Description
Overview
GAOTek ultrasonic wind speed and direction sensor is specially designed for the tunnel application. It’s installed on the tunnel wall and providing real-time tunnel wind data to total control room, as a basic basis for ventilation and operation. At the same time, the analog and digital signals output from sensor can be connected to the PLC in the nearby sub-control room and then to the general control room through optical fiber.
Features
- Cast aluminum body, anodized surface for harsh environments
- Diverse sampling area can truly reflect the air flow rate in tunnel
- Ultrasonic measurement free from influence of ambient temperature
- Non-contact detection, no moving parts, low failure rate
Technical Specifications
| Principle | Ultrasonic technology |
| Installation | Wall of tunnel on one-side |
| Range | Wind speed – 30 m/s to 30 m/s |
| Accuracy | Wind speed ± 0.1 m/s |
| Average Time | 0.1 s to 60 min adjustable |
| Relay Output | 2 ways dry-contact relay output |
| Digital Interface | RS 232, RS 485 |
| Analog Output | 4 mA to 20 mA output (load < 500 Ω) |
| Power Supply | 220 V AC ± 10 %,50 Hz (or) 60 Hz |
| Protection Grade | IP 66 |