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1、J Is I UDC 536 I532: 621.362/. 363 JAPANESE I NDUSTRIAL STANDARD Indicating Thermoelectric Thermometers JIS C I60 I -1983 Translated and Published by o Japanese St andards Association Printed in Japan 14 S Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Em
2、ployees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*lbOl 83 4933b08 0027144 7 m Translation without guarantee standard in Japanese is to be evidence i n the event of any doubt arising, the origina
3、l a Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*lbOL 83 W 4933b08 0027345 7 W UDC 536.532:621.
4、362/.363 JAPANESE INDUSTRIAL STANDARD J I S Indicating Thermoelectric Thermometers C 1601-1983 1, Scope This Japanese Industrial Standard specifies indicating thermoelectric thermometers of analog system consisting of the combination of moving coil type indicators and the thermocouples specified in
5、JIS C 1602 (including meters provided with an amplifier and/or reference junction compensating circuit) , hereinafter referred to as the “thermometers“, Indicators provided with a burn-out (l) circuit are, however, employed only in thermometers with amplifier. For thermometers provided with either o
6、ne or both of control mechanism and alarming mechanism, this standard applies as practical. Note (l) The burn-out means such function that allows the indicator to deflect over the maximum or minimum scale value when the thermocouple circuit disconnects. 2. Definitions For the purpose of this standar
7、d, beside in conformity with JI$ Z 8103, the following definitions apply : (1) indicator A moving coil type indicator. For an indicator with an amplifier, this term means the indicator including the amplifier. (2) adjustinp rheostat A resistance to adjust external resistance of an indicator to the n
8、ominal value. Applicable Standards: JIS C 1102-Electrical Indicating Instruments JIS C 1301-Insulation Resistance Testers (Magneto Generator Operated) JIS C 1302-Insulation Resistance Testers (Battery Operated) JIS C 1602-Thermocouples JIS G 3101-Rolled Steel for General Structure JIS Z 8103-Glossar
9、y of Terms Used in Instrumentation JIS Z 8703-Standard Atmospheric Conditions for Testing Ref er ence Standards : JIS C 1610-Compensating Lead Wires JIS Z 8704-Electrical Methods of Temperature Measurements Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS E
10、mployees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*3bO3 83 = 4933b08 0027346 O Class of indicator , 2 C 1601-1983 Letter symbol external resistance thermocouple, compensating conductor, lead wir
11、e, etc. connected to the measuring terminals of an indicator. For an indicator having an adjusting rheostat inside its measuring terminals, external resistance means the above-mentioned external resistance plus the adjusting rheostat. The resistance of the circuit composed of a nominal value of exte
12、rnal resistance The value of external resistance indicated on an indicator. measuring range of indicator indicator. All range of scale graduated on an effective measuring range of indicator The range in which the accuracy specified in this standard must be guaranteed within the measuring range of an
13、 indicator, scale span mum scale value. For example, in an indicator of -200 to 100C, the scale span is 300C. The difference between the maximum scale value and mini- 3. Classification 3.1 Class of Indicator Indicators are classified by their accuracy as given in Table 1. Table 1 Class 0.5 Class 1.0
14、 Class 2. O 0.5 or CLASS 0.5 1.0 or CLASS 1.0 2.0 or CLASS 2.0 Remarks 1. CLASS may be written in small letters. 2. Class 0.5 does not apply to indicators provided with amplifier and/or reference junction compensating circuit. Copyright Japanese Standards Association Provided by IHS under license wi
15、th JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*1bOL 83 4933b88 0027147 2 3 C 1601-1983 3.2 Principle of Operation The principle of operation of indicators shall be moving
16、 coil type. and/or reference junction compensating circuit. It may also include such system providing an amplifier 3.3 Measuring Range of Indicator 3.3.1 Temperature Scale The measuring ranges of indicators shall, as a rule, be those given in Table 2. Table 2 unit: “C Kind of thermocouple combined (
17、2) B R S E (CRC) Measuring range (3) O to 1700, 600 to 1700 O to 1000, O to 1200, O to 1400, O to 1600, 400 to 1400, 600 to 1600, 800 to 1600 -200 to 100, O to 300, O to 400, O to 500, O to 600, O to 800, O to 1000, O to 1200, 300 to 600, 400 to 800, 500 to 1000, 600 to 1200 -200 to 100, O to 200, O
18、 to 300, O to 400, O to 500, O to 600, O to 800, 200 to 400, 300 to 600 O to 200, O to 300, O to 400, O to 500, O to 600, 200 to 400, 300 to 600 -200 to 100, O to 300 Notes (2) The kinds of thermocouple are indicated by the symbols of JIS C 1602. The symbols in parentheses are the old symbols and gi
19、ven for reference only. The range for overheating use is included. (3) 3.3.2 Double Scale in Temperature and mV i n an indicator with double scale in temperature arad mV, the mV scale shall be graduated to indicate the terminal voltage. of temperature scale shall be taken as the maximum value of mV.
20、 The mV value almost corresponding to the maximum value Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J
21、I S C*LbOL 83 m 4933b08 0027148 4 m Class of indicator 4 C 1601-1983 Tolerances (in % of scale span) 3.4 Effective Measuring Range of Indicator The effective measuring range of an indicator shall be the whole measuring range of the indicator. However, the effective measuring range shall be limited 2
22、5 % or more of the maximum scale value for indicators used with thermocouples of R and S, and 1000C or more for indicators used with thermocouples of B. 4. Performances 4 1 Tolerances 4.1.1 Tolerances of Indicator Itself The tolerances of an indicator itself shall be such that the error in indicatio
23、n is within the limits given in Table 3 when the indicator is tested through its effective measuring range in accordance with 6.3.1. compensating circuit, the error of the circuit is included. Provided that, for an indicator provided with reference junction Tab1.e 3 Class 0.5 Class 1.0 Class 2.0 - +
24、 0.5 - + 1.0 + 2.0 - 4.1.2 Tolerances of Thermometer The tolerance of a thermometer is tie sum of individual tolerance of the indicator, thermocouple, compensating con- ductor, etc. which composed the thermometer. 4.2 Operation and Characteristics 4.2.1 Response An indicator shall be good in respons
25、e, and its response time shall be 5 sec. or less when tested in accordance with 6.3.2. The response time of an indicator in which the value of thermoelectromotive force corresponding to the scale span is 10 mV or less and no amplifier is provided shall, however, be 7 sec. or less. 4.2.2 Hysterisis E
26、rror Hysterisis error of an indicator shall not exceed the relevant limit of Table 4, when tested through the effective measuring range of the indicator in accordance with 6.3.3. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wi
27、ng, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*lbOl 83 4933608 0027147 b m Class of indicator 5 C 1601-1983 Difference in indicated values caused by 6.3.4 (2) (in % of scale span) Deviation caused by 6.3.4 (1) (in % of
28、 scale span) Table 4 Allowable limits of hysterisis error (in % of scale span) Class of indicator Class 0.5 Class 1.0 Class 2. O 0.4 1.0 2. o 4.2.3 Influence of Position The influence of position on an indicator shall not exceed the relevant limit of Table 5,when tested in accordance with 6.3.4 (1).
29、 i n a portable indicator, the influence This number is increased to 200 only for mV scale, 5.5.2 Scale The scale spacing of the scale in the effective measuring range of an indicator shall have the appropriate value given in Table 14. Table 14 Class of indicator I Scale spacing Class 0.5 Class 1.0
30、or 2.0 0.5 min. 0.8 min. 5.5.3 Clearance between Pointer and Scale Plate i n an indicator without mirror, the clearance between the pointer and scale plate shall not exceed 3 mm. An indicator with a pointer of 150 mm or more in length, however, my not follow the above requirement. 5.5.4 Scale of Edg
31、ewise Indicator The angle of scale in an edgewise indi- cator shall not exceed 80 degrees. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitte
32、d without license from IHS -,-,- 1 1 C 1601-1983 5 6 Pointer Adjusting Device An adjusting device capable of adjusting the pointer to the zero point of scale or to the reference junction temperature should be provided, if necessary. capable of performing the adjustment of pointer while sufficiently
33、insulated from the electric circuit of indicator. This device shall be perfect in construction and 6.1 Tests The tests of thermometer shall, as a rule, be carried out on the indicator, thermocouple, and compensating conductor separately. However, if necessary the above requirement may not be followe
34、d. 6.2 Test Conditions The test of an indicator shall, as a rule, be carried out under the conditions prescribed in 6.2.1 and 6.2.2. .6.2.1 follows : Standard Test Condition The standard test condition shall be as Ambient Temperature constant as possible. However, if no doubt arises on the judgement
35、, the test may be carried out at the ordinary temperature (20 2 15C) specified in JIS Z 8703, A temperature of 20 2 2C which is as Humidity Relative humidity of 65 $. 5 %. However, if no doubt arises on the judgement, the test G y be carried out at the ordinary humidity (65 - + 20 %) specified in JI
36、S Z 8703. External Magnetic Field earth magnetic field. Position in front, rear, left or right. Power Source Voltage Power Source Frequency Magnetic field equal to or less than the A position within 3 degrees from the specified position (5) The rated power source voltage + 1 %. - The rate power sour
37、ce frequency + 1 %. - Note (5) For an indicator the position of which is not specified, this position is such that the scale plate becomes vertical for panel use or horizontal for portable use. 6.2.2 Summary of Standard Test The summary of standard test is as follows : Copyright Japanese Standards A
38、ssociation Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27:59 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*lbOl 83 4933b08 002715b 3 IzI 12 C 1601-1983 (1) Test Equipment and Test Circuit
39、 The test equipment, measuring instruments and the like of appropriate stability and accuracy to ensure reasonable test result corresponding to the class of indicator under test shall be selected. Further, the input (signal) voltage generator shall have an out- put resistance of 10 Q or less. Indica
40、tor without Reference Junction Compensating Circuit output terminals of input voltage generator and the test terminals (measuring terminals if test terminals are not provided) of the indicator under test shall be connected with copper conductors as shown in Fig. 2 (1). terminal shall be grounded. Th
41、e When the indicator is fitted with a grounding terminal, the Indicator with Reference Junction Compensating Circuit The output terminals of input voltage generator and the test terminals (measur- ing terminals if test terminals are not provided) of the indicator under test shall be connected with c
42、opper conductors and element wires of the thermocouple specified for the indicator, as shown in Fig. 2 (2). couple element wire shall be maintained at ice point. terminal shall be grounded. The junction points of copper conductor and thermo- When the indicator is fitted with a grounding terminal, th
43、e Fig. 2. Organization of Test Circuit (1) For Indicator without Reference Junction Compensating Circuit - +o- d + - - Output terminal Test terminal. Input voltage generator + leg of thermocouple element wire - (2) For Indicator with Reference indicator - Junction Compensating Circuit under test - l
44、eg of thermocouple 1-1 element wire I I Output ter mina1 Input voltage generator Ice point device Indicator under test Copper conductor Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 19:27
45、:59 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS C*3bOl 83 W 4933608 0027357 5 - (3 13 C 1601-1983 Time from Witching-on of Power Source to Commencement of Test In the test of an indicator which utilizes external power source, the power source is switched-on, an inpu
46、t voltage almost corresponding to the maximum scale value is applied, and the test shall be com- menced after the indicator has been allowed to stand under such condition for 5 min or more in the case of an indicator without both of amplifier and reference junction compensating circuit, and for 15 m
47、in or more in the case of an indicator with amplifier and/or refer- ence junction compensating circuit. Adjustment of Indicator and/or adjusting rheostat, adjustment of those devices shall be made prior to the measurement of error in indication. For an indicator with pointer adjusting device Elimina
48、tion of Hysterisis shall be made with the influence of hysterisis eliminated. The tests other than hysterisis error test 6.3 Test Procedure 6.3.1 Tolerance The error in indication of an indicator shall be measured at significant few points. The measurement shall be made by starting from the upper side toward the lower side of scale, then also from the lower side toward the upper side, and the average value of measured values by both ways shall be taken. (1)