User`s guide

Remarks
For temperature measurements, the instrument internally selects the
range−you cannot select the range to be used. The range ("1" is the only
allowed value) is used only in conjunction with resolution to determine
NPLC.
The range ("1") and <resolution> parameters are optional. However, if you
specify <resolution>, you must also specify "1" as the implied range
parameter (see syntax above). For example:
MEAS:TEMP? THER,5000,1,0.1
specifies range = 1 and resolution = 0.1 degrees (°C, °F, or K, whichever
is currently selected).
To change temperature units, use the UNIT:TEMPerature command.
For thermistor and RTD measurements, the instrument autoranges to the
correct range for the transducer resistance measurement.
For 4-wire RTD or thermistor measurements, the instrument always
enables the autozero function.