OC‑905 handheld suction Arsenic Hydride AsH3 gas leak detector adopts built-in pump and imported high-precision sensor, used for on-site arsenic hydride gas leakage and concentration detection. Real-time gas concentration is displayed on 2.5-inch dot matrix LCD. It supports up to 100,000 groups data storage, data can be exported to PC via USB.
Equipped with 32-bit microprocessor and temperature compensation algorithm to ensure stable and accurate measurement. Two-stage adjustable audible and visual alarm will activate when gas concentration exceeds set threshold. Built-in sampling pump at 300ml/min, manual pump on/off control. Rechargeable lithium battery supports more than 12 hours continuous operation.
IP54 protection grade and Ex ib IIC T4 explosion-proof certification, suitable for harsh industrial environment. Widely applied in semiconductor factory, chemical plant, metallurgy workshop and special pipeline arsenic hydride gas safety monitoring.
Description:
OC-905 Portable Arsenic Hydride AsH3 gas detector designed with the inner pump and the famous brand sensors, with stable performance and high accuracy. Used to detect the single gas concentration for the Combustible gas, Toxic gas, Carbon Dioxide, Oxygen, TVOC, etc. It can directly display the gas concentration data on the screen, the data also could be exported to the computer by USB cable.
For the portable Arsenic Hydride AsH3 gas detector, the common applications is gas safety inspection and alarm for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, metallurgy, mining, fire, environmental protection, etc., where need to inspect the AsH3 gas concentration.
Features:
Used the original imported sensor, semiconductor technology of ultra low power 32 bit microprocessor, 24 bit ADC acquisition chip, so with the high accuracy.
2.5 inch dot matrix display interface.
All English operation menu and easy operation.
Unit data available for ppm and mg/m3.
The circuit installed the four layers of wire, so well anti-interference.
Explosion proof grade is Ex ib IIC T4 Gb
Function:
Inspect the gas concentration and alarm when it reaches preset alarm level.
High accuracy, good stability and good repeatability, long working life.
One-key operation to restore to factory default setting.
Adjustable two-stage audible-visual alarm threshold value.
Powered by rechargeable lithium battery with big capacity.
The built-in pump could be controlled.
Technical Parameter:
| Gas type | Arsenic Hydride (AsH3) |
| Measuring range | 0~10ppm, 20ppm, 50ppm or Customized. |
| Working principle | Electrochemical sensor |
| Resolution | 0.01ppm |
| Precision | ±≤3%FS or Customized |
| Repeatability | ≤±1% |
| Zero drift | ≤±1%(F.S/year) |
| Sampling mode | Pump-suction sampling (Flow rate of 300ml/minute) |
| Data storage | Can record 300000 group of measuring data |
| Response time | T90≤20s |
| Recovery time | ≤20s |
| Pre-heating time | ≤60s |
| Display | LCD dot matrix display of the Gas type, gas concentration unit, gas concentration data, time, battery status, data storage status; |
| Concentration unit | ppm,mg/m3 |
| Working environment | Working temperature: -20℃~60℃ Working humidity: 10%-95%RH(non-condensing) Working pressure: 86Kpa ~ 106Kpa |
| Explosion-Proof grade | Ex ib IIC T4 Gb |
| Protection grade | IP66 |
| Alarm mode | Audible, visual |
| Shell material | Metal |
| Power supply | 3.7VDC, 2800mAh,Rechargeable lithium battery DC5V USB charger |
| Charge time | ≤6 hours |
| Working time | ≥24 hours |
| Dimensions | 135*65*35mm |
| Weight | 0.5KG |
| Accessory | Box, instruction, USB charger , data line |
| Quality standard | GB15322.1-2003,GB3836.1-2010,GB3836.2-2010,GB3836.4-2010 |
Our Certificate

Our After-sales service:
1. OEM service for LOGO, model, Technical Parameters, Operation manual, etc.
2. Free calibration service and provide calibration methods.
3. One year warranty and lifetime warranty
How To Cooperate With Us?
We look forward to collaborating with more overseas gas detector and air quality monitor distributors and partners to advance the development and application of gas detection and air quality monitoring technologies.
Our Address
No. 923, Floor 9, Unit 2, NO.78, Shangding Road, Zhengzhou, China.
Phone Number
+86 15981942832
Contact:Oceanus Team
Mobile/WhatsApp:+86 15981942832
Mobile/WhatsApp:+86 13673683950
E-mail:info@china-oceanus.com
Add:No.923, Floor 9, Unit 2, NO.78, Shangding Road, Zhengzhou, China