Description
Overview
GAOTek no gas detector is a high performance intelligent infrared gas detection alarm which was developed by our company, high performance, supply couples of types of gas detection. Low power microprocessor to ensure product performance and stability, real-time monitoring of the concentration of infrared gas. Applicated in petroleum chemical industry, metallurgy, mining, fire, gas, environmental protection, electric power, communication, papermaking, printing and dyeing, food reserves, city water supply, sewage treatment, food, brewing, research, education, national defense and other place.
Features
- Three kind of signal output
- Big screen segment type LCD real-time display gas concentration
- Gas concentration unit optional (such as ppm, mg/m3)
- Instrument status, fault and communication abnormality prompt function
- It can be set high and low alarm point
- Two level sound and light alarm
- Two relay to control peripheral devices
- Round casting stainless steel housing
- Suitable for harsh environments
- Good sealing, anti-corrosion, explosion-proof and anti EMI, RFI function
Technical Specifications
| Sensor Type | Electro-chemical |
| Sampling Way | Diffusion, Pump pipeline |
| Detection Range | 0 ppm to 1 ppm, 25 ppm, 100 ppm, 200 ppm, 1000 ppm, 2000 ppm or customized |
| Accuracy | 0.01 PPM, 0.1 PPM or 1 PPM |
| Response Time | T 90 ≤ 30 S (most) |
| Operating Current | 20 mA to 200 mA |
| Span Drift | ≤± 5% FS/6 h |
| Power Consumption | ≤ 2.0 W |
| Input Power | 12 V DC to 24 V DC |
| Alarm Error | ≤ ± 10% alarm set value |
| Work Humidity | 0% RH to 95% RH (no coagulation) |
| Preheating Time | 1 Min |
| Signal Output | 4 mA to 20 mA, RS485 |
| Sensor Life | See date of sensor |
| Capacity | 0.5 A/125 V AC or 1 A/30 V DC |
| Repeat | ≤±2% FS |
| Zero Drift | ≤±2% FS/6 h |
| Transmission Distance | 4 mA to 20 mA ≤ 100 m, RS4 85 ≤ 1000 m |
| Cable | ≥ RVVP 0.4 in2 x 0.01 in2 (9 mm2 x 0.3 mm2) |
| Material | Cast aluminum/316 stainless steel |
| Pressure Range | 860 hpa to 1060 hpa |
| Operating Temperature | -40 ℉ to 158 ℉ (-40 °C to 70 °C) |
| Dimension | 7.7 in x 7.0 in x 3.5 in (195 mm x 178 mm x 90 mm) |
| Net Weight | 2.65 Ib (1.2kg) |