WIKA T32.xS - Manual (Page 12)

GB
12
11583631.03 08/2014 GB/D/F/E
WIKA safety manual temperature transmitter T32.xS
2.6 Accuracy of the safe measuring function
The following information on the total safety accuracy contains the following
components:
■ Basic accuracy (measuring deviation from input and output, and the linearity error
of the transmitter)
■ For thermocouples, additionally, the internal cold junction compensation (CJC),
except for type B thermocouples
■ Influence of the ambient temperature in the range -50 ... +85 °C
The defined value for the total safety accuracy for the safety function of this instrument
depends on the chosen sensor type and also the configured measuring span (see
following table).
Up to the minimum spans given in the table, the total safety accuracy is 2 % of the
measuring span with respect to the current output signal of 16 mA.
Otherwise, the absolute values given directly in the table are valid.
CAUTION!
The measuring span is the difference between the full scale value and the
initial value of a measuring range.
Sensor
type
Permissible sensor
range for the accuracy
specifications
Min. span for
2 % total safety
accuracy
Absolute total safety
accuracy of smaller
measuring spans
Pt100 -200 ... +850 °C 84 K
2 K JPt100 -200 ... +500 °C 50 K
Ni100 -60 ... +250 °C 21 K
Pt1000
-200 ... +850 °C
69 K 2 K
Pt500 70 K 2 K
Pt25 134 K 3 K
Pt10 241 K 5 K
TC type T -150 ... +400 °C 134 K
3 K TC type L -150 ... +900 °C 138 K
TC type U -150 ... +600 °C 136 K
TC type E -150 ... +1,000 °C 164 K
4 K
TC type J -150 ... +1,200 °C 176 K
TC type K -140 ... +1,200 °C 197 K
TC type N -150 ... +1,300 °C 154 K
TC type R +50 … +1,600 °C 255 K
6 K TC type S +50 … +1,600 °C 273 K
TC type B +500 …+1,820 °C 283 K
2. Safety