YSI TruLine ORP 51 User Manual
Page 7
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7
T 814246
04/2014
TruLine
Commissioning, measuring, testing
Conversion to the
standard hydrogen
electrode potential
U
H
= U
Meas
+ U
Ref
where:
U
H
= ORP voltage, relative to the
standard hydrogen electrode
U
Meas
= measured ORP voltage
U
Ref
= voltage of the reference system relative to the
standard hydrogen electrode
U
Ref
is temperature dependent and can be taken from the following table
(also refer to DIN 38404-6):
T (°C)
U
Ref
[mV]
TruLine ORP 51
T (°C)
U
Ref
[mV]
TruLine ORP 51
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
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