N11 温度与压力仪表 标准查询与下载



共找到 862 条与 温度与压力仪表 相关的标准,共 58

The errata corrections listed below apply to ASME PTC 19.3 TW-2010. These corrections will be incorporated into the next edition of ASME PTC 19.3 TW.

Thermowells Performance Test Codes

ICS
17.200.20
CCS
N11
发布
2012-03-01
实施
2012-03

Thermowells - Performance Test Codes

ICS
17.200.20
CCS
N11
发布
2012-03
实施

ERRATUM

ICS
CCS
N11
发布
2012-02-02
实施

1.1 This Guide describes general-purpose, digital contact thermometers (hereafter simply called ???digital thermometers???) that provide temperature readings in units of degrees Celsius or degrees Fahrenheit, or both. The different types of temperature sensors for these thermometers are described, and their relative merits are discussed. Nine accuracy classes are introduced for digital thermometerhes; these classes consider the accuracy of the sensor/measuring-instrument unit. 1.2 The proposed accuracy classes for digital thermometers pertain to the temperature interval of ???200 ??C to 500 ??C, an interval of special interest for many applications in thermometry. All of the temperature sensor types for the digital thermometers discussed are able to measure temperature over at least some range within this interval. Some types are also able to measure beyond this interval. To qualify for an accuracy class, the thermometer must measure correctly to within a specified value (in units of ??C) over this interval or over the subinterval in which they are capable of making measurements. Those thermometers that can measure temperature in ranges beyond this interval generally have larger measurement uncertainty in these ranges. 1.3 The digital thermometer sensors discussed are platinum resistance sensors, thermistors, and thermocouples. The range of use for these types of sensors is provided. The measurement uncertainty of a sensor is determined by its tolerance class or grade and whether the sensor has been calibrated. 1.4 This Guide provides a number of recommendations for the manufacture and selection of a digital thermometer. First, it recommends that the thermometer???s sensor conform to applicable ASTM specifications. Also, it recommends minimum standards for documentation on the thermometer and informational markings on the probe and measuring instrument. 1.5 The derived SI units (degrees Celsius) found in this Guide are to be considered standard. However, thermometers displaying degrees Fahrenheit are compliant with this guide as long as all other guidance is followed. 1.6 This standard does not purport to address all of the safety concerns, if any, assoc......

Standard Guide for Standard Guide for Digital Contact Thermometers

ICS
CCS
N11
发布
2012
实施

4.1 Digital thermometers are used for measuring temperature in many laboratories and industrial applications. 4.2 For many applications, digital thermometers using external probes are considered environmentally-safe alternatives to mercury-in-glass thermometers. (1)3 4.3 Some digital thermometers are also used as reference or working temperature standards in verification and calibration of thermometers and also in determining the conditions necessary for evaluating the performance of other measuring instruments used in legal metrology and industry. 1.1 This Guide describes general-purpose, digital contact thermometers (hereafter simply called “digital thermometers”) that provide temperature readings in units of degrees Celsius or degrees Fahrenheit, or both. The different types of temperature sensors for these thermometers are described, and their relative merits are discussed. Nine accuracy classes are introduced for digital thermometerhes; these classes consider the accuracy of the sensor/measuring-instrument unit. 1.2 The proposed accuracy classes for digital thermometers pertain to the temperature interval of –200 °C to 500 °C, an interval of special interest for many applications in thermometry. All of the temperature sensor types for the digital thermometers discussed are able to measure temperature over at least some range within this interval. Some types are also able to measure beyond this interval. To qualify for an accuracy class, the thermometer must measure correctly to within a specified value (in units of °C) over this interval or over the subinterval in which they are capable of making measurements. Those thermometers that can measure temperature in ranges beyond this interval generally have larger measurement uncertainty in these ranges. 1.3 The digital thermometer sensors discussed are platinum resistance sensors, thermistors, and thermocouples. The range of use for these types of sensors is provided. The measurement uncertainty of a sensor is determined by its tolerance class or grade and whether the sensor has been calibrated. 1.4 This Guide provides a number of recommendations for the manufacture and selection of a digital thermometer. First, it recommends that the thermometer’s sensor conform to applicable ASTM specifications. Also, it recommends minimum standards for documentation on the thermometer and informational markings on the probe and measuring instrument. 1.5  The derived SI units (degrees Celsius) found in this Guide are to be considered standard. However, thermometers displaying degrees Fahrenheit are compliant with this guide as long as all other guidance is followed. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 7 on Hazards.

Standard Guide for Digital Contact Thermometers

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2012
实施

1.1 This specification covers the general requirements for Negative Temperature Coefficient (NTC) thermistor-type sensors intended to be used for laboratory temperature measurements or control, or both, within the range from −10 to 105°C. 1.2 This specification also covers the detailed requirements for ASTM designated sensors. 1.3 This specification also covers the requirements for general purpose, Negative Temperature Coefficient (NTC) thermistor-type sensors intended for use with Digital Contact Thermometers (also known as Digital Thermometers) within the range from –50 to +150°C. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Thermistor Sensors for General Purpose and Laboratory Temperature Measurements

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2012
实施

Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples

ICS
17.200.20
CCS
N11
发布
2012
实施

本规程适用于测量范围为(-2 000~2 000)Pa的倾斜式微压计的首次检定、后续检定和使用中检查。

Verification Regulation of Tilting Tube Micromanometers

ICS
CCS
N11
发布
2011-12-28
实施
2012-06-28

Food products. Checking the performance of moisture meters in use. Moisture meters for oilseeds

ICS
67.260
CCS
N11
发布
2011-11-30
实施
2011-11-30

本规程适用于测量范围在-100℃~600℃的棒式和内标式工作用玻璃液体温度计的首次检定、后续检定和使用中检查。包括一般用途玻璃液体温度计、石油产品试验用玻璃液体温度计、焦化产品试验用玻璃液体温度计。本规程不适用于外标式玻璃液体温度计。

Verification Regulation of Liquid-in-Glass Thermometers for Working

ICS
CCS
N11
发布
2011-09-20
实施
2012-03-20

本规范适用于医用饱和蒸汽热力灭菌设备温度计计量性能的校准。其他湿热灭菌设备温度计校准可以参照本规范。

Calibration Specification for Thermometers of Clinic Autoclave

ICS
CCS
N11
发布
2011-09-14
实施
2011-12-14

本规范适用于温度校准仪的校准。温度校准仪可以配接热电阻或热电偶以测量温度,也可以模拟热电阻、热电偶或过程信号的输出以校准温度二次仪表。 温度校准仪(以下简称校准仪)可以是多功能校准仪中的一部分。

Calibration Specification of Temperature Indicators and Simulators by Electrical Simulation and Measurement

ICS
CCS
N11
发布
2011-09-14
实施
2011-12-14

Technical performance test specification for constant temperature bath

ICS
CCS
N11
发布
2011-03-06
实施
2011-03-06

This guide provides guidelines and basic test methods for the accuracy verification of infrared thermometers. It includes test set-up and calculation of uncertainties. It is intended to provide the user with a consistent method, while remaining flexible in the choice of calibration equipment. It is understood that the uncertainty obtained depends in large part upon the apparatus and instrumentation used. Therefore, since this guide is not prescriptive in approach, it provides detailed instruction in uncertainty evaluation to accommodate the variety of apparatus and instrumentation that may be employed. This guide is intended primarily for calibrating handheld infrared thermometers. However, the techniques described in this guide may also be appropriate for calibrating other classes of radiation thermometers. It may also be of help to those calibrating thermal imagers. This guide specifies the necessary elements of the report of calibration for an infrared thermometer. The required elements are intended as a communication tool to help the end user of these instruments make accurate measurements. The elements also provide enough information, so that the results of the calibration can be reproduced in a separate laboratory. 1.1 This guide covers electronic instruments intended for measurement of temperature by detecting the intensity of thermal radiation exchanged between the subject of measurement and the sensor. 1.2 The devices covered by this guide are referred to as infrared thermometers in this document. 1.3 The infrared thermometers covered in this guide are instruments that are intended to measure temperatures below 1000°C, measure thermal radiation over a wide bandwidth in the infrared region, and are direct-reading in temperature. 1.4 This guide covers best practice in calibrating infrared thermometers. It addresses concerns that will help the user perform more accurate calibrations. It also provides a structure for calculation of uncertainties and reporting of calibration results to include uncertainty. 1.5 Details on the design and construction of infrared thermometers are not covered in this guide. 1.6 This guide does not cover infrared thermometry above 1000°C. It does not address the use of narrowband infrared thermometers or infrared thermometers that do not indicate temperature directly. 1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.8 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

Standard Practice for 65279; 65279;Calibration and Accuracy Verification of Wideband Infrared Thermometers

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2011
实施

1.1 This guide covers uniform methods for expressing temperature, temperature values, and temperature differences.1.2 This guide is intended as a supplement to IEEE/ASTM SI-10.

Standard Guide for Expression of Temperature

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2011
实施

Differential scanning calorimetric measurements provide a rapid, simple method for determining specific heat capacities of materials. Specific heat capacities are important for reactor and cooling system design purposes, quality control, and research and development. 1.1 This test method covers the determination of specific heat capacity by differential scanning calorimetry. 1.2 This test method is generally applicable to thermally stable solids and liquids. 1.3 The normal operating range of the test is from − 100 to 600 °C. The temperature range can be extended, depending upon the instrumentation and specimen holders used. 1.4 The values stated in SI units are to be regarded as the standard. 1.5 Computer or electronic-based instrumentation, techniques, or data treatment equivalent to this test method may be used. Note 18212;Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. It is the responsibility of the user of this test method to determine equivalency prior to use. 1.6 This method is similar to ISO 11357–4, but contains additional methodology not found in that method. Additionally, ISO 11357–4 contains practices not found in this standard. This method is similar to Japanese Industrial Standard K 7123, but contains additional methodology not found in that method. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 9.

Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry

ICS
17.200.10 (Heat. Calorimetry)
CCS
N11
发布
2011
实施

1.1 This specification contains reference tables (Tables 8 to 25) that give temperature-electromotive force (emf) relationships for Types B, E, J, K, N, R, S, T, and C thermocouples. These are the thermocouple types most commonly used in industry. The tables contain all of the temperature-emf data currently available for the thermocouple types covered by this standard and may include data outside of the recommended upper temperature limit of an included thermocouple type. 1.2 In addition, the specification includes standard and special tolerances on initial values of emf versus temperature for thermocouples (Table 1), thermocouple extension wires (Table 2), and compensating extension wires for thermocouples (Table 3). Users should note that the stated tolerances apply only to the temperature ranges specified for the thermocouple types as given in Tables 1, 2, and 3, and do not apply to the temperature ranges covered in Tables 8 to 25. 1.3 Tables 4 and 5 provide insulation color coding for thermocouple and thermocouple extension wires as customarily used in the United States. 1.4 Recommendations regarding upper temperature limits for the thermocouple types referred to in 1.1 are provided in Table 6. 1.5 Tables 26 to 45 give temperature-emf data for single-leg thermoelements referenced to platinum (NIST Pt-67). The tables include values for Types BP, BN, JP, JN, KP (same as EP), KN, NP, NN, TP, and TN (same as EN). 1.6 Tables for Types RP, RN, SP, and SN thermoelements are not included since, nominally, Tables 18 to 21 represent the thermoelectric properties of Type RP and SP thermoelements referenced to pure platinum. Tables for the individual thermoelements of Type C are not included because materials for Type C thermocouples are normally supplied as matched pairs only. 1.7 Polynomial coefficients which may be used for computation of thermocouple emf as a function of temperature are given in Table 7. Coefficients for the emf of each thermocouple pair as well as for the emf of most individual thermoelements versus platinum are included. Coefficients for type RP and SP thermoelements are not included since they are nominally the same as for types R and S thermocouples, and coefficients for type RN or SN relative to the nominally similar Pt-67 would be insignificant. Coefficients for the individual thermoelements of Type C thermocouples have not been established. 1.8 Coefficients for sets of inverse polynomials are given in Table 46. These may be used for computing a close approximation of temperature (°C) as a function of thermocouple emf. Inverse functions are provided only for thermocouple pairs and are valid only over the emf ranges specified. 1.9 This specification is intended to define the thermoelectric properties of materials that conform to the relationships presented in the tables of this standard and bear the letter designations contained herein. Topics such as ordering information, physical and mechanical properties, workmanship, testing, and marking are not addressed in this specification. The user is referred to specific standards such as Specifications E235, E574, E585/E585M, E608/E608M, E1159, or E2181/E2181M for guidance in these areas. 1.......

Standard Specification and Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2011
实施

1.1 The purpose of this standard is to specify liquid-in-glass ASTM thermometers using low hazard thermometric liquids defined in this standard. 1.2 This standard specifies liquid-in-glass thermometers graduated in degrees Celsius or degrees Fahrenheit that are frequently identified and used in methods under the jurisdiction of the various technical committees within ASTM. The current approved thermometers are listed in Table 1. 1.3 The technical requirements for the thermometric liquids used in the thermometers in Table 1 are specified in Annex A1. Tests for conformity to the technical requirements are also found in Annex A1. Note 18212;It has been found by experience that ASTM Thermometers, although developed in general for specific tests, may also be found suitable for other applications, thus precluding the need for new thermometer specifications differing in only minor features. However, it is suggested that technical committees contact E20.05 before choosing a currently designated thermometer for a new method to be sure the thermometer will be suitable for the intended application. 1.4 For full rationale, see Appendix X1. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2011
实施

The purpose of these test methods is to establish consensus test methods by which both manufacturers and end users may make tests to establish the validity of the readings of their radiation thermometers. The test results can also serve as standard performance criteria for instrument evaluation or selection, or both. The goal is to provide test methods that are reliable and can be performed by a sufficiently skilled end user or manufacturer in the hope that it will result in a better understanding of the operation of radiation thermometers and also promote improved communication between the manufacturers and the end users. A user without sufficient knowledge and experience should seek assistance from the equipment makers or other expert sources, such as those found at the National Institute of Standards and Technology in Gaithersburg, Maryland. Use these test methods with the awareness that there are other parameters, particularly spectral range limits and temperature resolution, which impact the use and characterization of radiation thermometers for which test methods have not yet been developed. Temperature resolution is the minimum simulated or actual change in target temperature that results in a usable change in output or indication, or both. It is usually expressed as a temperature differential or a percent of full-scale value, or both, and usually applies to value measured. The magnitude of the temperature resolution depends upon a combination of four factors: detector noise equivalent temperature difference (NETD), electronic signal processing, signal-to-noise characteristics (including amplification noise), and analog-to-digital conversion “granularity.” Spectral range limits are the upper and lower limits to the wavelength band of radiant energy to which the instrument responds. These limits are generally expressed in micrometers (μm) and include the effects of all elements in the measuring optical path. At the spectral response limits, the transmission of the measuring optics is 5 % of peak transmission (see Fig. 1).1.1 The test methods described in these test methods can be utilized to evaluate the following six basic operational parameters of a radiation thermometer (single waveband type):

Standard Test Methods for Radiation Thermometers (Single Waveband Type)

ICS
17.200.20
CCS
N11
发布
2011
实施

A thermocouple connector, exposed to a temperature difference, contributes to the output of a thermocouple circuit. The output uncertainty allocated to the connector depends on the connector design and temperature gradient. Connector performance can be classified based on the results of this method and used as nbsp;nbsp;nbsp;part of a component specification. The method can be used as an engineering tool for evaluating different connector designs tested under similar thermal conditions.1.1 This standard describes a thermal emf test method for base-metal thermocouple connectors including Types E, J, K, N and T. Standard connectors such as found in Specifications E1129/E1129M and E1684 as well as non-standard connector configurations and connector components can be evaluated using this method. 1.2 The measured emf is reported as an equivalent temperature deviation or error relative to a reference thermocouple of the same type. This method can be used to verify deviations introduced by the connector greater than or equal to 1°C. 1.3 The connector is tested with thermocouple contacts axially aligned with a temperature gradient using a specified thermal boundary condition. The actual temperature difference developed across the connector and corresponding error will depend on the connector design. 1.4 Connector contacts are often fabricated from raw materials having temperature-emf relationships in accordance with Specification E230. However, verifying Specification E230 tolerances is not within the scope of this method. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Evaluating Thermal EMF Properties of Base-Metal Thermocouple Connectors

ICS
17.200.20 (Temperature-measuring instruments)
CCS
N11
发布
2011
实施



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