Indoor Air Quality Detectors
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| Brand | Dräger |
|---|---|
| Origin | Germany |
| Model | Aerotest Simultan HP |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Tube-Based Quantitative Analysis |
| Operating Pressure | Up to 300 bar |
| Interface | G5/8 or INT |
| Flow Rate | 0.2–4.0 L/min |
| Dimensions (Carrying Case) | 300 × 360 × 80 mm |
| Weight | ~3 kg |
| CO Range | 5–150 ppm |
| CO₂ Range | 100–3000 ppm |
| Oil Range | 0.1–1.0 mg/m³ |
| Water Vapor Range | 2–450 mg/m³ (standard) / 20–500 mg/m³ (high-range tube) |
| Brand | Jiada Xiaotianshe |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GDYK-800M |
| Instrument Type | Portable |
| Measurement Principle | Spectrophotometry |
| Display | 12-inch multi-touch LCD |
| Connectivity | Ethernet, USB, Wi-Fi, 4G |
| Power Supply | AC/DC dual-mode |
| Light Source | High-brightness LED |
| Wavelengths | 630 nm (formaldehyde, TVOC), 430 nm (ammonia), 465 nm (benzene & homologues, TVOC) |
| Detection Limits | Formaldehyde 0.01 mg/m³, Ammonia 0.10 mg/m³, Benzene & Homologues 0.05 mg/m³, TVOC 0.05 mg/m³ |
| Measurement Ranges | Formaldehyde 0.00–2.00 mg/m³, Ammonia 0.00–5.00 mg/m³, Benzene & Homologues 0.00–1.00 mg/m³, TVOC 0.00–4.00 mg/m³ |
| Accuracy | ±5% |
| Sample Cell | 19 mm cylindrical glass cuvette and 50 mm rectangular glass cuvette |
| Operating Temperature | 5–40 °C |
| Built-in Thermal Printer | Yes |
| Brand | Jilin University-Xiaotianshe |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Region of Manufacture | Domestic (China) |
| Model | GDYK-501RC |
| Instrument Type | Portable |
| Operating Principle | Spectrophotometry |
| Detection Parameters | Formaldehyde (HCHO), Benzene Homologues, Total Volatile Organic Compounds (TVOC), Ammonia (NH₃) |
| Detection Limits (mg/m³) | 0.01 (HCHO), 0.05 (Benzene Homologues), 0.05 (TVOC), 0.10 (NH₃) |
| Measurement Ranges (mg/m³) | 0.00–2.00 (HCHO), 0.00–1.00 (Benzene Homologues), 0.00–4.00 (TVOC), 0.00–5.00 (NH₃) |
| Light Sources | 630 nm (HCHO), 465 nm (Benzene/TVOC), 430 nm (NH₃) |
| Analytical Methods | National Standard Phenol Reagent Method (HCHO), Colorimetric Methods (Benzene/TVOC), National Standard Nessler’s Reagent Method (NH₃) |
| Accuracy | ±5% FS |
| Display | 5-inch TFT color touchscreen + 2.9-inch e-ink auxiliary display |
| Connectivity | USB, RS232, RS485 (optional), Bluetooth (for wireless printing) |
| Power Supply | Rechargeable Li-ion battery + AC/DC adapter |
| Data Storage | Internal non-volatile memory with conditional search capability |
| Brand | Korno |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | GT-903-SF6 |
| Instrument Type | Portable |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Detection Gas | Sulfur Hexafluoride (SF₆) |
| Measurement Range | 0–100 / 1000 / 2000 / 10,000 ppm |
| Resolution | 1 ppm (0–10,000 ppm) |
| Response Time (T90) | ≤20 s |
| Accuracy | ≤±3% FS |
| Linearity Error | ≤±2% FS |
| Zero Drift | ≤±2% FS |
| Recovery Time | ≤20 s |
| Sensor Expandability | Up to 4 optional gas sensors |
| Explosion Protection Certification | CLEx25.9118 (IECEx / ATEX-compliant design per GB/T 3836.1 & GB/T 3836.4–2021) |
| Ingress Protection | IP67 |
| Operating Temperature | −20 °C to +50 °C |
| Operating Humidity | ≤95% RH (non-condensing) |
| Pressure Range | 88–112 kPa |
| Battery | 3800 mAh rechargeable polymer lithium-ion |
| Charging | USB-C (compatible with PC, power bank, wall adapter) |
| Data Storage | 120,000 records (real-time or scheduled logging) |
| Calibration | Full software-controlled auto-calibration |
| Safety Features | Overvoltage protection, overcharge protection, ESD shielding, magnetic field immunity |
| Dimensions | 180 × 85 × 55 mm (L×W×H) |
| Weight | 0.5 kg (net) |
| Brand | Korno |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | MOT500-SF6 |
| Instrument Type | Online Fixed-Mount Detector |
| Detection Principle | Non-Dispersive Infrared (NDIR) Spectroscopy |
| Measurement Range | 0–100 / 1000 / 2000 / 10000 ppm or 0–20% / 0–100% vol SF₆ |
| Resolution | 1 ppm (0–10000 ppm), 0.01% vol (0–100% vol) |
| Response Time (T90) | ≤20 s |
| Accuracy | ≤±3% FS |
| Linearity Error | ≤±1% FS |
| Zero Drift | ≤±2% FS |
| Recovery Time | ≤20 s |
| Sensor Expandability | Up to 6 gas channels (optional) |
| Repeatability | ≤±1% FS |
| Explosion Protection Certification | CCRI24.8021X (Ex d IIB T4 Gb / Ex tb IIIC T130°C Db) |
| Ingress Protection | IP66 |
| Operating Temperature | −20 to +50 °C |
| Operating Humidity | ≤95% RH (non-condensing) |
| Power Supply | 24 VDC (12–30 VDC) |
| Output Signals | 4–20 mA (16-bit), RS485 (Modbus RTU), 0–5 V / 0–10 V, 2× relay (expandable to 3) |
| Communication Options | Cable (≤2 km), TCP/IP (fiber/Ethernet), GPRS (optional), 433 MHz wireless (2–10 km) |
| Installation | Wall-mount, threaded pipe (M40×1.5 mm), flow-through |
| Enclosure Material | Die-cast aluminum with sandblasted anodized/fluorocarbon coating |
| Dimensions & Weight | 226 × 215 × 85 mm (L×W×H), 1.7 kg (net) |
| Compliance | GB/T 3836.1–2021, GB/T 3836.2–2021, GB/T 3836.31–2021 |
| Brand | OSEN |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | OSEN-SN20 |
| Instrument Type | Online Continuous Monitoring System |
| Detection Principle | Electrochemical Sensing |
| Price | USD 350 (Reference FOB Shenzhen |
| Brand | OSEN |
|---|---|
| Model | OSEN-ZH100 |
| Type | Online Fixed-Station Monitor |
| Origin | Guangdong, China |
| Sensor Integration | PM2.5, PM10, SO₂, NO₂, CO, O₃ (standard) |
| Data Transmission | GPRS + Ethernet |
| Mounting | Wall-Mounted |
| Alarm Output | Visual (LED), Audible (Buzzer), Relay Control |
| Cloud Platform | Web & WeChat Access |
| Compliance | Designed for indoor IAQ monitoring per GB/T 18883–2022 and ISO 16000 series principles |
| Software Features | Remote threshold configuration, audit-log-enabled alarm history, parameter-specific hysteresis setting |