BEKA BA337E-SS User manual

Issue: 6
9th July 2019
BA337E-SS
Rugged one input
Intrinsically safe
pulse input
Rate Totaliser
Issue 6

1. Description
2. Operation
2.1 Initialisation
2.2 Controls
2.3 Displays
2.3.1 Display over-range
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
3.5.1 Flowmeters that don't require
energising.
3.5.2 Flowmeters that 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 Open collector input
4.1.5 2-wire proximity detector 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 Open collector input
4.2.5 2-wire proximity detector 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 Rate Totaliser earthing
5.5 Scale Card
6. Configuration and Calibration
6.1 Configuration structure
6.2 Accessing configuration functions
6.3 Summary of configuration functions
6.4 Rate totaliser function: function
6.5 Input: input
6.6 Input type: inp .type
6.7 Debounce: debounce
6.8 Display update interval: update
6.9 Upper display: di5p-1
6.10 Lower display: di5p-2
6.11 Position of decimal points: dp
6.12 Flowmeter K-factor: factor
6.13 Total scale factor: 5cale .t
6.14 Rate scale factor: 5cale .r
6.15 Timebase: t-ba5e
6.16 Display filter: filter
6.17 Clip-off: clp off
6.18 Local reset: loc clr
6.19 Local total reset: clr tot
6.20 Local grand total reset: clr gtot
6.21 Grand total reset from configuration
menu: clr gtot
6.22 Define security code: code
6.23 Reset to factory defaults: r5et def
7. Lineariser
7.1 Flowmeter specification
7.2 Summary of lineariser configuration
functions.
7.3 Add a segment: add
7.4 Remove a segment: del
7.5 Input frequency: pul5efre
7.6 Flowmeter K-factors: l-factor
7.7 Lineariser error messages
8. Configuration example
8.1 Configuration procedure
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
222222222222222222
The BA337E-SS is CE marked to show compliance with the European Explosive Atmospheres Directive
2014/34/EU and the European EMC Directive 2014/30/EU
CONTENTS

10. Accessories
10.1 Scale card
10.2 Tag information
10.3 Backlight
10.4 Alarms
10.4.1 Solid state output
10.4.2 Intrinsic safety
10.4.3 Summary of alarm configuration
functions.
10.4.4 Alarm enable: enbl
10.4.5 Type of alarm: type
10.4.6 Setpoint adjustment: 5p1x and 5p2x
10.4.7 Alarm function: hi.lo
10.4.8 Alarm output status: no.nc
10.4.9 Hysteresis: h5tr
10.4.10 Alarm delay: dela
10.4.11 Alarm silence time: 5il
10.4.12 Flash display when alarm occurs:
fl5h
10.4.13 Access setpoint: ac5p
10.4.14 Adjusting alarm setpoints
from totalisation mode
10.5 Pulse Output
10.5.1 Intrinsic safety
10.5.2 System design
10.5.3 Configuration
10.5.4 Pulse output: pul5e op
10.5.5 Enable pulse output: enbl
10.5.6 Source of pulse output: 5ource
10.5.7 Define output pulse frequency:
divide
10.5.8 Define output pulse width:
duration
10.5.9 Pulse storage
10.6 4/20mA output
10.6.1 Intrinsic safety
10.6.2 System design
10.6.3 Configuration
10.6.4 Access 4/20mA output: 4-20op
10.6.5 Enable 4/20mA output: Enbl
10.6.6 Select rate or total source: 4-20type
10.6.7 Display for 4mA output: 4.000
10.6.8 Display for 20mA output: 20 .000
Appendix 1 Dust certification
Appendix 2 IECEx certification
Appendix 3 ETL & cETL certification
3
CONTENTS CONTINUED

4

1. DESCRIPTION
This rugged intrinsically safe, one input rate totaliser is
primarily intended for use with a pulse output
flowmeter. The instrument simultaneously displays
the rate of flow and the total flow in the same or
different engineering units on two separate displays.
It is controlled and configured via the four front panel
push buttons, a user defined four digit code may be
entered to prevent accidental access to the
instrument's configuration menu.
This instruction manual supplements the abbreviated
instruction sheet supplied with each instrument.
The BA337E-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 BA337E-SS has
IECEx certification which is described in Appendix 2.
For applications in the USA & Canada the BA337E-SS
has ETL and cETL certification which is described in
Appendix 3.
2. OPERATION
Fig 1 shows a simplified block diagram of the
BA337E-SS Rate Totaliser. The instrument can
accept pulses from most types of flowmeter sensor.
When connected to a pulse output flowmeter the
BA337E-SS will provide an accurate display of the
rate of flow and the total flow in the same or different
engineering units. The internal lineariser, which can
have up to sixteen straight-line segments, may be
calibrated to compensate for flowmeter non-linearity.
The BA337E-SS has a single pair of input terminals
for connection to all types of flowmeter sensors. When
counting pulses from a sensor requiring energising,
such as a switch contact, open collector or a two wire
proximity detector, an external link between terminals
3 and 4 supplies power to the sensor input terminals.
Factory fitted optional accessories are shown below:
Backlight
Isolated dual alarms
or
Isolated 4/20mA output
or
Isolated pulse output
Only one output option may be fitted
Fig 1 BA337E-SS
2.1 Initialisation
Each time power is applied to the Rate Totaliser
initialisation is performed. After a short delay the
following display sequence occurs:
All segments of the display are activated
Instrument starts functioning using the
configuration information stored in permanent
memory. Unless total and grand total
displays have been reset to zero, new flow will
be added to the existing totals.
5

2.2 Controls
The BA337E-SS is controlled and configured via four
front panel push buttons. In the totalisation mode i.e.
when the instrument is displaying rate and total flow
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 )+ *
buttons 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
&+ * If Local Total Reset CLr tot in the
instrument configuration menu has been
activated, operating the &+ *buttons
for three seconds will reset the total
display to zero and clear any pulses
stored in the optional pulse output.
The Grand Total is not reset.
See 6.19
(+ &Shows in succession, firmware version
number, instrument function totali5e
and any output accessories that are
fitted:
- A Dual Control Outputs
- P Pulse output
- C 4/20mA output
( + *Provides direct access to the alarm
setpoints when the Rate Totaliser is fitted
with optional alarms and the AC5P
setpoints function has been enabled.
See 10.4.13
(+ )Access to configuration menu
2.3 Displays
The BA337E-SS has two digital displays and
associated annunciators, plus a flow indicator as
shown on front cover of this manual.
Total Shows the total flow 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 flow rate on the
Display lower six
digit display.
Flow This disc in the lower left
indicator hand corner of the display
'rotates' for two seconds each
time an input pulse is received.
Appears to rotate continuously
when input frequency exceeds
0.5Hz.
Hold Activated when input
annunciator frequency is below the clip-off
threshold.
Reset Activated while instrument is
annunciator 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.
2.3.1 Display over-range
Over-range of the upper eight digit display or the
lower six digit display is indicated by all the digits
displaying 9and all the decimal points flashing.
6

3. INTRINSIC SAFETY CERTIFICATION
The BA337E-SS rate totaliser 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 BA337E-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 Rate Totaliser carries
the European 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 complying
with EN60079-14 Electrical Installation 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 BA337E-SS Rate Totaliser 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.
In gases that may be used with equipment having a
temperature classification of:
Group A propane
Group B ethylene
Group C hydrogen
Having a temperature classification of:
T1 450ºC
T2 300ºC
T3 200ºC
T4 135ºC
T5 100ºC
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
BA337E-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 BA337E-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 BA337E-SS
Rate Totaliser 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 BA337E-SS
should be powered from a certified Zener barrier,
galvanic isolator or associated apparatus with an
intrinsically safe voltage output.
The safety parameters of terminals 1 and 2 are:
Ui = 28V dc
Ii = 200mA dc
Pi = 0.84W
Uo = 0
Io = 0
Any certified Zener barrier, galvanic isolator or
associated apparatus with output safety parameters
equal to or less than these input parameters 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 some applications, should be
subtracted from the maximum permitted cable
parameters specified for the Zener barrier, galvanic
isolator or associated apparatus powering the
BA337E-SS Rate Totaliser.
3.5 Pulse input terminals
The BA337E-SS Rate Totaliser has a single pair of
pulse input terminals 5 and 6 that may be configured
for use with different types of flowmeter sensor.
For flowmeters with sensors that require energising
to determine their state, such as switch contacts or a
2-wire proximity detector in a turbine flowmeter, an
external link between terminals 3 & 4 of the BA337E-
SS connects an internal 7V, 6mA supply to the input.
Energising is not required when the Rate Totaliser's
input is connected to a voltage pulse source.
Fitting an external link between terminals 3 & 4
changes the output safety parameters of the Rate
Totaliser input terminals 5 & 6 as shown in the
following table. This table also shows the types of
sensor requiring energising (link fitting).
Output safety parameters
Type of input Link 3 & 4 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
3.5.1 Flowmeter sensors that don't require
energising.
Flowmeters employing magnetic pick-offs or voltage
pulse sensors do not require energising, therefore
terminals 3 & 4 should not be linked. When not
energised i.e. without a link, the output parameters
of the pulse input terminals comply with the
requirements for simple apparatus. 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 their output parameters
Uo, Io & Po to be ignored when assessing the safety
of an intrinsically safe system, thus simplifying loop
assessment and documentation.
Almost any flowmeter with a voltage pulse output
may be directly connected to the BA337E-SS input
in a hazardous area providing that:
a. The flowmeter is a certified intrinsically safe
device having output parameters equal to or
less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
or complies with requirements for
simple apparatus.
b. The flowmeter and associated wiring can
withstand a 500V rms insulation test to earth.
c. The flowmeter is located in the same
hazardous area as the BA337E-SS.
8

The BA337E-SS EC-Type Examination Certificate
specifies that the equivalent capacitance and
inductance of pulse input is:
Ci = 2nF
Li = 4µH
To determine the maximum permissible cable
parameters these figures should be subtracted from
the maximum permitted output parameters Lo and Co
specified by the certificate for the flowmeter
connected to the totaliser's pulse input terminals. The
totalisers pulse input equivalent capacitance and
inductance are small and unlikely to make a
significant difference to the allowable cable
parameters.
3.5.2 Flowmeter sensors that require energising
Flowmeters with switch contacts, proximity detector or
open collector outputs require energising which is
achieved by linking Rate Totaliser 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
flowmeter connected to the totaliser pulse input.
Any certified intrinsically safe flowmeter may be
connected to a BA337E-SS energised input providing
that:
a. The flowmeter 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 flowmeter and associated wiring can
withstand a 500V rms insulation test to earth.
c. The flowmeter is located in the same hazardous
area as the BA337E-SS.
d. Minimum operating voltage of a flowmeter
incorporating a NAMUR compliant proximity
detector is less than 7.5V.
The maximum capacitance and inductance that may
be safely connected to the energised pulse input
terminals 5 & 6 (terminals 3 & 4 linked) is:
Co = 2.4µF
Lo = 200mH
This is not restrictive as the combined capacitance
and inductance of most sensors and the connecting
cable will be less than this.
3.6 Remote reset terminals
The BA337E-SS total display may be reset to zero
by connecting the external reset terminals RS1 and
RS2 together for more than one second. The two
reset terminals have the following input and output
safety parameters:
Uo = 3.8V dc
Io = 1mA
Po = 1mW
Ui = 28V dc
Ii = 200mA dc
Pi = 0.84W
The equivalent capacitance and inductance between
them is:
Ci = 0
Li = 0
The maximum cable capacitance and inductance
that may be safely connected between the reset
terminals RS1 and RS2 is:
Co = 40µF
Lo = 1H
The reset terminals may be directly connected to
any mechanically operated switch located within the
same hazardous area as the BA337E-SS Rate
Totaliser. The switch and associated wiring should
be able to withstand a 500V rms insulation test to
earth.
If the reset switch is required in the safe area a
Zener barrier or intrinsically safe relay is required to
transfer the contact closure into the hazardous area.
A diode return barrier is not suitable for this
application. Almost any intrinsically safe relay with
certification permitting the contacts to be connected
to equipment in the hazardous area may be used.
Alternatively the BA337E-SS 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
9

3.7 Certification label information
The Rate Totaliser 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, location,
year of manufacture and the instrument serial number.
Non European certification information may also be
included.
BA337E-SS Certification information label
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 BA337E-SS.
Terminals 2, 6 and RS2 of the BA337E-SS Rate
Totalisers 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 rms insulation to earth.
Any Zener barrier may be used with the
BA337E-SS providing it's certification is for use with
apparatus in the required Zone and gas group, and
it's output parameters do not exceed the input
parameters of the Rate Totaliser terminals to which it
is connected. Only one polarity of Zener barrier i.e.
positive or negative, may be used in a Rate Totaliser
system.
Fig 2 illustrates the basic circuit that is used for all
BA337E-SS installations protected by Zener
barriers. For simplicity, connections for the optional
pulse output, 4/20mA output and alarms are shown
separately in section 10 of this manual.
Fig 2 BA337E-SS used with Zener barriers
Alternatively the pulse source may be located in the
safe area. Fig 3 shows how an additional Zener
barrier is used to transfer the signal to the rate
totaliser 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.
10