BEKA BA364G User manual

Issue: 5
9th July 2019
BA364G and BA364E
Two Input
Intrinsically safe
Counter
Issue 5

1. Description
2. Operation
2.1 Initialisation
2.2 Controls
2.3 Displays
3. Intrinsic Safety Certification
3.1 ATEX gas certification
3.2 Zones, gas groups & T rating
3.3 Special conditions for safe use
3.4 Power supply
3.5 Pulse input terminals
3.5.1 Sensors that do not require
energising.
3.5.2 Sensors that do require
energising.
3.6 Remote reset terminals
3.7 Certification label information
4. System Design for Hazardous Areas
4.1 Use with Zener barriers
4.1.1 Power supply
4.1.2 Pulse input
4.1.3 Switch contact input
4.1.4 2-wire proximity detector input
4.1.5 Open collector
4.1.6 Magnetic pick-off input
4.1.7 Voltage pulse input
4.1.8 Remote reset
4.2 Use with galvanic isolators
4.2.1 Power supply
4.2.2 Pulse input
4.2.3 Switch contact input
4.2.4 2-wire proximity detector input
4.2.5 Open collector
4.2.6 Magnetic pick-off input
4.2.7 Voltage pulse input
4.2.8 Remote reset
5. Installation
5.1 Location
5.2 Installation procedure
5.3 EMC
5.4 Units of measurement and tag marking
on scale card.
6. Configuration and Calibration
6.1 Calibration structure
6.2 Accessing configuration functions
6.3 Summary of configuration functions
6.4 Input A: inPut-A
6.5 Input A type: inP.tYPE
6.6 Input A debounce: dEbouncE
6.7 Input b: inPut-b
6.8 Input b type: inP.tYPE
6.9 Input b debounce: dEbouncE
6.10 Input A pulse counting edge: CntEdg-A
6.11 Input b pulse counting edge: CntEdg-b
6.12 Display update interval: uPdAtE
6.13 Counting function: Count
6.14 Upper display: di5P-1
6.15 Lower display: di5P-2
6.16 Position of the decimal points: dP
6.17 Total scale factor: 5CALE .t
6.18 Rate scale factor: 5CALE .r
6.19 Timebase: t-bA5E
6.20 Display filter: FiLtEr
6.21 Direction of count: uP or dn
6.22 Reset value: CLr VAL
6.23 Local reset: LoC CLr
6.24 Local total reset: Clr tot
6.25 Local grand total reset: Clr Gtot
6.26 Reset grand total from configuration
menu: Clr Gtot
6.27 Security code: CodE
6.28 Reset configuration to factory defaults:
r5Et dEF
6.29 Display overflow
7. Pulse Output
7.1 Intrinsic safety
7.2 System design
7.3 Configuration
7.4 Access Pulse output sub-menu:
PuL5E oP
7.5 Enable pulse output: EnbL
7.6 Source of output pulse: 5ourCE
7.7 Divide output pulse frequency: diVidE
7.8 Output pulse width: durAtion
8. Configuration example
2222222222222222222222222
CONTENTS
The BA364G and BA364E are CE marked to show compliance with the European Explosive Atmospheres
Directive 2014/34/EU and the European EMC Directive 2014/30/EU

9. Maintenance
9.1 Fault finding during commissioning
9.2 Fault finding after commissioning
9.3 Servicing
9.4 Routine maintenance
9.5 Guarantee
9.6 Customer comments
10. Accessories
10.1 Units of measurement and instrument
identification.
10.2 Backlight
10.3 Alarms
10.3.1 Solid state output
10.3.2 Intrinsic safety
10.3.3 Summary of configuration
functions.
10.3.4 Alarm enable: EnbL
10.3.5 Type of alarm: tYPE
10.3.6 Setpoint adjustment:
5P1x & 5P2x
10.3.7 Alarm function: Hi.Lo
10.3.8 Alarm output status: no .nC
10.3.9 Hysteresis: H5tr
10.3.10 Alarm delay: dELA
10.3.11 Alarm silence time: 5IL
10.3.12 Flash display when alarm
occurs: FL5H
10.3.13 Access Setpoint: AC5P
10.3.14 Adjusting alarm setpoints
from display mode.
10.4 4/20mA output
10.4.1 Intrinsic safety
10.4.2 System design
10.4.3 Configuration and calibration
10.4.4 Access 4/20mA output
sub-menu: 4-20 oP
10.4.5 Enable 4/20mA output: EnbL
10.4.6 Select rate or total source:
4-20tYPE
10.4.7 Display which corresponds to
4mA output: 4.000
10.4.8 Define display for 20mA output
Appendix 1 ATEX Dust certification
Appendix 2 IECEx certification
Appendix 3 ETL & cETL certification gas
and dust certification.
Appendix 4 BA364E Two input Counter
3

1. DESCRIPTION
The BA364G and BA364E are field mounting,
intrinsically safe two input Counters which will accept
pulses on one or both inputs. Both may be
configured to show one of the following totals in
engineering units on their eight digit displays:
Input A + Input b
Input A - Input b
Input A direction controlled by Input b
Quadrature input
(Input A and Input b electrically 90oapart)
A smaller six digit display may be activated to show
the composite pulse rate in engineering units per
second, minute or per hour.
In addition to simple counting applications, the
quadrature input decoder allows the direction of
movement and position of a shaft or cable to be
displayed.
The optically-isolated pulse output may be
configured to synchronously retransmit either of the
two inputs or a scaled output when least significant
digit of the total display is incremented.
This instruction manual supplements the abbreviated
instruction sheet supplied with each instrument.
The BA364G and the BA364E are functionally
identical and have similar certifications, but differ in
mechanical construction and options. The
differences are summarised in the following table.
BA364G BA364E
Separate terminal
compartment.
No Yes
Pulse output Yes Yes
Backlight Option Yes
4/20mA output. Option Yes
Dual alarms Option Yes
Certification
IECEx Gas & dust Gas
ATEX Gas & dust Gas
ETL & cETL Gas & dust Gas & dust
The main sections of this instruction manual describe
the BA364G, but also apply to the BA364E. Details
of the BA364E mounting and terminals are contained
in Appendix 4.
The BA364G and BA364E have been ATEX certified
intrinsically safe by Notified Body Intertek Testing
and Certification Ltd and comply with the European
ATEX Directive 2014/34/EU. The BA364G has
ATEX gas and dust certification, but the BA364E
only has ATEX gas certification.
The main sections of this manual describe ATEX gas
certification. ATEX dust certification of the BA364G
is described in Appendix 1.
For international applications the BA364G and
BA364E also have IECEx certification which is
described in Appendix 2. The BA364E does not
have IECEx dust certification.
For applications in the USA and Canada the BA364G
and BA364E Counters have ETL & cETL certification
which is described in Appendix 3.
2. OPERATION
Fig 1 shows a simplified block diagram of the
BA364G Counter. The instrument has two inputs, A
and b, which can be individually configured to accept
pulses from most types of sensor. The BA364G can
display the total number of pulses received from
each input, or their sum or difference, together with
associated rates on a separate display.
Fig 1 BA364G block diagram
The BA364G can be supplied with any of the
following factory fitted accessories:
Internally powered display backlight
Dual isolated alarms
Isolated 4/20mA output
4

2.1 Initialisation
Each time power is applied to a BA364G Counter
initialisation is performed. After a short delay the
following display sequence occurs:
All segments of the display are activated
Counter starts functioning, using the
configuration information stored in the
instrument’s permanent memory. Unless total
and grand total displays have been reset, new
pulses will be added to the existing totals.
2.2 Controls
The BA364G Counter is controlled and configured
via four front panel push buttons. In the display
mode i.e. when the instrument is counting the push
button functions are:
Push Button Functions
) + &Grand total - shows Lo followed by least
significant 8 digits of the 16 digit grand
total.
)+*Grand total - shows Hi followed by the
most significant 8 digits of the 16 digit
grand total.
If Local Grand Total Reset CLr Gtot in
the instrument configuration menu has
been activated, operating the )and
*buttons simultaneously for ten
seconds will result in Clr .no being
displayed with the no flashing.
Operating the *or &button will
change the display to Clr .YE5,the)
button will then reset the grand total to
zero which will be confirmed by a brief
display of Gt Clrd. See 6.25
& + *If Local Total Reset CLr tot in the
instrument configuration menu has
been activated, operating the &and
*buttons simultaneously for three
seconds will reset the total display to
zero and clear any pulses stored in the
optional pulse output.
See 6.24
(+ &Shows in succession firmware version
number, instrument function
2ch cntr and any output accessories
that are fitted:
-A Dual alarm outputs
-P Pulse output (always fitted|)
-C 4/20mA output
( + )Access to configuration menu
Note: When optional alarms are fitted, the BA364G
Counter may be configured to provide direct access
to the alarm setpoints from the display mode when
the (and *buttons are operated simultaneously.
See 10.3.13 and 10.3.14
2.3 Displays
The BA364G Counter has two digital displays and
associated annunciators, plus a pulse input indicator
as shown on the front cover of this manual.
Total Shows the total pulse count on the
display upper eight digit display. May be
reset via front panel push buttons or
by a remote reset switch.
Rate Shows the pulse rate on the lower
display six digit display. Total and rate
displays may be reversed.
Pulse input This disc in the lower left hand
indicator. corner of the display 'rotates' for
two seconds each time an input pulse
is received on either input. Appears
to rotate continuously when
combined input frequency on both
inputs exceeds 0.5Hz.
Reset Activated while the total display
annunciator is being reset via the front panel push
buttons, or the external reset
terminals.
Rate Identifies rate display
annunciator
Total Identifies total display
annunciator
RTx Retransmitted pulse
annunciator annunciator.
Depends upon the setting of 5ource
in the pulse output configuration
menu.
5caled:
Annunciator activated each time
pulse output open collector is on,
i.e. Ron is less than 60+ 3V.
direct:
Annunciator continuously
activated.
5

3. INTRINSIC SAFETY CERTIFICATION
The BA364G Counter has ATEX, IECEx and ETL
gas and dust certification. This section of the
instruction manual describes ATEX gas certification.
Dust, IECEx and other approvals are each described
in separate appendixes to this manual.
3.1 ATEX gas certification
Notified Body Intertek Testing and Certification Ltd
have issued the BA364G with an EU-Type
Examination Certificate number ITS16ATEX28408X.
This confirms compliance with harmonised European
standards and it has been used to confirm
compliance with the European ATEX Directive for
Group II, Category 1G equipment. The Counter
carries the community mark and subject to local
codes of practice may be installed in any of the
European Economic Area (EEA) member countries.
ATEX certificates are also acceptable for installations
in Switzerland.
This section of the instruction manual describes
ATEX installations in explosive gas atmospheres
conforming with EN60079-14 Electrical installations
design, selection and erection. When designing
systems for installation outside the UK the local
Code of Practice should be consulted.
3.2 Zones, gas groups and T rating
The BA364G Counter has been certified
Ex ia IIC T5 Ga -40ºC Ta +70ºC. When
connected to a suitable system it may be installed in:
Zone 0 explosive gas air mixture
continuously present.
Zone 1 explosive gas air mixture likely
to occur in normal operation.
Zone 2 explosive gas air mixture not
likely to occur, and if it does will
only exist for a short time.
Be used with gases in groups:
Group A propane
Group B ethylene
Group C hydrogen
Having a temperature classification of:
T1 450°C
T2 300°C
T3 200°C
T4 135°C
T5 100°C
At ambient temperatures between -40 and +70°C.
The specified operating temperature of the BA364G
Counter is -40 to +70°C. At temperatures below -
20°C the instrument will continue to count, but the
display digits will change increasingly slowly and the
contrast will be reduced.
This allows the BA364G Counter to be installed in all
gas Zones and to be used with most common
industrial gases except carbon disulphide and ethyl
nitrite which have an ignition temperature of 95°C.
3.3 Special conditions for safe use
The ATEX certificate has an ‘X’ suffix indicating that
special conditions apply for installation in Zone 0.
When installed in a Zone 0 potentially explosive
atmosphere requiring EPL Ga apparatus, the
instrument shall be installed such that even in
the event of rare incidents, an ignition source
due to impact or friction between the aluminium
label and iron/steel is excluded.
No special conditions apply when the BA364G
Counter is installed in Zone 1 or in Zone 2.
3.4 Power supply
When installed in a hazardous area the BA364G
Counter should be powered via a certified Zener
barrier or galvanic isolator from a dc supply located
in the safe area, or from associated apparatus with
an intrinsically safe output.
The input safety parameters of terminals 1 and 2 are:
Ui = 28V dc
Ii = 200mA dc
Pi = 0.84W
Any certified Zener barrier or galvanic isolator with
output safety parameters equal to or less than these
limits may be used.
The maximum equivalent capacitance and
inductance between terminals 1 and 2 is:
Ci = 2nF
Li = 4µH
To determine the maximum permissible cable
parameters the above figures, which are small and
may be ignored in many applications, should be
subtracted from the maximum permitted cable
parameters specified for the Zener barrier or
galvanic isolator powering the BA364G Counter.
6

3.5 Pulse input terminals
The BA364G Counter has two pulse inputs, A and b,
that may be individually configured for use with most
types of sensor. Each input is a separate
intrinsically safe circuit, although the negative side of
each input is internally connected to the negative
side of the power supply and reset terminal RS2.
See Fig 1. The two inputs should not be connected
in parallel.
Some types of sensor that may be connected to the
BA364G inputs, such as a switch contact or a 2-wire
proximity detector, require energising to determine
their state. For sensors requiring energising fitting
an external link between terminals 3 & 4 of the
BA364G for input A and between terminals 7 & 8 for
input b, connects an internal 7V, 6mA supply to the
respective input. Energising is not required when a
BA364G input is connected to a voltage pulse
source.
Fitting an energising link changes the output safety
parameters of each BA364G input as shown in the
following table which also shows the types of sensor
requiring energising (link fitting).
Output safety
parameters of each
input.
Type of input Link* Uo Io Po
Switch contact Yes 10.5V 9.2mA 24mW
Proximity detector Yes 10.5V 9.2mA 24mW
Open collector Yes 10.5V 9.2mA 24mW
Magnetic pick-off No 1.1V 0.5mA 0.2mW
Voltage input (low) No 1.1V 0.5mA 0.2mW
Voltage input (high) No 1.1V 0.5mA 0.2mW
*For input A link terminals 3 and 4
*For input b link terminals 7 and 8
3.5.1 Sensors that do not require energising
Magnetic pick-offs and voltage pulse inputs do not
require energising, see section 3.5. For intrinsic
safety purposes, sources of energy with output
parameters less than 1.5V; 100mA and 25mW are
considered to be simple apparatus (Clause 5.7 of
EN60079-11).
When terminals 3 & 4 and terminals 7 & 8 are not
linked, the associated BA364G Counter input
complies with the requirements for simple apparatus.
This allows the output parameters of the Counter
pulse input to be ignored when assessing the safety
of the sensor connected to the Counter input.
This allows almost any certified intrinsically safe
voltage pulse or certified magnetic pick-off to be
directly connected to one of the BA364G Counter
inputs.
The BA364G EU-Type Examination Certificate
specifies that the equivalent capacitance and
inductance of each BA364G Counter input are:
Ci = 2nF
Li = 4H
To determine the maximum permissible cable
parameters these figures should be subtracted from
the maximum permitted cable parameters specified
for the sensor connected to the input terminals of the
Counter. However, the Counter input parameters are
very small and they are unlikely to make any
significant difference to the allowable cable
parameters.
3.5.2 Sensors that require energising
Switch contacts, proximity detectors and open
collector inputs require energising as described in
section 3.5. When energised, the output parameters
of each BA364G Counter input are:
Uo = 10.5V
Io = 9.2mA
Po = 24mW
These parameters do not comply with the
requirements for simple apparatus and should be
included when assessing the safety of the circuits
connected to the inputs of the BA364G Counter.
Any certified intrinsically safe sensor or simple
apparatus may be connected to an energised
BA364G Counter input providing that the sensor's
input parameters are equal to, or greater than, the
output safety parameters of the BA364G Counter
input which are shown above. This is not restrictive
and most sensors will comply.
This allows most mechanically operated switch
contacts, certified open collector transistors and
intrinsically safe NAMUR proximity detectors to be
directly connected to a BA364G Counter input. The
sensor should be located within the same hazardous
area as the Counter and, together with associated
wiring, be able to withstand a 500V rms insulation
test to earth.
The maximum capacitance and inductance that may
be safely connected to each Counter input when
energised (link connected) is:
Co = 2.4µF
Lo = 200mH
Again this is not restrictive and most sensors will
comply.
7

3.6 Remote reset terminals
The BA364G Counter may be reset to zero by
connecting the reset terminals RS1 and RS2
together for more than one second. These two
terminals have the following input and output safety
parameters:
Uo = 3.8V
Io = 1mA
Po = 1mW
Ui = 28V dc
Ii = 200mA dc
Pi = 0.84W
The equivalent capacitance and inductance between
them is:
Ci = 0nF
Li = 0H
The maximum capacitance and inductance that may
be safely connected between the reset terminals
RS1 and RS2 is:
Co = 40µF
Lo = 1H
The total Counter display may be reset to zero from
within the hazardous area by any mechanically
operated switch contact connected directly to
terminals RS1 and RS2. To reset the total display
from the safe area a Zener barrier or intrinsically
safe relay is required to transfer the contact closure
into the hazardous area. Almost any intrinsically
safe relay with certification permitting the contacts to
be connected to equipment in the hazardous area
may be used. A positive diode return Zener barrier is
not suitable for this application.
Alternatively, the BA364G Counter may be
configured so that the total display is reset to zero
when the &and *push buttons are operated
simultaneously for more than three seconds.
See 6.24.
3.7 Certification label information
The certification information label is fitted in a recess
on the top outer surface of the instrument enclosure.
It shows the ATEX and IECEx certification
information, plus BEKA associates name and
location and the instrument model number. Non
European certification information may also be
included.
BA364G Certification information label
8

4. SYSTEM DESIGN FOR HAZARDOUS AREAS
4.1 Use with Zener barriers
Zener barriers are the least expensive intrinsically
safe interface between a safe and hazardous area.
However they require a high integrity earth
connection that may be expensive to install and they
do not provide isolation. When a high integrity earth
connection is not already available, it may be less
expensive and complicated to use galvanic isolators
for the installation of a single BA364G Counter.
Terminals 2, 6, 10 and RS2 of the BA364G Counter
are internally connected together. If any of these
terminals are earthed, as shown in Figs 2 & 3, the
other terminals should only be connected to the
same earth, i.e. the barrier busbar, or to circuits that
have 500V rms insulation to earth.
Any certified Zener barriers may be used with the
BA364G Counter providing their output parameters
do not exceed the input parameters of the terminals
to which they are connected. Only one polarity of
Zener barrier i.e. positive or negative, may be used
in each Counter system.
Fig 2 illustrates the basic circuit that is used for all
BA364G Counter installations protected by Zener
barriers. For simplicity, connections for the pulse
output and optional alarms and 4/20mA output are
shown separately in sections 7 and 10 of this
manual.
Fig 2 BA364G used with Zener barriers
Alternatively the pulse sources may be located in the
safe area. Fig 3 shows how an additional Zener
barrier is used to transfer the signal to the Counter in
the hazardous area. When more than one Zener
barrier is used in a system all must have the same
polarity. i.e. all positive or all negative barriers.
When designing a system it is important to
remember that terminals 2, 6, 10 and RS2 are
interconnected within the BA364G See Fig 1.
Fig 3 BA364G used with Zener barriers
pulse source in safe area.
4.1.1 Power supply
The BA364G Counter requires a minimum of 10V
between terminal 1 & 2 and consumes:
10mA without optional backlight
plus 16mA for optional backlight
plus 6mA when terminals 3 & 4 are linked
plus 6mA when terminals 7 & 8 are linked
Any certified Zener barrier may be used to power a
BA364G Counter providing the output safety
parameters of the barrier are equal to or less than
the input safety parameters of terminals 1 & 2 of the
BA364G Counter.
Although this allows a wide variety of barriers to be
used, a positive polarity 28V; 93mA; 300Zener
barrier, which has an end-to-end resistance of about
340, is an industry standard device which is
frequently used. With this barrier the supply voltage
in the safe area, with both counter inputs energised,
must be between 17.5V and the maximum working
voltage of the Zener barrier which, depending upon
manufacturer, will be approximately 26V. The
minimum voltage increases to 23V if a display
backlight is fitted.
9

4.1.2 Pulse input
As shown in Fig 2 the BA364G can count pulses
from a wide variety of sensors in the hazardous
area, or from the safe area as shown in Fig 3.
No Zener barrier is required in series with each input
if the intrinsically safe pulse source is located within
the same hazardous area as the BA364G Counter.
The following table shows the switching thresholds
for the various types of sensor. For reliable
counting the pulse input must fall below the lower
threshold and rise above the upper threshold.
Input sensor
Switching thresholds
Lower Upper
Switch 1001000
Proximity detector 1.2mA 2.1mA
Open collector 2k10k
Magnetic pick-off 0mV 40mV peak
Voltage pulse low 1.0V 3.0V
Voltage pulse high 3.0V 10.0V
4.1.3 Switch contact input
Any mechanically activated switch contact located in
the same hazardous area as the BA364G Counter
may be directly connected to the pulse input
terminals 5 & 6 or 9 & 10 providing the switch and
associated wiring can withstand a 500V rms
insulation test to earth. Most magnetically activated
reed relays comply with these requirements. The
BA364G contains a configurable debounce circuit to
prevent contact bounce being counted.
See section 6.6 for details of debounce configuration
and the typical maximum counting frequency.
4.1.4 2-wire proximity detector input
Most certified intrinsically safe 2-wire proximity
detectors complying with NAMUR switching
thresholds may be connected to the BA364G
Counter inputs, providing the input safety parameters
of the proximity detector are equal to or greater than
the output safety parameters of the Counter inputs
i.e.
Ui ≥10.5V dc
Ii ≥9.2mA dc
Pi ≥24mW
and the minimum operating voltage of the proximity
detector is less than 7.5V.
See section 6.6 for details of the typical maximum
counting frequency.
4.1.5 Open collector input
Most certified open collector sensors located in the
same hazardous area as the BA364G Counter may
be directly connected to pulse input terminals 5 & 6
and 9 & 10 providing the sensor and associated
wiring can withstand a 500V rms insulation test to
earth. The open collector device must comply with
the requirements for simple apparatus or have input
safety parameters equal to or greater than:
Ui ≥10.5V dc
Ii ≥9.2mA dc
Pi ≥24mW
See section 6.6 for details of the typical maximum
counting frequency.
4.1.6 Magnetic pick-off input
CoiL in the input configuration menu is a low level
voltage pulse input intended for use with magnetic
pick-off sensors producing an ac output. For a CoiL
input the pulse input terminals 5 & 6 and 9 & 10 of
the BA364G Counter comply with the requirements
of simple apparatus allowing connection to any
certified intrinsically safe magnetic pick-off within the
hazardous area having output parameters equal to
or less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
The maximum permitted cable parameters will be
defined by the magnetic pick-off’s intrinsic safety
certificate less the Counters input parameters Ci and
Li which are small and can often be ignored,
See section 6.6 for details of the typical maximum
counting frequency.
4.1.7 Voltage pulse input
Two voltage pulse input ranges are selectable in the
configuration menu, VoLt5 L and VoLt5 H. When
configured for either of the voltage pulse ranges, the
pulse input terminals 5 & 6 and 9 and 10 of the
BA364G Counter comply with the requirements of
simple apparatus allowing connection to any
intrinsically safe voltage source within the hazardous
area having output parameters equal to or less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
The maximum permitted cable parameters will be
defined by the voltage source intrinsic safety
certificate less the BA364G Counter input
parameters which are small and can often be
ignored.
See section 6.6 for details of the typical maximum
counting frequency.
10

4.1.8 Remote reset
The BA364G Counter total display may be remotely
reset to zero by connecting terminals RS1 & RS2
together for more than one second. Permanent
interconnection inhibits counting. Remote resetting
may be accomplished by any mechanically operated
switch located in the same hazardous area as the
Counter providing it and the associated wiring can
withstand a 500V rms insulation test to earth. No
Zener barrier is required.
A BA364G may also be remotely reset from the safe
area. Any switch may be used but a Zener barrier is
required to transfer the contact closure into the
hazardous area which may be combined with the
supply barrier so that only one package is required.
A diode return barrier is not suitable for this
application. Fig 2 illustrates how the BA364G total
display may be reset from both the safe and the
hazardous area.
Note: The BA364G can be configured to reset the
total display to zero when the &and *push
buttons are operated simultaneously for more than
three seconds - see 6.24.
4.2 Use with Galvanic Isolators
Galvanic isolators are probably the simplest
intrinsically safe interface to install as they provide
isolation and do not require a high integrity earth
connection.
Any certified galvanic isolator with output parameters
less than the input parameters of the BA364G having
the correct function may be used.
Fig 4 BA364G protected by galvanic isolators.
Fig 4 illustrates the basic circuit that is used for all
BA364G Counter installations protected by galvanic
isolators. For simplicity, connections for the pulse
output, optional alarms and 4/20mA output are
shown separately in sections 7 and 10 of this
manual.
Alternatively the pulse source may be located in the
safe area. Fig 5 shows how an additional galvanic
isolator is used to transfer the signal to the BA364G
Counter in the hazardous area, although it may be
difficult to find isolators for some sensors.
11

Fig 5 Pulse source in safe area
4.2.1 Power supply
The BA364G Counter requires a minimum of 10V
between terminal 1 & 2 and consumes 10mA plus
6mA for each input that is energised, a maximum
total of 22mA if both inputs are energised. The
optional backlight increases the current consumption
by 16mA. Any certified galvanic isolator may be
used to power a BA364G Counter providing the
output safety parameters of the isolator are equal to
or less than the input safety parameters of terminals
1 & 2 of the BA364G Counter. These requirements
are not restrictive and allow a wide range of galvanic
isolators, such as solenoid drivers, to be used.
4.2.2 Pulse input
As shown in Fig 4 the BA364G can count pulses
from a wide variety of sensors in the hazardous
area, or from the safe area as shown in Fig 5.
No galvanic isolator is required in series with the
input if the intrinsically safe pulse source is located
within the same hazardous area as the BA364G
Counter.
The following table shows the switching thresholds
for the various types of sensor. For reliable
counting the pulse input must fall below the lower
threshold and rise above the upper threshold.
Input sensor
Switching thresholds
Lower Upper
Switch 1001000
Proximity detector 1.2mA 2.1mA
Open collector 2k10k
Magnetic pick-off 0mV 40mV peak
Voltage pulse low 1.0V 3.0V
Voltage pulse high 3.0V 10.0V
4.2.3 Switch contact input
Any mechanically activated switch contact located in
the same hazardous area as the BA364G Counter
may be directly connected to pulse input terminals 5
& 6 or 9 & 10 providing the switch and associated
wiring can withstand a 500V rms insulation test to
earth. Most magnetically activated reed relays
comply with these requirements. The BA364G
contains a configurable debounce circuit to prevent
contact bounce being counted. Three levels of de-
bounce protection are independently available. See
section 6.6.
See section 6.6 for details of the typical maximum
counting frequency.
4.2.4 2-wire proximity detector input
Most certified intrinsically safe 2-wire proximity
detectors complying with NAMUR switching
thresholds may be connected to the BA364G
Counter inputs, providing the input safety parameters
of the proximity detector are equal to or greater than
the output safety parameters of the Counter inputs
i.e.
Ui ≥10.5V dc
Ii ≥9.2mA dc
Pi ≥24mW
and the minimum operating voltage of the proximity
detector is less than 7.5V.
See section 6.6 for details of the typical maximum
counting frequency.
12

4.2.5 Open collector input
Most certified open collector sensors located in the
same hazardous area as the BA364G Counter may
be directly connected to pulse input terminals 5 & 6
or 9 & 10 providing the sensor and associated wiring
can withstand a 500V rms insulation test to earth.
The open collector device must comply with the
requirements for simple apparatus or have input
safety parameters equal to or greater than:
Ui > 10.5V dc
Ii > 9.2mA dc
Pi > 24mW
See section 6.6 for details of the typical maximum
counting frequency.
4.2.6 Magnetic pick-off input
CoiL in the input configuration menu is a low level
voltage pulse input intended for use with magnetic
pick-off sensors producing an ac output. For a CoiL
input the pulse input terminals 5 & 6 or 9 & 10 of the
BA364G Counter comply with the requirements of
simple apparatus allowing connection to any certified
intrinsically safe magnetic pick-off within the same
hazardous area as the Counter having output
parameters equal to or less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
The maximum permitted cable parameters will be
defined by the magnetic pick-off’s intrinsic safety
certificate less the Counters input parameters Ci & Li
which are small and can often be ignored.
See section 6.6 for details of the typical maximum
counting frequency.
4.2.7 Voltage pulse input
Two voltage pulse input ranges are selectable in the
configuration menu, VoLt5 L and VoLt5 H. When
configured for either of the voltage pulse ranges, the
pulse input terminals 5 & 6 or 9 & 10 of the BA364G
Counter comply with the requirements of simple
apparatus. This allows direct connection to any
intrinsically safe voltage source within the same
hazardous area as the Counter having output
parameters equal to or less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
The maximum permitted cable parameters will be
defined by the voltage source intrinsic safety
certificate less the BA364G Counter input
parameters which are small and can usually be
ignored.
See section 6.6 for details of the typical maximum
counting frequency.
4.2.8 Remote reset
The BA364G Counter’s total display may be
remotely reset by connecting terminals RS1 & RS2
together for more than one second. Permanent
interconnection inhibits totalisation. Remote
resetting may be accomplished by any mechanically
operated switch located in the same hazardous area
as the Counter providing it and the associated wiring
can withstand a 500V rms insulation test to earth.
No galvanic isolator is required.
A BA364G Counter may also be remotely reset to
zero from the safe area. Any switch may be used
but a galvanic isolator or IS relay is required to
transfer the contact closure into the hazardous area.
Almost any device with a contact that may be
connected to equipment in the hazardous area may
be used for this application. Fig 4 illustrates how a
BA364G Counter may be reset from both the safe
and the hazardous area.
Note: The BA364G can also be configured to reset
the total display when the &and *push buttons
are operated simultaneously for more than three
seconds - see 6.24.
13

5. INSTALLATION
5.1 Location
The BA364G Counter is housed in robust IP66 glass
reinforced polyester (GRP) enclosure incorporating
an armoured glass window and stainless steel
fittings making it suitable for exterior mounting in
most industrial on-shore and off-shore installations.
The Counter should be positioned where the display
is not in continuous direct sunlight. Special
conditions apply for Zone 0 installations, see section
3.3.
Field wiring terminals are located on the rear of the
Counter assembly as shown in Fig 7.
To ensure electrical continuity between the two
conduit or cable entries, the enclosure is fitted with a
bonding plate which includes an M4 earth stud.
This may be mounted on the inside or outside of the
enclosure. If the carbon loaded GRP enclosure is
not bolted to an earthed post or structure, this earth
stud should be connected to a local earth or the plant
potential equalising conductor.
An insulated M4 stud is provided in the bottom right
hand corner of the back-box for interconnecting
cable screens.
The BA364G Counter may be pipe mounted using a
BA393G pipe mounting kit, or panel mounted using a
BA394G or BA395G panel mounting kit.
5.2 Installation Procedure
Fig 6 illustrates the instrument installation procedure.
A. Remove the Counter assembly by unscrewing
the four captive 'A' screws.
B. Mount the enclosure back-box on a flat surface
and secure with screws or bolts through the
four 'B' holes. Alternatively use one of the pipe
or panel mounting kits which are available as
accessories.
C. Remove the temporary hole plug and install an
appropriate IP and temperature rated M20 x
1.5mm cable gland or conduit fitting. If two
entries are required, the supplied IP66
stopping plug should be replaced with an
appropriate IP and temperature rated M20 x
1.5mm cable gland or conduit fitting.
D. Connect the field wiring to the terminals as
shown in Fig 7. Replace the instrument
assembly on the back-box and evenly tighten
the four 'A' screws.
Fig 6 BA364G installation procedure
Fig 7 Dimensions and terminal connections
14

5.3 EMC
The BA364G complies with the requirements of the
European EMC Directive 2014/30/EU. For specified
immunity all wiring should be in screened twisted
pairs, with the screens earthed at one point in the
safe area.
5.4 Units of measurement and tag marking
on scale card.
The Counter's units of measurement and tag
information are shown on a scale card which slides
into the instrument.
New Counters are supplied with a printed scale card
showing the requested units of measurement and
tag information. If this information is not supplied
when the instrument is ordered, a blank scale card
will be fitted which can easily be marked on-site with
a dry transfer or a permanent marker. Custom
printed scale cards are available from BEKA
associates as an accessory.
To remove the scale card from a Counter carefully
pull the transparent tab at the rear of the instrument
assembly away from the assembly as shown
in Fig 8a.
Fig 8a Removing scale card
To replace the scale card carefully insert it into the
slot on the right hand side of the input terminals as
shown in Fig 8b. Force should be applied evenly to
both sides of the scale card to prevent it twisting.
The card should be inserted until about 2mm of the
transparent tab remains protruding.
Fig 8b Inserting scale card into the
instrument assembly.
15

6.0 CONFIGURATION & CALIBRATION
The BA364G Counter is configured and calibrated
via four front panel push buttons. All the
configuration functions are contained in an easy to
use intuitive menu that is shown diagrammatically in
Fig 10.
Each menu function is summarised in section 6.3 of
this manual and each summary includes a reference
to more detailed information.
The isolated pulse output, including configuration, is
described in section 7 of this manual. When factory
fitted optional alarms and the optional 4/20mA output
are included, additional functions appear in the
configuration menu which are described in section
10 of this manual.
All new BA364G Counters are supplied calibrated as
requested at the time of ordering. If calibration is not
requested, Counters will have default configuration
as shown in the following table, but can easily be re-
configured on-site.
Function Display Default
Input A inP .tYPE oP .CoL
Debounce dEbounCE dEFAuLt
Input b inP .tYPE oP .CoL
Debounce dEbounCE dEFAuLt
Counting edge A CntEdG-A EdGE 1
Counting edge b CntEdG-b EdGE 1
Update uPdAtE 0.5
Count Count A:b
Upper display di5p-1 totAL
Lower display di5P-2 on
Decimal point dP Rate 00000 .0
Tot al 00000000
Total scale factor 5CALE .t 001 .00
Rate scale factor 5CALE .r 001 .00
Timebase t-bA5E tb-01
Filter FiLter 24
Counter direction uP or dn uP
Clear value clr val 00000000
Local clear loc clr
Local total reset Clr tot oFF
Local grand total reset Clr Gtot oFF
Security code CodE 0000
Note: While the instrument is being configured
counting continues so that any input pulses
occurring during this time are recorded.
6.1 Calibration structure
Fig 9 shows the calibration structure of the BA364G
Counter. The two pulse inputs are processed by the
count function to produce a single output having the
selected arithmetic function, such as the sum of
pulse input A and pulse input b. This output is
passed to the 5cALE .Rand 5CALE . T functions
allowing the rate and total displays to have different
engineering units.
5CALE . t is a dividing factor that converts the output
from the Counter function into the required total
display in engineering units. e.g. if the output from
the Counter function is two pulses per pump stroke
and a total display of thousands of pump strokes is
required, 5CALE .tshould be set to 2000.
5CALE . r is a dividing factor that converts the output
from the Counter function into a rate display with the
required engineering units. e.g. if the output from the
Counter function is two pulses per pump stroke and
it is required to display the pump stroke rate, 5CALE . r
should be set to 2.
The timebase t-bA5E is a multiplying factor that
determines if the instrument displays rate per
second, per minute or per hour.
The BA364G uses ‘real’ decimal points. Moving the
position of a decimal point in a scale factor will affect
the instrument calibration.
Fig 9 Calibration structure
16

6.2 Accessing configuration functions
Throughout this manual the instrument front panel
push buttons are shown as &,*,(and )and
legends displayed by the instrument are shown in a
seven segment font as displayed by the Counter
e.g. FiLtEr and 5CALE .r.
Access to the configuration menu is obtained by
operating the (and )push buttons
simultaneously. If the instrument is not protected by
a security code the first parameter inPut-A will be
displayed. If a security code other than the default
code 0000 has already been entered, the instrument
will display CodE.Press(to clear this prompt and
enter the security code for the instrument using the
&or *push button to adjust the flashing digit, and
the (push button to transfer control to the next
digit. If the correct code has been entered pressing
)will cause the first parameter inPut-A to be
displayed. If an incorrect code is entered, or a push
button is not operated within ten seconds, the
instrument will automatically return to the display
mode.
All configuration functions and prompts are shown on
the upper eight digit display.
Once within the configuration menu the required
function can be selected by scrolling through the
menu using the &and *push buttons. The
configuration menu is shown diagrammatically in
Fig 10.
When returning to the display mode following
reconfiguration, the BA364G Counter will display
dAtA followed by 5AVE while the new information is
stored in permanent memory.
If after accessing the configuration menu the interval
between operating any front panel push button
exceeds one minute, the BA364G will automatically
return to the display mode and any configuration
changes will not be stored in permanent memory.
When making changes to multiple configuration
functions, it is therefore sensible to occasionally
return to the display mode to save the changes that
have already been made.
6.3 Summary of configuration functions
This section summarises all the configuration
functions. When read in conjunction with Fig 10 it
provides a quick aid for configuring the Counter. If
more detail is required, each summary contains a
reference to a full description of the function.
Display Summary of function
inPut-A Contains sub-menu with two
functions:
inP .tYPE Select Input type
dEbounCE Set debounce
See section 6.4
inP .tYPE [for Input-A]
Configures input-A to accept one of
six types of input:
oP .CoL Open collector *
VoLt5 L Voltage pulse <1 >3V
VoLt5 H Voltage pulse <3 >10V
CoiL Magnetic pick-off
Pr .dEt Proximity detector *
ContACt Switch contact *
*Link terminals 3 & 4
See section 6.5
dEbounCE [[[for Input-A]
Defines level of input debounce
applied to the pulse input A to
prevent false counting:
dEFAuLt
HEAVY
LiGHt
See section 6.6
inPut-b Contains sub-menu with two
functions:
inP .tYPE Select Input type
dEbounCE Set debounce
See section 6.7
inP .tYPE [for Input-b]
Configures input-b to accept one of
six types of input:
oP .CoL Open collector *
VoLt5 L Voltage pulse <1 >3V
VoLt5 H Voltage pulse <3 >10V
CoiL Magnetic pick-off
Pr .dEt Proximity detector *
ContACt Switch contact *
*Link terminals 7 & 8
See section 6.8
17

Display Summary of function
dEbounCE [for Input-b]
Defines level of input debounce
applied to the pulse input b to
prevent false counting:
dEFAuLt
HEAVY
LiGHt
See section 6.9
CntEdG-A Input A pulse counting edge
Defines whether the Counter is
incremented/decremented on the
leading or trailing edge of a pulse on
input A.
See section 6.10
CntEdG-b Input b pulse counting edge
Defines whether the Counter is
incremented/decremented on the
leading or trailing edge of a pulse on
input b.
See section 6.11
updAtE Display update interval
Defines the interval between display
updates between 0.5 and 5 seconds.
See section 6.12
Count Counting function
Defines the arithmetic relationship of
the two pulse inputs. The total
display can be derived from:
A:b Input A + Input b
A:-b Input A - Input b
A con b Input A controlled by
Input b.
a rel b Quadrature input
(for position display)
See section 6.13
di5P-1 Upper display
Defines whether rAtE or totAL is
shown on the upper display. The
other variable will be shown on the
lower display, providing the lower
display is on in function dI5P-2.
See section 6.14
Display Summary of function
di5P-2 Lower display
Turns the lower display, which
normally shows rate, on or oFF.
See section 6.15
dP Position of decimal points
Defines the position of the decimal
point in both the total and rate
displays.
See section 6.16
5CALE .tTotal Scale Factor
5CALE . t is a dividing factor that
converts the pulse output from
arithmetic Count function into the
required total display in engineering
units. 5CALE . t may be adjusted
between. 0.0001 and 99999. e.g. if
one pulse represents 1 centimetre of
dispensed cable and the total display
is required in metres, 5CALE .tshould
be set to 100.0 which is the number
of centimetres in a metre.
The total display is independent of
the rate display.
See section 6.17
5CALE .rRate scale factor
5CALE . r is a dividing factor that
converts the pulse output from the
arithmetic Count function into the
required rate display in engineering
units. 5CALE . r may be adjusted
between 0.0001 and 99999. e.g. if
one pulse represents 2 pump
strokes and the rate display is
required in pump strokes, 5CALE . r
should be set to 0.5.
The rate display is independent of
the total display.
See section 6.18
t-bA5E Timebase
Selectable multiplier allowing rate to
be displayed in units per second, per
minute or per hour.
Select:
tb-01 for rate / second
tb-60 for rate / minute
tb-3600 for rate / hour
See section 6.19
18

Display Summary of function
FiLtEr Display filter
Is an adjustable digital filter to
reduce the noise on the rate display.
The filter has two parameters each
represented by a digit adjustable
between 0 and 9. The first digit
defines the amount of filtering
applied to the display, the second
digit the deviation from the displayed
rate at which the filter will be
overridden and the rate display will
move rapidly to the new value.
See section 6.20
up or dn Direction of count
Determines whether pulses at inputs
A and b increment or decrement the
total display.
See section 6.21
CLr VAL Reset value
Defines a preset number to which
the total display will be set when the
BA364G Counter is locally or
remotely reset. Enables the
instrument to count down from a
preset number.
See section 6.22
LoC CLr Local clear
Contains sub-menu with two
functions enabling the total and the
grand total to be reset via the front
panel push buttons while the
Counter is in the display mode.
See section 6.23
Clr tot
When on is selected total display is
reset when &and *buttons are
operated simultaneously for more
than 3 seconds in the display mode.
See section 6.24
Clr Gtot
When on is selected the grand total
may be reset when )and *
buttons are operated simultaneously
for more than 10 seconds in the
display mode - see section 2.2 for
details.
Note: Once reset, the grand total
can not be restored.
See section 6.25
Display Summary of function
Clr Gtot Resets grand total to zero from
within configuration menu.
This function resets the grand total
to zero from within the configuration
menu when CLr YE5 is selected.
Note: Once reset, the grand total
can not be recovered.
See section 6.26
CodE Access code
Defines a four digit alphanumeric
code that must be entered to gain
access to the configuration menu.
Default code 0000 disables the
security function and allows
unrestricted access to all
configuration functions.
See section 6.27
r5Et dEF Reset to factory defaults
Returns the BA364G Counter to the
factory defaults shown in section 6.0
To prevent accidental use the
request must be confirmed by
entering 5urE before the reset will be
executed.
See section 6.28
19

20