JUMO 705021 mTRON T - Analog Input Module, 8-Ch. Operating Manual - Manual (Page 33)

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6 Configuration
Offset type
To offset plant-specific deviations, the measured value can be offset for each analog input.
When doing this, the offset type is used to specify the type of measured value offset.
"Standardized" offset type: The measured value is offset after linearization (temperature value
in °C or °F).
"Physical" offset type: The physical measured value is offset before linearization (resistance
in ohms).
A typical application scenario for the "physical" offset type is compensation of the lead wire re-
sistance when using an RTD temperature probe.
Offset
A positive or negative form of the correction value is added to the measured value (entering a
negative correction value reduces the measured value).
Filter time constant
The filter time constant is used to adjust the digital input filter (2nd order filter). If the input signal
changes suddenly, approx. 26 % of the change is recorded following a period that corresponds
to the filter time constant (2 × filter time constants: approx. 59 %; 5 × filter time constants:
approx. 96 %). A large filter time constant means a high level of attenuation of interference sig-
nals, a slow reaction time of the actual value display, and low limit frequency (low-pass filter).
Status after change of configuration
The input values before the change of configuration are not saved; the new input values are
available approx. 2 seconds after the change of configuration.
Behavior after power on
All analog inputs are initialized and start their measurements over (no statuses are saved with
power off).
Offset type Type of measured value offset
Standardized Offset of standardized measured value
(after linearization)
Physical Offset of physical measured value
(before linearization)
Offset -100 to 0 to +100 Correction value
Filter time con-
stant 0 s to 0.6 s to 100 s Time constant for adjusting the digital
input filter (0 s = filter off)
Parameter Selection/settings Description
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