Oceanus OC-903 User manual

OC-903
Portable gas detector
Operating Manual
Henan Oceanus Import & Export Co., Ltd.

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Catalogue
◆Notice ………………………………………………………2
◆Description ………………………………………………………4
◆Feature …………………………………………………4
◆Parameter ……………………………………………………5
◆Structure ……………………………………………………7
◆Operation instruction ……………………………………………7
◆Operation interface …………………………………………………9
◆Remarks …………………………………………………12
◆Fault &Treatment ………………………………………………13
◆Data logger function …………………………………………14

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Notice:
Key instruction①：
Total six keys：▲、▼、Back、OK、run/stop、
Three interfaces：Testing interface、Menu interface、Setting interface
Six keys will have different function in the three interfaces as the
following:
Testing interface Menu interface Setting interface
▲ ---- move to left or up move to left or up /data plus
▼ ---- move to right or down
move to right or down/ data minus
Back ---- back back
OK main menu（Press 5s）
enter the sub menu Select/save
run/stop pump switch — —
on/off（Press 5s） on/off（Press 5s） on/off（Press 5s）
Attentions：OC-903 portable gas detector only available to detect the gas
concentration when the pump on.
Treatment for the over measuring range. ②
Please avoid use the device in concentration which exceeds the
measurement range. It will shorten the life of the sensor or damage the
sensor.
If user used the device under the high concentration gas exceeds the
measurement range, please take the device leave the environment at once,
and put the device in clean air for about half an hour to observe if the
displayed concentration value goes lower. If the value keep decreased,
please wait it decrease to zero, then power off. If the displayed value can
not decrease to zero in clean air, please send it back to manufacturer of

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distributor.
Remarks: If use the detector under the exceed range, this is not
provided the free repair service.
Calibrate service③
We promise all detector in our company be calibrated with normal gas
before leaving our factory, once bought from our company without need to
calibrate, and must under the professional technical guidance.
Warranty is 12months from the date leaving our factory, for the
accessory within 3months providing free maintenance, and for the detector
providing the free calibration service once in a year.
About the Backlight instruction④
OC-903 with the electricity saver procedure, when the device without
any operation within 30s, the detector will turn on the electricity saver
procedure automatically, then the screen will become dark, and press any
keys will become light again.
Fast operation instruction⑤
Mute: When the detector under the alarming, short press ▲ or ▼ will
be muted.
Manual storage：When the storage mode under the manual storage, on
the testing interface long press the ▲, then after the
“beep”, will keep the measuring data.
Menu entrance：Under the testing interface, long press “ok” for 5s
then will enter the menu.
Parameter revise instruction⑥
All parameter for OC-903 could be revised with the “Back”,
“OK”,▲,▼.

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1.Description
OC-903 series portable gas detector with dust detector, can be used
for multi gas and dust, at most for 4 sensors. With the imported sensor and
micro control technology, respond quickly, high accuracy and stability,
good repeatability. With the rechargeable 4000mA lithium battery,
continuous working for longer time. With the 2.4 inch industrial grade
color screen, displaying the each parameter and gas concentration, with the
function of detecting the temperature and humidity, also with the data
logger.
2.Feature
◆ With semiconductor technology of ultra low power 32 bit
microprocessor, 24 bit ADC acquisition chip.
◆ 2.4 inch IPS industrial grade color screen, displaying each parameter.
◆ It is able to select gas concentration unit of PPM、%VOL、mg/m3.
◆ For 1~4 gas detecting, supporting many sensor and temperature sensor,
humidity sensor.
◆ With data logger, about 100000 group of detecting data, could be
transmitted to computer.
◆ The various modes can be adjusted: detection model, storage model,
display model, pump model.
◆ The powerful pump, can be used in the micro vacuum environment.
◆The full auto calibration software, sensor can be adjusted up to six point
to ensure the accuracy and linearity of the measurement, also the
function of data recovery.
◆With overvoltage protection, overcharge protection, anti-static, anti
magnetic interference function.

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◆ Support Chinese or English operation menu.
◆ With the function of temperature compensation.
◆ With the temperature and humidity detection(optional).
3.Technical parameter
Product： Portable gas detector
Measuring
range： Refer to the gas list
Resolution：
Refer to the gas list
Gas type： At most for 4 sensors, the gas type will be according to your requirements.
Temperature
and
humidity：
Temperature：-40 ～ 120℃，Humidity：0-100%RH
Testing
mode：
Pump-suction，inner pump, adjustable flow rage(100-1000mL L/min), workable for the
vacuum environment.
Accuracy： ≤±3%F.S Linearity： ≤±1%F.S
Response
time： ≤20s（T90） Zero drift： ≤±1%（F.S/year）
Recovery
time： ≤20s Repeatability ： ≤±1%F.S
Testing
mode： Real-time detecting or Timing detecting is adjustable.
Data
Storage： Automatic storage or manual storage is adjustable; About 100000 group of data capacity.

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Explosion-Pr
oof grade： Ex d II CT4 Case Material ：
ABS+PC
Protection
grade： IP65 Working temperature： -30 ～ 60℃
Working
power： 4000mA rechargeable lithium battery Working humidity：
≤95%RH(non
-condensing)
Size and
weight：
180*80*60 mm（L×W×H）
0.5 Kg（Net weight）
Working
pressure：
-30Kpa ～
100Kpa
Accessory：
Dust filter, box, instruction, USB charger, data line, calibration cap
Target Gas List(Some gas not list, if need, please contact manufacturer)
Gas Range Accuracy Resolution Response time
Ex 0~100%LEL ≤±3%F.S 0.1%LEL ≤20s
CH4 0~100%LEL ≤±3%F.S 0.1%LEL ≤20s
O2 0~30%VOL ≤±3%F.S 0.01%VOL ≤20s
CO 0~1000PPM ≤±3%F.S 1PPM ≤20s
CO2 0~5000PPM ≤±3%F.S 1PPM ≤20s
O3 0~50PPM ≤±3%F.S 0.01PPM ≤20s
H2S 0~100PPM ≤±3%F.S 0.1PPM ≤20s
SO2 0~20PPM ≤±3%F.S 0.01PPM ≤20s
NO 0~100PPM ≤±3%F.S 0.1PPM ≤20s
NO2 0~20PPM ≤±3%F.S 0.01PPM ≤20s
Cl2 0~50PPM ≤±3%F.S 0.01PPM ≤20s
NH3 0~100PPM ≤±3%F.S 0.1PPM ≤20s
PH3 0~20PPM ≤±3%F.S 0.01PPM ≤20s
ETO 0~100PPM ≤±3%F.S 0.1PPM ≤20s
HF 0~10PPM ≤±3%F.S 0.01PPM ≤20s

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4.Structure
5.Operation instruction
5.1 Keys
Total six keys：▲、▼、Back、OK、run/stop、
Three interfaces：Testing interface、Menu interface、Setting interface
Six keys will have different function in the three interfaces as the
following:
Testing interface Menu interface Setting interface
▲ ---- move to left or up move to left or up /data plus
▼ ---- move to right or down
move to right or down/ data minus
Back ---- back back

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OK main menu（Press 5s）
enter the sub menu Select/save
run/stop pump switch — —
on/off（Press 5s） on/off（Press 5s） on/off（Press 5s）
Attentions：OC-903 portable gas detector only available to detect the gas
concentration when the pump on.
5.2 Power on
When power off, long press key for 5s to activate the backlight
and red indicator, then “beep”, then the detector power on. Then the
display will be sensor testing(3s),sensor information(1s),preheating for 60s
with the pump on. After the start-up, then will enter the Testing interface.
5.3 Power off
In normal working status, long press key for 5s, it will power off with
a buzzer tone.

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6.Operation interface
6.1 Testing interface display
After enter into the testing interface, for different gas quantity, will
display different interface：as the following picture, displaying one gas, two
gas, three gas, four gas orderly.
As the above displaying, time, temperature, pump running, battery
and humidity. Take A for example, for O3, CO, CH2O, Ex, for each gas
with the gas concentration; Once some up to the alarming value, it will
appear the alarming symbol, such as the CH2O alarming.