Agilent Technologies U2802A manual System Accuracy Specifications

Product Specifications 4

System Accuracy Specifications

The Agilent U2802A thermocouple input measurement accuracy with the U2355A and U2356A is as shown in Table 4- 1, Table 4- 2, and Table 4- 3.

N O TE	• Assume a ±1 °C error in the CJ measurement due to sensor error and temperature
	gradient error in the accuracy numbers in Table 4-1, Table 4-2, and Table 4-3 below.
	• Table 4-1, Table 4-2, and Table 4-3 are derived from the U2802A and DAQ input accuracy
	specifications without including the thermocouple error. Refer to “Calculating System
	Accuracy” on page 54 for calculation methodology.
				Thermocouple Measurements Accuracy
					(U2355A, U2356A @ 23 °C ± 5°C)
		ITS-90			Optimum		Without	50 points	500 points
	T/C	Temperature			Measurement
							averaging	averaging	averaging
	Type	Range (°C)			Range(°C)
							(± °C)	(± °C)	(± °C)
		Low	High		Low	High
	B	0	1820		1100	1820	1.9	1.2	1.0
					400	1100	4.4	2.5	2.0
	E	–270	1000		–150	1000	1.7	1.6	1.6
					–200	–150	2.4	2.3	2.3
	J	–210	1200		–150	1200	1.6	1.5	1.5
					–210	–150	2.7	2.6	2.5
	K	–270	1372		–100	1200	1.5	1.4	1.4
					–200	–100	2.7	2.6	2.6
	N	–270	1300		–100	1300	1.5	1.3	1.3
					–200	–100	3.0	2.7	2.6
	R	–50	1768		300	1760	2.0	1.4	1.3
					–50	300	5.0	3.1	2.6
	S	–50	1768		400	1760	2.1	1.6	1.4
					–50	400	4.5	2.8	2.4
	T	–270	400		–100	400	1.5	1.4	1.4
					–200	–100	2.7	2.5	2.5

Table 4-1U2802A measurement accuracy with U2355A or U2356A, at 23 °C ± 5 °C, with different number of averaging points.

Agilent U2802A 31-Channel Thermocouple Input User’s Guide 51