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| Product Name | SMART SENSOR ST8900 Gas Detector | HuiRuiPu HRP-B1000-4 Gas Detector |
| Product Price | $241.00 | $159.00 |
| Details | Details | |
| Model comparison | ||
| Usage Type | Portable | Portable |
| Gas Quantity | Multi-gas | Multi-gas |
| Sensor Principle | Electrochemical Catalytic Bead | Electrochemical Catalytic Bead |
| Sampling Method | Diffusion | Diffusion |
| Detection gas | Ex O₂ CO H₂S | Ex O₂ CO H₂S |
| T90 Response Time | ≤10s | ≤30s |
| Explosion-proof | Ex ia (IS) | |
| IP Rating | ||
| Data Output | ||
| Parameter comparison | ||
| Detect gas | Oxygen/carbon monoxide/hydrogen sulfide/combustible gas | EX/O2/CO/H2S |
| Oxygen Range | 0~30%vol | |
| Carbon monoxide Range | 0~999ppm | |
| Range of hydrogen sulfide | 0~500ppm | |
| Combustible gas Range | 0~100%LEL | |
| intrinsic error | <±0.1% | |
| Response Time | Moment | <30s |
| Alarm value setting | Yes. | |
| Sensor principle | electrochemistry | electrochemistry |
| Alarm method | Sound, light and shock triple alarm, the alarm value can be set, and the alarm sound can reach 80 decibels | LCD display real-time data and system status, Light Emitting Diode, sound, vibration indication alarm, fault and underVoltage |
| operating temperature | -10~50℃ | |
| Environment humidity | 15~95%RH | |
| Sampling pump | optional | |
| Sampling pump flow rate | 0.5SCFH | |
| Sampling pump distance | 50 feet away | |
| Size | 75x138x43mm | |
| Storage temperature | 0~40℃ | |
| weight | 360g | 0.5kg |
| display screen | Segmented LCD | |
| Maximum open circuit Voltage | ≤4.2V | |
| working Voltage | 3.7V | |
| Operating Current | 230mA | |
| short circuit current | ≤3A | |
| Battery model | BL-9C | |
