Bottom Pressure Gauges

ISD4000 Range of Survey Grade Depth Sensors

Underwater Depth & Temperature Sensor with optional integrated Pitch, Roll & Heading

The ISD4000 is a compact, survey grade Depth & Temperature Sensor. Optionally, the unit can also be provided with an integrated Attitude and Heading Reference System (AHRS). This provides highly stable Heading, Pitch and Roll readings.

Impact Subsea

Aberdeen, GB

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Description

The ISD4000 is a compact, survey grade Depth & Temperature Sensor.

Optionally, the unit can also be provided with an integrated Attitude and Heading Reference System (AHRS). This provides highly stable Heading, Pitch and Roll readings.

Depth

A temperature compensated piezo-resistive pressure sensor is used to determine Depth to 0.01% Full Scale accuracy. Optional 0.005% FS

Available in a variety of pressure ranges (10, 30, 50, 100, 300, 400 & 600 Bar) ensures that the highest level of accuracy can be achieved for any depth of application.

Depth can be provided at any rate up to 100 Hz – ideal for precision control and monitoring applications.

Temperature

A Resistance Temperature Detector (RTD) probe provides temperature to 0.1°C Temperature Accuracy, Optional 0.01°C

The RTD is located directly inside the temperature probe, placing it exceptionally close to the water. This enables a very high accuracy temperature reading to be obtained, with exceptionally low latency.

Attitude & Heading Reference System (AHRS)

Optionally available on the ISD4000 is an integrated Attitude & Heading Reference System (AHRS) providing Heading, Pitch & Roll. The AHRS is based on Micro-Electrical-Mechanical-System (MEMS) technology. Within the ISD4000 there are three MEMS based Gyros, Accelerometers & Magnetometers. The outputs from each of these MEMS devices are fused together, providing highly stable Heading, Pitch & Roll. The Heading is highly resilient against temporary magnetic interferes. This is aided by a soft and hard iron calibration feature once the unit has been installed on the ROV, AUV or other underwater system.

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Specifications

General: Year of initial development

2016

Weight in air [kg]

0.42

Length [m]

0.08

Width [m]

0.047

Height [m]

0.047

Max depth [m]

8000

Battery type

N/A

External body material

Titanium or Delrin

Data recording and retrieval: Type of data cable for direct access

Type of telecommunication for remote access

Max. distance for remote access [m]

1200

Connector

Subcon MCBH8M-SS

Communication protocol

RS232 & RS485

Data format

RS232

Filtering applied

N

Direct on site data access

N

Direct remote data access

Y

Data characteristics: Depth resolution [%FS]

0.001

Depth uncertainty [%FS]

0.01

Time resolution [s]

0.01

Min. measurement interval [s]

0.01

Sensor: Type of pressure sensor

Temperature Compensated Piezo-Resistive

Other additional sensors

Temperature, AHRS

Additional air pressure sensor

N