WORLD TRADE  
ORGANIZATION  G/TBT/N/SLV/131 
1 September 2009 
 (09-4081) 
Committee on Technical Barriers to Trade Original:   Spanish 
  
NOTIFICATION 
 
The following notification is being circ ulated in accordance with Article 10.6. 
 
1. Member to Agreement notifying:  EL SALVADOR
 
If applicable, name of local government involved (Articles 3.2 and 7.2):   
2. Agency responsible:   Consejo Nacional de Ciencia y Tecnología , CONACYT (National 
Science and Technology Council) 
Name and address (including telephone and fax numbers and e-mail and website 
addresses, if available) of  agency or authority designated to handle comments 
regarding the notification shall be  indicated if different from above:  
Colonia Medica 
Avenida Dr Emilio Álvarez y Pasaje Dr Guillermo Rodríguez Pacas No. 51 San Salvador El Salvador 
3. Notified under Article 2.9.2 [ X], 2.10.1 [ ], 5.6.2 [ X], 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):   Water flow in fully 
charged closed conduits.  Cold drinkabl e water and hot water (ICS code 23.060.01) 
5. Title, number of pages and language(s) of the notified document:   NSO 23.46.09:09, 
Medición de Flujo de Agua en Conductos C errados Totalmente Llenos.  Medidores Para 
Agua Potable Fría y Caliente, Parte 1.  Equipos y Métodos de Ensayo  (Salvadoran 
Mandatory Standard (NSO) No. 23.46.09:09, Measurement of water flow in fully charged 
closed conduits.  Meters for cold drinkable wate r and hot water, Part 1.  Testing equipment 
and methods)  (86 pages, in Spanish) 
6. Description of content:   The notified Salvadoran Mandatory Standard establishes the 
following:  Purpose, normative references, de finitions, common testing requirements, tests 
to determine indication errors, static precision t ests, loss-of-pressure t ests, accelerated wear 
tests, performance tests for electronic and mechanical water meters with electronic 
mechanisms, test programmes for model approva l, initial verification test, test report, 
Annex A – Calculation of the relative error of indication of a water meter, Annex B – Flow 
disturbance testing equipment, Annex C – Distributor, examples of methods and 
components used to test concentric water meters. 
7. Objective and rationale, including the nature of urgent problems where applicable:  
Consumer protection as part of legal metrology. G/TBT/N/SLV/131 
Page 2  
 
  8. Relevant documents:  
• IEC (International Electrotechnical Commission) 60068-2-64:1993, Environmental 
testing.  Part 2:  Test methods.  Test Fh:  Vibration, broad-band random (digital control) 
and guidance. 
• IEC 60068-3-1:1974, Environmental testing.  Part 3:  Background information.  Section 
one:  Cold and dry heat tests. 
• IEC 60068-3-4:2001, Environmental testing.  Part 3-4:  Supporting documentation and 
guidance.  Damp heat tests. 
• IEC 61000-4-2:1995, Electromagnetic compatibility (EMC).  Part 4:  Testing and 
measurement techniques – Section 2:  Electrostatic discharge immunity test.  Basic EMC 
publication. 
• IEC 61000-4-3, Electromagnetic compatibility (EMC).  Part 4-3:  Testing and 
measurement techniques.  Section 2:  Radi ated, radio-frequency, electromagnetic field 
immunity test. 
• IEC 61000-4-4:1995, Electromagnetic compatibility (EMC).  Part 4-5:  Testing and 
measurement techniques.  Surge immunity tests. 
• IEC 61000-4-5:1995, Electromagnetic compa tibility (EMC).  Testing and measurement 
techniques.  Part 4-5:  Surge immunity tests. 
• IEC 61000-4-11:1994, Electromagnetic compatib ility (EMC).  Part 4-11:  Testing and 
measurement techniques.  Voltage  dips, short interruptions and voltage variations immunity 
tests. 
• ENV 50204:1995, Radiated electromagnetic field from digital radio telephones.  
Immunity test. 
• OIML (International Organization of Legal Metrology) D 11:1994, General requirements 
for electronic measuring instruments. 
• OIML G-13:1989, Planning of metrology and testing laboratories (P 7). 
9. Proposed date of adoption: 
Proposed date of entry into force:   Upon publication in the Official Journal 
Six months after publication in the Official 
Journal 
10. Final date for comments:   60 days after the date of notification  G/TBT/N/SLV/131 
 Page 3 
 
 
  11. Texts available from:  National enquiry point [ X], or address, telephone and fax 
numbers and e-mail and website addresses, if available, of other body:  
Ministerio de Economía 
Dirección de Administración de Tratados Comerciales Alameda Juan Pablo II y Calle Guadalupe 
Plan Maestro, San Salv ador, El Salvador 
Tel.: (503) 2231 5788 Fax: (503) 2231 5789 E-mail: ezelada@minec.gob.sv
 
 
Consejo Nacional de Ciencia y Tecnología (CONACYT) 
Colonia Médica Avenida Dr Emilio Álvarez, Pasaje Dr Guillermo Rodríguez Pacas No. 51 San Salvador El Salvador 
Tel.: (503) 2226 2800 
Fax: (503) 2225 6255 E-mail: rharri@conacyt.gob.sv ;  evanegas@conacyt.gob.sv 
Website: http://www.infoq.org.sv