Cygnus 1 User Manual

Introduction
12
SELECTION OF ULTRASONIC PROBES
The Cygnus 1 ROV Gauge is supplied with a single heavy-duty Ultrasonic Probe, which
comes in a waterproof assembly with the Probe fixed to a cable which connects to the
removable nose-cone of the Gauge.
U Probe-assemblies are not freely interchangeable – the Gauge is preset for optimum
performance with the supplied Probe
Cygnus offers a selection of different Probe-types – the table below shows which Probe to
choose, depending on the application.
L The Deep-Water and Shallow-Water versions of the Gauge are normally supplied with a
5 metre Probe-cable assembly, and the Mini-ROV Lightweight version is normally
supplied with a 0.1 metre cable – other cable-lengths are available on request.
CRYSTAL
DIAMETER
FREQUENCY MEASUREMENT
RANGE
APPLICATION
13 mm
½ inch
2¼ MHz
Red face
3.0 – 250 mm
0.12 – 10 inch
This is the standard probe –
suitable for most applications
19 mm
¾ inch
2¼ MHz
Red face
3.0 – 250 mm
0.12 – 10 inch
Use with castings and other
attenuative materials if the
13mm probe is inadequate –
the larger diameter gives
greater penetration power on
badly corroded or heavily
coated steel. Some metallic
coatings are also highly
attenuative.
13 mm
½ inch
3½ MHz
Orange face
2.0 – 150 mm
0.08 – 6 inch
Suitable for measurement on
thinner sections where
surfaces are relatively rough

Cygnus 1 Specifications

General

Brand	Cygnus
Model	1
Category	Measuring Instruments
Language	English