27
For automatic cal temp detection, the Protos
measures the temperature of the buffer solution
with a temperature probe (Pt 100/ Pt 1000/
NTC 30 kΩ/NTC 8.55 kΩ). If you work with
automatic temperature compensation during
calibration, a temperature probe connected to
the temperature input of the Protos must be in
the buffer solution! Otherwise, you must select
manual entry of calibration temperature. When ”Cal temp automatic” is set,
”Measured cal temp” appears in the menu.
Temperature compensation during calibration
Calibration / Adjustment
Temperature compensation
Calimatic
Return
Cal medium: Buffer solution
Knick 2.00 4.01 7.00 9.21
When changing sensors perform
First cal for statistics!
Measured cal temp
25.6 °C
7.00 pH
+025.6 °C
Proceed
Sensor replacement
Automatic temperature compensation
There are two important reasons for determining the temperature of the buffer
solution:
The slope of the pH electrode is temperature-dependent. Therefore the
measured voltage must be corrected by the temperature influence.
The pH value of the buffer solution is temperature-dependent. For calibration,
the buffer solution temperature must therefore be known in order to choose
the actual pH value from the buffer table.
During parameter setting you define whether cal temperature is measured
automatically or must be entered manually:
Manual temperature compensation
The temperature of the buffer solution must be
entered manually in the Parameter setting menu
at "Parameter setting / <PH module> / Sensor
data / Temp detection / Cal temp --> manual".
Temperature measurement is performed using a
glass thermometer, for example.
Temp detection (Administrator)
Temp probe
Measuring temp
Cal temp
25.6 °C
7.00 pH
+025.6 °C
Manual
Manual
Auto
Pt 1000
Manual
Auto
N
ot
e:
T
he displa
y ma
y v
ar
y depending on the devic
e v
ersion.
Содержание Protos II 4400
Страница 18: ...18 ...
Страница 23: ...23 Wiring Examples Connection of ISM sensor Transparent Black PH 3400 X 035 ...
Страница 73: ...73 ...
Страница 88: ...88 Appendix Buffer table Mettler Toledo ...
Страница 90: ...90 Appendix Buffer table DIN 19267 ...
Страница 92: ...92 Appendix Buffer table Techn buffers to NIST ...
Страница 93: ...93 Appendix Buffer table Hamilton ...
Страница 94: ...94 Appendix Buffer table Kraft ...
Страница 95: ...95 Appendix Buffer table Hamilton A ...
Страница 96: ...96 Appendix Buffer table Hamilton B ...
Страница 97: ...97 Appendix Buffer table HACH ...
Страница 100: ...100 ...
Страница 111: ...111 Index Protos PH 3400 X 035 Module ...