background image

 

 

 

Features

 

 

Small figure, portable and firm 

 

Audible-visual-vibration alarm 

 

Large screen digital display for the measurement value and alarm status 

 

Self-checking for the display, battery, sensor and alarm status when start up or 

when necessary. 

 

Regulation alert with glitter or sound signal 

 

Outstanding audio signals alarm 

 

Low cost for maintain 

 

Support multi gas detection for combustible gas, toxic gas or oxygen. 

 

Technical Parameter

 

 

 

Detecting Gas

 

 

Detecting Range

 

 

Accuracy

 

 

Resolution

 

Response

 

time

 

Oxygen (O2)

 

0-30%VOL

 

±3%(F.S)

 

0.1%VOL

 

≤15s

 

Combustible gas (Ex)

 

0-100%LEL

 

±3%(F.S)

 

1%LEL

 

≤5s

 

Carbon Monoxide (CO)

 

0-1000ppm

 

±3%(F.S)

 

1ppm

 

≤25s

 

Hydrogen Sulfide (H

2

S)

 

0-100ppm

 

±3%(F.S)

 

1ppm

 

≤30s

 

Sulfur Dioxide (SO

2

)

 

0-100ppm

 

±3%(F.S)

 

0.1ppm

 

≤30s

 

Nitrous Oxide (NO)

 

0-250ppm

 

±3%(F.S)

 

1ppm

 

≤60s

 

Nitrogen Dioxide (NO

2

)

 

0-20ppm

 

±3%(F.S)

 

0.1ppm

 

≤25s

 

Chlorine (Cl

2

)

 

0-20ppm

 

±3%(F.S)

 

0.1ppm

 

≤30s

 

Chlorine Dioxide (ClO

2

)

 

0-20ppm

 

±3%(F.S)

 

0.1ppm

 

≤30s

 

Ammonia (NH

3

)

 

0-100ppm

 

±3%(F.S)

 

1ppm

 

≤50s

 

Hydrogen (H

2

)

 

0-1000ppm

 

±3%(F.S)

 

1ppm

 

≤60s

 

Hydrocyanic Acid (HCN)

 

0-50ppm

 

±3%(F.S)

 

0.1ppm

 

≤200s

 

Chlorine Hydride (HCl)

 

0-20ppm

 

±3%(F.S)

 

0.1ppm

 

≤60s

 

Phosphine (PH

3

)

 

0-20 / 1000ppm

 

±3%(F.S)

 

0. 1 / 1ppm

 

≤25s

 

Summary of Contents for OC-904

Page 1: ...OC 904 Portable Gas detector Operating Manual Henan Oceanus ...

Page 2: ...ensors to make up 2 in 1 3 in 1 or 4 in 1 gas detector The standard four in one gas detector is for combustible gas CH4 O2 CO and H2S With the large LCD screen solid ABS materials body and accurate audible visual vibration alarm OC 904 can detect the hazardous gas in severe operating environment and alert the operator for preventive measure in time 2 Specifications 1 Keys 6 Sensor CO 2 LCD display...

Page 3: ...ecting Range Accuracy Resolution Response time Oxygen O2 0 30 VOL 3 F S 0 1 VOL 15s Combustible gas Ex 0 100 LEL 3 F S 1 LEL 5s Carbon Monoxide CO 0 1000ppm 3 F S 1ppm 25s Hydrogen Sulfide H2S 0 100ppm 3 F S 1ppm 30s Sulfur Dioxide SO2 0 100ppm 3 F S 0 1ppm 30s Nitrous Oxide NO 0 250ppm 3 F S 1ppm 60s Nitrogen Dioxide NO2 0 20ppm 3 F S 0 1ppm 25s Chlorine Cl2 0 20ppm 3 F S 0 1ppm 30s Chlorine Diox...

Page 4: ... 3 years catalytic combustible sensor 2 years electrochemical sensor Data storage with the data storage function with memory capacity of 1000 alarm records Display Large screen LCD Alarming Method Audible visual vibration alarm Direct Readout gas concentration value battery energy alarm status Explosion proof Grade Ex ibd IICT3 Protection Grade IP54 Operating Temperature 10 40 Operating Humidity 5...

Page 5: ...signal will also glitter on the screen When the power is exhausted the device will automatically power off When the under voltage alarm occurred please power off the device and charge up the battery The charging period should be about 3 5 hours 3 1 Keys Instruction Power on off Key Menu Key Up Key Down Key Power on Enter menu Select the option Select the option Power off Confirm setting Add the va...

Page 6: ...eting gas will be taken into gas sensor by the air flow When the sensor contact the gas it will response and display measurement value If user needs to remotely measure the gas concentration suction sampling is available with an external pump 3 3 1 Gas Alarm There is preset two grade alarm in the gas detector Grade Ⅰalarm value for combustible gas toxic gas it is low alarm for oxygen it is high al...

Page 7: ...ormal working mode User can set this function to be on or off or change the alarm mode referring to the instruction of setting mode The default setting of this function is off when leave factory 3 4 Setting Mode Auction In setting mode the gas detector will stop measurement working In working status press key to enter main setting menu below submenu will be displayed 1 System Setting 2 Zero Calibr...

Page 8: ...or key can select the option need to modify Alarm Value Select this option and press key to enter related information of sensor channel gas type and alarm value will be displayed as below take standard 4 in 1 gas detector as example Press or key to select the sensor channel need to modify press key to confirm the selection Press or key to modify the alarm value press key to confirm or press to exi...

Page 9: ...n leave the factory so it need not calibrated when first use After used for a period or when there is measurement error please calibrate it based on the below instruction The calibration must be operated by professionals or trained users For instruction of calibration please refer to 4 2 Gas Sensibility Calibration Alarm Setting This submenu is to set the alarm mode user can set the sound light vi...

Page 10: ...onfirm or press to exit 3 4 2 Zero Calibration This submenu is to calibrate the zero point for the gas detector Please refer to instruction of 4 1 Zero Calibration 3 4 3 Records View Select this submenu and press key to enter related information of alarm records will be displayed as below ...

Page 11: ...n view all alarm records with or key 4 Calibration 4 1 Zero Calibration For oxygen it is span gas calibration with standard value of 20 9 vol in clean air Zero calibration must be operated in clear air environment preferably once a day or calibrated after an alarm In the normal working mode press key to enter main menu Press or key to select the submenu Zero Calibration and press key to enter Now ...

Page 12: ...lease contact local agent or manufacturer 4 2 Gas Sensibility Calibration For oxygen it is zero calibration with the standard value of 0 0 vol For all gas sensors the gas sensibility calibration should be operated once every 6 to 12 months at least User should calibrate a sensor with one kind of calibrating gas the device will operate calibration automatically Below calibration tools are needed fo...

Page 13: ...Other Gas Renegotiable Flow meter and pressure reducer the recommended flow rate is 300ml min Silicone tubes for connection Calibration cap and screw to fix the calibration cap In normal working mode press key to enter the main menu Press or key to select the submenu Gas Calibration and press to enter Now the screen will display as below ...

Page 14: ...alibrate and connect the calibration equipment and gas detector as below Then inlet the calibration gas into the gas detector and wait until the display data becomes stable If the displayed concentration value is not the same as the ...

Page 15: ...r trained personnel 5 5 Please charge up the battery in safe place 5 6 Avoid heavy vibrations or dropping from high position 5 7 If the battery is under voltage the device may displays abnormally together with discontinuous sound prompt Please charge up the battery at once it will resume soon 5 8 Do not expose the device in the operating environment of high concentration aggressive gas for long ti...

Page 16: ...e the device in a humid environment 7 Standard Delivery 7 1 OC 904 gas detector 7 2 Operating manual 7 3 Battery charger 7 4 Calibration cap 7 5 Calibration cap screw 1pc 1pc 1pc 1pc 1pc Henan Oceanus Address Jinjiang International Garden No 10th Weilai Road Zhengzhou China Telephone 86 371 60998169 Email info china oceanus com Web http china oceanus com ...

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