SensoLyt
®
MPP-A Pt
Calibrating, measuring
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ba75488e02
07/2011
4
Calibrating, measuring
Note
See operating manual of the meter.
Note
Take off the watering cap when you want to calibrate or measure.
Conversion to
standard hydrogen
electrode
U
H
= U
Meas
+ U
Ref
U
Ref
depends on the reference system and temperature and is given in the
following table (see also DIN 38404-6 for the system, Ag/AgCl/
saturated KCl):
with:
U
H
= ORP, referring to the standard hydrogen electrode
U
Meas
= Measured ORP
U
Ref
= Voltage of the reference system compared to the standard
hydrogen electrode
T (°C)
U
Ref
[mV]
T (°C)
U
Ref
[mV]
SensoLyt
®
MPP-A Pt
SensoLyt
®
MPP-A Pt
0
+221
35
+187
5
+216
40
+181
10
+212
45
+176
15
+207
50
+171
20
+202
55 +165
25
+197
60 +160
30
+192
