OC-905 Portable pump-suction CH2O formaldehyde gas detector, handheld formaldehyde monitor with built-in pump, sound light alarm, used for decoration site, furniture factory and indoor air quality safety inspection.
Product Description
This CH₂O (Formaldehyde) gas detector is professionally developed to detect formaldehyde concentration in ambient air. Equipped with high-stability electrochemical sensor, the device realizes continuous, real-time and accurate monitoring of formaldehyde gas. Formaldehyde is a common toxic volatile gas, widely generated in decoration, wood processing and chemical production. Excessive inhalation will cause harm to human respiratory system. This detector effectively identifies formaldehyde leakage and volatile pollution. It is widely adopted for indoor air acceptance, furniture manufacturing workshops, decoration projects, chemical factories and testing laboratories, effectively avoiding formaldehyde over-standard risks and protecting personnel health.
Core Features
High precision electrochemical sensor, fast response speed and reliable measurement
Built-in optimized anti-interference algorithm, effectively suppress interference from other VOC volatile gases
Freely adjustable alarm threshold, equipped with sound, light and vibration triple alarm reminder
Clear LCD display, real-time display CH₂O concentration, ambient temperature and equipment operating status
Support data recording and historical data export function
Two styles optional: portable handheld model and wall-mounted fixed transmitter
Low zero drift, long service life, simple structure and convenient daily maintenance
Dustproof shell design, adapt to indoor and general industrial working conditions

Feature:
Built-in Pump Sampling: Stable flow rate (300ml/min) for fast and accurate detection
High Precision Sensors: Imported sensors with intelligent algorithm and temperature compensation
Audible & Visual Alarm: Dual alarm system with ≥75dB buzzer and LED light
Data Storage & Export: Stores up to 100,000 records, USB data export supported
Explosion-Proof Design: Certified Ex ib IIC T4 Gb for hazardous environments
Long Battery Life: Rechargeable lithium battery, up to 12 hours operation
Technical Parameter:
| Gas type | Formaldehyde (CH₂O) |
| Working principle | Electrochemical sensor |
| Measuring range | 0-10.00ppm、20ppm、50ppm、100ppm、200ppm, Support customized |
| Resolution | 0.01ppm or customized |
| Concentration unit | %LEL, %Vol, ppb, ppm, mg/m3 |
| Precision | ±≤3%F.S |
| Repeatability | ≤±2% |
| Zero drift | ≤±1%(F.S/year) |
| Sampling mode | Pump-suction sampling (Flow rate of 300ml/minute) |
| Data storage | Can record 100000 group of measuring data |
| Response time | T90≤30s (different gas sensors have different response times) |
| 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; |
| Working temperature | -20℃~50℃(Special requirements need to be customized) |
| Working humidity | 10%-95%RH(non-condensing) |
| Working pressure | 86Kpa~106Kpa |
| Explosion-Proof grade | Ex ib IIC T4 Gb |
| Protection grade | IP54 |
| Alarm mode | Audible, visual. Two-color LED alarm light, sound≥75dB@25cm |
| Shell material | Aluminum alloy metal housing, ABS+PC |
| Power supply | 3.7VDC, 2600mAh,Rechargeable lithium battery DC5V USB charger |
| Charge time | ≤6 hours |
| Working time | ≥12 hours (Normal temperature electrochemical sensor) |
| Power consumption | 0.5W |
| Dimensions | 200.5*64.8*35.5mm (L*W*H) |
| Weight | 0.46KG |
| Accessory | Box, instruction, USB charger , data line |
| Quality standard | GB15322.1-2003,GB3836.1-2010,GB3836.2-2010,GB3836.4-2010,GB12358-2006 |
Applications
Indoor Environment Testing Industry
Furniture & Wood Processing Factory
Decoration & Construction Engineering
Chemical & Resin Manufacturing Plant
Laboratory & Scientific Research Institutions
Automotive Interior Inspection
Textile Processing Factory
Public Places Air Quality Supervision
Packaging Material Production Workshop
Environmental Protection Inspection & Third-party Testing Institutions
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