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Model 803 – ROV Current Meter

Designed specifically for use on ROVs and other underwater vehicles, the Model 803 provides real-time relative water velocity information for pilots.

It may be fitted to ROVs to provide actual through the water speeds, or fitted to Tether Management Systems to give the measurement of local flow conditions. Measurements are updated every second and the ROVLog™ software provides a graphic and data display and enables data to be logged to disk.

 

Support

Model 803 Datasheet
Model 803 EM Current Meter Operating Manual
CDU Express Operating Manual
Technical drawings

Software

CDU Express
C3

Technical Specifications

Description

A Model 803 is the result of combining Valeport's proven current sensing
technology with the knowledge and experience of some of the UK's leading
ROV manufacturers and operators. The concept is simple - the Model 803
consists of a Valeport 2 axis electromagnetic flow sensor, with processing
electronics capable of giving a variety of output formats for easy interface to
almost any system.
The sensor should be mounted in clear flow on the ROV or TMS.
When power is applied to the sensor, it measures the water velocity in 2 axes
across the sensor surface. This data is updated at 1 second intervals, to
provide X and Y axis flow information: the X axis is flow across the vehicle,
and the Y axis is flow into the vehicle. This data can either be taken into a
separate logging package, or displayed and logged to PC using the ROVLog
PC software provided.
As standard the Model 803 is supplied as a complete self-contained
instrument, but can optionally be configured with separate sensor and
electronics packages, or even as an OEM system. The Model 803 will appeal
both to operators who wish to improve their existing vehicles, and to
manufacturers who want to offer it as an additional parameter in the sensor
package.

Physical

Sensor:
11.5cm discus EM sensor, made from polyurethane with
titanium mounting
Housing:
Titanium - 4000m depth rating
Dimensions:
76mmØ x 350mm length
Weight:
3.5kg (in water)
Connector:
8 way SubConn BH8M

Performance

Units:
Knots standard, option: m/s.
Range:
±10kts / ±5m/s
Accuracy:
±0.02kts / 0.01m/s + 1% reading
Resolution:
0.01kts / 0.001m/s

Power

7 – 29V DC, 2W nominal.

Output Formats

Default settings are applied for update rate and output format as standard.
Changes can be made to these settings via a Terminal program

Digital:
RS232 or RS485 (internally set). 19200 baud (default), 8
data bits, 1 stop bit, no parity bits.
String format:
kts: sxx.xxsyy.yy
m/s: sx.xxxsy.yyy
Where: s= sign, + or -
xx.xx or x.xxx = speed on X axis
yy.yy or y.yyy = speed on Y axis
Analogue:
-5 to +5V for each channel
0-5V or 0-10V (optional) also available
Update rate:
1Hz default.

Software

System supplied with ROVLog PC software, for display of data from the
instrument. ROVLog is license free.

Shipping

Size:
52 x 46 x 23cm
Weight:
11kg

Ordering

0803002
Model 803 ROV Current Meter in Titanium
4000m rated
Supplied with:
· Pigtail / setup lead
· USB adapter
· Operating manual and transit case
0803EA2
RS485 Communications adapter for PC
Note:
Other configurations are available to include a remote
sensor / electronics pod and analogue output options.
Please contact Valeport for details

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