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Section 1
1-9
Edition 3
Rev G
ACCURACY TABLES CONT.
NOTES: The table attempts to show the effect of each significant factor which contributes to the overall measurement error. See the
enumerated items below for more specific explanations of each column of data.
1. Reference Acc'y based on 0.025% (250ppm) of input voltage span.
2. Linearization Acc'y is based on conformance to NIST Monograph 175 (based on the ITS-90) for letter-designated thermocouple types,
or other industry standards for non letter-designated type TCs and all RTDs.
3. Factory Cal is defined by limits of repeatability in a manufacturing environment per the table for zero and span calibrations, and
±
0.15
°
C for thermocouple cold junction calibrations.
4. The REF + LIN + CAL column represents the total "static" error allowed for an instrument as produced by the manufacturing process.
5. Deviation Acc'y is derived from a temperature coefficient of 0.01%/
°
C or
±
100ppm/
°
C expressed in units of the corresponding range.
6. Resolution on thermocouples and RTDs is derived as a function of the input voltage range and dV/dT.
4
REF+LIN
+CAL
uV
3500
350
45
26
4
REF+CAL
uA
7
7
INPUT
TYPE
10V
1V
100mV
25mV
INPUT
TYPE
mA
See Note:
SPAN
mV
0/10000
0/1000
0/100
0/25
See Note:
SPAN
mA
4/20
0/20
1
REF
ACC'Y
uV
2500
250
25
6
1
REF.
ACC'Y
uA
5
5
3
FACTORY
CAL
uV
1000
100
20
20
3
FACTORY
CAL
uA
2
2
5
DEVIATION
ACC'Y
uV
1000
100.0
10.0
2.5
5
DEVIATION
ACC'Y
uA/°C
2.0
2.0
6
RESOL
°C/bit
381
38.1
3.81
0.954
6
RESOL.
uA/bit
0.763
0.763