ASTM E1129/E1129M-98(2002)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E 1129/E 1129M – 98 (Reapproved 2002)
Standard Specification for
Thermocouple Connectors
This standard is issued under the fixed designation E 1129/E 1129M; 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.
1. Scope 3.2.1 connector pair, n—an assembly consisting of a plug
and a jack, each having both positive and negative inserts, that
1.1 This specification covers separable single-circuit ther-
will connect two parts of an electrical circuit and provide a
mocouple connectors with two round pins. Connectors covered
means of physically disconnecting the two parts without the
by this specification must be rated for continuous use to at least
use of tools.
300 °F (150 °C), but they may optionally be rated higher.
3.2.2 contact insert, n—metallic conductor assemblies that,
1.2 This specification does not cover multiple-circuit con-
when installed in connector bodies, provide connections be-
nectors,multi-pinconnectors,miniatureconnectors,orconnec-
tween two parts of an electrical circuit. Plug connectors will
tors intended primarily for panel mounting. High temperature
contain projecting prong contacts, while jack connectors will
connectors (for example, those designed for continuous use at
contain recessed socket or receptacle contacts.
temperatures above approximately 500 °F (260 °C)) are not
3.2.3 service life, n—interval of time that a connector
intended to be covered by this specification.
assembly will be put to use and retain all physical and
1.3 The values stated in either inch-pound units or SI units
thermoelectric properties.
are to be regarded separately as standard.
3.2.4 test difference, n—apparent thermoelectric difference
1.4 The following precautionary statement pertains only to
attributable to mated connectors observed by the test procedure
the test method portion, Section 9, of this specification. This
of this specification.
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user
4. Significance and Use
of this standard to establish appropriate safety and health
4.1 The widespread use of thermocouple connectors re-
practices and determine the applicability of regulatory limita-
quires standardization of mating dimensions and performance
tions prior to use.
characteristics.
2. Referenced Documents 4.2 This specification describes standardized thermocouple
connector dimensions and capabilities and includes test proce-
2.1 The following documents of the latest issue form a part
dures suitable for evaluating the performance of a particular
of this specification to the extent referenced herein. In case of
specimen or design. The tests described are not intended for
conflict between this specification and another referenced
routineinspectionorrapidtestingoflargegroupsofconnectors
document, this specification shall take precedence.
or for quality control purposes.
2.2 ASTM Standards:
E 230 Specification and Temperature-Electromotive Force
5. Classification
(EMF) Tables for Standardized Thermocouples
5.1 Plugs or Jacks:
E 344 Terminology Relating to Thermometry and Hydrom-
2 5.1.1 Connectors shall be constructed as either plugs or
etry
jacks, and these two forms shall be designed to connect with
E 608 Specification for Mineral-Insulated, Metal-Sheathed
2 each other.
Base-Metal Thermocouples
5.1.2 Plug connectors shall have two external prong con-
3. Terminology tacts of differing diameters to prevent improper mating. The
negative prong shall be the larger, as shown inTable 1 and Fig.
3.1 Definitions: The definitions given in Terminology E 344
1.
shall apply.
5.1.3 Jack connectors shall have two internal socket con-
3.2 Definitions of Terms Specific to This Standard:
tacts sized and spaced to receive and accommodate the prong
contacts of the mating plug. Jack connectors shall also include
This specification is under the jurisdiction of ASTM Committee E20 on
a means of producing and maintaining sufficient contact
Temperature Measurement and is the direct responsibility of Subcommittee E20.04
pressure to meet all of the other requirements of this specifi-
on Thermocouples.
cation.
Current edition approved Oct. 10, 2002. Published May 2003. Originally
approved in 1986. Last previous edition approved in 1998 as E 1129 – 98.
Annual Book of ASTM Standards, Vol 14.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E 1129/E 1129M – 98 (2002)
TABLE 1 Dimensions
5.2.2 The insert materials of each plug and jack shall have
Minimum, Maximum, thermoelectric properties conforming to the characteristics of
A
Dimension Symbol
in. (mm) in. (mm)
the corresponding thermocouple type as given in Specification
Body length L . 1.505 (38.23)
E 230 over the temperature range specified in Table 3.
Body width W . 1.088 (27.64)
5.2.3 Calibration conformance and gradient testing is not
Body thickness T . 0.515 (13.08)
applicable to Type B thermoelectrically neutral (Cu/Cu) con-
Length of prong P 0.535 0.650 (16.51)
(13.59)
nectors.
Depth of socket J 0.650 .
(16.51)
6. Ordering Information
Prong spacing X 0.432 0.442 (11.23)
(10.97)
6.1 Orders for connectors under this specification shall
Positive pin D1 0.152 (3.86) 0.158 (4.02)
include the following:
diameter
Negative pin D2 0.182 (4.62) 0.190 (4.83)
6.1.1 Quantity of plugs or jacks (specify which),
diameter
6.1.2 ANSI/ASTM thermocouple type (see Table 2),
Location of detent E 0.180 (4.57) 0.200 (5.08)
6.1.3 Anyoptionalaccessoriesthatmayberequired,suchas
Width of detent G 0.040 (1.02) .
Depth of detent F 0.010 (0.25) 0.025 (0.64)
those listed in 7.4.3,
A
Symbols are according to Fig. 1.
6.1.4 Special testing requirements, and
6.1.5 Requirements for certificates of conformance to the
specifications or reports of the results of any required testing.
7. Materials and Manufacture
7.1 Body:
7.1.1 The dimensions of the connector bodies shall fall
within the limits given in Table 1.
7.1.2 The connector body shall be made of an electrically
insulating material capable of continuous use at any tempera-
ture between 0 °F (-18 °C) and 300 °F (150 °C) for the service
life given in Table 3, without losing its ability to conform to
this specification.
7.1.3 The connector bodies shall be colored in accordance
with the color code given in Table 2 to provide rapid and
permanent identification of the thermocouple calibration with
which it is designed to be used. Each plug and jack shall be
permanently marked with a symbol or symbols to identify
positive and negative conductor inserts. All connectors shall
bear the supplier’s name or other means of source identifica-
tion, unless otherwise specified in the purchasing documents.
7.1.4 An insulating barrier shall be incorporated into each
connector body to prevent inadvertent contact between ther-
moelements or wires.
7.2 Inserts:
NOTE—A solid prong is shown for clarity of design.
7.2.1 Contact inserts may be either solid or hollow as long
FIG. 1 Thermocouple Connector Dimensions, (see Table 1)
as all of the requirements of this specification are met.
5.2 ANSI/ASTM Type:
5.2.1 Connectors shall be produced in versions to match
TABLE 3 Ratings
each of the standardized ANSI/ASTM thermocouple types as
Characteristic min max
given in Table 2.
Operating temperature 0 °F 300 °F
(−18 °C) (–150 °C)
Insertion force 6 lb 18 lb
TABLE 2 Identification
(27 N)
ANSI/ASTM Body Color (80 N)
Type Coding Withdrawal force 6 lb 18 lb
(27 N)
T Blue
(80 N)
J Black
Contact resistance (each leg) . 0.04 ohms
E Purple
Insulation resistance 10 ohms .
K Yellow
Test difference . 62°F
N Orange
(61.1 °C)
R or S Green
Repeated cycles (coupled or 25 .
A
B (Cu/Cu) White
uncoupled)
A
Service life 5000 h .
Uncompensated (Cu/CU) connectors are customarily used with Type B
thermocouples.
E 1129/E 1129M – 98 (2002)
7.2.2 Contact inserts shall be fabricated of materials that 9. Test Methods
meet the requirements of Section 5.
9.1 Contact Resistance Test:
7.2.3 The inside diameter and depth of the jack connector
9.1.1 A direct current of 1.0 A from a constant current
shall be such as to receive the corresponding plug prong
source shall be passed through one half (for example, the
smoothly and easily when inserted. A spring loaded detent
positiveleg)ofamatedconnectorpair.Thevolt
...