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ABB TB82PH Instructions d'exploitation Page 16

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Vue de la page 15
I-E67-TB82FF-2A February 13, 2002
16
0
5
10
15
20
25
30
35
40
45
50
0 50 100 150 200 250 300 350 400
Conductivity (mS/cm)
Ammonium Nitrate (%)
Break Points
Actual Conductivity-to-Concentration Curve
Figure 21 – Conductivity-to-Concentration Break Point Determination
Temperature Sensor State
The Temperature Sensor State configures the
transmitter for use with a Pt100, 3 kohm Balco, 4.75
kohm Network or no RTD (NONE).
TMPSNS
TMPSNS
RETURN
mS/cm
12.3
3K.BLCO
MEASURE
MEASURE
CALIBRATE
OUT/HOLD
CONFIGURE
SECURITY
DISPLAY
NEXT
mS/cm
12.3
PT 100
MEASURE
MEASURE
CALIBRATE
OUT/HOLD
CONFIGURE
SECURITY
DISPLAY
NEXT
ENTER
ENTER
Last
Selected
CONFIG
EXIT
mS/cm
12.3
4.7K.RTD
MEASURE
MEASURE
CALIBRATE
OUT/HOLD
CONFIGURE
SECURITY
DISPLAY
NEXT
mS/cm
12.3
NONE
MEASURE
MEASURE
CALIBRATE
OUT/HOLD
CONFIGURE
SECURITY
DISPLAY
NEXT
ENTER
ENTER
Figure 22 – Screen Flow Diagram for Temperature
Sensor State of Operation
Temperature Compensation State
Temperature has a marked effect on the conductance
of solutions. The effect is generally non-linear and
dependent on the particular ionic species and their
concentration.
The TB82EC FF Transmitter contains a number of
preprogrammed correction algorithms that
compensate the effect of temperature on conductivity
to a reference temperature of 25°C. Thus, the
displayed and transmitter process value will be
accurate and stable when the process temperature
varies.
mS/cm
68.2
AUTO
MEASURE
MEASURE
CALIBRATE
OUT/HOLD
CONFIGURE
SECURITY
DISPLAY
NEXT
mS/cm
68.2
MANUAL
MEASURE
MEASURE
CALIBRATE
OUT/HOLD
CONFIGURE
SECURITY
DISPLAY
NEXT
ENTER
ENTER
Last
Selected
TC.TY PE
TC.TY PE
RETURN
AUTO
CONFIG
EXIT
Figure 23 – Screen Flow Diagram for Temperature
Compensation State of Operation.
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