Agilent Technologies U2802A - Manual (Page 61)

Product Specifications 4
Agilent U2802A 31-Channel Thermocouple Input User’s Guide 51
Making Accurate Temperature Measurements
Thermocouple measurement accuracy is very sensitive to cold junction
sensor errors and temperature gradients across the terminals. Keep the
module away from any heat sources and drafts to minimize any variation
between channels.
The channels located closest to the center near the reference thermistor
will have the best accuracy. It is important to use channels that are
physically close together on the screw terminals when taking relative
measurements. Channels that are closest together will have the best
agreement.
U2802A_UG.book Page 51 Friday, November 25, 2011 10:57 AM