Impact Subsea provided its advanced sensor technologies, including the ISD4000 depth sensors and ISA500 altimeters to support Zupt’s subsea operations.
ISD4000 Depth Sensor & ISA500 Altimeter
Zupt required dependable depth and altitude data to execute demanding subsea tasks, including template positioning and jumper/spool metrology, with high precision.
To meet these requirements, Zupt needed rugged sensor solutions capable of delivering accurate measurements in difficult subsea environments.
By integrating the Impact Subsea ISD4000 depth sensors, Zupt achieved highly accurate pressure readings for reliable depth tracking. The addition of the ISA500 altimeter enabled precise underwater distance measurement.
Zupt has been engaged to supply and operate the sensor suite used for monitoring a subsea template over 30 meters in size. This template plays a critical role in the placement of large-diameter monopile foundations on the seabed.
Features & Benefits
- ±0.01% FS depth – Optional survey-grade depth accuracy of 0.005% FS*
- ±0.1°C temperature accuracy – Optional high-accuracy 0.05°C* temperature measurement
- Integrated AHRS* – Delivers magnetic heading within ±1°, pitch and roll accuracy to 0.2°
- No maintenance – Non-blocking pressure port design
- Durable construction – Available in titanium or acetal for extended service life
- Device emulation – Compatible with and replaces a wide range of existing equipment
Subsea Template Positioning
Mounted on hydraulically adjustable legs, the template’s main structure has a fluctuating altitude relative to the seabed. The installed depth sensors and altimeters provide continuous monitoring of both depth and altitude, supporting accurate positioning throughout operations.
Aidan Thirsk, Vice President, Commercial, Zupt LLC, commented, “We’re very satisfied with the quality of Impact Subsea sensors, they’ve never let us down.”
