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ASTM-E2251:2011 Edition

ASTM-E2251:2011 Edition

$44.96

E2251-11 Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

Published By Publication Date Number of Pages
ASTM 2011 19
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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 1It 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Specifications
Type
Stem
Bulb
Capillary Clearances
Graduations and Inscriptions
3 Special Inscription
Permanency of Pigment
Bulb Stability
Scale Error
Case and Instructions
Methods of Verification and Calibration
4 TABLE 1
9 TABLE 2
TABLE 3
10 TABLE 4
11 Keywords
FIG. 1
12 FIG. 2
FIG. 3
FIG. 4
FIG. 5
13 A1. TECHNICAL REQUIREMENTS FOR THE THERMOMETRIC LIQUID
A1.1 Purpose
A1.2 Behavior of Liquid and Response Time
FIG. 6
FIG. 7
14 A1.3 Stability of the Thermometric Liquid (Decomposition)
A1.4 Permanency of Dye (as Applicable)
A1.5 Repeatability Requirements
15 A1.6 Reproducibility Requirements
A1.7 Coefficient of Thermal Expansion
A2. USE OF FADEN THERMOMETERS WITH EMERGENT STEM TEMPERATURE CORRECTIONS
A2.1 Specification for Faden Thermometer
A2.2 Use with Partial Immersion Thermometers
16 A2.3 Use with Total Immersion Thermometers Being Used as Partial Immersion
X1. RATIONALE
X1.1 History
X1.2 Specification for Liquids
X1.3 ASTM Designation
17 X2. SAMPLE USER INSTRUCTIONS
X2.1 General Instructions for Use
X2.2 Ice Point Readings
X2.3 Rejoining Liquid Column
18 X2.4 Use of Faden Thermometers to Determine Emergent Stem Temperature Corrections

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