User Guide

Operating Instructions αlpha-RES1000
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7.5.7 Selecting Resistivity value at 20mA
This parameter selects the resistivity value at which transmitter output will be 20mA.
4) Follow directions in 7.5.4 to enter Current Output mode.
5) Press the ENTER key until upper display shows a resistivity value and lower display shows “r.20”.
6) Press the ∆ or ∇ keys to select the required resistivity value to be equivalent to 20 mA (Default is
20.00 mΩ).Note that difference between the value at 4mA and 20mA must be at least 20% of F.S.
7) Press the ENTER key to confirm your selection.
8) Press the ENTER key to return to Advanced Set-up mode, or return to Measurement mode by
pressing the ∆ and ∇ keys simultaneously (escape).
7.6 Configuration (ConF) sub-function
This group of parameters lets you configure the controller to suit your requirements.
7.6.1 Entering Configuration sub-function
1) Enter Advanced Set-up mode. Push ENTER key and scroll to Advanced Set-up security code
“22”. Push ENTER key.
2) Press ∆ or ∇ keys to scroll until upper display shows “ConF”. Press ENTER key to enter
configuration sub-function.
7.6.2 Selecting Filter Function and the Alarm or Wash Function
In this configuration sub-function, you have the ‘Filter’ selection which lets
you filter rapid measurement changes and stabilising the measurement.
This configuration sub-function also allows you to use the Alarm relay as
Wash or Clean contact. The Wash (Clean) contact is used in combination
with automatic cleaning systems. During the wash cycle, the analog output
is set on hold.
1) In Filter selection mode, use the arrow keys to choose filter "on" or "off".
2) Press the ENTER key to confirm. Display will now show “ALr” or “CLn”.
3) Press the ∆ or ∇ keys to choose "ALr" (Alarm) or "CLn" (Clean) function.
4) Press the ENTER key to confirm your selection.
5) Proceed to 7.6.3, or return to Measurement mode by pressing the ∆ and
∇ keys simultaneously (escape).
Note: The factory default setting for the Filter selection is "on".