Доплеровский лаг LINGLU DS100
DS100 Doppler lag uses the Doppler effect to measure the speed and distance traveled by a ship relative to the water. The device is equipped with eight-inch LCD display, which displays the longitudinal speed (forward/backward), distance traveled, and total mileage. With advanced digital technology, high accuracy and reliability, and a simple and intuitive interface, the DS100 provides stable performance in a variety of environments.
Main Features
- Speed measurement using Doppler frequency shift.
- Speed display in numeric and analog formats with a range of -10.0 to +40.0 knots.
- Track your current and total distance with accuracy up to 0.01 nautical miles (NM).
- User-friendly interface and a clear LCD display that can be read from up to 2 meters away.
- Reliable components that are resistant to the marine environment.
Factors affecting accuracy
- Weather conditions: Stormy sea conditions (6 points or higher).
- Sensor location: Must not be placed near propellers, thrusters, or other interfering equipment.
- Water depth: The minimum depth under the keel is 3 meters.
- Environmental factors: Water temperature and salinity, speed of sound.
- Roll and trim of the vessel: Roll greater than ±10° and trim greater than ±5°.
System composition and installation
| Component | Model | Function | Degree of protection | Installation location |
|---|---|---|---|---|
| Display | DS101 | Speed and distance display; management | IP23 | Bridge |
| The controller | DS102 | Signal reception, calculation, and data transmission | IP23 | Bridge |
| Transmitter | DS103 | Converting an ultrasound signal to data | IP56 | At a distance of up to 20 m from the sensor |
| Sensor | DS104 | Transmission/reception of ultrasonic waves | IP68 | Bottom of the vessel |
| Tank | DS106 | Replacing the sensor on the slipway | — | — |
| Gate valve | DS107 | Replacing the sensor in water | — | — |
Technical specifications
| Parameter | Meaning |
|---|---|
| Operating temperature | -15 ~ +55 °C (complies with IEC60945 standard) |
| Humidity | 93% at 40 °C |
| Depth under the keel | More than 3 m |
| Power supply | AC 110/220 V, 50/60 Hz |
| Power consumption | 50 W |
| Operating frequency | 1 MHz |
| Speed range | -10.0 ~ +40.0 knots (-18.4 ~ +73.6 km / h) |
| Speed measurement accuracy | 2% or 0.2 nodes, depending on the larger value |
| Accuracy of distance measurement | 2% or 0.2 NM, depending on the larger value |
Data entry and output
| Interfaces | Data type |
|---|---|
| GPS, ECDIS, VDR, Repeaters | NMEA0183 (VTG, VBW, VLW) |
| Radar, alarm unit | Switching signals DC 30 V, 2 A |
