Electromagnetic Log
EML500
This type is suitable for general merchant vessels, and accepts both flush-mountable and dual-axis sensors.
EML500 Electromagnetic Log
Features
- A preamplifier is built into the sensor for stable and long-distance transmission (max.300m long) of the current signal.
- The EML500 can receive a backup signal(NMEA-0183) from external speed sensors such as a GPS receiver.
- A dual-axis sensor (optional) measures a ship's transverse speed as well as its longitudinal speed.
Specifications
| Measurement Range | Speed | -4 to 20 kt -5 to 25 kt -7 to 35 kt -8 to 40 kt -10 to 50 kt -13 to 65 kt |
|
| Distance | 0 to 9999.99 nm | ||
| Direction | 0 to 359 deg. (For dual-axis) | ||
Accuracy |
Speed | ±0.2 kt or 1% of reading whichever larger | |
| Distance | ±0.05 nm/h or ±1% whichever larger | ||
| Direction | ±2.5 deg. (For dual-axis) | ||
| Power Supply | 100/220V AC 50/60Hz single-phase | ||
| Signal Inputs | NMEA-0183 (For back up signals from external speed sensors such as GPS) |
1 circuit | |
| Signal Outputs | Speed | Voltage: 0 to 5V DC or 1 to 5V DC | 2 circuits |
| Current: 0 to 20mA or 4 to 20mA | 4 circuits | ||
| Distance (Pulse) | 200 P/nm photo-coupler output, 5.5V, 5mA | 8 circuits | |
| 200 P/nm contact output, 30V, 1A, 100ms ON width | 2 circuits | ||
| Speed alarm | Contact output NC or NO, 30V DC, 1A | 2 circuits | |
| Digital signal | NMEA-0183 (Longitudinal speed and transverse speed) |
2 circuits | |
| Environmental | Ambient temperature |
-15 to +55 deg.C (Operating) -20 to +60 deg.C (Not operating) |
|
| Humidity | 10 to 95%rh | ||
| Water-pressure | Max. 0.5 MPa (At bottom valve and sensor) | ||