Watts HF scientific CLX- XT, Руководство пользователя

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CLX-XT (28652) Page 19
REV 5 (5/2020)
7.0 Instrument Configuration (CONFIG mode)
The instrument has been designed to provide the ability to customize the instrument
according to needs at any time during normal operation. This mode has been split into
sub-menus to facilitate instrument configuration. This section describes how to use each
of the sub-menus to configure the instrument. While in the configuration mode, the
instrument has a time-out feature that automatically returns the system operation to the
AUTO mode after a fifteen (15) minute period of no button pushes.
Enter the CONFIG mode of the instrument by pressing the MODE/EXIT button until the
arrow beside CONFIG is illuminated, then press the
↵
button to scroll through the sub-
menus.
To exit the CONFIG mode, press the MODE/EXIT button any changes that were
made will be saved.
7.1 Setting the 4-20 mA Output
The first configuration selection is 4-20 for the 4-20 mA
output. Select the either On or OFF using the

and

buttons. Once the desired output has been set, press the

button to accept it. The next prompts will depend on
the output selected. Also see sections 7.13 & 7.14.
If the 4-20 mA output was turned On , prompts to set the
4mA (4MA) and 20mA (20MA) chlorine limits will be
displayed. There will also be a menu to adjust the error
level (ERLV). The first prompt will be the chlorine limit
assigned to the 4 mA output level:
Select the chlorine level to assign to the 4MA using the

and

buttons.
Once the desired level has been set, press the

button to accept it.
The 4MA can be set higher than 20MA level to invert the output current if required.
This may be required to control a dosing pump.
The next prompt will be the chlorine level assigned to the
20MA. Select the chlorine level using the

and

buttons. Once the desired level has been set, press the

button to accept it.
7.2 Configuring the Error Level
In case of an error in the CLX-XT, the 4-20 mA reading
can be used to indicate a problem by sending the current
to either 4.00 mA, 2.00 mA or 0 mA. The factory
default setting is OFF. Select the desired ERLV by using
the

and

buttons then press the

button to accept
the desired error response.