![]() To comply with DNV Offshore Standard 402, a digital interface is used between the sensor and the SDA. The SDA ROC sensor is attached to a habitation chamber, hyperbaric lifeboat or diving bell. The SDA uses the readings to calculate the ROC value which it then compares against its pre-set alarm thresholds. It does this by sampling readings from a depth sensor and applying an algorithm to smooth the effects of any sudden changes. The SDA ROC monitors the pressure of an occupied dive chamber and triggers an alarm if the rate of change is too high. The monitor provides alarms that are based not on the depth level but on the rate at which the depth is changing. If the ROC is too high there is an increased risk of divers suffering the bends. To ensure diver safety it is essential to monitor and control the rate of change (ROC) of pressure to avoid hazardous rates of decompression. The SDA ROC is used on some of the world’s most advanced diving systems including a new build vessel for the BP Exploration Shah Deniz II project in the Caspian Sea. Both the SDA CO and the optional flow panel can be provided as either rack or panel mount. The SDA CO can be located in sat/dive control or at the compressor. It could also be present in the delivered gas and is metabolized by the divers so is produced in the chamber during operations. The SDA CO replaces the obsolete Analox 3000 and is fully retrofittable as a direct replacement.ĭiving system classification societies and industry bodies such as IMCA require/suggest that carbon monoxide levels are maintained at very low levels in a dive system as carbon monoxide is highly toxic.Ĭarbon monoxide (CO) can enter the diving system through an air compressor or a gas transfer compressor. The SDA CO provides audio/visual alarms, optional data-logging and 4-20mA/relay outputs. The alarm set points and calibration can be achieved using the front panel user interface. These results are shown on a full color display. The gas monitor reads results from a state-of-the-art, long-life digital electrochemical sensor. The SDA CO monitor provides a full color display of a carbon monoxide (CO) reading and is fast and accurate – designed for commercial diving in mind. The SDA O2 provides audio/visual alarms, optional data-logging and 4-20mA/relay outputs. The unit monitors the chamber’s internal atmosphere by the use of external sensors. Information is communicated via Ethernet to the SDA O2 display to calculate a partial pressure readout. ![]() This will allow the end user to read the levels of oxygen (O2) in either parameter without having to carry out any conversion calculations.Ī pressure sensor is required for the SDA O2 to enable the display to be presented in partial pressure (mbar O2), this must take a reading from the same location as the gas measurement. The dual SDA display has the ability to display oxygen (O2) readings in both partial pressure (mbar O2) and as percent volume (%O2). It is designed to be highly modular and flexible so it can be easily integrated into custom atmospheric monitoring solutions. The dual SDA O2 is a panel/rack mountable oxygen monitor with audio/visual alarms which comprises of an SDA monitor and a MEC sensor module, including the oxygen (O2) cell. The SDA dual oxygen (O2) monitor measures oxygen (O2) readings in both partial pressure (mbar O2) and as percent volume (%O2). Both the SDA O2 and the optional flow panel can be provided as either rack or panel mount. We offer an optional flow panel to go alongside the SDA O2 which provides fine control after the sample has been reduced from the chamber. ![]() The SDA O2 is normally located in sat/dive control and the sensors can be either located at the panel or inside the chamber or diving bell. The accuracies supplied by the SDA O2 are compliant with DNV, IMCA, Lloyds, ABS, and ADCi requirements/guidelines. ![]() Maintaining a comfortable and safe chamber environment is vital to achieving a successful diving operation. The SDA O2 oxygen monitor replaces the now obsolete Analox 1000 and is fully retrofittable as a direct replacement. The monitor interfaces with our state of the art digital MEC sensor. The monitor provides a full-color display of the oxygen (O2) reading taken from an electrochemical sensor. ![]()
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