ASTM E1-98e1

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Designation:E1–98 Method 9501—Federal Test
Method Standard No. 791b
Standard Specification for
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ASTM Thermometers
This standard is issued under the fixed designation E 1; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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e NOTE—Figures 1–14 were editorially rearranged to match how they were published in E 1–95. Note 7 was added editorially.
1. Scope E 344 Terminology Relating to Thermometry and Hydrom-
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etry
1.1 This specification covers liquid-in-glass thermometers
graduated in Celsius (centigrade) or Fahrenheit degrees which
3. Terminology
are frequently specified in methods of ASTM. The various
3.1 Definitions—The definitions given in Terminology
thermometers covered are listed in Table 1. The designation of
E 344 apply.
an IP number in Table 1 indicates, where appearing, that the
3.2 Definitions of Terms Specific to This Standard:
thermometer specification has been jointly agreed upon by the
3.2.1 adjusting device, n—a section of the instrument used
British Institute of Petroleum (IP) and ASTM.
to adjust the amount of mercury in the bulb and main capillary
1.2 This specification also covers adjustable-range
to that needed for the intended temperature interval.
enclosed-scale thermometers, graduated in Celsius (centigrade)
3.2.2 bulb length, n—the distance from the bottom of the
degrees, which are specified in methods of ASTM.
bulb to the junction of the bulb and the stem tubing.
1.3 The enclosed-scale thermometers are commonly called
3.2.3 contraction chamber, n—an enlargement of the cap-
Beckmann thermometers. They are suitable for measuring
illary, that will appear below the main scale or between the
small temperature differences not exceeding 6 °C within a
main scale and the auxiliary scale, which serves to reduce its
larger range of temperature. The thermometers are unsuitable
length or to prevent contraction of the liquid column into the
for measuring Celsius- or kelvin-scale temperatures unless they
bulb.
have been compared with standard instruments immediately
3.2.4 diameter, n—the largest outside dimension of the
before use.
glass as measured with a ring gage.
1.4 An alphabetic list of the ASTM Thermometers included
3.2.5 expansion chamber, n—an enlargement at the top of
in this standard is given in Table 2.
the capillary to provide protection against breakage caused by
1.5 A list of ASTM Thermometers is given in Table 3 to
excessive gas pressure.
facilitate selection according to temperature range, immersion,
3.2.6 interval error, n—the deviation of the nominal value
and scale-error requirements.
of a temperature interval from its true value; either for the total
NOTE 1—For a listing of thermometers recommended for general
range (total interval) or for a part of the range (partial interval).
laboratory use, the Scientific Apparatus Makers Assn. Specifications for
3.2.7 saddle, n—the bottom support of the enclosed scale.
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General Purpose Glass Laboratory Thermometers may be consulted.
3.2.8 setting temperature, n—the temperature that yields a
NOTE 2—It has been found by experience that these ASTM Thermom-
reading of zero on the main scale for a given adjustment of the
eters, although developed in general for specific tests, may also be found
amount of mercury in the bulb and main capillary.
suitable for other applications, thus precluding the need for new thermom-
eter specifications differing in only minor features.
3.2.9 top of the thermometer, n—the top of the finished
instrument.
2. Referenced Documents
3.2.10 total length, n—the distance from the bottom of the
2.1 ASTM Standards:
bulb to the top of the finished thermometer, including any
E 77 Test Method for Inspection and Verification of Ther-
special finish at the top.
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mometers
3.2.11 Other descriptions of terms shall be in accordance
with the Terminology section of Test Method E 77.
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This specification is under the jurisdiction of ASTM Committee E20 on
Part A—Solid-Stem Thermometers
Temperature Measurement and is the direct responsibility of Subcommittee E20.05
on Liquid-in-Glass Thermometers and Hydrometers.
4. Specifications
Current edition approved Nov. 10, 1998. Published March 1999. Originally
published as E 1–39T. Last previous edition E 1–95.
4.1 The individual thermometers shall conform to the de-
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Available from SAMA Group of Assocs., 225 Reinekers, Ste. 625, Alexandria,
tailed specifications given in Table 1 and to the general
VA 23314.
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requirements specified in Sections 5-13.
Annual Book of ASTM Standards, Vol 14.03.
Copyright © ASTM, 100 Barr
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