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Submarine Cable Survey & Tracking System Model 5930 Mk II

The Tinsley Submarine Cable Survey System is designed for use by divers working in areas where it may not be practical to use an R.O.V.. With a low frequency electroding tone applied to the cable, the system can be used to locate cables buried beneath the seabed and to establish their burial depth.

The system consists of a hand held Sensing Unit (type 5931) that is designed to be easily manoeuvred whilst under water. An audio output to the diver allows the Sensing Unit to be positioned at a point with the highest signal level. This corresponds to a point directly over the cable being surveyed. Once the cable is precisely located the Sensing Unit is placed on the seabed at that point and a measurement of Burial Depth made.

The Sensing Unit is connected to the shipboard Display Unit (Type 5930) via an umbilical cable. The Display Unit uses microprocessor technology to compute the data received from the sensor and to display the information as the burial depth of the cable.

Many special functions are incorporated within the Display Unit. It features a Spectrum Analyser that is used to identify any areas of the frequency range for the Survey System that exhibit a particularly high level of electromagnetic interference. The use of this frequency can then be avoided whilst cable surveying in that particular geographical location.

Digital filtering of the input signal is used to ensure the instrument displays clear and unambiguous results. Electronic tuning enables the system to precisely detect the frequency of the tone applied to the cable.

The Single Sensor probe Model 5932 is used for fast location of cables. It does not give burial depth measurement.

Any standard Electroding Generator operating within the frequency range 16 to 100Hz may be used with the system. Typically the Tinsley Model 5915 or the electroding function of the Tinsley Model 5910 Submarine Cable Test Set could be used to energise the cable.

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Features
Specifications
Ordering Codes

Accurate Cable Burial Depth Measurement
Computer Interface with Touch-screen control
Integral Test Function
Surface and Divers Audio Output of Signal Strength
Dedicated GPS Data Input
Wide Frequency Range
Spectrum Analyser Function
Oscilloscope Function
Rated to 50 metres water depth
Two Probe Inputs

Burial Depth Accuracy: Basic accuracy ±5% of measurement

Burial Depth Range: 0.1 to 3 metres

Temperature Range: In use 0°C to 45°C; Storage -10°C to 60°C

Temperature Coefficient: 0.5% per °C

Dimensions: Triple Sensor Unit – 50cm × 40cm base × 50cm high; Display Unit – 56cm wide × 46cm depth × 24cm high

Weight: Triple Sensor Unit – 7kg in air, 5kg in water; Display Unit – 14.5kg

Sea Cable (5931C1/50m, 5931C1/100m): Length – 50 metres or 100 metres; Diameter – 10.5mm; Colour – Yellow; Mechanical Strength – up to 100kg peak; Connectors – underwater mating, moulded at both ends

Deck Cable (5931C2/50m, 5931C2/100m): Length – 5 metres or 10 metres; Diameter – 10.5mm; Colour – Yellow; Mechanical Strength – up to 100kg peak; Connectors – underwater mating moulded at one end, IP63 type fitted at the other

Bone Conducting Earphone (5931E/2m): Cable Length – 2 metres; Cable Diameter – 5mm; Colour – Black; Mechanical Strength – up to 10kg peak; Connectors – moulded underwater mating

Display Unit 5930 Special Features: Computer Interface – RS232, RS485, USB; GPS Data Input – ship’s GPS data can be input and recorded with burial depth measurements; Data Recording – burial depth information can be stored for later download; Test Oscillator – integral test oscillator for system testing before immersion; Display – daylight-readable TFT colour touchscreen; Diver Audio Mute – audio signal to diver can be muted from the display unit in an emergency

5930

Dual input Surface Display Unit

5931

Triple Sensor Frame for Cable Detection and Burial Depth Measurement

5931E/2m

Bone Conductor Earphone with 2 metre Lead

5931C1/50

50 metre Underwater Umbilical Cable

5931C1/100

100 metre Underwater Umbilical Cable

5931C2/5

5 metre Deck Cable

5931C2/10

10 metre Deck Cable

5932

Single Sensor for Cable Detection

Triple Sensing Unit Model 5931

Gives cable location and burial depth.

Single Sensor Unit Model 5932

For cable location only.

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