BEKA BA364E, Руководство пользователя

Страница: 42 / 60

Fig 18 Application of 4/20mA output
10.4.3 Configuration and calibration
When a BA364G Counter is supplied with an
optional 4/20mA output the configuration menu is
extended as shown in Fig 19.
The 4/20mA output
sub-menu is accessed via the
4-20 oP
function.
The 4/20mA output sub-menu allows the 4/20mA
output to be controlled by the rate or the total display.
Fig 19 4/20mA output configuration sub-menu
10.4.4 Access 4/20mA output sub-menu:
4-20 oP
Access the BA364G Counter configuration menu as
described in section 6.2. Using the
&
and
*
push
buttons scroll though the menu until
4-20 oP
is
displayed, pressing
(
will then access the 4/20mA
output sub-menu which is shown in Fig 19.
10.4.5 Enable 4/20mA output:
EnbL
This function allows the 4/20mA output to be
disabled or enabled without altering any of the
4/20mA output parameters. Using the
&
or
*
push button select
EnbL
in the
4-20 oP
sub-menu
and press
(
to reveal the existing setting
on
or
oFF
.
The function can be changed by pressing the
&
or
*
push button followed by the
)
button to return
to
EnbL
prompt.
Note: When the 4/20mA output is disabled by
selecting
oFF
, the output is a constant
3.5mA irrespective of the instrument
display.
10.4.6 Select rate or total source:
4-20tYPE
The 4/20mA output current can represent the
BA364G Counter’s rate or total display and this must
be defined before any other 4/20mA current output
functions are configured.
Using the
&
or
*
push button select
4-20tYPE
in
the 4/20mA output sub-menu and press
(
to reveal
the existing setting
totAL
or
rAtE
. The function can
be changed by pressing the
&
or
*
push button
followed by the
)
button to return to
4-20tYPE
prompt.
Note: If the controlling source of the 4/20mA
output is changed i.e. from rate to total, the
4/20mA output will be disabled and the
output will be a constant 3.5mA irrespective
of the instrument display.
The 4/20mA output must always be re-
enabled and reconfigured following the
controlling source being changed.
10.4.7 Display which corresponds to 4mA
output:
4 . 000
The BA364G Counter display which corresponds to
a 4.000mA output current is defined by this function.
Using the
&
or
*
push button select
4 . 000
in the
4/20mA output sub-menu and press
(
to reveal the
existing rate or total display with one digit flashing.
The required display can be entered using the
&
or
*
push button to adjust the flashing digit and
the
(
button to transfer control to the next digit.
When set as required press
)
to enter the value
and return to the
4 . 000
prompt in the 4/20mA output
sub-menu.
42