background image

 

Standard

 

STD 420-0003

  

 

Volvo Group 

 

Version 

Page

11 

 
 

6.2.4.3  Calculating the fogging value G 

To calculate G in mg, the value of Gj is calculated for each glass plate by using: 
G

j

 = G

1

 – G

0

 

where 

G

is fogging mass of condensation on each piece of aluminium foil 

G

is the mass of the aluminium foil after the test, in mg 

G

is the mass of the aluminium foil before the test, in mg 

The fogging value G is the mean value of G

j

. G is reported with an accuracy of 0,01 mg. 

7 Report 

The report shall contain: 

Reference to this standard 

Reference to mehod used (method F evaluation of fogging using a glossmeter or method G gravimetrical 
method, evaluation of fogging using a balance) 

Identification of test pieces 

Date of production 

Type of test pieces 

Thickness of the test pieces 

Date of test 

Person responsible for testing 

Any deviations from standard 

Results: mean value and individual values 

Number of test pieces tested 

Any particular observations. 

8 Temperature 

options 

The temperature shall be stated in the documentation referring to this standard. 

 

Содержание STD 420-0003

Страница 1: ...neral 4 2 Thermostatically controlled bath 4 3 Cooling plates 4 4 Flat bottomed beakers 4 5 Metal rings 4 6 Sealing rings 4 7 Float glass plates 4 8 Filter paper 4 9 Aluminium foil 4 10 Reflector mete...

Страница 2: ...e it is the difference expressed in mg between the masses of the aluminium foil before and after testing 3 Materials 3 1 Thermal transfer fluid for the thermostatically controlled bath The fluid shal...

Страница 3: ...ooling plates designed to be placed on the glass plates to keep them cool The cooling plates shall be hollow and made of corrosion resistant metal with the side facing the glass plate made of aluminiu...

Страница 4: ...uminium foil in order to decrease the risk of their edges being uneven and damaged Great care needs to be excercised so that the aluminium foil does not get contaminated Use lint free cotton gloves or...

Страница 5: ...kaline dishwasher detergents 4 13 Balance with scale divisions of 0 01 mg 4 14 Glass plate rack 4 15 Phosphorpentoxide and silica gel 4 16 Stamping apparatus for circular test pieces 80 1 mm 4 17 Glov...

Страница 6: ...ces containing natural materials 168 h 2 h Coated fabrics 48 h 2 h Other materials 24 h 2 h 6 1 2 Cleaning 6 1 2 1 Cleaning with a dishwasher Wash the sealing rings beakers and metal rings with glass...

Страница 7: ...pe with paper If the beakers have contained greasy products or if the specimens have become damaged during the test leaving a deposit on the bottom of the beakers the beakers shall be washed in aceton...

Страница 8: ...the glass plate is placed on the sealing ring The beakers with test pieces are placed in the bath that has reached the prescribed temperature On top of the glass plate a filter paper is placed follow...

Страница 9: ...culated using the formula 1 4 4 1 2 i j i j F F s where Fi is the fogging value of each point of measuring in 4 is the number of test points on the glass plate This standard deviation indicates the ho...

Страница 10: ...DP Note It is very important not to moisten the walls of the beaker with the DIDP when handling the beaker as this will lead to a larger area with DIDP and a higher test result 6 2 4 Procedure 6 2 4 1...

Страница 11: ...is reported with an accuracy of 0 01 mg 7 Report The report shall contain Reference to this standard Reference to mehod used method F evaluation of fogging using a glossmeter or method G gravimetrica...

Отзывы: