AXL F UTH4 1H
8672_en_02 PHOENIX CONTACT 9
5.4 Temperature and drift response
1. The data refers to nominal operation (U
A
=24V) in the
preferred mounting position (horizontal).
2. The measurement is performed within an AxiolineF sta-
tion in which another AXLFUTH41H module is located
to the right and left of the module in question.
3. The drift values refer to the full measuring range final
value, i.e.,1372°C in the case of TC sensor
typeK,+400°C in the case of the external Pt100, and
+100mV in the case of the linear voltage.
5.5 Tolerances for TC sensor typeK with internal
cold junction compensation
MRFV= Measuring range final value
The tolerances of the thermocouple inputs (TC sensors) are
based on absolute temperature recording during nominal
operation in the preferred mounting position.
5.6 Notes on the tolerance tables
The following notes apply for the tables:
– Tolerances of the measuring inputs at T
A
=+25°C
– Tolerances for TC sensor typeK with internal cold junc-
tion compensation
1. The measurement is performed within an AxiolineF sta-
tion in which another AXLFUTH41H module is located
to the right and left of the module in question.
2. In order to achieve optimum accuracy in the various
mounting positions of the station, different installation
positions can be configured.
3. The tolerance values for the TC inputs are based on the
average basic values for sensitivity (see table for mea-
suring ranges of the TC inputs).
4. The typical values were determined from the maximum
tolerances of the measured practical values.
5. The maximum tolerances represent the worst-case
measurement inaccuracy. They contain the theoretical
maximum possible tolerances in the measuring ranges
as well as the theoretical maximum possible tolerances
of the test and calibration equipment. The data is valid
for at least 24months from delivery of the module.
Thereafter the modules can be recalibrated by the man-
ufacturer at any time.
6. An additional path calibration function for maximum ac-
curacy is possible at any time in the application (see ob-
ject 008F
hex
path calibration values). Using the
temperature offset, you can finely tune the tolerances
for each channel by means of the connecting cables
and the sensors. The specified tolerances are then re-
duced accordingly.
7. The tolerances increase slightly for a short time immedi-
ately after power up (see switch-on behavior section).
8. In the -100mV ... +100mV linear voltage input range,
smaller measuring windows with closer tolerances were
also specified. The reference value of the relative toler-
ance value is always based on +100mV.
9. Please note when using linear voltage signals: for volt-
ages above +32.7mV and below -32.7mV, parameter-
ize the process data resolution as 10µV/LSB (instead
of 1µV/LSB) in order to prevent overrange or under-
range messages from occurring.
10. Always position temperature modules at the end of the
station. For modules that must be positioned next to a
bus coupler, the typical measuring tolerance can be in-
creased by up to 0.9K.
11. The maximum tolerances are observed even in the
event of electromagnetic interference (see also Table
"Tolerances influenced by electromagnetic interfer-
ence"). They apply for both shielded and unshielded I/O
cables.
Measuring
range
Drift
Typ. Max.
External Pt 100 -100 °C...+400
°C
±15 ppm/K ±30ppm/K
-
100°C...+100°
C
±10ppm/K ±25 ppm/K
Linear voltage -10mV ...
+10mV
±3ppm/K ±12ppm/K
-30mV ...
+30mV
±6ppm/K ±15 ppm/K
-100 mV ... +100
mV
±11ppm/K ±20 ppm/K
±5 V voltage input ±13ppm/K ±25 ppm/K
TC inputs Type K ±8ppm/K ±20 ppm/K
No. Tem-
pera-
ture
Absolute toler-
ance
Relative tolerance
(with reference to
MRFV)
Typ. Max. Typ. Max.
1 +25°C ±0.20K±2.4K ±0.01% ±0.17%
2 -25°C ...
+60°C
±0.71K ±3.9K ±0.05 % ±0.28%
Please observe the notes in the "Notes on the
tolerance tables" section.
