TTH300
| OI/TTH300-EN Rev. D 13
4.1.3
Sensor error adjustment according to Callendar-
Van Dusen
Under normal circumstances, the standard Pt100
characteristic curve is used for resistance thermometer
measurement.
However, recent advances in technology now mean that
maximum measuring accuracy can be achieved where
necessary by carrying out individual sensor error adjustment.
Sensor characteristic curves are optimized by using a Pt100
polynomial in accordance with IST-90 / IEC 751, and
EN 60150, and by applying A, B, C, or Callendar-Van Dusen
coefficients.
The DTM or EDD can be used to set and store these sensor
coefficients (Callendar-Van Dusen) in the transmitter as a CVD
characteristic curve. Up to five different CVD characteristic
curves can be stored for HART and PROFIBUS PA, and up to
two can be stored for FOUNDATION Fieldbus.
5
Product identification
5.1
Name plate
NOTE
Products that are marked with this symbol may
not be disposed of through municipal garbage
collection points.
NOTICE
The ambient temperature range on the name plate (10) refers
only to the transmitter itself and not to the measuring
element used in the measuring inset.
For devices with PROFIBUS PA or FOUNDATION Fieldbus,
the device-ID is also specified.
Fig. 7:
HART name plate (example)
Fig. 8:
PROFIBUS PA name plate (example)
Fig. 9:
FOUNDATION Fieldbus name plate (example)
1
Please pay attention to the manufacturer, manufacturer address,
manufacturing status, production year
2
Observe product
documentation
3
Safety integrity level (optional)
4
Model number
5
CE-symbols (EU conformity), if nothing is mentioned on the
additional label
6
Hardware and Software Version
7
Order
number
8
TAG
-
Number (optional)
9
Customer configuration
j
Ambient temperature range
k
Supply voltage range, typical
current range, Log
l
Serial number
m
Order number
Devices with an explosion-proof design are marked with the
following special data plate.
Fig. 10: Special data plate for explosion-protected apparatus
(example)
1
Model number
2
Temperature class Ex-Execution
3
CE-symbols (EU conformity) and specific designations of the
quality assurance
4
Safety class Ex-execution
5
Ex-identification
A11241
1
3
4
5
8
9
j
m
l
k
2
6
7
A11242
A11243
A11240
5
1
3
4
2
