Input basic programming data
47
Monitoring the measurement point
Connecting a recorder allows the analytical results to be document-
ed. For this purpose the device includes a programmable current
output (optionally 0-20 mA or 4-20 mA).
The following example indicates the course of the current within the
range of 0-20 mA.
Select in the menu
=>basic program => current interface type
Select the desired current range.
Confirm the selection with "OK"
Calculation of output currents
Depending on the selected function, the current range available is
either 0 – 20 mA or 4 – 20 mA. The resulting currents for the various
measurement values are shown in the form of the following formulas.
Measurement value
Current = x 20 mA
Measurement range upper limit
measurement value
current = x 16 mA + 4 mA
Measurement range upper limit
The current is set to 0 or 4 mA.
The current is set to 20 mA.
Measurement value = display value in the selected hardness unit
Maximum value = final value of the indicator used
(e.g. indicator type 2005 = 0.5 °dH)
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