wtw pHotoFlex STD, Operating Manual

Page: 37 / 82

pHotoFlex
®
STD Operation
37 ba75958d05 10/2017
Display indication when
the measuring range is
undercut or exceeded
Examples:
The orientation value can be quite inaccurate and should not be used
as a measure value!
Display Explanation
"< [Lower limit of measuring range]"
instead of the measured value Measuring range undercut.
Remedy: Use a test with a lower
measuring range
"> [Upper limit of measuring range]"
instead of the measured value Measuring range exceeded.
Remedy: Use a test with a high-
er measuring range or dilute the
sample
Orientation value This value serves as a refer-
ence point for the selection of a
suitable test or dilution ratio.
If the measurement signal can-
not be evaluated (intensity too
high or too low), four bars ap-
pear ("----").
Photometry \ Concentration
0.16
[ BV ]
< 0.20
mg/l
83: A6/25 MC NH4-N
16 mm 0.20 - 6.51 mg/l
01.02.05 15:12
Orientation value
Photometry \ Concentration
----
[ BV ]
< 0.20
mg/l
83: A6/25 MC NH4-N
16 mm 0.20 - 6.51 mg/l
01.02.05 15:12
Measurement signal cannot
be evaluated