Automated syringe sampler
Abstract
A number of sampling services are disposed in a rack which slides into a housing. In response to a signal from an antenna, the circutry elements are activated which provide power individually, collectively, or selectively to a servomechanism thereby moving an actuator arm and the attached jawed bracket supporting an evaculated tube towards a stationary needle. One open end of the needle extends through the side wall of a conduit to the interior and the other open end is maintained within the protective sleeve, supported by a bifurcated bracket. A septum in punctured by the end of the needle within the sleeve and a sample of the fluid medium in the conduit flows through the needle and is transferred to a tube. The signal to the servo is then reversed and the actuator arm moves the tube back to its original position permitting the septum to expand and seal the hole made by the needle. The jawed bracket is attached by pivot to the actuator to facilitate tube replacement.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- June 1981
- Bibcode:
- 1981nasa.reptS....P
- Keywords:
-
- Air Sampling;
- Pollution Monitoring;
- Racks (Frames);
- Samplers;
- Servomechanisms;
- Syringes;
- Air Pollution;
- Patents;
- Portable Equipment;
- Pumps;
- Water Pollution;
- Instrumentation and Photography