# Meters (Certification) Regulations (Northern Ireland) 1998, Regulation 10: Duration of certification

Extent: N.I.

A meter certified or deemed to be certified for the purpose of the Order shall cease to be so certified or deemed to be so certified—
(a) if the approval of the pattern or construction of that meter is revoked;
(b) f it is or becomes installed in a manner which is not an approved manner of installation;
(c) if any alteration is made to the meter;
(d) if the meter ceases to operate within the permitted margins of error; or
(e) at the expiry of its certification period.
whichever occurs first. whichever occurs first.

---
Source: https://www.legislation.gov.uk/nisr/1998/444/regulation/10 (the official version)
Page: https://openlegislation.uk/meters-certification-regulations-northern-ireland-1998/regulation-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.