Sensor and Controller Catalog

Lab Services

Temperature Accuracy

Watlow ® uses a verification process at selected temperature points to assure wire and XACTPAK ® products conform to ASTM error limits. Samples are taken to the Watlow calibration laboratory and verified for accuracy with NIST traceable standards. Conformance to error limits is required at all test temperatures. The following charts provide the standard test temperatures by thermocouple type.

XACTPAK and Mineral Insulated (MI) Thermocouples

Standard Calibration Points °F*

Calibration

E

200, 600, 1000, 1600

J

200, 600, 1000, 1400

K

600, 1000, 1600, 2000

N

600, 1000, 1600, 2000

T

200, 400

SERV-RITE ® Insulated Wire

Standard Calibration Points °F*

Calibration

E

300, 500, 1000, 1600

J

200, 500, 1000, 1400

K

300, 500, 1000, 1600, 2000

N

300, 500, 1000, 1600, 2000

T

200, 500

EX

200, 400

JX

200, 400

KX

200, 300, 400

NX

200, 300, 400

RX

400

SX

400

TX

200

* Calibration is not made when temperature exceeds the sheath rating.

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