logo
DE LEON IMPORT & EXPORT CORPORATION
Date & Time (Manila)

Categories

  • 1
  • 2
  • airtech
  • Educational Technology
  • Engineering and Construction
CONTACT INFO

Address:
ODELCO Building128 Kalayaan Avenue
Central, Quezon City
1100 Philippines

Telephone Numbers:
+632-9242666
+632-9242672

MiniSVS Sound Velocity Sensors

Sound Velocity Measurement 

Each sound velocity measurement is made using a single pulse of sound travelling over a known distance, so is independent of the inherent calculation errors present in all CTDs. Our unique digital signal processing technique virtually eliminates signal noise, and gives almost instantaneous response; the digital measurement is also entirely linear, giving predictable performance under all conditions. 

Range: 1375 - 1900m/s 

Resolution: 0.001m/s 

Accuracy: Dependent on sensor size 

100mm Random noise (point to point) ±0.002m/s 

Max systematic calibration error ±0.013m/s 

Max systematic clock error ±0.002m/s 

Total max theoretical error ±0.017m/s 

50mm Total max theoretical error ±0.019m/s 

25mm Total max theoretical error ±0.020m/s 

Acoustic Frequency: 2.5MHz 

Sample Rate: Selectable, dependent on configuration 

 Rate 

SV 

SV+P 

SV+T 

Single Sample 

1Hz 

2Hz 

4Hz 

8Hz 

16Hz 

32Hz 

60Hz 

Optional Sensors 

The miniSVS may be optionally supplied with either a pressure or temperature sensor (but not both). Data is sampled at the rates shown above

 Sensor 

Pressure 

Temperature 

Type 

Strain Gauge 

PRT 

Range 

5, 10, 50, 100 or 600 Bar 

-5°C to +35°C 

Resolution 

0.001% range 

0.001°C 

Accuracy 

±0.05% range 

±0.01°C 

Data Output 

Unit has RS232 & RS485 output, selected by command code. RS232 data may be taken directly into a PC over cables up to 200m long, whereas RS485 is suitable for longer cables (up to 1000m) and allows for multiple addressed units on a single cable. 

Baud Rate: 2400 - 115200 (NB. Low baud rates may limit data rate) 

Protocol: 8 data bits, 1 stop bit, No parity, No flow control 

Electrical 

Voltage: 8 - 30vDC 

Power: 0.25W (SV only), 0.35W (SV + Pressure) 

Connector: Subconn MCBH6F (alternatives on request) 

Data Format 

Examples of data formats are: 

<space>{sound_velocity}<cr><lf> 

<space>{pressure}<space>{sound_velocity}<cr><lf> 

<space>{temperature}<space>{sound_velocity}<cr><lf> 

SV: Choose from mm/s (1510123), m/s to 3 decimal places (1510.123), or m/s to 2 decimal places (1510.12) 

Pressure: If fitted, pressure is always output in dBar with 5 digits, with a decimal point, including leading zeroes if necessary. Position of the point is dependent on sensor range, e.g. 

50dBar 47.123 

100dBar 047.12 

1000dBar 0047.1 

Temperature: If fitted, temperature is output as a 5 digit number with 3 decimal places and leading zeroes, signed if negative, e.g. 21.456 

02.298 

-03.174 

Physical 

Please refer to drawing on reverse for detailed dimensions. 

Depth Rating: 6000m (Titanium), 500m (acetal) 

Weight: 1kg (housed type) 

Housing & Bulkhead: Titanium or acetal, as selected 

Transducer Window: Polycarbonate 

Sensor Legs: Carbon Composite 

Reflector Plate: Titanium. 

Ordering 

All systems supplied with operating manual and carry case. OEM units come with a test lead, housed units with a 0.5m pigtail. 

 Configuration 

100mm 

50mm 

25mm 

Titanium Housed 

0652004 

0652005 

0652006 

Acetal Housed 

0652045 

0652046 

0652047 

Bulkhead OEM 

0652001 

0652002 

0652003 

Remote OEM 

0652007 

0652008 

0652009 

0652010 Spare 50cm Pigtail 

0652013 Pressure sensor option (specify range) 

0652028 Temperature sensor option