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Adapters (AT)
Adapters (AT)
Adapter AT is a connecting element with different-type connectors at the ends of extension wire. Adapter allows to plug thermocouples and resistance thermometers in measuring line or instrument.
Adapters designed for operation with reference thermocouples are supplied with initial calibration for compliance with GOST 8.338 requirements to extension wires.
Thermocouple connectors of adapter correspond to standards ASTM E1684 и ASTM E1129, and have error not more than 1,1°С under connector temperature difference equal to 40°С. The error is reduced in proportion to connector temperature difference reduction.
Tolerance class: k0, k1, k2 (for thermocouple adapter)
Note. In compliance with item 5.2 of GOST 8.338-2002 under operating and free adapter end temperature equal to 100°С and 0°С correspondingly, thermo-emf value should not deviate from NSC values for more than ±0,2·DADD, where DADD – maximum permissible NSC deviation of 1-class wires according to IEC 60584-3. For class 0 adapters NSC deviation does not exceed values given in the table:
TC type |
L |
J |
K |
N |
TC(S), TC(R) |
|
±0,2 Dadd, °С |
± 0,5 |
± 0,3 |
± 0,3 |
± 0,3 |
± 0,3 |
Protection rate according to GOST 14254-96 (IEC 60529): IР40
Operating temperature range: -40 to +200°С
|
Adapter |
Design modification |
Wire length, L, mm |
|
|
end elements |
wire |
||
|
ATK, ATN, ATJ, ATT |
00, 01, 02, 03, 04, 12, 14, 23, 34 |
50, 60 |
1600; 2500; 4000; 5000; 8000 |
|
ATL |
00 |
60, 70 |
|
|
ATC |
00, 01, 02, 03, 04, 12, 14, 23, 34 |
50, 60, 72 |
|
Examples of adapter design modifications
|
Modification |
Description |
|
|
0151 |
|
adapter with 51 wire, free end (0),miniature socket (1) |
|
1260 |
|
adapter with socket 1 and miniature plug 2; from wire 60 |
|
0061 |
|
adapter without plugs (00) from wire 61 |
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Adapter designation code
|
AT |
K |
¾ |
0 |
1 |
51 |
¾ |
k1 |
|
¾ |
1600 |
|
1 |
2 |
|
3 |
4 |
5 |
|
6 |
7 |
|
8 |
|
Field no. |
Structure |
Field code |
Designation |
|
1 |
Name |
AT |
thermocouple adapter |
|
2 |
adapter type |
С |
for resistance thermometer |
|
K |
for chromel-alumel thermocouple |
||
|
N |
for nichrosil-nisil thermocouple |
||
|
J |
for iron-constantan thermocouple |
||
|
L |
for chromel-copel thermocouple |
||
|
TT |
for platinum-rhodium/platinum thermocouple |
||
|
3 |
First end communicating element |
0 |
free wire end |
|
1 |
miniature socket |
||
|
2 |
miniature plug |
||
|
3 |
standard socket |
||
|
4 |
standard plug |
||
|
4 |
Second end communicating element |
0 |
free wire end |
|
1 |
miniature socket |
||
|
2 |
miniature plug |
||
|
3 |
standard socket |
||
|
4 |
standard plug |
||
|
5 |
Wire version (see "Alternative designs" table, pages 1-11) |
50 |
Stranded conductor, silicon / shield / silicon insulation - shield is insulated from sensor body and does not have a terminal |
|
60 |
Stranded conductor, PTFE / shield / PTFE insulation - shield is insulated from sensor body and does not have a terminal |
||
|
70 |
stranded conductor, conductor insulation and outer glass filament sheath / outer galvanized steel armour |
||
|
6 |
Tolerance class |
|
is not specified for resistance thermometers |
|
k0 |
for adapters that passed verification of compliance to GOST 8.338-2002 requirements to extension wires |
||
|
k1 |
for adapters with extension wires corresponding to 1 tolerance class according to IEC 60584-3 |
||
|
k2 |
for adapters with extension wires corresponding to 2 tolerance class according to IEC 60584-3 and L modification |
||
|
7 |
Connection diagram |
|
is not specified for thermocouples |
|
2, 3, 4 |
double-, three- ot four-wire for resistance thermometers |
||
|
8 |
Probe length |
L |
dimensions in mm |
ATN 1451 – c0 – 2500– adapter for N-type thermocouple, modification 1451 with miniature socket and standard plug (14), extension wire (51) with conductor insulation and outer sheath made of silicon rubber, inner shield made of tinned copper wire, tolerance class 0, mounting length 2500 mm.
ATK 0061 – c2 – 4000– adapter for K-type thermocouple, modification 0061 without connectors (00), extension wire (61) with conductor insulation and outer PTFE sheath, inner shield made of tinned copper wire, tolerance class 2, mounting length 4000 mm.
ATC 1453 – 4 – 2500– adapter for resistance thermometer, modification 1453 with miniature socket (1) and standard plug (4), extension wire (53) with conductor insulation and outer sheath made of silicon rubber, inner shield made of tinned copper wire, for four-wire wiring diagram of resistance thermometer (4), mounting length 2500 mm.