others. After drawing a high-concentration gas or highly adsorptive gas, clean the gas monitor to remove the adsorbed gas (draw fresh air and check that the reading becomes zero). Performing fresh air adjustment before cleaning it completely will result in inaccurate adjustment, giving adverse influence on measurement. • In gas detection at the place where the presence of a high-concentration gas is anticipated,ex. Bring a sampling probes to a detection area close gradually. Do not detect high- concentration gas exceeding a full scale. When a high-concentration gas exceeding a full scale is detected, the gas monitor may display OVER (OVER alarm) and FAIL BIAS (failure alarm) by turns. In that case, attract fresh air to the gas monitor. Measured value should descend, and wait until it is stabilized. Then, perform gas calibration. Because, zero point and gas sensitivity may be changed. NOTE • In a low-temperature environment, the operating time is shortened due to the battery performance property. • At a low temperature, the response of the LCD display may get slow down. SC-8000 - 22 - 4 How to Use 4-5. How to detect <Manual Memory> Any instantaneous value during measurement can be recorded. Up to 256 points of data can be recorded. When the number of recorded data points reaches the maximum, recorded data will be overwritten, starting from the oldest data. (1) In the detection mode, keep the ▼/RESET switch pressed and press the ▲/AIR switch to prepare for recording (about one second). The following screens are displayed in turn on the gas monitor. NOTE The screen displays the memory number, date, and instantaneous value in turn. Go to the next step to execute recording. No value is recorded at this point yet. If you do not want to record a value, press the DISPLAY switch to return to the detection mode. (2) Press the ENTER switch. The date and the instantaneous value at the time when the ENTER switch is pressed are recorded. (3) When END is displayed, the recording is completed. Returns to the detection mode. - 23 - SC-8000 4 How to Use 4-6. Modes 4-6. Modes Details on each mode are provided as follows. Mode Item LCD display Detection ― Concentration display Mode Details Normal state Air Calibration Mode ― AIR CAL Perform the zero adjustment. Display and Setting Mode Peak Display PEAK Display the maximum concentration detected during measurement from power-on to the present. Average Value and Elapsed Time Display AVERAGE Display the average value and elapsed time after power-on. Display example Average value: 3.0 ppm Elapsed time: 56 minutes SC-8000 Alarm Setpoint ALARM-P Display Alarm test Display the full scale and alarm setpoint values and check the alarm operations for the settings displayed. ID Setting ID SELECT Display an ID if it has been set in advance. Also used to change or set an ID. Log Data Display REC.DATA Display data recorded to the manual memory. Date/Time Display DATE Display the date and time. Buzzer Volume Selection BEEP SELECT Select either large or small for buzzer volume. - 24 - 4 How to Use 4-7. Air calibration mode 4-7. Air calibration mode Keep pressing the AIR switch until RELEASE is displayed. When the AIR switch is pressed, the display changes to Adj - HOLD AIR. When RELEASE is displayed, release the AIR switch. When the zero adjustment is successfully completed, and you return to the detection mode. WARNING When air calibration is performed in the atmosphere, check the atmosphere for freshness before beginning the calibration. If other gases exist, the adjustment cannot be performed properly, thus leading to dangers when the gas leaks. • CAUTION Perform air calibration under pressure and temperature/humidity conditions close to those in the operating environment and in fresh air. • Perform air calibration after the reading is stabilized. • If there is a sudden temperature change of 15°C or more between the storage and operation locations, turn on the power of the gas monitor, let it leave for about 10 minutes in a similar environment to the operation location, and perform air calibration in fresh air before using it. - 25 - SC-8000 4 How to Use 4-7. Air calibration mode NOTE • • Air calibration can be performed even when there is a gas alarm. If air calibration fails, "FAIL" - "AIR CAL" is displayed. Press the RESET button to reset the fault alarm (calibration failure). When the alarm is reset, the value before calibration is displayed. If sensor is faulty SC-8000 - 26 - 4 How to Use 4-8. Display/setting mode 4-8. Display/setting mode This mode allows you to change various displays and settings. Every time the DISPLAY switch is pressed, various screens are displayed in turn. LCD Detection Mode Display and Setting Mode PEAK Display the maximum concentration detected during measurement from power-on to the present. Display example Average value: 3.0 ppm Elapsed time: 56 minutes Average Value and Elapsed Time Display Display the average value and elapsed time after power-on. Full Scale Display/Alarm Setpoint ENTER Display/Alarm Test ⇒ P30 Full Scale Display/Alarm Setpoint Display/Alarm Test Display the full scale and alarm setpoint values and check the alarm operations for the settings displayed. - 27 - SC-8000 4 How to Use 4-8. Display/setting mode ID Display/Selection Display an ID if it has been registered in advance. Also used to select an ID. ID Display/Selection ⇒ P31 ENTER Log Data Display Display concentration data recorded to the manual memory. Log Data Display ⇒ P32 ENTER Date/Time Display Buzzer Volume Selection To Detection Mode NOTE The gas monitor automatically returns to the detection mode in about 20 seconds if the gas monitor is left unoperated. SC-8000 - 28 - 4 How to Use 4-8. Display/setting mode <Full Scale Display/Alarm Setpoint Display/Alarm Test "ALARM-P"> Display the full scale or alarm setpoint values and check the alarm operations for the settings displayed. (1) Press the DISPLAY switch and select the full scale display / alarm setpoint display / alarm test from the display/setting mode menu. The following screens are displayed in turn on the gas monitor. (2) Press the ENTER switch to enter the alarm setpoint or other display. NOTE If you do not want to enter any display, press the DISPLAY switch to return to the display/setting mode menu. (3) Every time the ▲ or ▼ switch is pressed, the full scale and alarm setpoint menus, i.e., full scale display, first alarm setpoint display and second alarm setpoint display, are displayed in turn. Press either the ▲ or ▼ switch to select a setting that you want to check. Select one of the following screens: Full Scale Display First Alarm Setpoint Display (WARNING) Second Alarm Setpoint Display (ALARM) (4) Press the ENTER switch to perform alarm test. The alarm operation on this screen can be checked. Press any switch to stop the alarm operation. (5) Press the DISPLAY switch to exit the alarm setpoint display or alarm test. The display/setting mode menu is displayed again. (6) After completion, press the DISPLAY switch several times until it returns to the detection mode. - 29 - SC-8000 4 How to Use 4-8. Display/setting mode <ID Display/Selection "ID SELECT"> Display an ID if it has been registered in advance. Also used to select an ID. (1) Press the DISPLAY switch and select the ID display/selection from the display/setting mode menu. The following screens are displayed in turn on the gas monitor. (2) Press the ENTER switch to set or select an ID. NOTE • If you do not want to set or select an ID, press the DISPLAY switch to return to the display/setting mode menu. • On the gas monitor, either of the IDs from ST-ID000 to ST-ID255 has been registered, unless otherwise specified. • The data logger management program (option) is required to register or change an ID. Please contact RIKEN KEIKI. • When an ID is not selected (factory default), the following display appears without showing an ID. (3) Press either the ▲ or ▼ switch to select an ID. Every time the ▲ or ▼ switch is pressed, the ID number increases or decreases (000-255). (4) Press the ENTER switch. (5) When END is displayed, the setting is completed. The display/setting mode menu is displayed again. (6) After completion, press the DISPLAY switch several times until it returns to the detection mode. SC-8000 - 30 - 4 How to Use 4-8. Display/setting mode <Log Data Display "REC.DATA"> Display concentration data recorded to the manual memory. (1) Press the DISPLAY switch and select the log data display from the display/setting mode menu. The following screens are displayed in turn on the gas monitor. (2) Press the ENTER switch to display the log data. NOTE If you do not want to display the log data, press the DISPLAY switch to return to the display/setting mode menu. (3) Every time the ▲ or ▼ switch is pressed, the log data menus are displayed in turn. Press either the ▲ or ▼ switch to select log data that you want to check. The log data menu displays the year, month, day, time, and memory number. (4) Press the ENTER switch to display the selected log data. (5) If you want to display other log data, press the ENTER switch to return to the log data menu. Repeat the steps (3) to (5). (6) After completion, press the DISPLAY switch several times until it returns to the detection mode. - 31 - SC-8000 4 How to Use 4-9. How to exit <Buzzer Volume Selection> Select a volume for the alarm sound. (1) Press the DISPLAY switch and select the buzzer volume selection display from the display/setting mode menu. The following screens are displayed in turn on the gas monitor. (2) Press the ENTER switch to select a buzzer volume. (3) Press either the ▲ or ▼ switch to select a buzzer volume. (3) Every time the ▲ or ▼ switch is pressed, SMALL and LARGE are displayed in turn. Select one of the following screens: SMALL (buzzer volume: small) LARGE (buzzer volume: large) (4) Press the ENTER switch. (5) When END is displayed, the setting is completed. The display/setting mode menu is displayed again. (6) After completion, press the DISPLAY switch to return to the detection mode. 4-9. How to exit Make the gas monitor draw in fresh air. After the display resets to zero, keep the POWER/ENTER switch pressed until the power is turned off. NOTE If the display is not zero when the power is turned off, a purge operation may be performed for 30 seconds at the maximum to clean the inside of the gas monitor. SC-8000 - 32 - 5 Operations and Functions 5-1. Gas alarm activation 5 Operations and Functions 5-1. Gas alarm activation Gas alarm: Triggered when the concentration of detected gas reaches or exceeds the alarm setpoint value. <<Self-latching>> Alarm display: Notified by blinking of a gas concentration value display, sounding of the buzzer, and lighting of the lamp. Alarm types: First alarm (WARNING), second alarm (ALARM) and OVER alarm <List of Gas Alarms> Alarm type Buzzer Alarm lamp LCD display First alarm Repeatedly sounds strong and weak beeps at about one second intervals: Beep, beep Repeatedly blinks at about one second intervals. Gas concentration and WARNING display blink. Second alarm Repeatedly sounds strong and weak beeps at about 0.5 second intervals: Blip, blip Repeatedly blinks at about 0.5 second intervals. Gas concentration and ALARM display blink. - 33 - OVER alarm Repeatedly sounds strong and weak beeps at about 0.5 second intervals: Blip, blip Repeatedly blinks at about 0.5 second intervals. Gas concentration and OVER display blink. SC-8000 5 Operations and Functions 5-1. Gas alarm activation <Display Operation> Gas Concentration Display In a gas alarm, the gas concentration display and the alarm type display blink. In case of over the detection range (Over Scale), "∩∩∩" is displayed on the LCD. Display example Alarm Lamp The alarm consists of two steps. Each of them is triggered when the respective alarm setpoint value is reached to or exceeded. Buzzer The alarm consists of two steps. Each of them sounds when the respective alarm setpoint value is reached to or exceeded. "Alarm Pattern (H-HH)" 1 second interval RESET 0.5 second interval Concentration Second alarm setpoint First alarm setpoint Time Alarm lamp, Buzzer WARNING Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based on your judgment. SC-8000 - 34 - 5 Operations and Functions 5-2. Fault alarm activation 5-2. Fault alarm activation Fault alarm: Triggered when an abnormality is detected in the gas monitor. <<Self-latching>> Alarm display: Notified by display of error messages, sounding of the buzzer, and lighting of the lamp. Alarm types: Low flow rate, sensor abnormality, battery voltage low, system abnormality, and calibration failure Determine the causes and take appropriate actions. If the gas monitor has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately. <Display Operation> LCD display Displays an error message. Alarm lamp Repeatedly blinks at about one second intervals. Buzzer Repeatedly sounds intermittent beeps at about one second intervals: Blip, beep, blip, beep Display example NOTE • To reset a low flow rate alarm (FAIL LOW FLOW), remove the cause of the low flow rate, and then press the RESET switch. • For information on malfunctions (error messages), see "8. Troubleshooting". 5-3. Other functions <Calibration History/Various Trend/Event History Functions> The gas monitor has history and trend functions. To use these functions, contact RIKEN KEIKI. NOTE The data logger management program (option) is required to use the history and trend functions. Please contact RIKEN KEIKI. - 35 - SC-8000 6 Maintenance 6-1. Maintenance intervals and items 6 Maintenance The gas monitor is an important instrument for the purpose of safety. To maintain the performance of the gas monitor and improve the reliability of safety, perform a regular maintenance. 6-1. Maintenance intervals and items • Daily maintenance: Perform maintenance before beginning to work. • Monthly maintenance: Perform alarm test once a month. • Regular maintenance: Perform a maintenance once or more for every six months to maintain the performance as a safety unit. Maintenance item Battery Level Check Concentration Display Check Flow Rate Check Filter Check Alarm Test Span Adjustment Gas Alarm Check SC-8000 Maintenance content Daily Monthly Regular maintenance maintenance maintenance Check that the battery level is sufficient. Make the gas monitor draw in fresh air and check that the concentration display value is zero. When the reading is incorrect, perform the zero adjustment (fresh air adjustment) after ensuring that no other gases exist around it. See the flow rate indicator to check for abnormalities. Check the dust filter for dust or clogging. Check the alarm lamp and buzzer for normal operation using the alarm test function. Perform the span adjustment by using the calibration gas. Check the gas alarm by using the calibration gas. - 36 - { { { { { { { { { { { { { { { { 6 Maintenance 6-2. Gas calibration method <About Maintenance Services> • We provide services on regular maintenance including span adjustment, other adjustments and maintenance. To make the calibration gas, dedicated tools, such as a gas cylinder of the specified concentration and gas sampling bag must be used. Our qualified service engineers have expertise and knowledge on the dedicated tools used for services, along with other products. To maintain the safety operation of the gas monitor, please use our maintenance service. • The followings are typical maintenance services. For more information, please contact RIKEN KEIKI. Main Services Battery Level Check Concentration Display Check Flow Rate Check Filter Check Alarm Test Span Adjustment Gas Alarm Check : Checks the battery level. : Verifies that the concentration display value is zero (or 20.9 vol% on the oxygen deficiency meter) by using the zero gas. Performs the zero adjustment (fresh air adjustment) if the reading is incorrect. : Checks the flow rate indicator to find abnormalities. Checks the flow rate by using an external flow meter to verify the correctness of the flow rate indicator on the gas monitor. If the flow rate is incorrect, performs the flow rate adjustment. : Checks the dust filter for dust or clogging. Replaces a dirty or clogged dust filter. : Checks the alarm lamp and buzzer for normal operation using the alarm test function. : Performs the span adjustment by using the calibration gas. : Checks the gas alarm by using the calibration gas. • Checks the alarm. (Checks the alarm activation when the alarm setpoint is reached.) • Checks the delay time. (Checks time to delay until the alarm is triggered.) • Checks the buzzer, lamp, and concentration display. (Check each activation of ALM1 and ALM2.) : Checks dust or damage on surface of the gas monitor, clean and repair such parts of the gas monitor. Replaces parts which are cracked or damaged. Cleaning and Repair of Gas Monitor (visual diagnosis) Gas Monitor : Uses the keys to check the operation of functions and parameters. Operation Check Replacement of : Replaces consumable parts, such as a sensor, filter and pump. Consumable Parts 6-2. Gas calibration method Perform span adjustment of sensors using a calibration gas at least once every six months. The span adjustment requires dedicated equipment and a calibration gas. Request RIKEN KEIKI for it. If you perform the span adjustment for yourself, prepare these tools in advance and perform the adjustment in accordance with the "Maintenance Manual." - 37 - SC-8000 6 Maintenance 6-3. How to clean 6-3. How to clean Clean the gas monitor if it becomes extremely dirty. The gas monitor must be turned off while cleaning it. Use a waste cloth to remove dust. Do not use water or organic solvent for cleaning because they may cause malfunctions. Because an extremely large amount of dust inside the sampling probe may disturb the gas detection, it must be cleaned with dry AIR, etc. CAUTION When cleaning the gas monitor, do not splash water over it or use organic solvents such as alcohol and benzene on it. The surface of the gas monitor may be discolored or damaged. NOTE When the gas monitor gets wet, water may remain in the buzzer sound opening or clearances. Drain water as follows: (1) Wipe away moisture on the gas monitor thoroughly using a dry towel, cloth, etc. (2) While holding the gas monitor firmly, shake it about ten times with the buzzer sound opening facing downward. (3) Wipe away moisture coming out from the inside thoroughly using a towel, cloth, etc. (4) Place the gas monitor on a dry towel, cloth, etc. and let it stand at normal temperatures. SC-8000 - 38 - 6 Maintenance 6-4. Parts replacement 6-4. Parts replacement <Replacement of Consumables> Sensor Replacement The built-in sensors of the gas monitor have a validity period and must be replaced regularly (within two years). The sensor life has expired if, for example, the sensors cannot be calibrated in span adjustment, the readings do not come back after fresh air adjustment, or the readings fluctuate. Contact RIKEN KEIKI. The warranty period is one year for all the sensors. Dust Filter Replacement Procedure Because the dust filter may gradually get dirty or clogged over the time, it must be replaced regarding the operating conditions. Check the dust filter, and then replace it as necessary. The gas monitor has various built-in filters. Sampling probe The sampling probe has a built-in Teflon filter. Replace the filter when it has absorbed water, has a low flow rate, or looks significantly contaminated. (1) Hold the handling part and turn the middle part (transparent ring) to separate the sampling probe. Transparent ring Handling part (2) Take out the following filter and insert a new filter. (3) Attach the tip that has been removed. Replacement - 39 - SC-8000 6 Maintenance 6-4. Parts replacement <Replacement of Regular Replacement Parts> List of recommended regular replacement parts No. 1 2 3 4 Item Rubber seal Tube Pump unit (RP-11) Lithium ion battery pack (BP-8000) Maintenance intervals 6 months 6 months Replacement intervals 2 years 3 - 8 years 1 - 2 years ⎯ ⎯ ⎯ Quantity (pieces per unit) 1 set 1 set 1 1 Remarks • About 500 cycles of charging and discharging • For BUL-8000(S) NOTE The above replacement intervals are recommendation only. The intervals may change depending on the operating conditions. These intervals do not mean the warranty periods either. The result of the regular maintenance may determine when to replace the parts. The operation of most of the periodical replacement parts must be checked after replacement by a qualified service engineer. For the stable operation of the gas monitor and safety, ask a qualified service engineer to take care of replacement of the parts whose operation must be checked. Please contact RIKEN KEIKI. SC-8000 - 40 - 7 Storage and Disposal 7-1. Procedures to store the gas monitor or leave it for a long time 7 Storage and Disposal 7-1. Procedures to store the gas monitor or leave it for a long time The gas monitor must be stored under the following environmental conditions. • In a dark place under the normal temperature and humidity away from direct sunlight • In a place where gases, solvents or vapors are not present Store the gas monitor in a shipping carton, if any, in which the product was delivered. Store the gas monitor away from dust, etc. if the shipping carton is not available. Make sure to store the gas monitor with the display facing upward. • CAUTION If the gas monitor is not used for a long time, turn on the power at least once every six months and check that the pump draws in air (about three minutes). The gas monitor, when not activated for a long time, may cease to work because of hardening of the grease in the pump motor. • Store the gas monitor with dry batteries attached. While the power of the gas monitor is OFF, the sensor is energized at all times. If dry batteries are removed, the sensor may not function at the next use of the gas monitor. Therefore, it is necessary to store the gas monitor with the batteries in it. NOTE • Check that the battery level is sufficient once every six months. If a low battery voltage alarm is triggered while checking, replace the dry batteries with new ones (or charge the Lithium ion battery unit). Because the sensor is energized at all times even when the power is OFF, it is necessary to replace the batteries (or charge the Lithium ion battery unit). If the gas monitor is used with low-level batteries, battery leaks resulting from over discharging may occur. • If the gas monitor with a Lithium ion battery unit is not used for a long time, it is recommended to store it after discharging the batteries until the battery level icon shows one battery mark or so. If the gas monitor is stored with the batteries fully charged, the batteries get deteriorated more quickly and may have shorter life. - 41 - SC-8000 7 Storage and Disposal 7-2. Procedures to use the gas monitor again 7-2. Procedures to use the gas monitor again CAUTION When you use a stopped/stored gas monitor again, do not forget to perform a gas calibration. For information on readjustment including gas calibration, please contact RIKEN KEIKI. 7-3. Disposal of products When the gas monitor is disposed of, it must be treated properly as an industrial waste in accordance with the local regulations. • WARNING Do not disassemble the electrochemical type sensor because it contains electrolyte. Electrolyte may cause severe skin burns if it contacts skin, while it may cause blindness if it contacts eyes. If electrolyte is adhered on your clothes, that part on your clothes is discolored or its material is decomposed. If contact occurs, rinse the area immediately with a large quantity of water. • Dispose of the batteries in accordance with procedure specified by the local authority. SC-8000 - 42 - 8 Troubleshooting 8 Troubleshooting The troubleshooting does not explain the causes of all the malfunctions which occur on the gas monitor. This simply helps to find the causes of malfunctions which frequently occur. If the gas monitor shows a symptom which is not explained in this manual, or still has malfunctions even though remedial actions are taken, please contact RIKEN KEIKI. <Abnormalities on Unit> Symptoms The power cannot be turned on. Causes The battery level is too low. Abnormal operations Key operations are disabled. The power switch was not pressed long enough. Improper installation of the battery unit Disturbances by sudden surge noise, etc. Disturbances by sudden surge noise, etc. System abnormalities FAIL SYSTEM System abnormalities FAIL SYSTEM Error No.000 Error No.010 Error No.021 Error No.031 Sensor abnormalities FAIL SENSOR A low battery voltage alarm is displayed. FAIL BATTERY A low flow rate alarm is displayed. FAIL LOW FLOW A circuit abnormality occurred. Abnormalities of internal ROM Abnormalities of internal RAM Abnormalities of internal FRAM Abnormalities of internal FLASH A sensor has failed. The battery level is low. Water or oil, etc. was drawn in. The gas sampling hose is clogged. Actions Lithium ion battery unit: Charge the batteries in a non-hazardous area. Dry battery unit: Replace all the three dry batteries with new ones in a non-hazardous area. For power-on, keep the POWER switch pressed until a beep is heard (about two seconds). Check whether the battery unit is properly attached to the main unit. Turn off and restart the gas monitor. In a non-hazardous area, remove the battery unit once, and reinstall the battery unit, and turn on the power to perform operations. Request RIKEN KEIKI for repair. Request RIKEN KEIKI for repair. Request RIKEN KEIKI to replace the sensor. Lithium ion battery unit: Turn off the power and charge it in a non-hazardous area. Dry battery unit: Turn off the power and replace the dry batteries with new ones in a non-hazardous area. Check the gas sampling hose for any damage or mark of drawn water or oil, etc. Check the gas sampling hose for connections, clogging, twisting, etc. - 43 - SC-8000 8 Troubleshooting Symptoms Fresh air adjustment cannot be performed. FAIL AIR CAL Clock abnormalities FAIL CLOCK The batteries cannot be charged. (Li-ion battery unit only) FAIL BIAS OVER and FAIL BIAS are displayed by turns. Causes The pump has deteriorated. Fresh air is not supplied around the gas monitor. Actions Request RIKEN KEIKI to replace the pump. Abnormalities of the internal clock Make a setting of Date/Time. If such a symptom is observed repeatedly, the built-in clock is seemingly malfunctioning. Thus, it must be replaced. Please contact RIKEN KEIKI. Connect the AC powered charger to the wall electric outlet and jack properly. Request RIKEN KEIKI for repair. The charger is not connected properly. A charging circuit abnormality occurred. The batteries have been fully charged. Abnormalities of bias voltage The concentrated gases far exceeding a full scale was attracted. Supply fresh air. When fully charged batteries are charged again, the charging indicator lamp does not go on. Request RIKEN KEIKI for repair. Attract fresh air to the gas monitor. Measured value should descend, and wait until it is stabilized. Then, perform gas calibration. Because, zero point and gas sensitivity may be changed. <Abnormalities of Readings> Symptoms The reading rises (drops) and it remains so. Causes Drifting of sensor output Presence of interference gas Slow leak A gas alarm is triggered despite of no gas leak and no other abnormalities at the detection point. Slow response Span adjustment impossible SC-8000 Environmental changes Presence of interference gas Disturbance by noise Clogged dust filter Bended or clogged suction tube or exhaust tube Condensation is formed inside the suction tube. Deteriorated sensor sensitivity Improper calibration gas concentration Deteriorated sensor sensitivity Actions Perform the zero adjustment (fresh air adjustment). Disturbances by interference gases cannot be eliminated completely. For information on actions, such as removal filter, please contact RIKEN KEIKI. A very small amount of the gas to be detected may be leaking (slow leak). Because ignoring it may cause dangers, take a remedial measure, i.e., taking actions the same as those for the gas alarm. Perform the zero adjustment (fresh air adjustment). Disturbances by interference gases cannot be eliminated completely. For information on actions, such as removal filter, please contact RIKEN KEIKI. Turn off and restart the gas monitor. If such a symptom is observed frequently, take appropriate measures to eliminate the noise. Replace the dust filter. Fix the defective parts. Fix the defective parts. Request RIKEN KEIKI to replace the sensor. Use the proper calibration gas. Request RIKEN KEIKI to replace the sensor. - 44 - 9 Product Specifications 9-1. List of specifications 9 Product Specifications 9-1. List of specifications <Japanese Specifications> Detection principle Detectable gas Gas concentration display Measuring range Detection method Suction flow Alarm preset point Various indications Alarm sound Alarm accuracy Electrochemical type Toxic gas LCD(digital) Depend on Detectable gas Pump suction method Above 0.5L/min Depend on Detectable gas Gas/Battery condition/Pilot indicator/Flow indicator Above95dB(A)(30cm) Less than ±30%(against alarm preset point) (under an identical condition) Alarm-delay time Less than 60sec(when introducing 1.6 times thicker gas than alarm preset point) (under an identical condition) Gas alarm type Gas alarm indication Gas alarm indication Trouble alarm・Self diagnosis Trouble alarm indication Trouble alarm action Specification of transmission Various functions Power supply Continuous operation time Operating temperature Operating humidity Structure Explosion-proof structure Explosion-proof grade Explosion-proof approval No. Outer dimension Weight Two-level alarm(H-HH)/OVER Lamp blinking/Intermittent buzzer/Gas concentration display blinking Latched System failure/Sensor failure/Low Battery/Calibration failure/Flow failure Lamp blinking/Intermittent buzzer/Content display Latched IrDA LCD backlight/Data logger/Peak hold/Average/Logged data display/Beep select/Date Dedicated dry battery unit <three AA batteries>【BUD-8000(S)】 (Lithium ion battery unit【BUL-8000(S)】is available.) BUD-8000(S)：Approx.18hours(25℃・Non alarm operation) BUL-8000(S)：Approx.25hours(25℃・Non alarm operation・After full charge) -10〜40℃(non-rapidly-vary. It may differ according to mounted sensor.) 30〜70%RH(non-condensing. It may differ according to mounted sensor.) Dust and Water-proof Structure(IP67) Intrinsically safe structure ExiaⅡCT4(TIIS,Japan) TC20086(TIIS,Japan) Approx.154(W)×81(H)×154(D)mm(projection excluding) Approx.1.0kg(BUD-8000(S) when in use)/Approx.1.1kg(BUL-8000(S) when in use) * Specifications subject to changes without notice. - 45 - SC-8000 9 Product Specifications 9-1. List of specifications <Overseas Specifications> Detection principle Detectable gas Gas concentration display Measuring range Detection method Suction flow Alarm preset point Various indications Alarm sound Alarm accuracy Electrochemical type Toxic gas LCD(digital) Depend on Detectable gas Pump suction method Above 0.5L/min Depend on Detectable gas Gas/Battery condition/Pilot indicator/Flow indicator Above95dB(A)(30cm) Less than ±30%(against alarm preset point) (under an identical condition) Alarm-delay time Less than 60sec(when introducing 1.6 times thicker gas than alarm preset point) (under an identical condition) Gas alarm type Gas alarm indication Gas alarm action Trouble alarm・Self diagnosis Trouble alarm indication Trouble alarm action Specification of transmission Various functions Power supply Continuous operation time Operating temperature Operating humidity Structure Explosion-proof structure Explosion-proof grade Explosion-proof approval No. Outer dimension Weight SC-8000 Two-level alarm(H-HH)/OVER Lamp blinking/Intermittent buzzer/Gas concentration display blinking Latched System failure/Sensor failure/Low Battery/Calibration failure/Flow failure Lamp blinking/Intermittent buzzer/Content display Latched IrDA LCD backlight/Data logger/Peak hold/Average/Logged data display/Beep select/Date Dedicated dry battery unit <three AA batteries>【BUD-8000(S)】 (Lithium ion battery unit【BUL-8000(S)】is available.) BUD-8000(S)：Approx.18hours(25℃・Non alarm operation) BUL-8000(S)：Approx.25hours(25℃・Non alarm operation・After full charge) -10〜40℃(non-rapidly-vary. It may differ according to mounted sensor.) 30〜70%RH(non-condensing. It may differ according to mounted sensor.) Dust and Water-proof Structure(IP67) Intrinsically safe structure ExiaⅡCT4(ATEX/IECEx<DEKRA>) DEKRA11ATEX0047(DEKRA)/IECExDEK11.0019(IECEx) Approx.154(W)×81(H)×154(D)mm(projection excluding) Approx.1.0kg(BUD-8000(S) when in use)/Approx.1.1kg(BUL-8000(S) when in use) * Specifications subject to changes without notice. - 46 - 9 Product Specifications 9-2. List of accessories 9-2. List of accessories Standard accessories • Dry battery unit (BUD-8000 (S)) • Shoulder strap • Sampling probe Optional accessories • • • • • • • • • • • Lithium ion battery unit (BUL-8000 (S)) AC powered charger for BUL-8000(S) Dust filter for sampling probe Waist strap Waist strap fixing tool Sampling probe holder Activated carbon filter tube (with relay tube) Filter tube (NOx removal) (with relay tube) Filter tube fixing belt Aluminum trunk case Data logger management program - 47 - SC-8000 10 Definition of Terms 10 Definition of Terms ppm SC-8000 Gas concentration indicated in the unit of one-millionth of the volume - 48 -
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