Description
Overview
GAOTek Gas Test Instrument could detect combustible gas, O2 and other two types of toxic gases continuously and simultaneously. It is widely used in the area where explosion-proof is required or toxic gas leaks, like underground channels or mining industry, to protect the workers’ life and avoid damage on the relevant equipment.
Features
- Advanced MCU control with low power consumption
- Adjustable low and high alarm level
- Adjustable calibrating level
- High concentration protection for combustible gas
- Self-test for the combustible gas sensor
- Low battery indication
- Replaceable sensor module
- Self-adjustment function
- Visual and audible alarm with vibration
- STEL and TWA alarming for toxic gases
- Advanced self-examination and self-renovation function
- Password management to avoid wrong operation
- Explosive proof housing
Technical Specifications
Operating & Storage Environment | Temperature: -4 °F to 122 °F (-20 °C to 55 °C) Humidity: 5 % to 95 % (Relative humidity non-condensing) Pressure: 95 to 110 kPa |
Sampling method | Diffusion type |
Detecting Range | CO: 0 to 1000 ppm H2S:0 to 100 ppm O2: 0 to 30 % vol Combustible Explosive Gas (Ex / LEL / CH4): 0 to 100 % LEL |
Sensor | O2 / H2S / CO: plug-in electrochemical sensor |
Alarm Type | low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm |
Resolution | 0.1 % VOL (O2), 1 ppm (CO), 0.1 ppm (H2S), 1 % LEL (EX) |
Accuracy | 3 % F. S |
Response time | 10 s |
Repeatability | 1 % |
Zero drift | 1 % |
Data record | 500 pcs of data storage |
Display | Alphanumeric large LCD displays the real time gas concentration and alarm stage |
Backlight | Automatically activated when working in poor lighting environment or the alarm sounding, or the button is knobbed down. |
Self-checking Function | Self-checking Battery power, display, sensor, hardware failure |
Explosion-proof | EXib IIB T3 Gb |
Protection grade | IP65 |
Power Supply | Rechargeable lithium battery |