© 2018 Valeport Ltd
Specifications
Page 7
Connection:
Standard is SubConn type MCBH6F titanium
Alternatives may be supplied on request
Wiring Information is in Section 4
Output:
Units are fitted with both RS232 and half-duplex RS485 communications as standard, selected by pin
choice on the output connector. Protocol is 8 data bits, 1 stop bit, no parity, and no flow control.
Baud rate is factory set to 19200. User may choose between 2400, 4800, 9600, 19200, 38400, 57600,
115200. (Note that fast data rates may not be possible with low baud rates). Continuous output at 1,
2, 4 or 8Hz
Performance:
Sensor
Sound Velocity
Range
1375 – 1900m/s
Accuracy
±0.02m/s
Resolution
0.001m/s
Frequency
2.5 MHz
Pressure
Range
10, 20, 30, 50, 100, 200 or 300Bar
Accuracy
±0.01% range
Resolution
0.001% range
Temperature
Range
-5 to +35°C
Accuracy
±0.01°C
Resolution
0.001°C
Certain features of the sensors used in the “mini” range are designed specifically to enable high
quality data to be delivered:
Carbon Composite Rods:
The carbon composite material used for the sensor spacer rods has been specifically selected to
provide 3 features:
a) Excellent corrosion resistance
b) Very high strength
c) Virtually zero coefficient of thermal expansion
This last point is particularly important; accurate sound velocity measurement relies on measuring
the time taken for a pulse of sound to travel a known distance. The material selected does not
measurably expand over the operating temperatures of the instrument, ensuring the highest possible
accuracy at all times.
Digital Sampling Technique:
