1. Product Overview
The SGA-700D is an integrated pump-suction intelligent gas sensor module launched in 2018, adopting left-right horizontal air inlet layout. The built-in air pump performs active gas extraction, and the horizontally optimized air channel is airtight and smooth. The module supports 5-pin and 7-pin dual pin selection, inherits ppb-level high detection precision and factory pre-calibration function. It provides standard dual signals and optional 4-20mA current output. Designed for horizontal installation and lateral sampling, it is widely applied in horizontal industrial pipelines, side-mounted detection equipment and mobile gas monitoring devices.
2. Sensing Technology & Self-Cleaning System
The module uses built-in air pump for active gas sampling, and configures electrochemical, catalytic combustion, infrared, PID and other sensing technologies according to different monitored gases. Gas enters the sampling chamber through left-right horizontal air channels. Internal signal processing and environmental compensation circuits ensure stable and accurate measurement. There is no active self-cleaning system. The fully sealed shell and closed air channel block dust and foreign matter. The streamlined channel reduces dirt accumulation, and only simple regular cleaning is required during long-term operation.
3. Key Features & Competitive Advantages
Built-in air pump for active gas suction, applicable to non-diffusion and low-airflow sampling environments. The left-right horizontal air inlet is specially designed for horizontal installation and lateral gas collection, matching most pipeline equipment layout. The air channel is tightly sealed without air leakage to ensure sampling accuracy. 5-pin and 7-pin dual pin options meet different wiring and device matching demands. It delivers ppb-level high precision to detect trace gas concentration changes. Standard dual signals and optional 4-20mA output realize seamless connection with various industrial control systems. Factory pre-calibration achieves plug and play and reduces user maintenance work. Compact horizontal structure is easy for side mounting. IP55 protection and intrinsically safe design adapt to harsh industrial working conditions.
4. Technical Specifications
| Parameter |
Specification |
| Product Type |
Integrated Pump-suction Type (Left-Right Ventilation) |
| Release Year |
2018 |
| Pin Count |
5 pins / 7 pins (Optional) |
| Diameter |
33.5 mm |
| Height |
45 mm |
| Pin Length |
3.5 mm (7-pin) / 5.5 mm (5-pin) |
| Pin Diameter |
1 mm (7-pin) / 1.5 mm (5-pin) |
| Surface Treatment |
Electroplate |
| Weight |
45 g |
| Detectable Gases |
Over 1000 kinds of combustible, toxic, volatile gases |
| Detection Principle |
Electrochemical, Catalytic Combustion, Infrared, PID, Semiconductor |
| Working Voltage |
5V ± 1% |
| Power Consumption |
Electrochemical: < 50 mA; Others: < 100 mA |
| Accuracy |
≤ ±3% F.S. |
| Resolution |
ppb-level |
| Response Time (T90) |
≤ 30 s |
| Repeatability |
≤ ±2% F.S. |
| Linear Error |
≤ ±2% F.S. |
| Zero Drift |
≤ ±1% F.S./Year |
| Working Temperature |
-20 °C ~ +50 °C |
| Working Humidity |
≤ 95% RH, non-condensing |
| Working Pressure |
86 ~ 106 KPa |
| Preheating Time |
30 s |
| Communication Parameter |
9600 bps, 8 data bits, 1 stop bit, no parity |
| Shell Material |
Aluminum Alloy |
| Protection Class |
IP55 |
| Explosion-proof Grade |
Intrinsically Safe |
| Standard Output |
0-5V Voltage + TTL Digital Signal |
| Optional Output |
24V 4-20mA Current Signal |
5. Applications
Applied to horizontally arranged industrial pipeline monitoring, side-mounted flue gas and waste gas detection devices, environmental online monitoring systems, chemical plant pipeline gas safety monitoring, UAV and mobile inspection gas equipment and municipal environmental monitoring stations.
