Configuration; Overview - Honeywell DirectLine DL423 User Manual

Configuration

3.1 Overview

Configuration Parameters
Set Up consists of configuring the following functions:
 Cell Constant Selection – Only used with DL4000 conductivity cells.
4973/4905 style cells have an EEPROM that automatically loads the cell
constant information into the DL423 module. The available selections are:
0.01, 0.1 (default), 1, 10, 25, 50.
 PV Type Selection – The PV type determines the measured, displayed, and
transmitted variable. The cell constant determines the available selection of PV
types according to the table below:
Cell Constant
0.01, 0.1
1, 10
25, 50
 Cell Factor Selection - The Cell Factor is a correction value applied to the
Cell Constant to take into account tolerances in manufacturing. The value for all
DL4000 cells is 1.0. Cell styles 4973/4905 have an EEPROM that automatically
loads the cell factor information into the DL423 module. Values between 0.850
and 1.150 can be configured (1.000 default).
 TDS Factor Selection – The TDS Factor is a conversion value applied to
conductivity to calculate the Total Dissolved Solids in units of concentration
(ppm, ppb, or ppt) per S/cm. This configuration menu is only available when
the PV Type selection is TDS. Values between 0.010 and 1.999 can be
configured (0.500 default).
 Solution Temperature Coefficient – Conductivity and resistivity
measurements can be compensated to 25° C for a specific solution type. The
cell constant determines the available selection of solution types according to
the table below:
Cell Constant
0.01, 0.1
1, 10
25, 50
12
3. Configuration
Conductivity S (default), Resistivity, TDS ppb, TDS ppm
Conductivity mS (default), TDS ppt
Conductivity mS, Concentration (default)
Selectable Solution Types
None (Conductivity/Resistivity only), HCl, NaCl (default)
None (Conductivity only), HCl, NaCl (default)
None (Conductivity only), HCl(default), NaCl, H2SO4, NaOH
DirectLine® DL423 Sensor Module User Manual
Selectable PV Types
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