# The Measuring Instruments Regulations 2016, Paragraph 7: Maximum permissible error


(1) In the case of a measuring system used to measure a quantity of liquid fuel—
(a) above the minimum measured quantity of the measuring system, the maximum permissible error shall be determined in accordance with the following Table.
Accuracy class of measuring system
0.3
0.5
1.0
1.5
2.5
Column 1
Column 2
Column 3
Column 4
Column 5
Column 6
Quantity
MPE
MPE
MPE
MPE
MPE
Less than 0.1L
+ 4.8mL
-2.4mL
+8mL
-4mL
+16mL
-8mL
+24mL
-12mL
+40mL
-20mL
From 0.1L to ˂ 0.2L
+ 4.8%
-2.4%
+ 8%
-4%
+16%
-8%
+ 24%
-12%
+ 40%
-20%
From 0.2L to ˂ 0.4L
+ 4.8mL
-2.4mL
+ 8mL
-4mL
+ 16mL
-8mL
+ 24mL
-12mL
+ 40mL
-20mL
From 0.4L to ˂ 1L
+ 1.2%
-0.6%
+ 2%
-1%
+ 4%
-2%
+ 6%
-3%
+ 10%
-5%
From 1L to ˂ 2L
+12mL
-6mL
+20mL
-10mL
+40mL
-20mL
+60mL
-30mL
+100mL
-50mL
2L or more
+0.6%
-0.3%
+1%
-0.5%
+2%
-1%
+3%
-1.5%
+5%
-2.5%
(b) equal to the minimum measured quantity of the measuring system, the maximum permissible error shall be determined in accordance with the following Table.
Accuracy class of measuring system
0.3
0.5
1.0
1.5
2.5
Column 1
Column 2
Column 3
Column 4
Column 5
Column 6
Quantity
MPE
MPE
MPE
MPE
MPE
Less than 0.1L
+4.8mL
-2.4mL
+8mL
-4mL
+16mL
-8mL
+24mL
-12mL
+40mL
-20mL
From 0.1L to ˂ 0.2L
+ 4.8%
-2.4%
+8%
-4%
+ 16%
-8%
+24%
-12%
+40%
-20%
From 0.2L to ˂ 0.4L
+ 9.6mL
-4.8mL
+ 16mL
-8mL
+ 32mL
-16mL
+ 48mL
-24mL
+ 80mL
-40mL
From 0.4L to ˂ 1L
+ 2.4%
-1.2%
+ 4%
-2%
+8%
-4%
+ 12%
-6%
+ 20%
-10%
From 1L to ˂ 2L
+24mL
-12mL
+40mL
-20mL
+80mL
-40mL
+120mL
-60mL
+200mL
-100mL
2L or more
+1.2%
-0.6%
+2%
-1%
+4%
-2%
+6%
-3%
+10%
-5%
(2) But the maximum permissible error for a quantity above the minimum measured quantity of the measuring system shall not be less than the maximum permissible error for a quantity equal to the minimum measured quantity.
(3) Where the measuring system falls within an accuracy class of 0.3, 0.5, 1.0, 1.5 or 2.5, it shall, for a quantity set out in column 1 of the relevant Table, operate within the maximum permissible error set out in column 2, 3, 4, 5 or 6 of that Table for that class and that quantity.

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Source: https://www.legislation.gov.uk/uksi/2016/1153/schedule/6/paragraph/7 (the official version)
Page: https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-6/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.