9. Specifications
The combinations of a 2-wire connection with class A or class AA are not permissible,
since the lead resistance of the MIMS cable and the connection lead negates the higher
sensor accuracy.
Maximum probe length including connection cable:
EN
Class B, 3-wire connection:
■
Class A, 3-wire connection:
■
Class AA, 3-wire connection:
■
Longer probe/cable lengths should be designed with a 4-wire connection, since this
connection method has no length effect on the accuracy.
→ For detailed specifications for Pt100 sensors, see technical information IN 00.17 at
www.wika.com.
The table shows the temperature ranges listed in the respective standards, in which the
tolerance values (class accuracies) are valid.
Measuring element of thermocouple
Type of the measuring
element
Probe tip design (measuring
location)
Validity limits of the class accuracy in accordance with IEC 60584-1
Type K
Type J
Type E
Type N
Type T
30
30 m [98 ft]
~
10 m [33 ft]
~
3 m [10 ft]
~
Thermocouple per IEC 60584-1 or ASTM E230
Types K, J, E, N, T
Ungrounded (measuring
location welded isolated,
standard)
Thermocouple
Class 2
Class 1
Class 2
Class 1
Class 2
Class 1
Class 2
Class 1
Class 2
Class 1
WIKA operating instructions, models TR10-L, TC10-L, TR10-0, TC10-0 (Ex d)
Grounded (measuring
location not isolated, welded
to the bottom)
Measuring location
Thermocouple
Sheath
-40 ... +1,200 °C [-40 ... +2,192 °F]
-40 ... +1,000 °C [-40 ... +1,832 °F]
-40 ... +750 °C [-40 ... +1,382 °F]
-40 ... +750 °C [-40 ... +1,382 °F]
-40 ... +900 °C [-40 ... +1,652 °F]
-40 ... +800 °C [-40 ... +1,472 °F]
-40 ... +1,200 °C [-40 ... +2,192 °F]
-40 ... +1,000 °C [-40 ... +1,832 °F]
-40 ... +350 °C [-40 ... +662 °F]
-40 ... +350 °C [-40 ... +662 °F]
Measuring location
Sheath