WORLD TRADE  
ORGANIZATION   
G/TBT/N/BWA/13 
14 May 2012  
 (12-2588) 
Committee on Technical Barriers to Trade Original:   English 
  
 
NOTIFICATION 
 
The following notification is being circ ulated in accordance with Article 10.6 
 
1. Notifying Member:  BOTSWANA  
If applicable, name of local governme nt involved (Article 3.2 and 7.2):     
2. Agency responsible:  Botswana WTO-TBT Enquiry  Point 
Name and address (including telephone and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above :   
Botswana Bureau of Standards Information Centre 
Private Bag B0 48 Gaborone Botswana. Tel.:  (+267) 3903200 
Fax:  (+267)3903120 
Toll Free Number:  (0800 600 900) E-mail:  infoc@hq.bobstandards.bw  
3. Notified under Article 2.9.2 [X], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other:   
4. Products covered (HS or CCCN where applicable, otherwise national tariff heading. 
ICS numbers may be provided in addition, where applicable):  Measurement of water 
flow in fully charged closed c onduits - Meters for cold potable water and hot water - Part 1: 
Specifications (ICS  91.140.60) 
5. Title, number of pages and langu age(s) of the notified document:  Measurement of water 
flow in fully charged closed c onduits - Meters for cold potable water and hot water — Part 1: 
Specifications (42 Pages in English) G/TBT/N/BWA/13 
Page 2  
 
  6. Description of content:  This part of ISO 4064 specif ies terminolo gy, technical 
characteristics, metrological characteristics and pressure loss requirements for cold potable 
water and hot water meters. It applies to water meters that can withstand maximum admissible working pressures (MAP) W 1 MPa1 ) (0,6 MPa for meters for use with pipe 
nominal diameters, DN W 500 mm) and a maximum admissible te mperature, MAT, for cold 
potable water meters of 30 ºC and for hot water meters up to 180 ºC, depending on class.  
This part of ISO 4064 also applies to water me ters, based on electrical or electronic principles 
and to water meters based on mech anical principles incorporati ng electronic devices, used to 
meter the actual volume flow of cold potable wate r and hot water. It also applies to electronic 
ancillary devices. Generally ancillary devices are optional. 
The specifications of this part  of ISO 4064 apply to water mete rs, irrespective of technology, 
defined as integrating measuri ng instruments continuously de termining the volume of water 
flowing through them. 
NOTE National regulations may apply in the countr y of use. These will take precedence over 
the provisions of this part of ISO 4064. 
7. Objective and rationale, including the na ture of urgent problems where applicable:  
Consumer protection  
8. Relevant documents:    
1. ISO 3:1973, Preferred numbers — Series of preferred numbers 
2. ISO 228-1, Pipe threads wh ere pressure-tight joints ar e not made on the threads — 
 Part 1: Dimensions, tolerances and designation 
3. ISO 4064-3:2005, Measurement of water fl ow in fully charged closed conduits — 
 Meters for cold potable wa ter and hot water — Part 3: Test methods and equipment 
4. ISO 6817 Measurement of conductive liqui d flow in closed conduits — Method 
using  electromagnetic flowmeters 5. ISO 7005-2, Metallic flanges — Part 2: Cast iron flanges 
6. ISO 7005-3, Metallic flanges — Part 3: Copper alloy and composite flanges 
7. OIML D 11:1994, General requirement s for electronic measuring instruments 
8. OIML V 1:2000, International vocabular y of terms in legal metrology (VIML) 
9. OIML V 2: 1993, International vocabulary of basic and general terms in metrology 
 (VIM) 
9. Proposed date of adoption:   
Proposed date of entry into force:    To be determined 
10. Final date for comments:  60 days from date of notification   G/TBT/N/BWA/13 
 Page 3 
 
 
  11. Text available from:  National enquiry point [X], or address, telephone and fax 
numbers, e-mail and web-site addres ses, if available of the other body:    
Botswana Bureau of Standards Information Centre 
Private Bag B0 48 Gaborone Botswana. 
Tel.:  (+267) 3903200 
Fax:  (+267)3903120 Toll Free Number:  (0800 600 900)  Email:  infoc@hq.bobstandards.bw