Measurement; Configuration - Valmet SMART-PULP Operating And Installation Instructions

SMART-PULP

2.1 MEASUREMENT

Shear force measurement will immediately be on
when you first power up the transmitter. The output
for uncalibrated measurement is shown in per
cents of maximum span (30N). The consistency
percentage display can be activated after
configuration and recipe selection.
Calibrations are saved permanently in the
transmitter's memory.
XX.XX%CS
XX.XXMA
XX.XX%
XXXX
S XX.X
P XX.X
H XX.X
RECIPE X
ASH XX.X%

2.2 CONFIGURATION

In configuration you define and programme the
application's invariable basic parameters.
Configuration is usually done only once, before
installing the transmitter. When defining the upper
and lower range limits you have to take into account
the measurable minimum consistencies and
recommended maximum consistencies specified for
each sensor/pulp type (see Fig. 7.1b).
However, in configuration it is possible to specify
e.g. 0% Cs as the lower range-value regardless of
Smart Consistency Transmitter
Pulp's consistency percentage (see note above).
mA output signal.
Display in per cents (%) of span.
Shear force
G = grammes, N = Newtons
(NOTE! The displayed shear force is already
process temperature corrected shear force.)
Force sensor's temperature, C = °C and F = °F
Pulp temperature, C = °C and F = F°
Electronics temperature, C = °C and F = °F
Recipe selection. NOTE! When performing
calibration, the recipe to be calibrated must be
active (currently selected). If you want to use remote
selection with binary signals (see Electrical
Connections), you have to select 0 as recipe
number from the operator keys. Blinking display
indicates that calibration has not been done for the
recipe in question. The text NOT CALIB displayed
after selection of recipe number indicates the same
thing. Factory default calibration: P1 = 1.00 and P2
= 0.00)
The ash (filler) content entered in calibration. This
can be changed directly from the NEW RECI menu,
or from the LABORATO menu in calibration mode.
(Recommended when entering laboratory results of
samples).
SMART-PULP does not measure ash, i.e. fillers.
However, the transmitter is usually calibrated to
indicate total consistency. This is done by making
the required sensitivity and/or zero offset correction
in the calibration curve.
Four (4) optional consistency measurement displays
or three (3) optional temperature measurement
displays are available. These can be selected with
arrow keys:
warnings, provided that the consistency will not in
actual fact drop below the specified measurable
minimum. In the same way, it is possible to exceed
the specified upper range-value in configuration.
However, the measurement may be affected by flow
velocity if the actual consistency in the process goes
above the recommended maximum limit.
You should also take into account that the
transmitter's minimum span is 0.8% Cs and its
maximum span corresponds to 30 N shear force,
depending on the selected sensor/pulp type.
21
BCs160VA
Nov. 15, 1997