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23 Technical data
23.1 Analog inputs base unit
23.1.1 Temperature measuring input (IN 4)
Probe-/Signal type Connection type Measuring
range
Measuring accu-
racy
Ambient
temperature
influence
Pt100 DIN EN 60751 2-wire/3-wire -200 to +850 °C ≤ 0.05% of MR
a
a
MR: measuring range span
≤ 50 ppm/K
Pt1000 DIN EN 60751 2-wire/3-wire -200 to +850 °C ≤ 0.1% of MR
a
≤ 50 ppm/K
RTD temperature probe
with customer-specific
characteristic line
b
b
Customer-specific linearization can be used to enter a sensor characteristic line.
up to 400 Ω 2-wire/3-wire 0 to 400 Ω≤0.1% of R
max
c
c
R
max
: maximal resistance across the measuring range (400 Ω, or 4000 Ω)
≤ 100 ppm/K
to 4000 Ω 2-wire/3-wire 0 to 4000 Ω≤0.1% of R
max
c
≤ 100 ppm/K
Sensor lead resistance maximal 30 Ω per line with 3-wire circuit
Lead compensation Not required for 3-wire circuit. With a 2-wire circuit, lead calibration can
be executed at the respective input by means of an measured value cor-
rection with the aid of the "Offset" setting.
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