Impact Subsea ISD4000 Manuel utilisateur

IMPACT SUBSEA
INNOVATIVE UNDERWATER PRODUCTS www.impactsubsea.com
T. +44 (0) 1224 460 850
Impact Subsea Ltd, Company Number: SC498003, Registered in Scotland, Registered
Office: Unit 10, Castle Street, Castle Road Industrial Estate, Ellon, AB41 9FR, UK
W. www.impactsubsea.com
ISD4000
Depth & Temperature Sensor
With Optional AHRS
Installation & Operation Manual
Revision Number:
2.0
Date
27th June 2022

IMPACT SUBSEA
INNOVATIVE UNDERWATER PRODUCTS www.impactsubsea.com
Document No: 0000.1907 | Version No: 2.0 | 27th June 20221
1.0 Introduction......................................................................................................................................2
2.0 Specification .....................................................................................................................................3
2.1 ISD4000 Overview.........................................................................................................................3
2.2 ISD4000 Dimensions......................................................................................................................3
2.3 Depth, Temperature & AHRS........................................................................................................4
2.4 Communications, Power & Physical.............................................................................................4
3.0 Overview...........................................................................................................................................5
4.0 Installation........................................................................................................................................6
4.1 Location .........................................................................................................................................6
4.1.1 Pressure (For Depth Accuracy)................................................................................................6
4.1.2 Magnetic Disturbers (For Heading Accuracy).........................................................................6
4.1.3 Alignment with Vehicle (For Pitch/Roll Accuracy).................................................................7
4.1.4 Heat Sources (For Temperature Accuracy).............................................................................7
4.2 Mounting.......................................................................................................................................8
4.3 Electrical ........................................................................................................................................9
4.3.1 Connector Pin Out..................................................................................................................9
4.3.2 Power................................................................................................................................... 10
4.3.3 Serial Interface .................................................................................................................... 10
4.3.4 RS232 Wiring ....................................................................................................................... 10
4.3.5 RS485 Wiring ....................................................................................................................... 11
4.3.6 Establishing Communications............................................................................................. 12
4.3.7 Connector Mating................................................................................................................ 12
4.3.8 Connector Cleaning ............................................................................................................. 13
5.0 Operation...................................................................................................................................... 13
5.1 Use With The Impact Subsea Software ......................................................................................13
5.2 Integration With Systems ...........................................................................................................15
5.3 Calibration ...................................................................................................................................16
5.4 Magnetic Calibration...................................................................................................................16
6.0 ASCII Output Strings..................................................................................................................... 24
6.1 Depth ...........................................................................................................................................24
6.2 AHRS ............................................................................................................................................27
7.0 Servicing........................................................................................................................................ 33
8.0 Warranty....................................................................................................................................... 34
9.0 Technical Support......................................................................................................................... 35

IMPACT SUBSEA
INNOVATIVE UNDERWATER PRODUCTS www.impactsubsea.com
Document No: 0000.1907 | Version No: 2.0 | 27th June 20222
Every effort is made to ensure that information within this document is up to date. However, information within this document
is subject to change without notice, in-line with our commitment to continuous product development and improvement.
1.0 Introduction
The ISD4000 sensor provides depth and temperature measurement with exceptional accuracy
and resolution. Optionally, the ISD4000 can also measure Heading, Pitch & Roll.
Suitable for a large range of underwater applications, the ISD4000 can be used with ROVs,
AUVs, Hydro-graphic Survey, Construction, Positioning and any other task where accurate
depth and temperature is required underwater.
The ISD4000 utilises the latest in temperature compensated piezo-resistive depth sensing
technology, to provide an exceptional 0.01% full scale depth measurement accuracy. A highly
accurate RTD sensor is used to provide temperature to 0.01°C accuracy.
Where fitted, the Heading, Pitch and Roll readings are provided from integrated MEMs based
Magnetometers, Accelerometers and Gyroscopes. The MEMs based devices are fused together
to provide highly accurate and stable Heading, Pitch and Roll measurements.
Housed in a compact and lightweight titanium or acetal housing ensures that the ISD4000 is not
only at the forefront of sensor technology; but is built to withstand the most extreme
underwater environments.
ISD4000 Depth & Temperature Sensor

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INNOVATIVE UNDERWATER PRODUCTS www.impactsubsea.com
Document No: 0000.1907 | Version No: 2.0 | 27th June 20223
2.0 Specification
2.1 ISD4000 Overview
2.2 ISD4000 Dimensions
All dimensions are in mm.

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Document No: 0000.1907 | Version No: 2.0 | 27th June 20224
2.3 Depth, Temperature & AHRS
Depth
Pitch & Roll*
Accuracy
± 0.01% Full Scale
(± 0.005% Full Scale
Option)
Pitch
± 90°
Roll
± 180°
Resolution
0.001% Full Scale
Accuracy
0.2° RMS
Range
10, 30, 50, 100, 300,
400 or 600 Bar
Resolution
0.1°
Type
Temperature
Compensated Piezo-
Resistive
Temperature
Accuracy
0.01°C
Resolution
0.001°C
Heading*
Accuracy
± 0.5°
Resolution
0.1°
* Optional
2.4 Communications, Power & Physical
Communications & Power
Physical
Digital
RS232 & RS485
Weight
(Air/Water)
Titanium: 0.42 / 0.28kg
Acetal: 0.20 / 0.10kg
Protocol
4800 to 115200
baud
Depth Rating
Titanium: 6,000 meters
Acetal: 500 meters
Data
Continuous or on
demand
Temperature
Calibrated: -5 to 35°
Operating: -10 to 60°
Storage: -20 to 70°
Data Rate
Up to 100Hz
Connector
Subconn MCBH8M-SS
fitted as standard
Input Voltage
7 to 32V DC
Power
< 40mA @ 24V DC

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Document No: 0000.1907 | Version No: 2.0 | 27th June 20225
3.0 Overview
The ISD4000 is a pressure measurement device – making use of increasing pressure in water to
determine depth. It is important to note that the device is designed to provide depth &
temperature measurements in water, and will not provide accurate readings when operated in
air.
The Heading, Pitch and Roll readings are provided by a Micro-Electro-Mechanical system
(MEMS) based technology. MEMs based Gyros, Accelerometers and Magnetometers are
integrated within the unit.
The temperature reading is provided by a dedicated RTD sensor, located in a probe next to the
pressure sensor.
The ISD4000 can be configured using the supplied Impact Subsea seaView software. seaView
allows all settings to be configured (output strings, communications protocol, baud rate, taring
etc).
In addition to allowing the ISD4000 to be configured, seaView also allows all sensor readings to
be viewed in real time and logged.

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INNOVATIVE UNDERWATER PRODUCTS www.impactsubsea.com
Document No: 0000.1907 | Version No: 2.0 | 27th June 20226
4.0 Installation
4.1 Location
When evaluating the installation location of the ISD4000, there are several factors to consider
to achieve optimum operation from each part of the unit:
–Pressure (Depth Measurement)
–Magnetic Disturbers (Heading)
–Alignment with Vehicle (Pitch/Roll)
–Heat Sources (Temperature Measurement)
4.1.1 Pressure (For Depth Accuracy)
The ISD4000 pressure port must not be blocked or obstructed by any item. Take care
when mounting the unit not to block any of the holes on the pressure port of the
ISD4000.
The unit should be mounted to allow good water flow to the pressure sensor.
Ideally the ISD4000 should be mounted with the pressure sensor end pointing
downwards. This will help to minimise the build-up of sediment on the pressure sensor.
4.1.2 Magnetic Disturbers (For Heading Accuracy)
Where the heading output is to be used, the ISD4000 should be mounted as far as
possible from sources of magnetic interference.
Electrical items which can cause magnetic interference include motors, transformers
and valve packs. Ferrous metals, or any other magnetically active materials will also
have influence on the heading reading. Thus, where possible, the unit should be
installed as far as possible from magnetically active materials.

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Document No: 0000.1907 | Version No: 2.0 | 27th June 20227
4.1.3 Alignment with Vehicle (For Pitch/Roll Accuracy)
When mounting vertically, the ISD4000 should be mounted with the Pressure Sensor
facing downwards (to the seabed) and the indentation in the connector end cap
pointing forwards, in the direction of forward vehicle travel:
When mounting horizontally the ISD4000 should be installed with the indentation in the
connector end cap pointing upwards:
4.1.4 Heat Sources (For Temperature Accuracy)
In order for the ISD4000 to read the ambient temperature of the water, it should not be
installed in close proximity of any heat sources (such as Hydraulic Power Packs).

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Document No: 0000.1907 | Version No: 2.0 | 27th June 20228
4.2 Mounting
The ISD4000 should be mounted using clamps around the mid-section of the body. The unit
has a 38mm recess in the main body to enable a clamp to be tightened securely around the
unit:
Ideally a non-metallic clamp should be used, however in the event that this is not possible,
effort should be made to electrically isolate the clamp from the ISD4000 housing. This can be
achieved by using rubber or plastic strips around the body of the ISD4000.
The ISD4000 has two flats, on either side of the body – these are to enable the unit to sit tightly
against another flat surface if available. These flats also help prevent the unit moving when on
the workbench for testing.

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INNOVATIVE UNDERWATER PRODUCTS www.impactsubsea.com
Document No: 0000.1907 | Version No: 2.0 | 27th June 20229
4.3 Electrical
The ISD4000 is fitted with a SubConn MCBH8M-SS connector as standard. This will mate to a
SubConn MCIL8F connector/cable assembly.
4.3.1 Connector Pin Out
The standard connector pin out is provided below:
Male Connector on ISD4000 Unit
Pin
Function
Mating Wire Colour
1
0VDC
Black
2
7-32VDC
White
3
Not Used
Red
4
Not Used
Green
5
0V Digital
Orange
6
Not Used
Blue
7
RS232 TX & RS485 A+
White/Black
8
RS232 RX & RS485 B-
Red/Black
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