Specifications for navigation echo-sounder NEL-20K

Navigation echo-sounder NEL-20K

Specifications

Echo-sounder depths range (with different transducers)

Depth scale from 2 till 12

Specified depth range 1-99 m with step 1 m

Instrumental error

up to 100 m 0.1 m

more than 100 m 0.1% from measured depth

for a specified depth 5% from specified depth

Sound velocity adjustment in water 1420-1550 m/s with step 1 m/s

Memory not less than 24 hours

Monitor electroluminescent two-colored PLANAR or touch LCD 12”, 15” or 19”

Outputs/inputs 7, under request up to 22

Interface RS-232/422/485 NMEA-0183

Power supply 220/127/110 V

50/50/60 Hz

Repeaters under request up to 8 mm

Additional equipment

Depth repeater – duplication of echo-sounder and specified depth signaling device indications.

Uninterruptible power supply unit – provides echo-sounder stabilized AC 220 V 50 Hz not less than 15 min.

Data distribution block – distributes data from echo-sounder outputs RS-232C/RS-422 to 16 external users via RS-232C/RS-422.

Hermitisator – hole sealing in vessel’s bottom during transducer replacement by diver.

Testing equipment – this equipment is necessary for echo-sounder instrumental error estimation.

Connection scheme

1. Device f control and indication (DCI)
2. Transceiver device (TRV)
3. Hydro acoustic transducer (HT)
4. Depth repeater P-02

External users RS232/422