ASTM D4177 Automatic Sampling of Petroleum and Petroleum Products
ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
11. Automatic Sampling Components
11.1 Extractor - An automatic sample extractor is a device that extracts a sample (grab) from the flowing medium. The extractor may or may not be an integral part of the probe. The sample extractor should extract a consistent volume that is repeatable within +/-5 % over the range of operating conditions and sampling rates.
11.2 Controller - A sample controller is a device which governs the operation of the sample extractor. The sample controller should permit the selection of the sampling frequency.
