An impactor-inspired sample chamber was constructed and assembled to evaluate sensor performance during exposure to trace analytes, such as explosives and chemical warfare agents. A flexible, virtual pin-grid array (PGA) was created with a series of hardware and software to make electrical connections without need to create prototype, expensive circuits. The sample chamber and Virtual-PGA electronics were characterized and tested using a thermal imager and a custom temperature and relative ...
A liquid delivery system for nebulizers typically used in inductively coupled plasma spectrometry is implemented with active, closed-loop feedback to generate a constant, stable flow rate over extended periods of time. An electronic pressure control unit is coupled with a pressure vessel and flow meter in three separate configurations. The first configuration uses a computer to monitor the flow rate and adjust the pressure based on a PID algorithm. The ...
The purpose of this document is to describe the installation and the operation of the Volume Sensor-Canadian Demonstrator Prototype (CDP). The Volume Sensor (VS) is a prototype fire and smoke detection and situational awareness system developed at the U.S. Naval Research Laboratory (NRL). The VS prototype has been repackaged into a standalone unit with two sensor heads for evaluation by the Canadian Navy. This document is broken into several sections. ...
A range test validation system (RTVS) was developed under the sponsorship of the Defense Threat Reduction Agency as a means for validating point and standoff chemical sensors with releases of chemical agent simulants over a test grid. Data were collected from various sensor systems during test chemical releases at Dugway Proving Ground in 2007 and 2008 and a data fusion analysis conducted. Environmental factors and dissemination techniques significantly affected cloud ...
The use of liquid fuels necessitates methods to assess the quality and suitability of these fuels for their intended use. Traditionally, this is performed through a series of chemical and physical tests. However, in some operational situations, streamlined methods to reliably evaluate fuel quality would offer distinct advantages. The Naval Research Laboratory has been engaged in a research program to explore and develop rapid automated fuel quality surveillance technologies. Chemometric ...
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