HND-T205
HND-T205 K05/0422
page 9
Set Clock: Setting Of Real Time Clock
HH:MM
Clock: Setting of time hours:minutes
7.6.9
YYYY
Year
TT.MM
Date: day.month
(*)
If the logger memory contains data already, the menus/parameters marked
with (*) can not be invoked! If these should be altered the logger memory
has to be cleared before!
Hint: The settings will be set to the settings ex works, if keys ‘Set‘ and
‘Store‘ are pressed simultaneously for more than 2 seconds.
7.6 Special Functions
7.6.1
Display Resolution
Standard setting: 'Auto', i.e. the device automatically switches over to the
optimum resolution between .01° and 0.01°.
If temperatures to be measured are near the switching threshold, a fixed
resolution may be better, e.g. for easy recording. In such a case please select the
optimum resolution manually.
7.6.2
User Sensor Curve ('Lin USEr')
By means of this function besides the standard conversion of resistance to
temperature following EN60751 (Lin E.751) also other curves can be used. The
user sensor curve can be read and edited by configuration software. The
standard setting ex works is also set to the EN60751 data. The curve is defined
by a table with two columns (input resistance [Ohm]/output temperature [°C]) with
50 rows.
Info: the sensor curve following EN60751 uses the international temperature
scale ITS90 and following formulas:
Temperatures < 0 °C: R
neg
(T) := 100 ꞏ [1 + 3.9083ꞏ10
-3
ꞏT – 5.775ꞏ10
-7
ꞏT
2
–
4.183ꞏ10
-12
ꞏ(T – 100)ꞏT
3
]
Temperatures >= 0 °C:
R
pos
(T) := 100 ꞏ (1 + 3.9083ꞏ10
-3
ꞏT – 5.775ꞏ10
-7
ꞏT
2
)
Please notice: temperature measurements with the user sensor curve are
allowed only within the temperature range which has been used to generate the
user sensor curve. Temperature measurements with an user sensor curve
beyond the checked temperature range can possibly lead to tremendous errors.
Therefore, the sensor curve due to DIN EN 60751 (display: Lin E.751) has to be
used for temperature measurements beyond the checked temperature range.
