Xylem YSI TruLine ORP 51 Mode D'emploi page 7

TruLine
Conversion to the
standard hydrogen
electrode potential
T 814246 04/2014
U = U + U
H Meas Ref
where: U = ORP voltage, relative to the
H
U = measured ORP voltage
Meas
U = voltage of the reference system relative to the
Ref
U is temperature dependent and can be taken from the following table
Ref
(also refer to DIN 38404-6):
T (°C)
U
Ref
TruLine ORP 51
0 +221
5 +216
10 +212
15 +207
20 +202
25 +197
30 +192
standard hydrogen electrode
standard hydrogen electrode
T (°C)
[mV]
35
40
45
50
55
60
Commissioning, measuring, testing
U [mV]
Ref
TruLine ORP 51
+187
+181
+176
+171
+165
+160
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