BEKA BA367E-SS User manual

Issue: 6
9th July 2019
BA367E-SS
Rugged one input
Intrinsically safe
Counter
Issue 6

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 input
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 input
4.2.6 Magnetic pick-off input
4.2.7 Voltage pulse input
4.2.8 Remote reset
4.3 Use in Ex e or Ex p panel enclosure
located in Zones 1 or 2.
4.3.1 Installation in Ex e panel enclosure
4.3.2 Installation in Ex p panel enclosure
5. Installation
5.1 Location
5.2 Installation procedure
5.3 EMC
5.4 Counter earthing
5.5 Scale card
6. Configuration and Calibration
6.1 Configuration structure
6.2 Accessing the configuration functions
6.3 Summary of configuration functions
6.4 Input: inPut
6.5 Input type: inP.tYPE
6.6 Input debounce: dEbouncE
6.7 Input pulse counting edge: Cnt EdgE
6.8 Display update interval: uPdAtE
6.9 Upper display: di5P-1
6.10 Lower display: di5P-2
6.11 Position of the decimal points: dP
6.12 Total scale factor: 5CALE .t
6.13 Rate scale factor: 5CALE .r
6.14 Timebase: t-bA5E
6.15 Display filter: FiLtEr
6.16 Direction of count: uP or dn
6.17 Reset value: CLr VAL
6.18 Local reset: LoC CLr
6.19 Local total reset: Clr tot
6.20 Local grand total reset: Clr Gtot
6.21 Reset grand total from configuration
menu: Clr Gtot
6.22 Security code: CodE
6.23 Reset configuration to factory defaults:
r5Et dEF
6.24 Display overflow
7. Configuration example
8. Maintenance
8.1 Fault finding during commissioning
8.2 Fault finding after commissioning
8.3 Servicing
8.4 Routine maintenance
8.5 Guarantee
8.6 Customer comments
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CONTENTS
The BA367E-SS is CE marked to show compliance with the European Explosive Atmospheres Directive
2014/34/EU and the European EMC Directive 2014/30/EU

9. Accessories
9.1 Scale card
9.2 Tag information
9.3 Alarms
9.3.1 Solid state output
9.3.2 Intrinsic safety
9.3.3 Configuration summary
9.3.4 Alarm enable: EnbL
9.3.5 Type of alarm: tYPE
9.3.6 Setpoint adjustment:
5P1x & 5P2x
9.3.7 Alarm function: Hi.Lo
9.3.8 Alarm output status: no .nC
9.3.9 Hysteresis: H5tr
9.3.10 Alarm delay: dELA
9.3.11 Alarm silence time: 5IL
9.3.12 Flash display when alarm occurs:
FL5H
9.3.13 Access Setpoint: AC5P
9.3.14 Adjusting alarm setpoints from
display mode.
9.4 Pulse Output
9.4.1 Intrinsic safety
9.4.2 System design
9.4.3 Configuration
9.4.4 Access Pulse output sub-menu:
PuL5E oP
9.4.5 Enable pulse output: EnbL
9.4.6 Source of pulse output: 5ourCE
9.4.7 Divide output pulse frequency:
diVidE
9.4.8 Output pulse width: durAtion
9.5 4/20mA output
9.5.1 Intrinsic safety
9.5.2 System design
9.5.3 Configuration
9.5.4 Access 4/20mA output
sub-menu: 4-20 oP
9.5.5 Enable 4/20mA output: EnbL
9.5.6 Select rate or total source:
4-20tYPE
9.5.7 Display corresponding to
4mA output: 4.000
9.5.8 Display corresponding to
20mA output: 20 .000
9.6 Display backlight
Appendix 1 Dust certification
Appendix 2 IECEx certification
Appendix 3 ETL and cETL certification
3
CONTENTS CONTINUED

4

1. DESCRIPTION
This rugged intrinsically safe, one input Counter may
be configured to count input pulses from a wide
variety of sensors and to display the total number in
engineering units. A smaller five digit display may be
activated to show the input pulse rate in engineering
units per second, minute or per hour.
This instruction manual supplements the abbreviated
instruction sheet supplied with each instrument.
The BA367E-SS has been certified intrinsically safe
for use in gas and dust hazardous areas by Notified
Body Intertek Testing and Certification Ltd and
complies with the European ATEX Directive 2014/34/
EU. It has a rugged stainless steel enclosure and an
impact resistant glass window. In addition to normal
intrinsically safe applications, the certification allows
it to be installed in an Ex e, Ex n, Ex p or Ex t panel
enclosure without invalidating the enclosure's
certification.
For international applications the BA367E-SS also
has IECEx certification which is described in
Appendix 2.
For US and Canadian applications the BA367E-SS
has ETL and cETL, see Appendix 3.
2. OPERATION
Fig 1 shows a simplified block diagram of the
BA367E-SS Counter. The instrument can be
supplied with a factory fitted internally powered
display backlight, plus one of the following three
factory fitted accessories:
Dual isolated alarms
or Isolated pulse output
or Isolated 4/20mA output
Fig 1 BA367E-SS block diagram
5

2.1 Initialisation
Each time power is applied to a BA367E-SS 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
to zero, new pulses will be added to the
existing totals.
2.2 Controls
The BA367E-SS 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
( + )Access to configuration menu
& + *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 6.19
) + &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 6.20
(+ &Shows firmware version
Note: When optional alarms are fitted, the
BA367E-SS Counter may be configured to provide
direct access to the alarm setpoints from the display
mode when the (and * buttons are operated
simultaneously. See 9.3.13 and 9.3.14
2.3 Displays
The BA367E-SS Counter has two digital displays
and associated annunciators, plus a pulse input
indicator as shown on the front page of this manual.
Total Shows the total pulse count on the
display upper eight digit display. May be
reset to zero 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 corner
indicator 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.
6

3. INTRINSIC SAFETY CERTIFICATION
The BA367E-SS Counter has ATEX and IECEx 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 BA367E-SS with an EC-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 BA367E-SS Counter has been certified
Ex ia IIC T5 Ga. 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 to +60oC When installed as an
intrinsically safe Ex i
instrument in an Ex e, Ex n,
Ex p or Ex t enclosure.
-40 to +70oC When used as an intrinsically
safe Ex i instrument not in
an Ex e, Ex n, Ex p or Ex t
enclosure.
3.3 Special conditions for safe use
The ATEX intrinsic safety certificate number has an
‘X’ suffix indicating that for some applications special
conditions apply for safe use.
When installed in an Ex e, Ex n, Ex p or Ex t
panel enclosure all connections to the
BA367E-SS must be made by appropriately
rated Zener barriers or galvanic isolators.
This means that when installed in an Ex e, Ex n,
Ex p or Ex t panel enclosure the BA367E-SS
remains an intrinsically safe instrument and must
comply with the installation requirements shown in
this manual.
The certificate also states:
The front of the stainless steel enclosure
complies with the requirements for Ex e, Ex n
Ex p & Ex t type of protection.
Therefore when correctly installed the BA367E-SS
Counter will not invalidate the Ex e, Ex n, Ex p or
Ex t panel enclosure certification.
Note: At temperatures below -20°C the instrument
will continue to function, but the display response will
become slower and the contrast will be reduced.
7

3.4 Power supply
When installed in a hazardous area the BA367E-SS
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 BA367E-SS Counter.
3.5 Pulse input terminals
The BA367E-SS pulse input is a separate
intrinsically safe circuit with the negative terminal
internally connected to the negative side of the
power supply terminal 2 and to the reset terminal
RS2. See Fig 1.
Some types of sensor that may be connected to the
BA367E-SS input, 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 BA367E-SS connects an internal 7V,
6mA supply to the input. Energising is not required
when the BA367E-SS input is connected to a
voltage source.
Fitting a link changes the output safety parameters
of the BA367E-SS Counter pulse input as shown in
the following table which also shows which types of
sensor require energising (link fitting).
Safety parameters
Type of input Link 3 & 4 Uo Io Po
Switch contact Yes 10.5V 8.2mA 25mW
Proximity detector Yes 10.5V 8.2mA 25mW
Open collector Yes 10.5V 8.2mA 25mW
Magnetic pick-off No 1V 11µA 3µW
Voltage input (low) No 1V 11µA 3µW
Voltage input (high) No 1V 11µA 3µW
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), which allows them to be ignored and
not documented when assessing an intrinsic safe
system.
When terminals 3 & 4 are not linked, the BA367E-SS
Counter input terminals comply with the
requirements for simple apparatus, thus allowing the
output parameters to be ignored when assessing the
safety of the sensor connected to the input.
This allows almost any certified intrinsically safe
voltage pulse circuit or certified magnetic pick-off to
be directly connected to the BA367E-SS Counter
input providing that:
a. The output parameters of the sensor or circuit
are equal to or less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
b. The sensor and associated wiring can
withstand a 500V rms insulation test to earth.
The BA367E-SS EC-Type Examination
Certificate specifies that the equivalent
capacitance and inductance of the
BA367E-SS Counter input is:
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 or
circuit connected to the input terminals of the
Counter. These input parameters are very
small and are therefore unlikely to make any
significant difference to the allowable cable
parameters.
c. The sensor is located in the same hazardous
area as the BA367E-SS.
8

3.5.2 sensors that require energising
Switch contacts, proximity detector or open collector
inputs require energising which is achieved by
linking Counter terminals 3 and 4 together as
described in section 3.5. When energised, the
output parameters of the pulse input terminals 5 and
6 are:
Uo = 10.5V dc
Io = 9.2mA dc
Po = 24mW
These output parameters do not comply with the
requirements for simple apparatus and should be
considered when assessing the safety of the sensor
connected to the totaliser pulse input.
Any certified intrinsically safe sensor may be
connected to a BA367E-SS energised input
providing that:
a. The sensor is a certified intrinsically safe device
having input parameters equal to or greater
than:
Ui 10.5V dc
Ii 9.2mA dc
Pi 24mW
or complies with the requirements for
simple apparatus.
b. The sensor and associated wiring can
withstand a 500V rms insulation test to earth.
c. The sensor is located in the same hazardous
area as the BA367E-SS.
d. Minimum operating voltage of a sensor
incorporating a NAMUR compliant proximity
detector is less than 7.5V.
3.6 Remote reset terminals
The BA367E-SS Counter may be reset to zero or to
the reset value 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 dc
Io = 1.6mA dc
Po = 2.0mW
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 Counter's total display may be reset from within
the hazardous area by any mechanically operated
switch 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
diode return Zener barrier is not suitable for this
application.
Alternatively, the BA367E-SS Counter may be
configured so that the total display is reset to zero
when the &and *push buttons are operated
simultaneously for more than two seconds.
See 6.19.
3.7 Certification label information
The certification information label is fitted in a recess
on the top outer surface of the enclosure. It shows
the ATEX and IECEx certification information plus
BEKA associates name and location and the
instrument serial number. Non European certification
information may also be included.
BA367E-SS Certification information label
9

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 BA367E-SS Counter.
Terminals 2, 6 and RS2 of the BA367E-SS Counter
are internally connected together. If any of these
terminals are earthed, as shown in Figs 2 & 3, the
other common terminals should only be connected
to the same earth, i.e. the barrier busbar, or to
circuits that have 500V insulation to earth.
Any certified Zener barrier may be used with the
BA367E-SS Counter providing it's output parameters
do not exceed the input parameters of the terminals
to which it is connected. Only one polarity of Zener
barrier i.e. positive or negative, may be used in a
Counter system.
Fig 2 illustrates the basic circuit that is used for all
BA367E-SS Counter installations protected by Zener
barriers. For simplicity, connections for the optional
alarms, pulse output and 4/20mA output are shown
separately in section 9 this manual.
Fig 2 BA367E-SS used with Zener barriers
Alternatively the pulse input source 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 and RS2 are
interconnected within the BA367E-SS see Fig 1.
Fig 3 BA367E-SS used with Zener barriers
pulse source in safe area.
4.1.1 Power supply
The BA367E-SS Counter requires a minimum of 10V
between terminal 1 & 2 and consumes:
10mA without optional backlight
plus 22mA for optional backlight
plus 6mA when terminals 3 & 4 are linked
Any certified Zener barrier may be used to power a
BA367E-SS 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
BA367E-SS 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 the counter input energised,
must be between 15.5V 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.
10

4.1.2 Pulse input
As shown in Fig 2 the BA367E-SS 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 the input if
the intrinsically safe pulse source is located within
the same hazardous area as the BA367E-SS
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 BA367E-SS
Counter may be directly connected to pulse input
terminals 5 & 6 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 BA367E-SS
contains a configurable debounce circuit to prevent
contact bounce being counted.
See section 6.6 for details of the 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 BA367E-SS
Counter input, 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 ≥8.2mA dc
Pi ≥25mW
and the minimum operating voltage of the proximity
detector is less than 7.5V.
See section 6.6 for details of the maximum counting
frequency.
4.1.5 Open collector input
Most open collector sensors located in the same
hazardous area as the BA367E-SS Counter may be
directly connected to pulse input terminals 5 & 6
providing the sensor and associated wiring can
withstand a 500V rms insulation test to earth.
See section 6.6 for details of the 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 with no link between terminals 3 and 4, the
BA367E-SS pulse input terminals 5 & 6 comply with
the requirements of simple apparatus. This allows
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 & Li
which are small and can often be ignored.
See section 6.6 for details of the 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,
with no link between terminals 3 and 4, the
BA367E-SS pulse input terminals 5 & 6 comply with
the requirements of simple apparatus. This allows
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
determined by Co and Lo of the intrinsic safe voltage
source less Ci and Li of the BA367E-SS Counter.
See section 6.6 for details of the maximum counting
frequency.
11

4.1.8 Remote reset
The BA367E-SS Counter's 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 BA367E-SS 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 BA367E-SS
may be reset from both the safe and the hazardous
area.
Note: The BA367E-SS can be configured to reset
the total display when the &and *push buttons
are operated simultaneously for more than two
seconds - see 6.19.
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 BA367E-SS
having the correct function may be used.
Fig 4 BA367E-SS protected by galvanic isolators.
Fig 4 illustrates the basic circuit that is used for all
BA367E-SS Counter installations protected by
galvanic isolators. For simplicity, connections for
the optional alarms, pulse output and 4/20mA output
are shown separately in section 9 of this manual.
Fig 5 BA367E-SS protected by galvanic isolators.
pulse source in safe area.
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 BA367E-
SS Counter in the hazardous area, although it may
be difficult to find isolators for some sensors.
4.2.1 Power supply
The BA367E-SS Counter requires a minimum of 10V
between terminal 1 & 2 and consumes:
10mA without optional backlight
plus 22mA for optional backlight
plus 6mA when terminals 3 & 4 are linked
Any certified galvanic isolator may be used to power
a BA367E-SS Counter providing the output safety
parameters of the isolator are equal to or less than
the input safety parameters of terminals 1 & 2.
These requirements are not restrictive and allow a
wide range of galvanic isolators, such as solenoid
drivers, to be used.
12

4.2.2 Pulse input
As shown in Fig 4 the BA367E-SS 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 BA367E-SS
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 BA367E-SS
Counter may be directly connected to pulse input
terminals 5 & 6 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 BA367E-SS
contains a configurable debounce circuit to prevent
contact bounce being counted.
See section 6.6 for details of the 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 BA367E-SS
Counter input, 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 ≥8.2mA dc
Pi ≥25mW
and the minimum operating voltage of the proximity
detector is less than 7.5V.
See section 6.6 for details of the maximum counting
frequency.
4.2.5 Open collector input
Most open collector sensors located in the same
hazardous area as the BA367E-SS Counter may be
directly connected to the pulse input terminals 5 & 6
providing the sensor and associated wiring can
withstand a 500V rms insulation test to earth. This
includes most sensor optoisolators.
See section 6.6 for details of the 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 of the
BA367E-SS 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 & Li
which are small and can usually be ignored,
See section 6.6 for details of the 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 of the BA367E-SS
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 BA367E-SS Counter input
parameters which are small and can usually be
ignored. See section 6.6 for details of the maximum
counting frequency.
13

4.2.8 Remote reset
The BA367E-SS Counter may be remotely reset 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 galvanic
isolator is required.
A BA367E-SS Counter may also be remotely reset
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 BA367E-SS
Counter may be reset from both the safe and the
hazardous area.
Note: The BA367E-SS can be configured to reset
the total display when the &and *push buttons
are operated simultaneously for more than two
seconds - see 6.19.
4.3 Use in an Ex e or Ex p panel enclosure
located in Zone 1 or Zone 2.
The BA367E-SS ATEX EC-Type Examination
Certificate allows the Counter to be installed in an
Ex e IIC Gb increased safety panel enclosure
located in Zone 1 or 2, or in an Ex p IIC Gb
pressurised panel enclosure located in a Zone 1 or 2
hazardous area. The BA367E-SS may also be
installed in an Ex n enclosure located in Zone 2.
When installed in a certified panel enclosure the
BA367E-SS Counter remains intrinsically safe and
must be protected by a Zener barrier or galvanic
isolator as described in sections 4.1 and 4.2.
However when correctly installed, the Counter does
not invalidate the certification of the Ex e, Ex n or
Ex p panel enclosure allowing installation with higher
power control equipment.
4.3.1 Installation in an Ex e panel enclosure
Installation of a BA367E-SS Counter in an
Ex e IIC Gb increased safety panel enclosure does
not invalidate the Ex e panel's ingress and impact
protection as the front of the BA367E-SS complies
with Ex e impact and ingress requirements.
Although mounted in an Ex e panel enclosure, the
BA367E-SS remains Group II Category
1G Ex ia IIC T5 Ga intrinsically safe apparatus and
must therefore be powered via a Zener barrier or
galvanic isolator as described in section 4.1 and 4.2
of this manual.
Fig 6 Typical installation in Ex e panel enclosure
14

Some Zener barriers and galvanic isolators are
certified for mounting within a protective enclosure
located in Zone 2 which may permit them to be
mounted in the same Ex e enclosure as the
BA367E-SS Counter. Zener barriers and galvanic
isolators are not permitted in Ex e enclosures
located in Zone 1.
The Counter terminals, the wiring to the Counter and
the intrinsically safe interface, if mounted within the
enclosure, should be segregated from all other non-
intrinsically safe wiring and equipment within the
panel enclosure as required by EN 60079-11
Equipment protected by intrinsic safety and EN
60079-14 Electrical installations design, selection
and erection.
The Ex e panel enclosure should be fitted with a
warning label saying 'Do not open when non-
intrinsically safe circuits are energised', alternatively
all bare live non-intrinsically safe parts within the
panel enclosure should have an IP30 cover carrying
a warning label 'Do not open when energised'.
The power dissipation within an BA367E-SS fitted
with operational alarms and a backlight is normally
about 350mW. In the very unlikely event that all
three circuits fail to the worst case condition at the
same time, the total power dissipation rises to 2.5W
which could raise the internal temperature of a small
thermally well insulated panel enclosure.
4.3.2 Installation in Ex p panel enclosure within
Installation of a BA367E-SS Counter in an
Ex p IIC Gb or Ex p IIC Gc pressurised panel
enclosure does not invalidate the Ex p panel's
impact and ingress protection as the front of the
Counter complies with Ex p impact and ingress
requirements. Although mounted in an Ex p panel
enclosure, the BA367E-SS remains Group II
Category 1G Ex ia IIC T5 Ga intrinsically safe
apparatus and must therefore be powered via a
Zener barrier or galvanic isolator as described in
section 4.1 and 4.2 of this manual to ensure that the
instrument's front panel push button switches are
nonincendive.
When installed in an Ex p panel enclosure the four
vents at the rear of the Counter which are shown in
Fig 8 should not be obstructed.
Zener barriers and galvanic isolators may be
installed in the same Exp enclosure as the
BA367E-SS. All may be mounted in an Ex px
enclosure installed in Zones 1 or 2, or in an Ex pz
enclosure installed in Zone 2, both of which have a
non-hazardous interior. Some Zener barriers and
galvanic isolators may have certification permitting
installation within an Ex py enclosure which has a
Zone 2 interior.
The Counter's terminals, the wiring to the Counter
and the intrinsically safe interface, if mounted within
the enclosure, should be segregated from all other
non-intrinsically safe wiring and equipment within the
panel enclosure as required by EN 60079-11
Equipment protected by intrinsic safety and EN
60079-14 Electrical installations design, selection
and erection.
If live maintenance is anticipated, it is recommended
that the Ex p panel enclosure should be fitted with a
warning label saying 'Do not open when non-
intrinsically safe circuits are energised', alternatively
all bare live non-intrinsically safe parts within the
panel enclosure should have an IP30 cover carrying
a warning label 'Do not open when energised'.
Fig 7 Typical installation in Ex p panel enclosure
15

5. INSTALLATION
5.1 Location
The BA367E-SS has a stainless steel case with a
10mm thick toughened glass window. The case
provides 7J and the window 4J front of panel impact
protection. The captive silicone gasket, which seals
the joint between the instrument and the panel
enclosure, ensures IP66 front of panel ingress
protection. The rear of the Counter has IP20
protection.
Although the front of the BA367E-SS has IP66
protection, it should be shielded from continuous
direct sunlight and severe weather conditions.
The BA367E-SS may be located in Zone 0, 1 or 2
providing that the operating temperature is between
–40°C and +60°C and the installation complies with
the certification requirements.
Installation in Ex e and Ex p panel enclosures are
described in sections 4.3.1 and 4.3.2.
Fig 8 show the overall dimensions of the
BA367E-SS together with the recommended panel
enclosure cut-out dimensions and terminal locations.
5.2 Installation Procedure
a. Cut the aperture specified in Fig 8 in the panel
enclosure. Ensure that the edges of aperture are
de-burred.
b. Inspect the Counter's captive gasket and ensure
that it is not damaged before inserting the
Counter into the panel enclosure aperture.
c. If the enclosure panel is less than 1.0mm thick, or
is non-metallic, an optional BEKA stainless steel
support plate should be slid over the rear of the
Counter before the panel clamps are fitted to
evenly distribute the clamping force and prevent
the enclosure panel being distorted or creeping.
d. Slide a panel clamp into the two grooves at each
corner of the indicator housing with the M3 stud
protruding through the hole at the rear of the
clamp. Fit the stainless steel spring washer over
the stud and secure with the stainless steel wing
nut.
e. Evenly tighten the four clamps to secure the
instrument. The recommended minimum
tightening torque for each wing nut is 22cNm
(1.95 lbf in).
f. Connect the panel enclosure wiring to the rear
terminal blocks. To simplify installation, the
terminals are removable so that wiring can be
completed before the instrument is installed.
Cables should be mechanically secured to
ensure terminals are not damaged by vibration.
g. Finally, fit a silicone rubber push-on cap to the
end of each M3 threaded rod.
Support panel wiring to prevent vibration damage
Note: Optional backlight is internally powered
Fig 8 Dimensions and terminals
16

Fig 9 Installation procedure
5.3 EMC
The BA367E-SS 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
within the safe area.
Fig 10 Terminals for field wiring
5.4 Counter earthing
The BA367E-SS has an M4 earth stud on the rear
panel which should be electrically connected to the
panel enclosure in which the instrument is mounted,
or to the plant equipotential conductor.
5.5 Scale card
The Counter’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 11. Thus the scale
card can easily be changed without removing the
Counter from the panel or opening the instrument
enclosure.
New Counters are supplied with a printed scale card
showing the requested units of measurement, if this
information is not supplied when the instrument is
ordered a blank card will be fitted.
A pack of self-adhesive scale cards printed with
common units of flow measurement is available as
an accessory from BEKA associates. Custom
printed scale cards can also be supplied.
To change a scale card, unclip the tapered end of
the flexible strip at the rear of the instrument 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 Counter,
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 11 Inserting flexible strip carrying scale card into
slot at the rear of the Tachometer.
17

6.0 CONFIGURATION & CALIBRATION
The BA367E-SS 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 13.
Each menu function is summarised in section 6.3 of
this manual and each summary includes a reference
to more detailed information.
When factory fitted optional dual alarms, pulse
output or a 4/20mA output are included, additional
functions appear in the configuration menu which
are described separately in section 9.
All new BA367E-SS 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
Input type inP .tYPE oP .CoL
Debounce dEbounCE dEFAuLt
Counting edge Cnt EdGE EdGE 1
Update uPdAtE 0.5
Upper display di5p-1 totAL
Lower display di5P-2 on
Decimal point dP Rate 00000 .0
Total 00000000
Total scale factor 5CALE .t001.00
Rate scale factor 5CALE .r001.00
Timebase t-bA5E tb-01
Filter FiLter 24
Counter direction uP or dn uP
Clear value clr val 00000000
Local clear
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 Configuration structure
Fig 12 shows the configuration structure of the
BA367E-SS Counter. The pulse input is passed to
the 5CALE.r and 5CALE.t functions allowing the
independent rate and total displays to have different
engineering units.
5CALE.t is a dividing factor that converts the input
pulses into the required total display in engineering
units. e.g. if the input is two pulses per pump stroke
and it is required to display the total number of pump
strokes in thousands of strokes, 5CALE.t should be
set to 2000.
5CALE.r is a dividing factor that converts the input
pulses into a rate display with the required
engineering units. e.g. if the input is two pulses per
pump stroke and it is required to display the pump
stroke rate, 5CALE.r should be set to 2.0.
The timebase t-bA5E is a multiplying factor that
determines if the instrument displays pulse rate per
second, per minute or per hour.
The BA367E-SS uses ‘real’ decimal points. Moving
the position of a decimal point in a scale factor will
affect the instrument calibration.
Fig 12 Calibration structure
18

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 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 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 13.
When returning to the display mode following
reconfiguration, the BA367E-SS 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 BA367E-SS 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 13 it
provides a quick aid for configuring the Counter. If
more detail is required, each section contains a
reference to a full description of the function.
Display Summary of function
inPut Contains sub-menu with two
functions:
inP .tYPE Select Input type
dEbounCE Set debounce
See section 6.4
inP .tYPE
Configures input 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 [[
Defines level of input debounce
applied to the pulse input to prevent
false counting:
dEFAuLt
HEAVY
LiGHt
See section 6.6
Cnt EdGE Input pulse counting edge
Defines whether the Counter is
incremented/decremented on the
leading or trailing edge of an input
pulse.
See section 6.7
updAtE Display update interval
Defines the interval between display
updates between 0.5 and 5
seconds.
See section 6.8
19

Display Summary of function
di5P-1 Upper display
Defines whether rAtE or totAL are
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 6.9
di5P-2 Lower display
Turns the lower display, which
normally shows rate, on or oFF.
See section 6.10
dP Position of decimal points
Defines the position of the decimal
point in both the total and rate
displays.
See section 6.11
5CALE .tTotal Scale Factor
5CALE .T is a dividing factor that
converts the number of input pulses
into the required total display in
engineering units. 5CALE .tmay be
adjusted between 0.0001 & 99999.
e.g. if one input 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 6.12
5CALE .rRate scale factor
5CALE .ris a dividing factor that
converts the input pulse rate into the
required rate display in engineering
units. 5CALE .rmay 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 2.0.
The rate display is independent of
the total display.
See section 6.13
Display Summary of function
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 6.14
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 6.15
uP or dn Direction of count
Determines whether input pulses
increment or decrement the total
display.
See section 6.16
CLr VAL Reset value
Defines a preset number to which
the total display will be set when the
BA367E-SS Counter is locally or
remotely reset. Enables the
instrument to count down from a
preset number.
See section 6.17
20