Starmon Tilt, Rechargeable
Acceleration, tilt (3-D), temperature and depth logger. Durable, long life subsea acceleration and tilt data logger with rechargeable battery. Fast sampling and response. For monitoring behaviour, movements and orientation of subsea gear, cables and underwater vehicles. Suitable for short-term fast sampling or long-term research on a single charge.
- Fast sampling and response
- Robust, durable and accurate
- Long lasting rechargeable battery
- Easy to attach to gear
- Shallow to deep ocean
Fast Sampling and Response
Starmon Tilt can record tilt-acceleration and depth in burst mode at up to 100 measurements per second (100 Hz) and for all sensors at up to 20 measurements per second (20 Hz). Different sampling intervals can be set up within the research period. The temperature sensor has a fast response of 2 seconds.
Application
The Starmon Tilt is applicable for both short and long-term research:
- Movements and orientation of fishing gear like trawls and dredges during surveys
- Pitch and roll of underwater robots and vehicles (AUV, ROV)
- Inclination monitoring of submersible acoustic receivers and mooring lines due to changes in wind and waves
- Analysing shape of geothermal wells or boreholes
- Vibration of subsea cables, recording bursts of acceleration data
Long Lasting Rechargeable Battery
Depending on interval setup, the rechargeable battery can last several years on a single charge. At an interval of 1 min it can last more than 5 years on a single charge. At 1 sec. interval a single charge lasts at least one month. The logger can be recharged 500 times before having to replace the battery. The software has an energy and memory calculator.
Easy to Attach to Gear
Starmon Tilt has an attachment hole through the end cap and two slots for strapping or fastening to subsea gear. For more flexible mounting, holder brackets fitting the slots with one or double plates are ideal for attaching on flat surface and give extra protection.
Viewing Measurements in Real-Time
The software offers a real-time view of measurements while the logger is connected to a computer. This feature is especially helpful to learn about the functionality of the three axis acceleration/tilt sensors when placed at different angles. When doing an online test the measurements can be viewed in real-time in a graph and table.
Shallow to Deep Ocean
The self-contained logger has a robust titanium housing that tolerates extreme conditions. Customers can choose from a range of depth sensor calibrations. Available depth ranges are: 0-50m, 100m, 200m, 500m, 1000m, 2000m, 4000m or 4500m.
Full Ocean Depth Housing Available
A customized housing is available for all ocean depth. This ultra high-pressure resistant titanium housing is without a pressure sensor, therefore only equipped with tilt-acceleration and temperature sensors.
Simple in Use, From Setup to Data Retrieval
The logger and the accompanying items are designed for ease of use throughout the research process, from setting up the recorder, attaching it, to retrieving and analysing the data. The logger is supported by the SeaStar software for Windows and a standard USB cable which are purchased with the first order. With these two accessories the user can set up the logger for measurements and then retrieve the results.
Setting up the Logger for Measurements
To launch the tilt logger for measuring, the end cap of the housing is unscrewed and a USB cable connects directly from the recorder to a computer. In the SeaStar software, the user sets the start time, start date and sampling interval before starting the recorder in measurement mode. The logger synchronizes its internal clock with the date & time on the computer being used.
Placement of the Logger
The logger can be placed horizontally or vertically on the gear. The three axes (X, Y, Z) have a tilt range of +/-90. If placed horizontally the the housing has reference lines that can be used for positioning in a central start-up position for pitch and roll showing around 0°C. The Seastar software offers online viewing of tilt measurements when connected to a computer, which can be helpful to understand more before deployment.
Memory and Battery Life Calculations
The software automatically calculates the battery consumption based on defined interval settings. This makes it easy for the user to decide on a suitable interval setup to fit the study. The date and time when memory fills for the defined interval setup is also displayed. For a chosen study length it is possible to have the software do memory and battery calculations.
Uploading the Data
After recovering the logger device, it is connected via the USB cable to the computer and the recorded data is uploaded to the software. The results are displayed both in graphic and tabular form and the data can be exported to other programs. The time-series data shows each measurement with its own time stamp.
Recharging the Battery
To charge the tilt logger for measuring, the end cap of the housing is unscrewed and a USB cable connects directly from the recorder to a computer. The diode next to the logger‘s USB connector illuminates yellow upon connection. The logger is fully charged when the yellow light is off.
After data retrieval the logger can be restarted or disconnected for later use. Battery life estimation is reported upon connection with the logger but a full recharge is recommended before another deployment. Due to the low energy consumption circuitry design, the battery life is long. However, the use of the logger on a single charge depends on the sampling interval setup.