IEC 60730-2-6:2015

Automatic electrical controls - Part 2-6: Particular requirements for automatic electrical pressure sensing controls including mechanical requirements

IEC 60730-2-6:2015 applies to automatic electrical pressure sensing controls with a minimum gauge pressure rating of -60 kPa and a maximum gauge pressure rating of 4,2 MPa, for use in, on or in association with, equipment. The equipment may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof. This standard is also applicable to individual pressure sensing controls utilized as part of a control system or pressure sensing controls which are mechanically integral with multi-functional controls having non-electrical outputs. Automatic electrical pressure sensing controls for equipment used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. This standard does not apply to pressure sensing controls intended exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. This standard applies to inherent safety, operating values, operating sequences where such are associated with equipment protection, and to the testing of automatic electrical pressure sensing controls used in, on or in association with equipment. This standard is also applicable to the functional safety of low complexity safety related pressure sensing controls and systems. This standard is also applicable to pressure sensing controls for appliances within the scope of IEC 60335-1. This third edition cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- aligns the text with IEC 60730-1, Edition 5;
- modifies requirements for Class B control function (H.27.1.2.2);
- modifies requirements for Class C control function (H.27.1.2.3) and
- modifies requirements for faults during lock-out or safety- shut-down. Key words: sensing controls, control systems, pressure sensing
This publication is to be read in conjunction with IEC 60730-1:2013.

Dispositifs de commande électrique automatiques - Partie 2-6: Exigences particulières pour les dispositifs de commande électrique automatiques sensibles à la pression y compris les exigences mécaniques

IEC 60730-2-6:2015 s'applique aux dispositifs de commande électrique automatiques sensibles à la pression avec des caractéristiques assignées de pression minimales de -60 kPa et des caractéristiques assignées de pression maximales de 4,2 Mpa, destinés à être utilisés dans, sur ou avec des matériels. Les matériels peuvent utiliser l'électricité, le gaz, le pétrole, des combustibles solides, l'énergie thermique solaire, etc. ou une combinaison de ces sources d’énergie. La présente norme s’applique également aux dispositifs de commande sensibles à la pression individuels utilisés comme partie d'un système de commande ou comme dispositifs de commande sensibles à la pression intégrés mécaniquement dans des dispositifs de commande multifonctions ayant des sorties non électriques. Les dispositifs de commande électrique automatiques sensibles à la pression pour matériels utilisés par le public, par exemple les matériels destinés à être utilisés par des personnes inexpérimentées dans les magasins, l’industrie légère et dans les fermes, relèvent du domaine d’application de la présente norme.
La présente norme ne s'applique pas aux dispositifs de commande sensibles à la pression prévus exclusivement pour des applications industrielles, sauf mention contraire dans la norme de matériel appropriée. La présente norme s’applique à la sécurité intrinsèque, aux valeurs de fonctionnement et aux séquences de fonctionnement dans la mesure où elles interviennent dans la protection des matériels, ainsi qu’aux essais des dispositifs de commande électrique automatiques sensibles à la pression utilisés dans, sur ou avec des matériels.
La présente norme s’applique également aux systèmes et dispositifs de commande sensibles à la pression de sécurité fonctionnelle et de sécurité peu complexe.
La présente norme s'applique également aux dispositifs de commande sensibles à la pression pour appareils d’utilisation faisant partie du domaine d'application de l’IEC 60335-1.
Cette troisième édition annule et remplace la deuxième édition parue en 2007. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- alignement du texte de cette édition sur celui de l’IEC 60730-1, Édition 5;
- modification des exigences de la fonction de commande de classe B (H.27.1.2.2);
- modification des exigences de la fonction de commande de classe C (H.27.1.2.3);
- modification des exigences relatives aux pannes pendant le verrouillage ou l’arrêt de sécurité.
La présente partie 2 est destinée à être utilisée conjointement avec l’IEC 60730-1:2013
Mots clés: commande sensibles, système de commande, sensibles à la pression

General Information

• Status: Published
• Publication Date: 21-Apr-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.060.10 - Wires
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: TC 72 - Automatic electrical controls
• Drafting Committee: WG 6 - TC 72/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 30-Apr-2015
• Completion Date: 22-Apr-2015

Relations

• Amended By: IEC 60730-2-6:2015/AMD1:2019 - Amendment 1 - Automatic electrical controls - Part 2-6: Particular requirements for automatic electrical pressure sensing controls including mechanical requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 60730-2-6:2007 - Automatic electrical controls for household and similar use - Part 2-6: Particular requirements for automatic electrical pressure sensing controls including mechanical requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60730-2-6 ®
Edition 3.0 2015-04
INTERNATIONAL
STANDARD
Automatic electrical controls –
Part 2-6: Particular requirements for automatic electrical pressure sensing
controls including mechanical requirements
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
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77, 86 and CISPR.
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IEC 60730-2-6 ®
Edition 3.0 2015-04
INTERNATIONAL
STANDARD
Automatic electrical controls –

Part 2-6: Particular requirements for automatic electrical pressure sensing

controls including mechanical requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.120 ISBN 978-2-8322-2587-5

– 2 – IEC 60730-2-6 © IEC 2015
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 8
3 General requirements . 9
4 General notes on tests . 10
5 Rating. 10
6 Classification . 10
7 Information . 11
8 Protection against electric shock . 11
9 Provision for protective earthing . 11
10 Terminals and terminations . 11
11 Constructional requirements . 12
12 Moisture and dust resistance . 14
13 Electric strength and insulation resistance . 14
14 Heating . 14
15 Manufacturing deviation and drift . 14
16 Environmental stress . 15
17 Endurance . 15
18 Mechanical strength . 16
19 Threaded parts and connections . 17
20 Creepage distances, clearances and distances through solid insulation . 17
21 Resistance to heat, fire and tracking . 17
22 Resistance to corrosion . 18
23 Electromagnetic compatibility (EMC) requirements – Emission . 18
24 Components . 18
25 Normal operation . 18
26 Electromagnetic compatibility (EMC) requirements – Immunity . 18
27 Abnormal operation . 18
28 Guidance on the use of electronic disconnection . 18
Annexes . 19
Annex H (normative) Requirements for electronic controls . 20
Annex AA (normative) Number of cycles . 27
AA.1 Number of cycles for independently mounted controls . 27
AA.2 Cycling rate for independently mounted controls . 27
Annex BB (informative) Stainless steel for bellows, bourdon tubes or similar elements . 28
Annex CC (informative)  Deviation and drift requirements for pressure operating

controls . 31
Bibliography . 32

IEC 60730-2-6 © IEC 2015 – 3 –
Table 1 (7.2 of edition 3) – Required information and methods of providing information . 11
Table H.101 – Compliance criteria . 22
Table BB.1 – Stainless steel for bellows, bourdon tubes or similar elements (1 of 3) . 28

– 4 – IEC 60730-2-6 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –

Part 2-6: Particular requirements for automatic electrical
pressure sensing controls including mechanical requirements

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60730-2-6 has been prepared IEC technical committee 72:
Automatic electrical controls.
This third edition cancels and replaces the second edition published in 2007. This edition
constitutes a technical revision. This edition includes the following significant technical
changes with respect to the previous edition:
a) aligns the text with IEC 60730-1, Edition 5;
b) modifies requirements for Class B control function (H.27.1.2.2);
c) modifies requirements for Class C control function (H.27.1.2.3);
d) modifies requirements for faults during lock-out or safety- shut-down.

IEC 60730-2-6 © IEC 2015 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
72/980/FDIS 72/992/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2 is intended to be used in conjunction with IEC 60730-1. It was established on the
basis of the fifth edition (2013) of that publication. Consideration may be given to future
editions of, or amendments to, IEC 60730-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60730-1 so as to
convert that publication into the IEC standard: Particular requirements for automatic electrical
pressure sensing controls including mechanical requirements.
Where this part 2 states "addition", "modification", or "replacement", the relevant requirement,
test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, this part 2 indicates that the relevant clause or subclause
applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The “in some countries” notes regarding differing national practices are contained in the
following subclauses:
10.1.4
15.1.101
18.101
Annex CC
In this publication:
1) The following print types are used:
– Requirements proper: in roman type;
– Test specifications: in italic type;
– Notes; in small roman type;
– Words defined in Clause 2: bold.
2) Subclauses, notes, tables and figures which are additional to those in part 1 are numbered
sta
...

IEC 60730-2-6 ®
Edition 3.0 2015-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Automatic electrical controls –
Part 2-6: Particular requirements for automatic electrical pressure sensing
controls including mechanical requirements

Dispositifs de commande électrique automatiques –
Partie 2-6: Exigences particulières pour les dispositifs de commande électrique
automatiques sensibles à la pression y compris les exigences mécaniques
IEC60730-2-6:2015-04(en-fr)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
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CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
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bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

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The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
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IEC 60730-2-6 ®
Edition 3.0 2015-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Automatic electrical controls –

Part 2-6: Particular requirements for automatic electrical pressure sensing

controls including mechanical requirements

Dispositifs de commande électrique automatiques –

Partie 2-6: Exigences particulières pour les dispositifs de commande électrique

automatiques sensibles à la pression y compris les exigences mécaniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.120 ISBN 978-2-8322-5268-0

– 2 – IEC 60730-2-6:2015 © IEC 2015
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 8
3 General requirements . 9
4 General notes on tests . 10
5 Rating. 10
6 Classification . 10
7 Information . 11
8 Protection against electric shock . 11
9 Provision for protective earthing . 11
10 Terminals and terminations . 11
11 Constructional requirements . 12
12 Moisture and dust resistance . 14
13 Electric strength and insulation resistance . 14
14 Heating . 14
15 Manufacturing deviation and drift . 14
16 Environmental stress . 15
17 Endurance . 15
18 Mechanical strength . 16
19 Threaded parts and connections . 17
20 Creepage distances, clearances and distances through solid insulation . 17
21 Resistance to heat, fire and tracking . 17
22 Resistance to corrosion . 18
23 Electromagnetic compatibility (EMC) requirements – Emission . 18
24 Components . 18
25 Normal operation . 18
26 Electromagnetic compatibility (EMC) requirements – Immunity . 18
27 Abnormal operation . 18
28 Guidance on the use of electronic disconnection . 18
Annexes . 19
Annex H (normative) Requirements for electronic controls . 20
Annex AA (normative) Number of cycles . 27
AA.1 Number of cycles for independently mounted controls . 27
AA.2 Cycling rate for independently mounted controls . 27
Annex BB (informative) Stainless steel for bellows, bourdon tubes or similar elements . 28
Annex CC (informative)  Deviation and drift requirements for pressure operating

controls . 31
Bibliography . 32

Table 1 (7.2 of edition 3) – Required information and methods of providing information . 11
Table H.101 – Compliance criteria . 22
Table BB.1 – Stainless steel for bellows, bourdon tubes or similar elements . 28

– 4 – IEC 60730-2-6:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –

Part 2-6: Particular requirements for automatic electrical
pressure sensing controls including mechanical requirements

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, se
...

IEC 60730-2-6 ®
Edition 3.1 2019-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Automatic electrical controls –
Part 2-6: Particular requirements for automatic electrical pressure sensing
controls including mechanical requirements

Dispositifs de commande électrique automatiques –
Partie 2-6: Exigences particulières pour les dispositifs de commande électrique
automatiques sensibles à la pression y compris les exigences mécaniques

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
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IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
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en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
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IEC 60730-2-6 ®
Edition 3.1 2019-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Automatic electrical controls –

Part 2-6: Particular requirements for automatic electrical pressure sensing

controls including mechanical requirements

Dispositifs de commande électrique automatiques –

Partie 2-6: Exigences particulières pour les dispositifs de commande électrique

automatiques sensibles à la pression y compris les exigences mécaniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.120 ISBN 978-2-8322-7426-2

IEC 60730-2-6 ®
Edition 3.1 2019-09
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Automatic electrical controls –
Part 2-6: Particular requirements for automatic electrical pressure sensing
controls including mechanical requirements

Dispositifs de commande électrique automatiques –
Partie 2-6: Exigences particulières pour les dispositifs de commande électrique
automatiques sensibles à la pression y compris les exigences mécaniques

– 2 – IEC 60730-2-6:2015+AMD1:2019 CSV
© IEC 2019
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 8
3 General requirements . 9
4 General notes on tests . 10
5 Rating. 10
6 Classification . 10
7 Information . 11
8 Protection against electric shock . 11
9 Provision for protective earthing . 11
10 Terminals and terminations . 11
11 Constructional requirements . 12
12 Moisture and dust resistance . 14
13 Electric strength and insulation resistance . 14
14 Heating . 14
15 Manufacturing deviation and drift . 14
16 Environmental stress . 15
17 Endurance . 15
18 Mechanical strength . 16
19 Threaded parts and connections . 17
20 Creepage distances, clearances and distances through solid insulation . 18
21 Resistance to heat, fire and tracking . 18
22 Resistance to corrosion . 18
23 Electromagnetic compatibility (EMC) requirements – Emission . 18
24 Components . 18
25 Normal operation . 18
26 Electromagnetic compatibility (EMC) requirements – Immunity . 18
27 Abnormal operation . 18
28 Guidance on the use of electronic disconnection . 18
Annexes . 19
Annex H (normative) Requirements for electronic controls . 20
Annex AA (normative) Number of cycles . 27
AA.1 Number of cycles for independently mounted controls . 27
AA.2 Cycling rate for independently mounted controls . 27
Annex BB (informative) Stainless steel for bellows, bourdon tubes or similar elements . 28
Annex CC (informative)  Deviation and drift requirements for pressure operating
controls . 31
Bibliography . 32

© IEC 2019
Table 1 (7.2 of edition 3) – Required information and methods of providing information . 11
Table H.101 – Compliance criteria . 22
Table BB.1 – Stainless steel for bellows, bourdon tubes or similar elements . 28

– 4 – IEC 60730-2-6:2015+AMD1:2019 CSV
© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-6: Particular requirements for automatic electrical
pressure sensing controls including mechanical requirements
FOREWORD
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