BEKA BA507E Installation and operating instructions

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Installation & Maintenance Instructions
BA507E, BA508E,
BA527E, BA528E

Installation & Maintenance Instructions
BA507E, BA527E,
BA508E & BA528E
General purpose loop-powered
panel mounting indicators
Reading Office
Cutbush Park, Danehill, Lower Earley,
Reading, Berkshire. RG6 4UT. UK.
Tel: [phone]
Email: [email protected]
Aberdeen Office
Unit 6 Airside Business Park, Kirkhill Industrial Estate,
Dyce, Aberdeen. AB21 0GT. UK.
Tel: [phone]
Email: [email protected]
Internet: www.able.co.uk
e-procurement: www.247able.com
Registered in England No: 01851002
VAT No: GB 417 2481 61

Issue: 3
1st December 2012
BA507E, BA527E,
BA508E & BA528E
General Purpose
loop-powered
panel mounting indicators
issue 3

2
1. Description
2. Operation
2.1 Controls
3. Applications
3.1 Transmitter loops
3.2 Remote indication
4. Installation
4.1 Location
4.2 Installation procedure
4.3 Scale card
4.4 EMC
5. Configuration and Calibration
5.1 Summary of configuration
functions.
5.2 Indicator function
5.3 Resolution
5.4 Position of decimal point
5.5 Calibration using an external
current source.
5.6 Calibration using internal
reference.
5.7 Bargraph format and calibration
5.8 Function of the Ppush-button
5.9 Tare function
5.10 Security code
5.11 Reset to factory defaults
5.12 Under and over-range
6. Lineariser
6.1 Lineariser calibration using an external
current source.
6.2 Lineariser calibration using internal
reference.
6.3 Lineariser error message
6.4 Lineariser under and over-range
6.5 Lineariser default configuration
7. Maintenance
7.1 Fault finding during commissioning
7.2 Fault finding after commissioning
7.3 Servicing
7.4 Routine maintenance
7.5 Guarantee
7.6 Customer comments
8. Accessories
8.1 Scale card
8.2 Tag strip
8.3 Alarms
8.3.1 Solid state output
8.3.2 Configuration and adjustment.
8.3.3 Alarm enable
8.3.4 Setpoint adjustment
8.3.5 Alarm function
8.3.6 Alarm output status
8.3.7 Hysteresis
8.3.8 Alarm delay
8.3.9 Alarm silence time
8.3.10 Flash display when alarm
occurs.
8.3.11 Access setpoint in display
mode.
8.3.12 Adjusting alarm setpoint from
the display mode.
3.3.13 Displaying setpoints on
3.3.14 bargraph.
8.4 Display backlight
8.4.1 Loop powering the backlight
8.4.2 Separately powering the
backlight.
The BA507E, BA527E, BA508E & BA528E are CE marked to show compliance with the
European EMC Directive 2004/108/EC
CONTENTS

3
1. DESCRIPTION
These panel mounting, general purpose digital
indicators display the current flowing in a 4/20mA
loop in engineering units. They are loop powered
but only introduce a 1.2V drop, which allows them
to be installed into almost any 4/20mA current
loop. No additional power supply or battery is
required.
The four models are electrically similar, but have
different size displays and enclosures.
Model Display Bezel size
BA507E 4 digits 15mm high 96 x 48mm
BA527E 5 digits 11mm high 96 x 48mm
and bargraph.
BA508E 4 digits 34mm high 144 x 72mm
BA528E 5 digits 29mm high 144 x 72mm
and bargraph.
This instruction manual supplements the
instruction sheet supplied with each instrument.
The main application of all the models is to display
a measured variable or control signal in a process
area. The zero and span of the display are
independently adjustable so that the indicator can
be calibrated to display any variable represented
by the 4/20mA current, e.g. temperature, flow,
pressure or level.
The BA507E, BA527E, BA508E and the BA528E
are not certified for use in explosive atmospheres.
For hazardous area applications the BA307E,
BA327E, BA308E or the BA328E should be used.
2. OPERATION
Fig 1 shows a simplified block diagram of all the
models. The 4/20mA input current flows through
resistor R1 and forward biased diode D1. The
voltage developed across D1, which is relatively
constant, is multiplied by a switch mode power
supply and used to power the instrument. The
voltage developed across R1, which is proportional
to the 4/20mA input current, provides the input
signal for the analogue to digital converter.
Each time a 4/20mA current is applied to the
instrument, initialisation is performed during which
all segments of the display are activated, after five
seconds the instrument displays the input current
using the calibration information stored in the
instrument memory. If the loop current is too low
to power the instrument the indicator will display
the error message ‘LPLo’.
Fig 1 Indicator block diagram

4
2.1 Controls
The indicators are controlled and calibrated via
four front panel push-buttons located below the
display. In the display mode i.e. when the
indicator is displaying a process variable, these
push-buttons have the following functions:
PWhile this button is pushed the
indicator will display the input current in
mA, or as a percentage of the
instrument span depending upon how
the indicator has been conditioned.
When the button is released the normal
display in engineering units will return.
The function of this push-button is
modified when optional alarms are
fitted to the indicator.
▼While this button is pushed the
indicator will display the numerical
value and analogue bargraph* the
indicator has been calibrated to display
with a 4mAΦinput. When released the
normal display in engineering units will
return.
▲While this button is pushed the
indicator will display the numerical
value and analogue bargraph* the
indicator has been calibrated to display
with a 20mAΦinput. When released
the normal display in engineering units
will return.
ENo function in the display mode unless
the tare function is being used.
P + ▼Firmware number followed by version.
P + ▲Direct access to the alarm setpoints
when optional alarms are fitted to the
indicator and the ‘ACSP’ access
setpoints in display mode function has
been enabled.
P + E Access to configuration menu via
optional security code.
Note: * BA527E and BA528E only
ΦIf the indicator has been calibrated
using the CAL function, calibration
points may not be 4 and 20mA.
3. APPLICATIONS
3.1 Transmitter loops
All the models may be connected in series with
any 4/20mA current loop and calibrated to display
the measured variable or control signal in
engineering units.
Figs 2 illustrate a typical application in which an
indicator is connected in series with a 2-wire
transmitter.
Fig 2 Indicator in a transmitter loop
Considering the example shown in Fig 2, the sum
of the maximum voltage drops of all the
components in the loop must be less than the
minimum power supply voltage.
Minimum operating voltage of 2-wire Tx 10.0
Maximum voltage drop caused by controller 5.0
Maximum voltage drop caused by BA507E 1.3
Maximum voltage caused by cables 0.4
_____
16.7V
Therefore at 20mA in this example the power
supply must have a minimum output of 16.7V
3.2 Remote indication
All the indicators may be driven from a 4/20mA
signal to provide a remote indication. Fig 3 shows
a typical application in which the 4/20mA output
from a gas analyser is connected to a BA507E
loop powered indicator to provide a remote
indication of the analyser’s output. Again it is
necessary to ensure that the voltage capability of
the 4/20mA source is greater than the sum of the
voltage drops introduced by the indicator and the
cable resistance.

5
Fig 3 Indicator providing a remote display
4. INSTALLATION
4.1 Location
All the models have a robust glass reinforced
modified PPO enclosure with a toughened glass
window. The front of the indicator has IP66
protection and a gasket seals the joint between the
instrument enclosure and the panel. The rear of
the indicator has IP20 protection.
The indicators may be installed in any panel
providing that the operating temperature is
between –40ºC and +70ºC.
Figs 4A and 4B show the overall dimensions of the
96 x 48mm and the 144 x 72mm instruments
together with the recommended panel cut-out
dimensions. To achieve an IP66 seal between the
instrument enclosure and the instrument panel the
smaller tolerance aperture must be used, and the
144 x 72mm models must be secured with four
panel mounting clamps.
Although the indicator front panel provides IP66
protection it should be shielded from direct sunlight
and severe weather conditions.
Fig 4A BA507E and BA527E dimensions

6
Fig 4B BA508E and BA528E dimensions
4.2 Installation Procedure
a. Cut the specified aperture in the panel. To
achieve an IP66 seal between the instrument
enclosure and the instrument panel the
aperture must have the tighter tolerances
specified in Fig 4A and 4B.
b. Slide the gasket over the body of the
indicator before inserting the instrument into
the panel aperture.
c. Firstly ensure that all the panel mounting
clamps are closed by turning the knurled
screws fully anti clockwise until the two pips
in the clamp foot align with holes in the clamp
body.
d. Place a clamp in the recess on each side of
the indicator, pulling gently to slide it onto the
dovetail as shown in Fig 5. Push the knurled
screw slightly forward to engage the thread
and tighten by turning clockwise until it is just
finger tight. When both clamps are fitted
ensure that the gasket behind the front panel
bezel is correctly positioned before fully
tightening the clamps to secure the
instrument. The maximum recommended
clamp tightening torque is 22cNm (1.95 lbf in)
which is approximately equvalent to finger-
tight plus one half turn. Do not over tighten.
e. Four panel mounting clamps are required to
achieve an IP66 seal between a BA508E and
BA528E indicator and the instrument panel.
f. Connect the panel wiring to the rear terminal
block(s) as shown in Figs 4A and 4B. To
simplify installation, the terminals are
removable so that the panel wiring can be
completed before the instrument is installed.
Fig 5 Fitting panel mounting clamps

7
4.3 Scale card
The indicator’s units of measurement are shown
on a printed scale card in a window at the right
hand side of the display. The scale card is
mounted on a flexible strip that is inserted into a
slot at the rear of the instrument as shown in Fig 6.
Thus the scale card can easily be changed without
removing the indicator from the panel or opening
the instrument enclosure.
New indicators are supplied with a printed scale
card showing the requested units of measurement,
if this information is not supplied when the indicator
is ordered a blank card will be fitted.
A pack of self-adhesive scale cards printed with
common units of measurement is available as an
accessory from BEKA associates. Custom printed
scale cards can also be supplied.
To change a scale card, unclip the protruding end
of the flexible strip by gently pushing it upwards
and pulling it out of the enclosure. Peel the
existing scale card from the flexible strip and
replace it with a new printed card, which should be
aligned as shown below. Do not fit a new scale
card on top of an existing card.
Install the new scale card by gently pushing the
flexible strip into the slot at the rear of the indicator,
when it reaches the internal end-stop secure it by
pushing the end of the flexible strip downwards so
that the tapered section is held by the rear panel.
Align the self-
adhesive printed
scale card onto
the flexible strip
and insert the strip
into the indicator
as shown below.
Fig 6 Inserting flexible strip carrying scale card
into slot at the rear of indicator.
4.4 EMC
The indicators comply with the requirements of the
European EMC Directive 2004/108/EC. For
specified immunity all wiring should be in screened
twisted pairs, with the screens earthed at one
point.

8
5. CONFIGURATION AND CALIBRATION
Indicators are configured and calibrated via the
four front panel push-buttons. All the
configuration functions are contained in an easy to
use intuitive menu that is shown diagrammatically
in Fig 7.
Each menu function is summarised in section 5.1
and includes a reference to more detailed
information. When the indicator is fitted with alarms
additional functions are added to the menu which
are described in section 8.3
Throughout this manual push-buttons are shown
as P, E,▼or ▲, and legends displayed by the
indicator are shown within inverted commas e.g.
'CAL' and ' ALr2'.
Access to the configuration menu is obtained by
operating the Pand Epush-buttons
simultaneously. If the indicator security code is set
to the default 0000 the first parameter 'FunC' will
be displayed. If a security code other than the
default code 0000 has already been entered, the
indicator will display 'CodE'. Pressing the Pbutton
will clear this prompt allowing each digit of the
code to be entered using the ▲and ▼push-
buttons and the Pbutton to move control to the
next digit. When the correct four digit code has
been entered pressing Ewill cause the first
parameter 'FunC' to be displayed. If the code is
incorrect, or a button is not pressed within twenty
seconds, the indicator will automatically return to
the display mode.
Once within the configuration menu the required
parameter can be reached by scrolling through the
menu using the ▲and ▼push-buttons as shown
in Fig 6. When returning to the display mode
following recalibration or a change to any function,
the indicator will display ‘dAtA’ followed by ‘SAVE’
while the new information is stored in non-volatile
memory.
All new indicators are supplied calibrated as
requested at the time of ordering. If calibration is
not requested, indicators will be configured as
follows:
BA507E BA527E
BA508E BA528E
Access code ‘CodE’ 0000 0000
Function ‘FunC’ Std Std
Display at 4mA ‘Zero’ 0.0 0.00
Display at 20mA ‘SPAn’ 100.0 100.00
Resolution ‘rESn’ 1 digit 1 digit
Bargraph start ‘BarLo’ ----- 0.00
Bargraph finish ‘BarHi’ ----- 100.00
Pbutton in display mode ‘C—P’ % %
Tare ‘tArE’ Off Off
Default configuration can easily be changed on-
site.
5.1 Summary of configuration functions
This section summarises each of the main
configuration functions and includes a cross
reference to a more detailed description. Fig 7
illustrates the location of each function within the
configuration menu. The lineariser and the
optional factory fitted alarms are described
separately in sections 6 and 8.3 of this manual.
Display Summary of function
'FunC' Indicator function
Defines the relationship between the
4/20mA input current and the indicator
display. May be set to:
‘Std’ Standard linear relationship
‘root’ Square root extraction
‘Lin’ 16 segment adjustable
lineariser – see section 6.
See section 5.2
'rESn' Display resolution
Defines the resolution of the least
significant display digit. May be set to
‘1’, ‘2’, ‘5’ or ‘10’ digits.
See section 5.3
'dP' Decimal point
Positions a dummy decimal point
between any of the digits or turns it off.
See section 5.4
'CAL' Calibration of the digital display
using an external current source.
Enables the zero and span of the
indicator to be adjusted using an
external current source such as a
calibrator. When used with an accurate
traceable current source this is the
preferred method of calibration.
See section 5.5
'SEt' Calibration of display using internal
references.
Enables the zero and span of the
indicator to be adjusted without the
need for an accurate input current or
disconnection from the 4/20mA loop.
See section 5.6
'bAr' Bargraph format and calibration
Only BA527E & BA528E have bargraph
The bargraph may be conditioned to
start from left, right or centre of the
display, or it may be disabled. When
optional alarms are fitted it can also
display both alarm setpoints and the
measured value.
The bargraph may be calibrated to start
and finish at any value within the
indicator’s calibrated digital display.
See section 5.7

9
P
Display
mode
EE P E E P E P E
Security Code
Enter code by
pressing
and
to move to next
digit. Code 0000
allows direct
access to
the menu
P
Function
or
to select
Standard
function
Root extractor
Lineariser
E
P E
E
Resolution
or
to select
resolution
of least
significant
digit
Decimal point
or
to select
position of
dummy
decimal
point
P E P E P E
P E
When fitted alarm
functions appear here
Only in BA327E &
BA328E menu
E
Calibration using
external current source
(Preferred method)
With accurate 4mA input current
set required zero display by
pressing and
to move to the next digit
Similarly, using accurate 20mA
input current set required
full scale display
Any current between 4 and
20mA may be used providing
difference is > 4mA
EP E
P
P E P E P E
E
Calibration using
internal references
(Input current may be any value)
Using ZEro function set required
display at 4mA by pressing
pressing and
to move to the next digit
Similarly, using SPAn function set
required display at 20mA
E
P
P E P E P E
E
Select type of bargraph display and define
start and finish relative to digital display
Using the tYPE function select required bargraph
justification by pressing
Using the bArLo function set the digital display
at which the bargraph is required to start by
pressing and to move to the
next digit. Similarly using the bArHi function set
digital dispay ar which the bargraph is required
to finish
E
P E
E
P
P E P E
P E
EEEE
Define
Security Code
Enter by
pressing
&
to move to
next digit
Reset indicator
configuration
Press
to select ConF
to reset
indicator or
LtAb to
reset lineariser
to default
configuration.
Confirm selection
by entering SurE
by pressing
&
to move to
next digit
Function of P
button in
display mode
Press
to toggle
between
4-20mA and
% of span
Tare Function
Press
to turn tArE
on or oFF P
P
Fig 7 Configuration menu

10
Display Summary of function
'C - - P' Function of P push-button
The indicator may be configured to
display the input current in milliamps, or
the input current as a percentage of the
4/20mA input when the Ppush-button
is operated in the display mode.
See section 5.8
'tArE' Tare function
When enabled the tare function sets
the indicator display to zero when the E
push-button is operated in the display
mode.
See section 5.9
'CodE' Security code
Defines a four digit numeric code that
must be entered to gain access to the
configuration menu. Default code 0000
disables this security function and
allows unrestricted access to all
conditioning functions.
See section 5.10
'rSEt' Reset
Contains two sub-functions, ‘ConF’
which returns the indicator to the
default conditions and ‘LtAb’ which
returns the lineariser to the default
conditions. To prevent accidental use
both resets must be confirmed by
entering ‘5urE’ before they will be
executed.
See section 5.11
5.2 Indicator function: ‘FunC’
This configuration function defines the relationship
between the indicator’s 4/20mA input current and
the indicator’s display. Three alternatives are
available:
‘Std’ Standard linear relationship
‘root’ Square root extraction
‘Lin’ 16 segment adjustable
lineariser.
To reveal the existing indicator function select
'FunC' from the configuration menu and press P.
If the function is set as required, press Eto return
to the menu, or press the ▲or ▼button to change
the setting, followed by the Ebutton to return to the
configuration menu.
‘Std’ Linear
Provides a linear relationship between the
4/20mA indicator input current and the
indicator display.
‘root’ Square root extraction
Primarily intended to linearise the square
law 4/20mA output from differential
flowmeters.
For reference, the following table shows
the output current from a non-linearised
differential flowmeter.
% of full flow Current output mA
2.5 4.01
10.0 4.16
25.0 5.00
50.0 8.00
75.0 13.00
100.0 20.00
When the root function is selected the
indicator will display flow in linear units.
‘Lin’ 16 segment adjustable lineariser
Enables non linear variables to be
displayed by the indicator in linear
engineering units. Use of the lineariser is
described in section 6 of this instruction
manual.
5.3 Resolution: rESn
This function defines the resolution of the least
significant display digit. Decreasing the display
resolution can improve the readability of a noisy
signal. Select ''rESn' from the menu and press P
which will reveal the current display resolution. To
change the resolution press the ▲or ▼button to
select 1, 2, 5 or 10 digits, followed by the Ebutton
to enter the selection and return to the
configuration menu.

11
5.4 Position of the decimal point: ‘dP’
A dummy decimal point can be positioned between
any of the digits or it may be absent. To position
the decimal point select 'dP' from the menu and
press P. The decimal point can be moved by
pressing the ▲or ▼push-button. If a decimal
point is not required it should be positioned beyond
the most or least significant digit. When
positioned as required press the Ebutton to enter
the selection and return to the configuration menu.
5.5 Calibration using an external
current source: ‘CAL’
This function enables the zero and span of the
indicator to be adjusted using an external
calibrated current source. When used with an
accurate traceable current source this is the
preferred method of calibration.
Zero is the indicator display with 4mA input
Span is the indicator display with 20mA input
To calibrate the indicator select 'CAL' from the
configuration menu and press P.The indicator will
display 'ZEro' which is a request for a 4mA input
current. Adjust the external current calibrator to
4.000mA and again press Pwhich will reveal the
current zero display. The flashing digit of the
indicator display can be changed by pressing the
▲or ▼buttons, when set as required pressing P
will transfer control to the next digit. When all the
digits have been adjusted, press Eto enter the
new zero and return to the 'ZEro' prompt .
Pressing the ▲button will cause the indicator to
display 'SPAn' which is a request for a 20mA input
current. Adjust the external current calibrator to
20.000mA and again press Pwhich will reveal the
existing span display. The flashing digit of the
indicator display can be changed by pressing the
▲or ▼buttons, when set s required pressing P
will transfer control to the next digit. When all the
digits have been adjusted press Eto enter the new
span and return to the 'SPAn' prompt. Finally
press Eagain to return to the configuration menu.
Notes:
a. The indicator input current must be adjusted to
the required value before the zero and span
functions are entered by pressing the P button.
b. Indicators may be calibrated at currents other
than 4 and 20mA, withiin the range 3.8 to
21.0mA providing the difference between the
two currents is greater than 4mA. If these
conditions are not complied with, the indicator
displays ‘FaiL’ and aborts the calibration.
c. If the zero current is greater than the span
current the instrument will be reverse acting i.e.
an increasing input current will cause the
display to decrease.
5.6 Calibration using internal reference: ‘SEt’
Using the ‘SEt’ function the indicator can be
calibrated without the need for an accurate
external current source and without the need to
disconnect the indicator from the 4/20mA
measuring loop.
The indicator’s internal reference is used to
simulate a 4mA and 20mA input current, so the
actual indicator input input current does not have
to be known during calibration.
Zero is the display with a simulated 4mA input
Span is the idisplay with a simulated 20mA input
To calibrate the indicator display select 'SEt' from
the configuration menu and press P. The indicator
will display 'ZEro', pressing Pagain will reveal the
current display at 4mA. The flashing digit can be
adjusted by pressing the ▲or ▼buttons, when
the flashing digit is correct pressing Pwill transfer
control to the next digit. When all the digits have
been adjusted, press Eto return to the 'ZEro'
prompt.
To adjust the display at 20mA, press the ▲button
which will cause the indicator to display 'SPAn',
pressing Pwill then reveal the indicator’s exisitng
display at 20mA. The flashing digit can be
adjusted by pressing the ▲or ▼buttons, when
the flashing digit is correct pressing Pwill transfer
control to the next digit. When all the digits have
been adjusted press Eto return to the 'SPAn'
prompt followed by Eto return to the ‘SEt’ prompt
in the configuration menu.
5.7 Bargraph format and calibration: ‘bAr’
Only BA527E & BA528E have a bargraph
In addition to a five digit numerical display the
BA527E and BA528E indicators have a 31
segment analogue bargraph which may be
configured to start and finish anywhere within the
indicators numerical display range.
To configure the bargraph select 'bAr' from the
configuration menu and press P. The indicator will
display 'tYPE', pressing Pagain will reveal the
existing bargraph justification which can be
changed to one of the following four or five options
using the ▲or ▼button:
Bargraph starts from
‘LEFt’ Left end of display
‘CEntr’ Centre of display
‘riGHT’ Right end of display
‘AlrSP’ Only with alarms – see section 8.3.14
‘oFF’ Bargraph disabled
When set as required press Eto return to the
‘tYPE’ sub-function prompt.

12
The indicator’s digital display at which the
bargraph starts is defined by the ‘bArLo’ sub-
function which is selected by pressing the ▲
button followed by the Pbutton which will reveal
the current indicator display at which the bargraph
starts. The flashing digit can be adjusted by
pressing the ▲or ▼buttons, when set as required
pressing Pwill transfer control to the next digit.
When all the digits have been adjusted, press Eto
return to the 'bArLo' prompt from which ‘bArHi’
which defines the finishing point of the bargraph
can be selected by pressing the ▲button. ‘bArHi’
is adjusted in the same way as ‘bArLo’. When set
as required, pressing Etwice will return the display
to the ‘bAr’ prompt in the configuration menu.
Note: ‘bArLo’ must be set lower than ‘bArHi’,
incorrect setting is indicated by the bargraph scale
flashing with a single bargraph segment activated.
5.8 Function of the Ppush-button: ‘C - - P’
When the indicator is in the display mode,
operating the Ppush-button will display the input
current in milliamps, or the displayed value as a
percentage of the difference between the
displayed values at 4mA and 20mA inputs.
To check or change the function of the Ppush-
button select 'C - -P' from the configuration menu
and press Pto reveal the current setting. Pressing
the ▲or ▼button will toggle the setting between
'4-20' the current display in milliamps and 'PC' the
percentage display. When set as required press
Eto return to the ‘C - - P’ prompt in the
configuration menu.
5.9 Tare function: ‘tArE’
The tare function is primarily intended for use with
weighing system. When the indicator is in the
display mode and the tare function is activated,
pressing the Ebutton for more than three seconds
will zero the indicator’s digital display and activate
the tare annunciator. On models with a bargraph,
the bargraph remains linked to the digital display
when the tare function is activated. Subsequent
operation of the Epush-button for less than 3
seconds will return the indicator to the gross
display and deactivate the tare annunciator.
To check or change the tare function select 'tARE'
from the configuration menu and press Pto reveal
the current setting. Pressing the ▲or ▼button
will toggle the setting between 'on' and 'oFF'.
When set as required press Eto return to the
‘tARE’ prompt in the configuration menu.
5.10 Security code: ‘CodE’
Access to the instrument configuration menu may
be protected by a four digit security code which
must be entered to gain access. New instruments
are configured with the default security code 0000
which allows unrestricted access to all
configuration functions.
To enter a new security code select 'CodE' from
the configuration menu and press Pwhich will
cause the indicator to display the existing security
code with one digit flashing. The flashing digit can
be adjusted using the ▲and ▼push-buttons,
when set as required operating the Pbutton will
transfer control to the next digit. When all the
digits have been adjusted press Eto return to the
‘CodE’ prompt. The revised security code will be
activated when the indicator is returned to the
display mode. Please contact BEKA associates
sales department if the security code is lost.
5.11 Reset to factory defaults: ‘rSEt’
This function enables the indicator and the
lineariser to be quickly returned to the factory
default configurations shown in sections 5 and 6.
To reset the indicator or lineariser select ‘rSEt’
from the configuration menu and press P, the
indicator will display one of the reset options
‘ConF’ or ‘LtAb’.
‘ConF’ Resets the indicator to defaults
‘LtAb’ Resets the lineariser to defaults
Using the ▲or ▼push-button select the required
sub-function and press P. To prevent accidental
resetting the request must be confirmed by
entering ‘5urE’. Using the ▲button set the first
flashing digit to ‘5’ and press Pto transfer control
to the second digit which should be set to ‘u’.
When ‘5urE’ has been entered pressing the E
button will reset the selected configuration menus
and return the display to the ‘rSEt’ function in the
configuration menu.
5.12 Under and over-range
If the numerical display range of the indicator is
exceeded, all the decimal points will flash as
shown below:
BA507E BA527E
BA508E BA528E
Underrange -9.9.9.9 -9.9.9.9.9
Overrange 9.9.9.9 9.9.9.9.9
Although not guaranteed, most indicators will
continue to function normally with an input current
between 1.8mA and 4mA, at lower currents the
instrument will display ‘LPLo’ before it stops
functioning.
Under or overrange of the BA527E and BA528E
bargraph is indicated by an activated arrow at the
appropriate end of the bargraph and a flashing
bargraph scale.

13
6. LINEARISER
A sixteen segment, seventeen breakpoint (0 to 16)
lineariser may be selected in the ‘FunC’ section of
the configuration menu. The starting point and
slope of each straight line segment are fully
adjustable allowing the indicator to display most
non-linear process variables in linear engineering
units. Each break-points must occur at a current
greater than the preceeding break-point and less
than the following break-point, in the range 3.8 to
21.0mA Fig 8 shows a typical linearised indicator
characteristic.
Fig 8 shows a typical linearising characteristic
Selecting ‘Lin’ in the ‘FunC’ section of the
configuration menu activates the lineariser, this
does not change the configuration menu shown in
Fig 7, but the 'CAL' and 'SEt' functions are
extended as shown in Fig 9. As with a linear
indicator, calibration may be performed with an
external current source using the 'CAL' function, or
with the internal reference using the 'SEt' function.
The lineariser configuration is retained irrespective
of how the the indicator function ‘FunC’ is
subsequently changed. It is therefore possible to
select and deselect the lineariser without having to
reconfigure it each time.
6.1 Lineariser calibration using an external
current source.
This method allows direct calibration of the
lineariser with an exteral current source and is the
preferred method when traceability is required. If
the exact system non-linearity is unknown, this
method also allows direct calibration from the
variable to be displayed. e.g. the output from a
level sensor in an irregular tank may be displayed
in linear volumetric units by filling the tank with
known incremental volumes and calibrating the
indicator to display the sum of the increments at
each break-point.
The number of break-points required should first
be entered using the 'Add' and 'dEL' functions. In
both these sub-functions the indicator initially
displays the current break-points and the total
number of break-points being used as shown
below.
Display Description of function
'Add' Add a break-point
Adds a new break-point before the
displayed break-point. The calibration
of existing break-points is not changed,
but the identification number of all
subsequent break-points is increased
by one.
'dEL' Remove a break-point
Removes the displayed break-point and
joins the preceding break-point to the
following break-point with a straight
line. The identification number of all
subsequent break-points is decreased
by one.
To add a break-point using the ▲or ▼button
select 'CAL' from the configuration menu and press
Pwhich will result in the 'Add' sub-function prompt
being displayed. To enter the sub-function press P
which will reveal the current break-point and the
total number of break-point which have already
been entered. Each subsequent operation of the
Ppush-button will introduce an additional break-
point up to the maximum of 17. When adding a
break-point to a calibrated indicator, the insertion
position for the new break-point can be selected
using the ▲and ▼push-buttons.
The delete break-point sub-function 'dEL' operates
in exactly the same way as the 'Add' sub-function
described above. Once within the ‘dEL’ sub-
function each time the Pbutton is pressed a break-
point is removed. When deleting a break-point
from a calibrated indicator, the break-point to be
deleted can be selected using the ▲and ▼push-
buttons. The minimum number of break-
points is 2, break-points 0 and 1.

14

15
When the required number of break-points have
been entered, return to the linearisation sub-menu
by pressing E. The indicator will display the 'Add'
or 'dEL' prompt depending upon the last function
used.
Now that the number of break-points has been
entered, the input current at which each occurs
and the corresponding indicator display can be
defined by the ‘Pts’ sub-function.
Using the ▲or ▼button select 'PtS' from the sub-
menu and press Pwhich will select the first break-
point '0 : n', where n is the total number of break-
points entered. The selected break-point can be
changed using the ▲and ▼buttons. When the
required break-point has been selected, set the
indicator input current to the exact value at which
the break-point is required and press P. Then
using the ▲and ▼buttons and the Pbutton to
move between digits, enter the required indicator
display at this break-point.
When set as required, press the Epush-button to
enter the required indicator display at this break-
point and return to the sub-menu from which the
next beak-point can be selected.
When all the break-points have been calibrated
pressing Etwice will return the indicator to the
‘CAL’ function in the configuration menu.
Note: The indicator input current must be adjusted
to the required value before the P button is
operated to enter the required indicator display.
6.2 Lineariser calibration using the internal
reference.
The ‘SEt’ function enables the lineariser to be
calibrated without the need for an accurate
external current source. Throughout the
calibration the indicator input current may be any
value between 4 and 20mA.
The ‘SEt’ functions contains four sub-functions.
Display Description of function
'Add' Add a break-point
Adds a new break-point before the
displayed break-point. The calibration
of existing break-points is not changed,
but the identification number of all
subsequent break-points is increased
by one.
'dEL' Remove a break-point
Removes the displayed break-point and
joins the preceding break-point to the
following break-point with a straight
line. The identification number of all
subsequent break-points is decreased
by one.
'in' Defines the current at which break-
point occurs
Enables the required current at each
break-point to be defined without
having to input an accurate input
current to the indicator.
'diSP' Defines indicator display at break-
point
Enables the indicator display at each
break-point to be defined.
The number of break-points required should first
be entered using the 'Add' and 'dEL' sub-
functions. In both these sub-functions the indicator
initially displays the current break-point and the
total number of break-point being used as shown
below.
To add a break-point, using the ▲or ▼button
select 'SEt' from the configuration menu and press
Pwhich will result in the 'Add' sub-function prompt
being displayed. To enter the sub-function press P
which will reveal the current break-point and the
total number of break-points which have already
been entered. Each subsequent operation of the
Ppush-button will introduce an additional break-
point up to the maximum of 17. When adding a
break-point to a calibrated indicator, the insertion
position for the new break-point can be selected
using the ▲and ▼push-buttons.
The delete segment sub-function 'dEL' operates in
exactly the same way as the 'Add' sub-function
described above. Once within the ‘dEL’ function
each time the Pbutton is pressed a break-point is
removed. When deleting a break-point from a
calibrated indicator, the break-point to be deleted
can be selected using the ▲and ▼push-buttons.
The minimum number of break-points is 2, break-
points 0 and 1.

16
When the required number of break-points has
been entered, return to the linearisation sub-menu
by pressing E. The indicator will display the 'Add'
or 'dEL' prompt depending upon the last sub-
function used. The indicator input current and
corresponding indicator display at each break-
point, can now be entered using the ‘in’ and ‘diSP’
sub-functions.
Using the ▲or ▼button select 'in' from the sub-
menu and press Pwhich will reveal the first break-
point '0 : n', where n is the total number of break-
points entered. Press Pand use the ▲and ▼
buttons and the Pbutton to move between digits,
to enter the input current at which the first break-
point is required, usually 4.000mA. When set as
required, press Eto return to the ‘0 : n’ prompt
from which the the next break-point can be
selected using the ▲and ▼buttons. When the
required break-point has been selected press P
and enter the indicator input current at which this
break-point is required. Repeat this procedure until
the indicator input current at all the break-points
has been defined and then return to the ‘in’ sub-
function by pressing the Ebutton.
The corresponding indicator display at each of the
break-points can now be defined with the ‘diSP’
sub-function Using the ▲and ▼buttons select
the ‘diSP’ sub-function and press Pwhich will
reveal the first break-point '0 : n', where n is the
total number of break-points entered. Press Pand
use the ▲and ▼buttons and the Pbutton to
move between digits, to enter the required
indicator display at this first break-point. When set
as required, press Eto return to the ‘0 : n’ prompt
from which the the next break-point can be
selected using the ▲or ▼buttons. When the
required break-point has been selected press P
and set the required indicator display at this
break-point.
Repeat this procedure until the indicator display at
all the break-points has been defined and then
return to the ‘SEt’ function in the configuration
menu by pressing the Ebutton twice.
6.3 Lineariser error message
If an attempt is made to position a break-point at a
current which is not greater than the current of the
preceeding break-point, or at a current which is not
less than the current of the following break-point,
the error message ‘FaiL’ will be displayed. This
error message will also be displayed if an attempt
is made to position a break-point outside the
current range 3.8 to 21.0mA.
6.4 Under and over-range
The lineariser does not change the under and
over-range indication described in section 5.12.
At input currents below that specified for the first
break-point (0), the indicator will continue to use
the specified slope of the first segment. Although
not guaranteed, most indicators will continue to
function normally with an input current between
1.8mA and 4mA, at lower currents the instrument
will display ‘LPLo’ before it stops functioning.
At input currents above that specified for the last
break-point, the indicator will continue to use the
slope specified for the last lineariser segment.
6.5 Lineariser default configuration
When the lineariser is reset to the default
conditions using the ‘rSEt’ reset function described
in section 5.11, the defaults conditions are:
BA507E BA527E
BA508E BA528E
First break-point 4mA 0.0 0.00
Second break-point 20mA 100.0 100.00

17
7. MAINTENANCE
7.1 Fault finding during commissioning
If an indicator fails to function during
commissioning the following procedure should be
followed:
Symptom Cause Solution
No display Incorrect wiring Check wiring
There should be
0.6 to 1.2V
between terminals
1 & 3 with terminal
1 positive.
With an optional
loop powered
backlight, there
should be 3.4 to
5V between
terminals 3 & 12
with terminal 12
positive.
No display
0V between
terminals 1 & 3.
Incorrect wiring
or no power
supply
Check supply
voltage and
voltage drop
caused by all the
instruments in the
loop.
All decimal points
flashing.
Underrange if
–ve sign
displayed or
overrange.
Recalibrate the
numerical display.
Unstable display 4/20mA input is
noisy.
Eliminate ripple on
4/20mA power
supply and/or
decrease indicator
resolution.
Unable to enter
configuration
menu.
Incorrect
security code
entered.
Enter correct
security code, or
contact BEKA if
the code has been
lost.
7.2 Fault finding after commissioning
ENSURE PLANT SAFETY BEFORE
STARTING MAINTENANCE
If an indicator fails after it has been functioning
correctly follow the procedure shown in section
7.1. If this does not reveal the cause of the fault, it
is recommended that the instrument is replaced.
This can be done without disconnecting power, but
while the indicator is disconnected the 4/20mA
loop will be open circuit.
7.3 Servicing
All BA507E, BA527E, BA508E and BA528E loop
powered indicators are interchangeable if the
required optional backlight and alarms are fitted. A
single spare instrument may quickly be
recalibrated to replace any instrument that is
damaged or fails. No attempt should be made to
repair instruments at component level.
We recommend that faulty instruments
are returned to BEKA associates or to
your local BEKA agent for repair.
7.4 Routine maintenance
The mechanical condition of the instrument and
electrical calibration should be regularly checked.
The interval between inspections depends upon
environmental conditions. We recommend that
initially instrument calibration should be checked
annually.
7.5 Guarantee
Indicators which fail within the guarantee period
should be returned to BEKA associates or our local
agent. It is helpful if a brief description of the fault
symptoms is provided.
7.6 Customer comments
BEKA associates is always pleased to receive
comments from customers about our products and
services. All communications are acknowledged
and whenever possible, suggestions are
implemented.

18
8. ACCESSORIES
8.1 Scale card
All models have a window on the right hand side of
the display through which to view a scale card
showing the units of measurement such as oC,
mBar, RPM. New indicators are fitted with a scale
card showing the units of measurement specified
when the indicator was ordered, if the units are not
specified a blank scale card will be fitted. A pack
of scale cards pre-printed with common units of
measurement is available as an accessory. These
can easily be fitted on-site to the indicator without
opening the indicator enclosure or removing it from
the panel, See section 4.3 of this instruction
manual.
Custom scale cards for applications requiring less
common units of measurement are also available.
8.2 Tag information
New indicators are supplied with tag or application
information thermally printed onto the rear panel
adjacent to the terminals, legend as specified
when the indicator was ordered. This tag
information is not visible from the front of the
instrument after installation.
8.3 Alarms
CAUTION
These alarms outputs should not be used for
critical safety applications such as an
emergency shut down system.
All models can be supplied with factory fitted dual
solid state, single pole alarm outputs. Each alarm
output may be independently conditioned as a high
or low alarm with a normally open or normally
closed output in the non-alarm condition.
When the 4/20mA current powering the indicator is
removed both alarm outputs will open irrespective
of configuration. The open circuit condition should
therefore be chosen as the alarm condition when
designing an alarm system. Fig 10 illustrates the
conditions available and shows which are fail safe.
When an alarm occurs an alarm annunciator on
the indicator front panel is activated and if required
the numerical display can alternate between the
measured value and the alarm channel
identification ‘ALr1’ or ‘ALr2’.
CAUTION
The alarms are activated by the indicator’s
numerical display. Use of the Tare Function
‘tArE’ will change the numerical display, the
alarms will continue to function at the original
displayed value, but this will correspond to a
different input current.
Fig 10 Alarm outputs
Configurable functions for each alarm include
adjustable setpoint, hysteresis, alarm delay and
alarm accept.
8.3.1 Solid state output
Each alarm has a galvanically isolated single pole
solid state switch output which as shown in Fig 11.
The output is polarised and current will only flow in
one direction.
Ron = less than 5Ω+ 0.7V
Roff = greater than 1MΩ
Fig 11 Equivalent circuit of each alarm output
The solid state output of each alarm may be used
to switch any dc circuit with parameters equal to or
less than:
V = 40V
I = 200mA