- Compact Size
- High accuracy
- Direct digital output and programming via RS-232C
- Built in real time clock with "ON/OFF" power control
- Robust titanium housing
- Long-term deployments for up to one year
- Embedded micro-controller
- 2 Mbyte non-volatile flash memory, preventing data loss in case of power failure
- PC programmable measurement mode
- Powered by commercially available lithium batteries
This miniature
electromagnetic current meter provides the user with a maximum in flexibility.
Small in size, the Compact EM records 2D current data virtually anywhere:
in shallow waters, rivers, or confined spaces. This current meter has
no fragile moving part and its Titanium housing will withstand even
the toughest handling. This makes the instrument suitable for operation
in rough conditions, or for deployment with ROVs.
The Compact EM records data in a two-megabyte Flash RAM which stores
up to 179178 data sets of 2D velocity, instrument orientation, temperature
and battery status.
Through Win98/Me/2000/XP software, the instrument can be programmed
with a large variety of sampling strategies (such as interval sampling,
burst sampling or burst averaged sampling) and data can be easily transferred
to a PC.
| Parameters | Current speed | Current direction | Temperature | ||
| Sensor type | 2-axis
electro-magnetic sensor |
Hall
element compass |
Thermistor | ||
| Measuring range | 0 to ±500 cm/s | 0 to 360 ° | -5 to 40 °C | ||
| Resolution | 0.02 cm/s | 0.01 ° | 0.001 °C | ||
| Accuracy | ±1 cm/s or ±2 % | ±2 ° | ±0.05 °C | ||
| Memory type | 2 Mbyte flash memory | ||||
| Memory capacity | 179178 data | ||||
| A/D converter | 16 bits digital conversion | ||||
| Measuring mode | Continuous mode, Burst mode | ||||
| Sampling interval | 0.5 sec, 1 sec, 2 sec,5 sec, 10 sec, 15 sec, 20 sec, 30 sec | ||||
| Burst interval | 1 min to 1440 min | ||||
| Number of samples | 1, 10, 15, 20, 30, 60, 120, 180, 240, 300, 600, 1200 | ||||
| Battery type | Lithium battery C type, 3.9V, 7 Ah | ||||
| Power consumption | 85 mA | ||||
| Housing material | Titanium | ||||
| Weight | 900 g in air, 550 g in water | ||||
| Depth rating | 1000 m | ||||
| Tensile strength | Approx. 2 kN(equivalent to 200 kgs) | ||||
