• ASTM D7940-14

ASTM D7940-14

Standard Practice for Analysis of Liquefied Natural Gas (LNG) by Fiber-Coupled Raman Spectroscopy

ASTM International, 06/01/2014

Publisher: ASTM

File Format: PDF

$32.00$64.00


Published:01/06/2014

Pages:9

File Size:1 file , 320 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 This standard practice is for both on-line and laboratory instrument-based determination of composition for liquefied natural gas (LNG) using Raman spectroscopy. The basic methodology can also be applied to other light hydrocarbon mixtures in either liquid or gaseous states, if the needs of the application are met, although the rest of this practice refers specifically to liquids. From the composition, gas properties such as heating value and the Wobbe index may be calculated. The components commonly determined according to this test method are CH4, C2H6, C3H8, i-C4H10, n-C4H10, iC5H12, n-C5H12, neo-C5H12, N2, O2. The applicable range of this standard is 200 ppmv to 100 mol %. Components heavier than C5 are not measured as part of this practice.

Note 1: Raman spectroscopy does not directly quantify the component percentages of noble gases, however, inerts can be calculated indirectly by subtracting the sum of the other species from 100 %.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

More ASTM standard pdf

ASTM B934-04a

ASTM B934-04a

Standard Test Method for Effective Case Depth of Ferrous Powder Metallurgy (P/M) Parts Using Microindentation Hardness Measurements

$26.00 $52.00

ASTM B242-99(2004)e1

ASTM B242-99(2004)e1

Standard Guide for Preparation of High-Carbon Steel for Electroplating

$26.00 $52.00

ASTM C91-03

ASTM C91-03

Standard Specification for Masonry Cement

$26.00 $52.00

ASTM A927/A927M-04

ASTM A927/A927M-04

Standard Test Method for Alternating-Current Magnetic Properties of Toroidal Core Specimens Using the Voltmeter-Ammeter-Wattmeter Method

$30.00 $60.00