Dial thermometers

This European Standard specifies requirements and testing for dial indicating thermometers using sensing methods of gas expansion (symbol GE), liquid expansion (symbol LE) and bimetallic strip (symbol BM). Nominal sizes are from 40 to 160, and temperature measurement from -100 °C to +700 °C.
Thermometers specified have circular scales, and are for industrial use only.
Thermometers of square form are also covered by this standard except for case, scale and pointer dimensions.
Annex A includes recommendations for selection and installation.
This standard does not apply to thermometers for medical use nor to thermometers with electrical limit contact devices.

Zeigerthermometer

Diese Europäische Norm legt die Anforderungen und Prüfung für Zeigerthermometer fest, die bei der Temperaturaufnahme die Druckänderung von Gasen (Symbol GE), die Ausdehnung von Flüssigkeiten (Symbol LE) und die unterschiedliche Ausdehnung von Bimetallen (Symbol BM) nutzen. Sie gilt für Nenngrößen von 40 bis 160 und für Temperaturbereiche von -100 °C bis +700 °C.
Die Festlegungen gelten für Thermometer mit rundem Zifferblatt, die für industrielle Anwendungen vorgesehen sind.
Diese Norm gilt auch für quadratische Thermometer, deren Maße für die Gehäuse, das Zifferblatt und den Zeiger in dieser Norm nicht festgelegt sind.
Der Anhang A dieser Norm enthält Auswahl- und Einbauempfehlungen.
Diese Norm gilt nicht für Thermometer für die Anwendung in der Medizin und nicht für Thermometer mit Einrichtungen zur elektrischen Grenzsignalgabe.

Thermomètres à cadran

La présente Norme européenne spécifie les prescriptions et les essais pour les thermomètres indicateurs à cadran utilisant les méthodes de détection par dilatation de gaz (symbole GE), dilatation de liquide (symbole LE) et par bilame (symbole BM). Les dimensions nominales concernées vont de 40  à 160  et les échelles de mesure de la température de - 100 °C à + 700 °C.
Les thermomètres couverts ont des échelles circulaires et sont à usage industriel uniquement.
Les thermomètres de forme carrée sont également couverts par la présente norme, excepté en pour ce qui concerne les dimensions du boîtier, de l'échelle et de l'aiguille.
L'annexe A fournit des recommandations pour la sélection et l'installation.
La présente norme ne s'applique ni aux thermomètres destinés à un usage médical, ni aux thermomètres à contacts électriques.

Kazalni termometri

General Information

Status
Published
Publication Date
13-Nov-2001
Current Stage
9093 - Decision to confirm - Review Enquiry

Buy Standard

Standard
EN 13190:2002
English language
19 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kazalni termometriZeigerthermometerThermometres a cadranDial thermometers17.200.20Instrumenti za merjenje temperatureTemperature-measuring instrumentsICS:Ta slovenski standard je istoveten z:EN 13190:2001SIST EN 13190:2002en01-junij-2002SIST EN 13190:2002SLOVENSKI

STANDARD
SIST EN 13190:2002

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13190November 2001ICS 17.200.20English versionDial thermometersThermomètres à cadranZeigerthermometerThis European Standard was approved by CEN on 28 September 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13190:2001 ESIST EN 13190:2002

EN 13190:2001 (E)2ContentspageForeword......................................................................................................................................21Scope...............................................................................................................................................22Normative references.........................................................................................................................33Terms and definitions........................................................................................................................34Nominal sizes........................................................................................................................................46Accuracy classes.................................................................................................................................57Dimensions............................................................................................................................................58Requirements.......................................................................................................................................10Key159Testing...................................................................................................................................................1610Designation................................................................................................................................16Annex A (informative)

Selection and installation recommendations...........................................17Bibliography.................................................................................................................................................19ForewordThis European Standard has been prepared by Technical Committee CEN/TC 141 "Pressure gauges -Thermometers - Means of measuring and/or recording temperature in the cold chain", the secretariat of which isheld by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest byMay 2002.This document includes a Bibliography.Annex A is informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.1ScopeThis European Standard specifies requirements and testing for dial indicating thermometers using sensing methods ofgas expansion (symbol GE), liquid expansion (symbol LE) and bimetallic strip (symbol BM). Nominal sizes are from40 to 160, and temperature measurement from -100 C to +700 C.Thermometers specified have circular scales, and are for industrial use only.Thermometers of square form are also covered by this standard except for case, scale and pointer dimensions.Annex A includes recommendations for selection and installation.This standard does not apply to thermometers for medical use nor to thermometers with electrical limit contactdevices.SIST EN 13190:2002

EN 13190:2001 (E)32Normative referencesThis European Standard incorporates by dated or undated references, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. For datedreferences, subsequent amendments to or revisions of any of these publications apply to this European Standard onlywhen incorporated in it by amendment or revision. For undated references the latest edition of the publication referredto applies (including amendments).ANSI/ASME B1.20.1, Pipe threads – General purpose (inch).EN 22768-1, General tolerances – Part 1: Tolerances for linear and angular dimensions without individual toleranceindications (ISO 2768-1 : 1989).ISO 68-1, ISO general purpose screw threads – Basic profile – Part 1: Metric screw threads.ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads – Part 1: Dimensions, tolerancesand designation.ISO 10102, Assembly tools for screws and nuts – Double-headed open-ended engineers' wrenches.International vocabulary of basic and general terms in metrology (VIM). BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML,2nd. Edition 1993.3Terms and definitionsFor the purpose of this European Standard the terms and definitions given in the International vocabulary of basic andgeneral terms in metrology (VIM) and the following terms and definitions apply.3.1dial indicating thermometerinstrument consisting of head and temperature detecting element or stem connected together by a rigid stem or,except for a bimetallic thermometer, by a flexible capillary3.2bimetallic thermometer (BM)dial indicating thermometer operated by differential expansion strip, helix or coil3.3gas expansion thermometer (GE)dial indicating thermometer operating on the principle of change in pressure of a fixed volume of gas in response totemperature change3.4liquid expansion thermometer (LE)dial indicating thermometer operating on the principle of liquid volume expansion in response to temperature change3.5temperature detecting elementthat part of a thermometer which supports and includes the sensitive portion3.6sensitive portion of temperature detecting elementthat part of the temperature detecting element which contains the major portion of the temperature sensitive fluid orbimetal stripSIST EN 13190:2002

EN 13190:2001 (E)43.7thermometer insertion lengthdistance that temperature detecting element is inserted into process medium3.8thermometer movementassembly by means of which the expansion of the fluid used or bimetallic strip

are transformed and enlarged into anangular variation3.9thermometer connectionpart by which the dial indicating thermometer can be coupled to the temperature tapping of the plant, pipework orequipment3.10thermometer compensationapparatus fitted inside head and/or capillary to minimise errors due to ambient temperature variations3.11adjustable pointerpointer with an adjustable device3.12nominal size (thermometer)conventional alpha-numerical designation relating to the size of the thermometer4Nominal sizesNominal sizes of the thermometers are as follows: 40, 50, 63, 80, 100, 130, 150 and 160.See Table 1 for dimensions.5Nominal rangesThe degree Celsius abbreviated to C is the preferred unit of temperature measurement. The following nominalranges are specified:fromfromfromfromfromfromfromfromfromfromfromfromfromfrom0 C0 C0 C0 C0 C0 C0 C0 C0 C0 C0 C0 C50 C100 Ctotototototototototototototo60 C80 C100 C120 C160 C200 C250 C300 C400 C500 C600 C700 C650 C700 Cfromfromfromfromfromfromfromfromfrom-20 C-20 C-20 C-30 C-30 C-30 C-40 C-40 C-100 Ctototototototototo+40 C+60 C+120 C+30 C+50 C+70 C+40 C+60 C+60 CNOTE

Not all types of thermometer are suitable for all ranges (see also Table A.1).SIST EN 13190:2002

EN 13190:2001 (E)56Accuracy classesThe following accuracy classes are defined: class 1 and class 2.Class 1 may be used with nominal sizes 63 to 160, class 2 may be used with

nominal sizes 40 to 160.7Dimensions7.1General tolerancesGeneral tolerances: Tolerance class m according to EN 22768-17.2Cases and flangesThe user will have to determine the dimensions for panel cut-out according to the manufacturer's data.Keyd1Outside diameter of cased2Outside diameter of flanged3Diameter of fixing hole circled4Diameter of fixing holesFigure 1 - Dimensions of thermometer cases and flangesSIST EN 13190:2002

EN 13190:2001 (E)6Table 1 - DimensionsNominal sized1 min.mmd2 max.mmd3mmd4mm403861513,6504871603,6636186753,68077110955100971341186130125–––15014718616861601571961786NOTE

Elongated holes can be accepted to ensure interchangeability with previous standards.7.3Thermometer connectionThe type of connections in Figure 2 are used for both rigid stem thermometers and thermometers with capillary. Theconnections in Figure 3 are for rigid stem thermometers only. The length of "l5" of thermometer connection form 4depends of the length of the threaded part of its thermowell and shall be longer than the latter.The minimum height of the hexagon, square or flats shall be compatible with use of standard spanners according toISO 10102.7.3.1Screw threadsParallel pipe threads (symbol G) according to ISO 228-1.Taper pipe threads (symbol NPT) according to ANSI/ASME B1.20.1.ISO general purpose metric screw threads (symbol M) having basic profile according to ISO 68-1.Other threads specific to certain industries are acceptable.7.3.2Temperature detecting elementThe diameter of the temperature detecting element "d5" and its length "l1" (see Figures 2 and 3) will be atmanufacturer's discretion or should be by agreement between purchaser and supplier.7.3.3Sensitive portion of the temperature detecting elementThe length of the sensitive portion of the temperature detecting element "l2" (see Figures 2 and 3) shall be stated bythe manufacturer.SIST EN 13190:2002

EN 13190:2001 (E)7Form1Plain stemForm 2Adjustable compressionfitting parallel thread(l1min > l2+ l3)Form 3Adjustable compressionfitting taper thread(l1min > l2+ l4)Form 4Loose nut(External thread,l5 shall be stated bythe manufacturer)Form 5Union nutFigure 2 - Connections of rigid stem thermometer and capillary type thermometerForm 6Fixed hexagon with parallel threadForm 7Fixed hexagon with taper threadFigure 3 - Connections of rigid stem thermometerSIST EN 13190:2002

EN 13190:2001 (E)8Table 2 - Dimensions of threaded connectionsDimensions in millimetresFormThread sized6d7min.l3min.l4l6min.G 1/2 B2513G 3/4 B30162 and 6G 1 B3918–M20

1,52413M24
1,52714–M27

230161/4-18 NPT EXTaccording to3 and 71/2-14 NPT EXT ANSI/ASME3/4-14 NPT EXT8.1.20.14G 1/2 BG 3/4 B––G 1/2, M20

1,5–8,55G 3/4, M24
1,5M27
210,5G 112,5SIST EN 13190:2002

EN 13190:2001 (E)97.4Types of mounting and connection positionTable 3 - Rigid stem thermometerFormConnectionBimetallicLiquid or gasfilled1Radial–2Radial withnecktube3Centre back–4Centre backwith necktube5Offset backwithneck tube_–6Angle stem_7Adjustableangle stem8Back flange9Back flangeoffset_SIST EN 13190:2002

EN 13190:2001 (E)10Table 4 - Capillary type thermometerType of mountingSurface mountingFlush mountingConnection3 hole fixingClamp fixingWall bracketForm1011Radial__Form121314Centre back_Form151617Offset back_8RequirementsThe test methods for these requirem

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.