Fluke 51 Series User Manual

Measuring Temperatures

11

To change the thermocouple type, see “Changing Setup
Options.” The North American ANSI Color Code is:

J

K

E

T

N

Black

Yellow

Purple

Blue

Orange

1.  Plug a thermocouple into the input connector(s).

(Make sure that the polarity is correct.)

2.  Set the thermometer for the correct thermocouple

type.

1.  Press 

C

 to select the correct temperature scale.

2.  Hold or attach the thermocouple(s) to the

measurement location.

The temperature reading appears in the primary
display.

3. 

Model 52: Press 

T

 to toggle between showing the

T1, T2, and T1-T2 readings in the primary or
secondary display.

Notes

The display shows "- - - -"  when a thermocouple
is not connected.

The display shows 

0L

 (overload) when the

temperature being measured is outside the
thermocouple’s valid range.

Model 52: If only thermocouple T2 is connected,
the T2 reading appears in the primary display.