Advanced Functions - Siemens SITRANS TH100 Operating Instructions Manual

Parameter assignment
9.1 Overview of parameters and functions
Functional Safety
The following additional functionality is available for devices with Functional Safety:
Functional Safety
Enable and disable Functional Safety
9.1.2

Advanced functions

Description
Function
Difference
Average value measurement
Max.
Min.
Sensor drift
Redundancy (hot backup)
User-specific linearization - Callendar-
Van Dusen coefficients
Custom type - Linearization table
Custom type - Spline curve
Operating hours counter - Transmitter
electronics
Operating hours counter - Sensors
Peak values - Transmitter electronics
Peak values - Sensors
136
SIMATIC PDM
Menu command "Device >
Functional Safety"
Description
The analog output signal is proportional to the difference between the measured
values of sensors 1 and 2.
The analog output signal is proportional to the average value of the measured values
of sensors 1 and 2.
The analog output signal is proportional to the sensor with the highest value.
The analog output signal is proportional to the sensor with the lowest value.
When the difference of the measured values between sensor 1 and sensor 2 exceeds
a defined limit, a sensor drift warning or sensor drift error is displayed.
The analog output signal is proportional to the primary sensor (sensor 1 or sensor 2)
as long as no error is detected and the input is within the user-defined limit. If an error
is detected at the primary sensor or the sensor 1 value is outside the user-specific
limit, the analog output signal becomes proportional to the redundant sensor (sen‐
sor 1 or sensor 2) and a warning is generated.
Supports the change of the Callendar-Van Dusen coefficients.
Supports the input of up to 60 breakpoints.
Supports the input of up to 40 breakpoints.
Recording of the internal transmitter temperatures during operation, recording time
in each of 9 fixed sub-temperature ranges.
Recording of the sensor measuring temperatures during operation, recording time in
each of 9 fixed sub-temperature ranges.
The subranges are specified separately for each sensor type.
Recording of the minimum and maximum internal transmitter temperature across
the entire device lifetime.
The recording of the min./max. measured values of the sensor(s) is saved. When the
measurement configuration is changed, the values are reset.
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Device with display
(local operation)
Functional Safety Manual (Page 23)
Operating Instructions, 05/2020, A5E41864807-AB