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| Brand | Telaire |
|---|---|
| Origin | USA |
| Model | 7001 |
| Instrument Type | Portable |
| Detection Target | Multi-component (CO₂, Temperature) |
| CO₂ Range | 0–10,000 ppm |
| CO₂ Resolution | 1 ppm |
| Temperature Resolution | 0.1°C |
| Response Time | ≤60 s |
| Zero Drift | ≤20 ppm |
| Operating Temperature | 0–50°C |
| Storage Temperature | −20–60°C |
| Calibration Interval | 12 months |
| Output | RS-232, 0–4 VDC analog (CO₂ & temperature) |
| Power | 4×AA alkaline batteries (80 h) or 6 VDC external adapter |
| Brand | BJBY |
|---|---|
| Origin | Beijing, China |
| Model | HX-1500 |
| Instrument Type | Portable |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Target Gas | Carbon Monoxide (CO) |
| Measurement Ranges | CO: 0.0–50 ppm (also configurable to 200 ppm or 1000 ppm) |
| Temperature | −20–60 °C |
| Relative Humidity | 10–95 %RH |
| Resolution | 0.1 ppm |
| Repeatability | ≤1.0 %FS |
| Linearity Error | ≤±2 %FS |
| Zero Drift | Auto-zero compensation |
| Span Drift | ≤±2 %FS / 3 h |
| Response Time (T90) | ≤60 s |
| Warm-up Time | 30 min |
| Flow Rate | 0.5–2.0 L/min |
| Power Supply | AC 220 V (±10 %) or rechargeable internal battery |
| Data Interface | RS-485 |
| Data Storage | 500 records |
| Display | Color touchscreen LCD |
| Brand | TSI |
|---|---|
| Origin | USA |
| Model | 7515 |
| Instrument Type | Portable |
| Resolution | 1 ppm |
| Response Time | 20 s |
| Measurement Range | 0–5000 ppm |
| Accuracy | ±3.0% of reading or ±50 ppm (whichever is greater) |
| Power Supply | 4 × AA batteries |
| Operating Temperature | -20 to 60 °C |
| Dimensions (main unit) | 8.4 × 17.8 × 4.4 cm |
| Probe Dimensions | 7 cm length × 1.9 cm diameter |
| Sensor Technology | Dual-wavelength NDIR (Non-Dispersive Infrared) |
| Certification | CPA Pattern Approval Certificate (P.R. China) |
| Brand | BJBY |
|---|---|
| Origin | Beijing, China |
| Model | HX-2800 |
| Instrument Type | Portable |
| Detection Principle | Non-Dispersive Infrared (NDIR) Spectroscopy |
| Measurement Range | CO: 0–100 ppm, CO₂: 0–5000 ppm |
| Resolution | CO: 0.1 ppm, CO₂: 0.001% (10 ppm) |
| Linearity Error | ≤±2% FS |
| Repeatability | ≤1.0% FS |
| Zero Drift | ≤±2% FS/h |
| Span Drift | ≤±2% FS/3h |
| Response Time | CO ≤60 s, CO₂ ≤30 s |
| Preheat Time | 30 min |
| Flow Rate | 0.5–2.0 L/min |
| Digital Interfaces | RS-232, USB, Modbus RTU via RS-485 |
| Data Storage Capacity | Up to 5000 measurement records |
| Display | Color TFT touchscreen |
| Power Supply | AC 220 V (±10%) or rechargeable Li-ion battery |
| Alarm | Visual and audible alarm with configurable thresholds |
| Compliance | GB/T 18204.23–2000, GB/T 9801–1988, GB/T 18204.24–2000, JJG 635–2011 |
| Brand | TSI |
|---|---|
| Origin | USA |
| Model | 7525 |
| CO₂ Sensor Type | Dual-Wavelength NDIR |
| CO₂ Range | 0–5000 ppm |
| CO₂ Accuracy | ±3.0% of reading or ±50 ppm (whichever is greater) |
| CO₂ Resolution | 1 ppm |
| CO₂ Response Time | 20 s (t₉₀) |
| Temperature Sensor | Thermistor |
| Temp Range | 0–60 °C |
| Temp Accuracy | ±0.5 °C |
| Temp Resolution | 0.1 °C |
| Temp Response Time | 30 s (at 2 m/s air velocity, t₉₀) |
| RH Sensor | Thin-Film Capacitive |
| RH Range | 5–95 %RH |
| RH Accuracy | ±3.0 %RH |
| RH Resolution | 0.1 %RH |
| RH Response Time | 20 s (t₆₃) |
| Outdoor Air Percentage Calculation | 0–100 % |
| Resolution | 0.1 % |
| Operating Temperature | 5–45 °C |
| Storage Temperature | −20–60 °C |
| Dimensions (Instrument) | 8.4 × 17.8 × 4.4 cm |
| Probe Length | 17.8 cm |
| Probe Diameter | 1.9 cm |
| Time Constants | 1, 5, 10, 20, 30 s |
| Logging Interval | 1 s to 1 hr (user-selectable) |
| Data Storage Capacity | Up to 30,300 records |
| Weight (with batteries) | 0.27 kg |
| Power | 4 × AA batteries or optional AC adapter |
| Brand | BJBY (Beijing Baoyun) |
|---|---|
| Model | BY-200-CO2 |
| Type | Portable Gas Analyzer |
| Detection Principle | NDIR for CO₂ |
| CO₂ Range | 0–10,000 ppm |
| CO₂ Resolution | 1 ppm |
| CO₂ Accuracy | ±(40 + 3% of reading) ppm |
| HCHO Range | 0.00–5.00 mg/m³ |
| HCHO Resolution | 0.01 mg/m³ |
| HCHO Accuracy | ±5% |
| Dimensions (Analyzer) | 165 × 80 × 30 mm |
| Sensor Module Size | 123 × 45 × 15 mm |
| Display | Color TFT LCD |
| Power | Replaceable alkaline batteries |
| Data Connectivity | Bluetooth-enabled smartphone app with cloud upload capability |
| Data Logging | Internal storage with query function |
| Compliance | Designed for indoor air quality (IAQ) assessment per ISO 16814, ASHRAE Standard 62.1, and GB/T 18883–2022 (China IAQ guideline) |
| Brand | TSI |
|---|---|
| Origin | USA |
| Model | 7545 |
| Measured Parameters | CO₂, CO, Temperature, Relative Humidity |
| Derived Parameters | Dew Point Temperature, Wet-Bulb Temperature, Outdoor Air Fraction (calculated) |
| Sensor Technology | NDIR (CO₂), Electrochemical (CO), Capacitive (RH), Thermistor (Temperature) |
| Data Logging | Internal memory with timestamped records |
| Interface | USB for data download via TSI LogDat2™ software |
| Compliance | Designed to support ASHRAE 62.1, ISO 16814, and EN 13779 indoor air quality assessment protocols |
| Brand | BJBY (Beijing Baoyun) |
|---|---|
| Origin | Beijing, China |
| Model | HX-1200 |
| Instrument Type | Portable CO₂ Analyzer |
| Measurement Range | 0–10,000 ppm (extendable to 0–100% vol) |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Resolution | 1 ppm |
| Repeatability | ≤1% FS |
| Response Time (T₉₀) | ≤10 s |
| Data Storage | 256 measurement records with timestamp |
| Display | 3.5″ full-color TFT touchscreen |
| Communication Interface | USB 2.0 |
| Power Supply | Internal rechargeable Li-ion battery (≥200 h continuous operation) / External: 9 VDC ±10% or 220 VAC ±10% |
| Operating Environment | 0–50 °C, 10–95% RH (non-condensing) |
| Dimensions | 205 × 180 × 98 mm |
| Weight | 1.2 kg |
| Output Units | ppm, mg/m³, °C, %RH (auto-convertible) |
| Alarm | Visual (LED flash) & audible (≥85 dB at 30 cm) |
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