BEKA BA364D User manual

Issue: 10
14th March 2007
BA364D
Intrinsically safe
externally powered
field mounting
counter, timer,
tachometer and clock
Issue 10

2
1. Common features
1.1 Structure of instruction manual
1.2 Operation
1.2.1 Counter
1.2.2 Timer
1.2.3 Tachometer
1.2.4 Clock
1.3 Initialisation
1.4 Intrinsic safety certification
1.4.1 ATEX certification
1.4.2 Power supply
1.4.3 Pulse input terminals
1.4.4 Remote reset terminals
1.4.5 Zones, gas groups & T rating
1.4.6 Certification label information
1.5 Installation
1.5.1 Location
1.5.2 Installation procedure
1.5.3 EMC
1.6 Programming
1.6.1 Security override link
1.7 Servicing
1.7.1 Routine maintenance
1.7.2 Guarantee
1.8 Customer comments
1.9 Accessories
1.9.1 Units of measurement and
instrument identification.
1.9.2 Pipe mounting kits
1.9.3 Stem mounting kit
1.9.4 Optional external push-buttons
1.9.5 Optional control outputs / alarm
outputs
1.9.5.1 Solid state output
1.9.5.2 Intrinsic safety
1.9.6 Optional pulse output
1.9.6.1 Intrinsic safety
1.9.7 Optional 4/20mA output
1.9.7.1 Intrinsic safety
1.9.8 Optional display backlight
Appendix 1 ATEX dust certification
Appendix 2 FM Approval for use in the USA
2. Use as a Counter
3. Use as a Timer
4. Use as a Tachometer
5. Use as a Clock
CONTENTS
The BA364D is CE marked to show compliance with the European Explosive Atmospheres Directive
94/9/EC and the European EMC Directive 89/336/EEC
Please read section 1 plus the section describing the function
that you wish to use.

3
1 COMMON FEATURES
The BA364D is a multifunction intrinsically safe
field mounting instrument that may be
programmed on-site as a counter, timer,
tachometer or as a clock. Complying with the
European ATEX Directive, the instrument has
been certified intrinsically safe for use in
explosive gas and combustible dust
atmospheres.
ATEX dust certification is available as an option -
see Appendix 1.
For use in the USA a version having FM intrinsic
safety and nonincendive approval is available –
see Appendix 2.
Housed in a robust IP66 glass reinforced
polyester (GRP) enclosure with an armoured
glass window, the BA364D is surface mounting,
or may be pipe mounting using one of the
accessory kits described in section 1.9.2
1.1 STRUCTURE OF INSTRUCTION MANUAL
This instruction manual is divided into five
sections. The first covers the common features
of the instrument. The remaining are self
contained sections each describing one of the
BA364D functions.
1. Common features of the instrument
including installation, intrinsic
safety and accessories.
2. Use as a counter
3. Use as a timer
4. Use as a tachometer
5. Use as a clock
1.2 OPERATION
Fig 1.1 shows a simplified block diagram of the
BA364D. The instrument may be programmed
on-site as a counter, timer, tachometer or as a
clock. The two inputs may be individually
configured to accept voltage, contact, open
collector or 2-wire proximity detector inputs.
Accessories include a pulse output, 4/20mA
analogue output and two solid state control
outputs.
Fig 1.1 Simplified block diagram of BA364D
1.2.1 Counter
When configured as a counter the BA364D will
accept pulses on one or both inputs and may be
programmed to display:
Input A
+ Input B
Input A
- Input B
Input A, direction controlled by input B
Input A and B quadrature input
(for position sensing)
An optional pulse output, 4/20mA analogue
output and alarm contacts are available.
See section 2 of this manual for a detailed
description of counter functions.
1.2.2 Timer
The timer functions may be started and stopped
from input A alone, inputs A and B, or from the
front panel pushbuttons. Elapsed time may be
displayed in hh:mm or hh:mm:ss format. The
instrument will normally be ordered with two
optional solid state control outputs.
See section 3 of this manual for a detailed
description of the timer functions.
1.2.3 Tachometer
When programmed as a tachometer the BA364D
has one input which may be conditioned to
operate with most types of pulse output
transducer. The instrument will display rotational
speed per second, minute or hour, or linear
speed in engineering units. To assist with routine
maintenance, a run-time counter records the
number of hours the monitored machinery has
been operating. Optional alarms and an analogue
4/20mA output are available.
See section 4 of this manual for a detailed
description of the tachometer functions.
Please read section 1
plus the section
describing the function
that you wish to use.

4
1.2.4 Clock
When programmed as a digital clock the BA364D
will display local time within a hazardous area.
The two optional solid state outputs may be
programmed to turn on and off twice during each
24 hour period.
See section 5 of this manual for a detailed
description of the clock functions.
1.3 INITIALISATION
Each time power is applied to the BA364D
initialisation is performed. After a short delay the
following display sequence occurs:
All segments of the display are activated
for about 2 seconds.
The product firmware and versionnumber
are shown on the top display and the
current instrument function i.e. Countr,
ELAPSE, tACHO or CLOC are displayed
on the lower display for 2 seconds.
The BA364D starts to function using the
calibration information stored in the
permanent memory.
1.4 INTRINSIC SAFETY CERTIFICATION
1.4.1 ATEX certification
The BA364D has been issued with EC-Type
Examination Certificate number ITS01ATEX2003
by Notified Body Intertek Testing Services (ITS)
confirming compliance with the European ATEX
Directive 94/9/EC for Group II, Category 1, gas
and dust atmospheres, EEx ia IIC T5. The
instrument bears 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 manual describes installations in explosive
gas atmospheres which conform with BS
EN60079:Part14:2003 Electrical Installation in
Hazardous Areas. When designing systems for
installation outside the UK, the local Code of
Practice should be consulted.
For use in the presence of combustible dust,
please refer to Appendix 1 which describes
installations complying with BS EN 50281-1-
2:1999.
1.4.2 Power supply
When installed in a hazardous area the BA364D
must be powered via a Zener barrier or galvanic
isolator from a dc supply located in the safe area.
The input safety parameters for terminals 1 and 2
are: Ui = 28V dc
Ii = 100mA dc
Pi = 0.7W
Any certified Zener barrier or galvanic isolator
with output safety parameters within these limits
may be used. Two system certificates provide
guidance to help selection of suitable devices.
The maximum equivalent capacitance and
inductance between terminals 1 and 2 is:
Ci = 20nF
Li = 20 H
When installing a system not covered by the
BA364D system certificates, these figures must
be subtracted from the maximum cable
parameters for the certified device powering the
BA364D.
1.4.3 Pulse input terminals
The BA364D has two identical inputs designated
A (terminals 3 & 4) and B (terminals 5 & 6).
Each may be connected to a voltage pulse,
switch, open collector or certified intrinsically safe
2-wire proximity detector. The safety parameters
of each input are:
Ui = 28V dc
Ii = 100mA dc
Pi = 0.7W
Uo = 10.5V dc
Io = 9.2mA dc
Po = 24mW
Note: when programmed as a tachometer only
one input may be used and when programmed
as a clock neither of the inputs are available.
Hazardous area mechanically operated switches
comply with the requirements for simple
apparatus and may be directly connected to
either input. Similarly, optically isolated open
collector outputs that comply with the
requirements for simple apparatus may also be
directly connected to either input.
The BA364D system certificates specify some of
the intrinsically safe 2-wire proximity detectors
that may be connected directly to the two
instrument inputs. Other certified intrinsically
safe detectors may be used providing their input
safety parameters less than the BA364D output
parameters.

5
Voltage pulses may be connected to one or both
inputs. They must be from a certified intrinsically
safe source within the hazardous area, or
connected via a Zener barrier or galvanic isolator
from any safe area pulse source. The output
parameters of the barrier or isolator must be less
than the BA364D input parameters.
To comply with certification requirements, all
transducers and associated field wiring
connected to the BA364D input terminals must
be able to withstand an ac test voltage of 500V
rms to earth or frame of the apparatus for one
minute. The maximum equivalent capacitance
and inductance between the pulse input terminals
3 & 4 and 5 & 6 is:
Ci = 20nF
Li = 20 H
When installing systems not covered by the
BA364D system certificates, these figures must
be subtracted from the maximum cable
parameters for the certified device connected to
the BA364D input.
1.4.4 Remote reset terminals
When programmed as a counter, timer or clock
the BA364D display can be reset or synchronised
by connecting terminals 7 and 8 together for
more than one second. These terminals have
the following input and output safety parameters:
Ui = 28V dc
Ii = 100mA dc
Pi = 0.7W
Uo = 3.8V dc
Io = 1.7mA dc
Po = 2.0mW
The display may be reset from within the
hazardous area by any mechanically operated
switch connected directly to terminals 7 & 8.
To reset the 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 may also be used. The system
certificates list suitable devices and define the
maximum cable parameters.
1.4.5 Zones, gas groups and T rating
The BA364D has been certified compliant with
the requirements for Group II, Category 1 G, EEx
ia IIC T5 (Tamb –40 to 60oC) equipment
specified by the ATEX Directive. When
connected to a suitable system the BA364D 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 450oC
T2 300oC
T3 200oC
T4 135oC
T5 100oC
At an ambient temperature between –40 and
+60oC.
Note: the guaranteed operating temperature
range is –20 to +60oC
This allows the BA364D to be installed in all
Zones and to be used with most common
industrial gases.
1.4.6 Certification label Information
The certification label is fitted in a recess on the
top of the enclosure. It shows the ATEX
certification information, BEKA associates name
and web site address. Non European certification
information may also be included. The
instrument serial number and date of
manufacture are recorded on a separate label
inside the terminal compartment

6
1.5 INSTALLATION
1.5.1 Location
The BA364D is housed in a robust IP66 glass
reinforced polyester (GRP) enclosure
incorporating an armoured glass window and
stainless steel fittings. It is suitable for exterior
mounting in most industrial environments,
including offshore and waste water treatment
installations. Please consult BEKA associates if
high vibration is anticipated.
The BA364D enclosure is surface mounting.
Accessory kits described in sections 1.9.2 & 1.9.3
of this manual enable the instrument to be
mounted onto a vertical or horizontal pipe, or to
be supported by conduit.
The field terminals and the two mounting holes
are located in a separate compartment with a
sealed cover allowing the instrument to be
installed without exposing the display assembly.
The BA364D earth terminal is connected to the
internal EMC filters. To achieve the stated radio
frequency interference rejection this terminal
should be connected to a local earth, or to a
cable screen which is earthed in the safe area.
The BA364D enclosure is supplied with a
bonding plate to ensure electrical continuity
between the three conduit / cable entries.
1.5.2 Installation Procedure
Fig 1.2 illustrates the instrument installation
procedure.
a. Remove the instrument terminal cover by
unscrewing the two captive 'A' screws.
b. Mount the instrument on a flat surface and
secure with two M6 screws through the 'B'
holes. Alternatively use one of the
mounting kits described in sections 1.9.2
and 1.9.3
c. Remove the temporary dust seals from the
three cable entries and install the required
glands, conduit fittings or blanking plugs.
Note: the temporary dust seals do not
provide IP66 protection.
d. Connect the field wiring to the terminals as
shown in Fig 1.3.
e. Replace the instrument terminal cover and
evenly tighten the two 'A' screws.
Fig 1.2 BA364D installation procedure
1.5.3 EMC
The BA364D complies with the requirements of
the European EMC Directive 89/336/EEC. For
specified immunity all wiring should be in
screened twisted pairs, with the screens earthed
in the safe area. To prevent circulating currents,
cable screens should only be earthed at one
point in the safe area.
The BA364D earth terminal should be connected
to a local earth, or to a cable screen which is
earthed in the safe area.

7
Fig 1.3 Dimensions and terminal connections
1.6 PROGRAMMING
Detailed programming information is contained in
each of the four function sections of this
instruction manual.
1.6.1 Security override link
To prevent accidental adjustment, or tampering,
access to the programme menus may be
protected by a four digit security code. If the
security code is lost, access to the programmable
functions can be obtained by moving the internal
security link to the override position. The original
security code can then be viewed by selecting
'COdE' from the main menu and pressing P.
To gain access to the security code link, remove
the instrument control cover by undoing the two
‘C’ screws – see Fig 1.2. If the instrument is
fitted with external push-buttons the connecting
ribbon cable should be unplugged. The security
code override link is located on the inner row of
the five pin connector shown in Fig 1.4.
Fig 1.4 Location of security override link
1.7 SERVICING
A fault finding guide is contained in each section
of this manual. If this does not reveal the cause
of the problem, our sales department will be
pleased to help you. Faulty BA364D instruments
should be returned to BEKA associates for repair,
or to our agent in your area, for repair.
1.7.1 Routine maintenance
The mechanical condition of the instrument
should be regularly checked. The interval
between inspections depends upon
environmental conditions. We recommend that
initially instruments should be inspected annually.
1.7.2 Guarantee
Instruments which fail within the guarantee period
should be returned to BEKA associates or our
local agent. It is helpful if a brief description of
the fault symptoms is provided.
1.8 CUSTOMER COMMENTS
BEKA associates is always pleased to receive
comments from customers about our products
and services. All communications are
acknowledged and whenever possible,
suggestions are implemented.

8
1.9 ACCESSORIES
1.9.1 Units of measurement & instrument
identification
All instruments are fitted with a display label
behind the armoured glass window. This label
can be supplied printed with any units of
measurement and tag information specified when
the instrument is ordered. Alternatively the
information may be added on-site via an
embossed strip, dry transfer or a permanent
marker.
To gain access to the display label remove the
terminal cover by unscrewing the two 'A' screws
which will reveal two concealed 'D' screws.
Remove all four 'D' screws and carefully lift off
the front of the instrument - see Fig 1.2. Add
the required legend to the display label, or
replace with a new pre-printed label which can be
supplied by BEKA associates.
The BA364D can also be supplied with a blank or
custom engraved stainless steel plate secured by
two screws to the side of the instrument
enclosure. This plate can accommodate:
1 row of 9 alphanumeric characters 10mm
high.
or 1 row of 11 alphanumeric characters 7mm
high
or 2 rows of 18 alphanumeric characters 5mm
high.
1.9.2 Pipe mounting kits
Two pipe mounting kits are available for securing
the BA364D to a horizontal or vertical pipe.
BA392D Stainless steel bracket secured by
two worm drive hose clips for 60 to
80mm outside diameter pipes.
BA393 Heavy duty stainless steel bracket
secured by a single 'V' bolt. Will
clamp to any pipe with an outside
diameter between 40 and 80mm.
1.9.3 Stem mounting kit
The BA395 stem mounting kit comprises a short
length of stainless steel conduit with a male M20
x 1.5 thread at both ends. This enables the
BA364D to be connected to and supported by
any equipment having an M20 conduit port.
1.9.4 Optional external push-buttons
For applications requiring frequent access to the
programme menus, the BA364D can be supplied
with an external membrane keypad. These push-
buttons which maintain the IP66 enclosure
integrity allow all functions to be controlled
without removing either of the enclosure covers.
1.9.5 Optional control outputs / alarm outputs
The BA364D can be supplied with two
programmable solid state single pole outputs.
The function of these outputs depends upon how
the BA364D has been programmed i.e. as a
counter, timer, tachometer or as a clock. Full
programming information is contained in each
section of this manual
WARNING
These control outputs should not be
used for critical safety applications
such as an emergency shut down
system.
When the BA364D power supply is
turned off or disconnected, both
control outputs will open irrespective
of how they have been programmed.
Annunciators on the instrument display indicate
the status of both control outputs.
1.9.5.1 Solid state output
Each output is a galvanically isolated single pole
solid state switch as shown in Fig 1.5. The
outputs are polarised and current will only flow in
one direction. Terminals A1 and A3 should be
connected to the positive side of the supply.
Ron = 5 + 0.6V
Roff = greater than 180k
Note: Because of the series protection diode
some test meters may not detect a
closed alarm / control output.
Fig 1.5 Equivalent circuit of each control output

9
1.9.5.2 Intrinsic safety
Both control outputs comply with the
requirements for simple apparatus specified in
Clause 5.5 of EN50020:1994. This allows them
to be connected to any intrinsically safe circuit
protected by a certified Zener barrier or galvanic
isolator providing that the output parameters of
each circuit do not exceed:
Uo = 28Vc
Io = 200mA dc
Po = 0.85W
No system certificate has been issued for the
BA364D switch contact outputs, as the system
certificate for the circuit to which the alarms are
connected remains valid.
The maximum equivalent capacitance and
inductance of each BA364D control output is:
Ci = 40nF
Li = 30µH
To determine the maximum permissible cable
parameters, the equivalent output parameters
must be subtracted from the maximum cable
capacitance and inductance specified by the
system certificate of the circuit connected to each
control output.
1.9.6 Optional pulse output
The BA364D can be supplied with an isolated
solid state pulse output for use when the
instrument is programmed as a counter. Section
2 of the manual explains the use and
programming of this option
1.9.6.1 Intrinsic safety
The pulse output is an optically isolated separate
intrinsically safe circuit that has zero output
safety parameters and therefore complies with
the requirements for simple apparatus. This
allows terminals P1 and P2 to be connected to
any intrinsically safe circuit protected by a
certified Zener barrier or galvanic isolator
providing the output parameters do not exceed:
Uo = 28V
Io = 100mA dc
Po = 0.7W
The maximum equivalent capacitance and
inductance of the BA364D pulse output is:
Ci = 20nF
Li = 20µH
To determine the maximum permissible cable
parameters, these figures must be subtracted
from the maximum permitted cable capacitance
and inductance specified by the system
certificate of the circuit connected to the BA364D
– usually a Zener barrier or galvanic isolator.
1.9.7 Optional 4/20mA output
The BA364D can be supplied with an optically
isolated 4/20mA current sink which may be used
when the instrument is programmed as a counter
or as a tachometer. When the BA364D is
programmed as a counter, the 4/20mA output
may be proportional to pulse input rate or the
total number of pulses. When programmed as a
tachometer the current is proportional to
rotational speed.
Note: The 4/20mA current output is not available
when the BA364D is programmed as a timer or
as a clock.
1.9.7.1 Intrinsic safety
The 4/20mA output is an optically isolated
separate intrinsically safe circuit which has zero
output safety parameters and therefore complies
with the requirements for simple apparatus. This
allows terminals C1 and C2 to be connected to
any intrinsically safe circuit protected by a
certified Zener barrier or galvanic isolator
providing the output parameters do not exceed:
Uo = 28V
Io = 100mA
Po = 0.7W
The maximum equivalent capacitance and
inductance of the optional 4/20mA output at the
terminals is:
Ci = 2nF
Li = 8µH
To determine the maximum permissible cable
parameters, these figures must be subtracted
from the maximum cable capacitance and
inductance specified by the system certificate of
the circuit connected to the BA364D 4/20mA
output – usually a Zener barrier or galvanic
isolator.

10
1.9.8 Optional display backlight
The BA364D can be supplied with LED
backlighting to improve display contrast when the
instrument is installed in a poorly illuminated
area. The backlight is segregated from the
measuring circuit and has been certified as a
separate intrinsically safe circuit. System
certificates for use with Zener barriers and
galvanic isolators have therefore been issued.
The backlight must be powered from the safe
area via a Zener barrier or a galvanic isolator as
shown in Fig 1.6. Any certified Zener barrier
may be used providing the output parameters do
not exceed:
Uo = 28V
Io = 159mA
Po = 0.8W
The system certificate lists some of the galvanic
isolators which may be used.
The maximum equivalent capacitance and
inductance at the backlight terminals is:
Ci = 40nF
Li = 30µH
To determine the maximum permissible cable
parameters, these figures should be subtracted
from the maximum cable capacitance and
inductance specified by the barrier or galvanic
isolator powering the backlight. The system
certificates specify maximum cable parameters
for some devices.
Fig 1.6 Backlight powered by Zener barrier

11
Appendix 1
ATEX dust certification
A1.0 ATEX dust certification
In addition to ATEX certification permitting
installation in explosive gas atmospheres which
is described in the main section of this instruction
manual, the BA364D is available ATEX certified
for use in the presence of combustible dusts. If
ATEX dust certification is required it must be
requested when the BA364D Counter, Timer,
Tacho, Clock is purchased.
WARNING
Before installing a BA364D in the
presence of a combustible dust, ensure
that the certification information label
which is located on the top of the
instrument specifies dust certification -
see section A1.2
A1.1 Zones and Maximum Surface
Temperature
The BA364D has been ATEX certified as Group
II, Category 1 GD apparatus Tamb = -20 to 60oC,
with a Maximum Surface Temperature of 80oC.
When installed as specified by EN 50281 Part 1-
2 ‘Selection, installation and maintenance of
electrical apparatus protected by enclosures’, the
instrument may be installed in:
Zone 20 explosive atmosphere in the
form of a cloud of
combustible dust in air is
continuously present, or for
long periods or frequently.
Zone 21 explosive atmosphere in the
form of a cloud of
combustible dust in air is
likely to occur occasionally
in normal operation.
Zone 22 explosive atmosphere in the
form of a cloud of
combustible dust in air is not
likely to occur in normal
operation, but if it does
occur, will only persist for a
short period.
Be used with dusts having a Minimum Ignition
Temperature of:
Dust cloud 120oC
Dust layer on BA364D 155oC
up to 5mm thick
Dust layer on BA364D Refer to
over 5mm thick. EN500281
part 1-2
At an ambient temperature between -20 and
+60oC
A1.2 Certification Label Information
The certification label is fitted in a recess on the
top outer surface of the enclosure. It shows the
ATEX dust certification information including the
maximum surface temperature and ingress
protection, plus the ATEX gas certification
information. Non European information may
also be shown.
The instrument serial number and date of
manufacture are recorded on a separate label
inside the terminal compartment.
A1.3 Calibration & maintenance
The ATEX dust certification relies on the
instrument enclosure being dust-tight. Therefore
the control and terminal covers should only be
removed when dust can not enter the instrument
enclosure. Before replacing the control and
terminal covers ensure that the sealing gaskets
are undamaged and are free from foreign bodies.

12
Appendix 2
FM approval for use in USA
A2.0 Factory Mutual Approval
For installations in the USA, a version of the
BA364D and accessories have been approved
intrinsically safe and nonincendive by FM
Approvals, project identification 3022309. Copies
of the Certificate of Compliance are available
from the BEKA associates sales office and from
the BEKA web site www.beka.co.uk.
The FM Approved version of the BA364D
counter, timer, tachometer and clock is identical
to the ATEX version except the three M20 x 1,5
tapped cable entries are replaced by three plain
unthreaded 22.25mm diameter entries.
Approved hubs and glands are listed in note 8 of
intrinsically safe control drawing CI330-33 and
note 5 of nonincendive control drawing CI330-35.
The certification label on the FM Approved
version includes ATEX gas certification
information so that the rate totaliser may be used
in systems covered by either authority.
A2.1 Intrinsic safey approval
The BA364D is approved to the FM Class 3610
intrinsic safety standard. Installations must
comply with BEKA associates Control Drawing
CI330-33, which is attached to this Appendix,
ANSI/ISA RP12.06.01 ‘Installation of Intrinsically
Safe Systems for Hazardous (Classified)
Locations’ and with the National Electrical Code
ANSI/NFPA70.
The BA364D has a T4 rating at ambient
temperatures up to +60oC and may be used with
the following gases and dusts:
Intrinsic Safety
Division 1 or 2
Class I Group A & B
Group C
Group D
Class II Group E, F & G
Class III
Zone 0, 1 or 2
Class 1 Group IIC
Group IIB
Group IIA
The FM entity parameters are similar to the
ATEX parameters. The intrinsically safe circuits
shown in this manual may therefore be used for
installations in the USA, providing the Zener
barriers and galvanic isolators are FM Approved
and comply with BEKA associates Control
Drawing CI330-33.
A2.2 Nonincendive approval
The BA364D is Class 3611 nonincendive
approved by Factory Mutual allowing it to be
installed in Division 2 Classified Areas without the
need for Zener barriers or galvanic isolators.
Installations must comply with the BEKA
associates Control Drawing CI330-35, which is
attached to this Appendix, and with the National
Electrical Code ANSI/NFPA70.
The BA364D has a T4 rating at ambient
temperatures up to +60oC and may be used with
the following gases and dusts:
Nonincendive
Division 2
Class I Group A & B
Group C
Group D
Class II Group E, F & G
Class III
Zone 2
Class I Group IIC
Group IIB
Group IIA

13
P1
OPTIONAL
VOLTAGE PULSE,
PROXIMITY DETECTOR
OR SWITCH CONTACT
SEE NOTE 5
OPTIONAL
4/20mA
OUTPUT
C1
C2
INPUT
PULSE
OUPUT
4
3
P2
SEE NOTE 4
SEE NOTE 4
SEE NOTE 4
B2 BACKLIGHT
OPTIONAL
B1
SEE NOTE 4
EQUIPMENT
UNCLASSIFIED
LOCATION
REMOTE
RESET
7
8
POWER
SUPPLY
1
2
SEE NOTE 4
BA368C
BA364D
HAZARDOUS (CLASSIFIED) LOCATION UNCLASSIFIED LOCATION
OPTIONAL
ALARM
A1
A2
SEE NOTE 4
INPUTS IN HAZARDOUS (CLASSIFIED) LOCATION
ALARM
OPTIONAL
A4
A3
SEE NOTE 4 SEE NOTE 2
SEE NOTE 1
BA368C LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class I, Zone 0, Group IIC
BA364D LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class II, Division 1, Groups E, F & G
Class III
Class I, Zone 0, Group IIC
or
SEE NOTE 8 & 10
SEE NOTE 7
BA364D & BA368C
Entity Parameters
Terminals 1 & 2
Ui = 30V
Ii = 100mA dc
Pi = 0.7W
Ci = 0.02µF
Li = 0.02mH
Terminals 7 & 8
Ui = 30V dc Uo = 3.8V dc
Ii = 100mA Io = 1.6mA dc
Pi = 0.7W Po = 2mW
Ci = 0.02µF Ca = 1000µF
Li = 0mH La = 1000mH
Terminals B1 & B2
Ui = 30V dc
Ii = 159mA dc
Pi = 0.8W
Ci = 0.04µF
Li = 0.03mH
Terminals P1 & P2
Ui = 30V dc
Ii = 100mA dc
Pi = 0.7W
Ci = 0.02µF
Li = 0.02mH
Terminals C1 & C2
Ui = 30V dc
Ii = 100mA dc
Pi = 0.7W
Ci = 0.002µF
Li = 0.008mH
Terminals 3 & 4
Ui = 30V dc Uo = 10.5V dc
li = 100mA dc lo = 9.2mA dc
Pi = 0.7W Po = 24mW
Ci = 0.02µF Ca = 2.39µF
Li = 0.02mH La = 300mH
Terminals 5 & 6
Ui = 30V dc Uo = 10.5V dc
Ii = 100mA dc Io = 9.2mA dc
Pi = 0.7W Po = 24mW
Ci = 0.02µF Ca = 2.39µF
Li = 0.02mH La = 300mH
Terminals A1 & A2 and A3 & A4
Ui = 28V dc Uo = 0.7V dc
Ii = 200mA dc Io = 1.3µA
Pi = 0.84W Po = 4.1µW
Ci = 0.04µF Ca = 1000µA
Li = 0.03mH La = 1000mH
VOLTAGE PULSE,
PROXIMITY DETECTOR
OR SWITCH CONTACT
SEE NOTE 5 6
5
INPUT SEE
NOTE 10
SEE
NOTE 6
OR

14
OPTIONAL
INPUTS IN UNCLASSIFIED LOCATION
SEE NOTE 8
SEE NOTE 7
REMOTE
BACKLIGHT
OPTIONAL
OPTIONAL
OPTIONAL
SUPPLY
POWER
OUTPUT
OPTIONAL
BA368C LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class I, Zone 0, Group IIC
OUPUT
6
5
INPUT
4
3
INPUT
ALARM
ALARM
4/20mA
BA364D LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class II, Division 1, Groups E, F & G
Class III
Class I, Zone 0, Group IIC
PULSE
RESET
HAZARDOUS (CLASSIFIED) LOCATION
BA368C
BA364D
or
A1
A3
A4
A2
C2
C1
SEE NOTE 4
SEE NOTE 4
SEE NOTE 4
SEE NOTE 2
UNCLASSIFIED LOCATION
1
P1
P2
B1
B2
7
8
2
SEE NOTE 4
SEE NOTE 4
SEE NOTE 4
SEE NOTE 4
SEE NOTE 1
LOCATION
EQUIPMENT
UNCLASSIFIED
SEE NOTE 4
SEE NOTE 4
SEE
NOTE 10
SEE
NOTE 6
OR
BA364D & BA368C
Entity Parameters
Terminals 1 & 2
Ui = 30V
Ii = 100mA dc
Pi = 0.7W
Ci = 0.02µF
Li = 0.02mH
Terminals 7 & 8
Ui = 30V dc Uo = 3.8V dc
Ii = 100mA Io = 1.6mA dc
Pi = 0.7W Po = 2mW
Ci = 0.02µF Ca = 1000µF
Li = 0mH La = 1000mH
Terminals B1 & B2
Ui = 30V dc
Ii = 159mA dc
Pi = 0.8W
Ci = 0.04µF
Li = 0.03mH
Terminals P1 & P2
Ui = 30V dc
Ii = 100mA dc
Pi = 0.7W
Ci = 0.02µF
Li = 0.02mH
Terminals C1 & C2
Ui = 30V dc
Ii = 100mA dc
Pi = 0.7W
Ci = 0.002µF
Li = 0.008mH
Terminals 3 & 4
Ui = 30V dc Uo = 10.5V dc
li = 100mA dc lo = 9.2mA dc
Pi = 0.7W Po = 24mW
Ci = 0.02µF Ca = 2.39µF
Li = 0.02mH La = 300mH
Terminals 5 & 6
Ui = 30V dc Uo = 10.5V dc
Ii = 100mA dc Io = 9.2mA dc
Pi = 0.7W Po = 24mW
Ci = 0.02µF Ca = 2.39µF
Li = 0.02mH La = 300mH
Terminals A1 & A2 and A3 & A4
Ui = 28V dc Uo = 0.7V dc
Ii = 200mA dc Io = 1.3µA
Pi = 0.84W Po = 4.1µW
Ci = 0.04µF Ca = 1000µA
Li = 0.03mH La = 1000mH

15
Notes:
1. The associated intrinsically safe barriers or galvanic isolators must be FM approved and the
manufacturers' installation drawings must be followed when installing this equipment.
2. The unclassified location equipment connected to the associated intrinsically safe barriers
must not use or generate more than 250V rms or 250V dc.
3. Installation should be in accordance with ANSI/ISA RP 12.06.01 "Installation of Intrinsically
Safe Systems for Hazardous (Classified) Locations" and the National Electrical Code
ANSI/NFPA 70.
4. One single channel or one channel of a dual channel barrier or galvanic isolator
with entity parameters complying with the following requirements:
Uo or Vt equal to or less than Ui
Io or It equal to or less than Ii
Po equal to or less than Pi
La equal to or greater than Lcable + Li
Ca equal to or greater than Ccable + Ci
5. Hazardous (classified) location equipment complying with the requirements of note 4 and
the input parameters listed on Sheets 1 and 2 for Terminals 3 and 4, and 5 and 6, or
simple apparatus.
6. Simple apparatus or FM approved associated apparatus with contacts having entity
parameters complying with the following requirements:
Uo or Vt equal to or less than Ui
Io or It equal to or less than Ii
La equal to or greater than Lcable + Li
Ca equal to or greater than Ccable + Ci
7. To maintain NEMA 4X protection between the BA368C and the mounting panel:
Four panel mounting clips should be used
Minimum panel thickness should be 2mm (0.08inches) Steel
3mm (0.12inches) Aluminium
Outside panel finish should be smooth, free from particle inclusions, runs or
build-up around cut-out.
Panel cut-out should be 66.2 x 136.0mm -0.0 +0.5
(2.60 x 5.35 inches -0.00 +0.02)
Edges of panel cut-out should be deburred and clean
Each panel mounting clip should be tighened to between: 20 and 22cNm (1.77 to 1.95 inLb)
Cont.

16
the ‘E’ terminal on the terminal block.
Article 250 of the National Electrical Code and enclosures shall be grounded using
The BA364D enclosure is manufactured from conductive plastic per
hubs are fitted to a BA364D, all metallic glands or conduit hubs must be connected
In addition to the supplied bonding plate, when 2 or 3 metallic glands or conduit
with cable glands / conduit hubs selected from the following table.
When installed in a hazardous (classified) location the BA364D shall be fitted
Any metallic or plastic cable gland or conduit hub that provides
SSTG-1 STG-1 STAG-1
Permitted gland or conduit hub
Killark Glands
together and grounded.
9.
10.
CAUTION:
CMCXAA050 MCR050 MCX050
Metallic glands and hubs must be grounded – see note 9.
Class I
Class II and III
8.
Class
CHMG-50DT
Crouse – Hinds Myler hubs
the required environmental protection.
O-Z / Gedrey hubs
MHUB-1
REMKE hub
WH-1-G
Circuit connections to terminals 1 & 2; 7 & 8; B1 & B2; P1 & P2; C1 & C2;
accordance with the National Electrical Code.
A1 & A2 and A3 & A4 shall be installed as separate intrinsically safe circuits in
11.

17
P1
OPTIONAL
VOLTAGE PULSE,
PROXIMITY DETECTOR
OR SWITCH CONTACT
SEE NOTE 3
OPTIONAL
4/20mA
OUTPUT
C1
C2
INPUT
PULSE
OUPUT
4
3
P2
B2
BACKLIGHT
OPTIONAL B1 EQUIPMENT
UNCLASSIFIED
LOCATION
REMOTE
RESET 7
8
POWER
SUPPLY 1
2
BA368C
BA364D
HAZARDOUS (CLASSIFIED) LOCATION UNCLASSIFIED LOCATION
OPTIONAL
ALARM A1
A2
INPUTS IN HAZARDOUS (CLASSIFIED) LOCATION
ALARM
OPTIONAL A4
A3
SEE NOTE 1 & 2
BA368C LOCATIONS:
Class I, Division 2, Groups A, B,C, D
Class I, Zone 2, Group IIC
BA364D LOCATIONS:
Class I, Division 2, Groups A, B,C, D
Class II, Division 2, Groups E, F & G
Class III
Class I, Zone 2, Group IIC
or
SEE NOTE 5 & 7
SEE NOTE 4
BA364D & BA368C
Terminals 1 & 2
Vmax = 30V
Ci = 0.02µF
Li = 0.02mH
Terminals 7 & 8
Vmax = 30V dc Voc = 3.8V dc
Ci = 0.02µF Isc = 1.6mA
Li = 0mH Ca = 1000µF
La = 1000mH
Terminals B1 & B2
Vmax = 30V dc
Ci = 0.04µF
Li = 0.03mH
Terminals P1 & P2
Vmax = 30V dc
Ci = 0.02µF
Li = 0.02mH
Terminals C1 & C2
Vmax = 30V dc
Ci = 0.002µF
Li = 0.008mH
Terminals 3 & 4
Vmax = 30V dc Voc = 10.5V dc
Ci = 0.02µF Isc = 9.2mA dc
Li = 0.02mH Ca = 2.39µF
La = 300mH
Terminals 5 & 6
Vmax = 30V dc Voc = 10.5V dc
Ci = 0.02µF Isc = 9.2mA dc
Li = 0.02mH Ca = 2.39µF
La = 300mH
Terminals A1 & A2 and A3 & A4
Vmax = 28V dc
Ci = 0.04µF
Li = 0.03mH
VOLTAGE PULSE,
PROXIMITY DETECTOR
OR SWITCH CONTACT
SEE NOTE 3
6
5INPUT SEE
NOTE 7

18
OPTIONAL
INPUTS IN UNCLASSIFIED LOCATION
SEE NOTE 5 & 7
SEE NOTE 4
REMOTE
BACKLIGHT
OPTIONAL
OPTIONAL
OPTIONAL
SUPPLY
POWER
OUTPUT
OPTIONAL
BA368C LOCATIONS:
Class I, Division 2, Groups A, B,C, D
Class I, Zone 2, Group IIC
OUPUT
6
5
INPUT
4
3
INPUT
ALARM
ALARM
4/20mA
BA364D LOCATIONS:
Class I, Division 2, Groups A, B,C, D
Class II, Division 2, Groups E, F & G
Class III
Class I, Zone 2, Group IIC
PULSE
RESET
HAZARDOUS (CLASSIFIED) LOCATION
BA368C
BA364D
or
A1
A3
A4
A2
C2
C1
SEE NOTE 1 & 2
UNCLASSIFIED LOCATION
1
P1
P2
B1
B2
7
8
2
LOCATION
EQUIPMENT
UNCLASSIFIED
SEE
NOTE 7
BA364D & BA368C
Terminals 1 & 2
Vmax = 30V
Ci = 0.02µF
Li = 0.02mH
Terminals 7 & 8
Vmax = 30V dc Voc = 3.8V dc
Ci = 0.02µF Isc = 1.6mA
Li = 0mH Ca = 1000µF
La = 1000mH
Terminals B1 & B2
Vmax = 30V dc
Ci = 0.04µF
Li = 0.03mH
Terminals P1 & P2
Vmax = 30V dc
Ci = 0.02µF
Li = 0.02mH
Terminals C1 & C2
Vmax = 30V dc
Ci = 0.002µF
Li = 0.008mH
Terminals 3 & 4
Vmax = 30V dc Voc = 10.5V dc
Ci = 0.02µF Isc = 9.2mA dc
Li = 0.02mH Ca = 2.39µF
La = 300mH
Terminals 5 & 6
Vmax = 30V dc Voc = 10.5V dc
Ci = 0.02µF Isc = 9.2mA dc
Li = 0.02mH Ca = 2.39µF
La = 300mH
Terminals A1 & A2 and A3 & A4
Vmax = 28V dc
Ci = 0.04µF
Li = 0.03mH

19
Notes:
1. Nonincendive field wiring installations shall be in accordance with the National
Electrical Code ANSI/NFPA 70. The Nonincendive Field Wiring concept allows
interconnection of Nonincendive Field Wiring Apparatus with Associated
Nonincendive Field Wiring Apparatus using any of the wiring methods permitted for
unclassified locations.
2.
Voc equal to or less than Vmax
La equal to or greater than Lcable + Li
Ca equal to or greater than Ccable + Ci
3.
Voc equal to or less than Vmax
La equal to or greater than Lcable + Li
Ca equal to or greater than Ccable + Ci
4. To maintain NEMA 4X protection between the BA368C and the mounting panel:
Four panel mounting clips should be used
Minimum panel thickness should be 2mm (0.08inches) Steel
3mm (0.12inches) Aluminium
Outside panel finish should be smooth, free from particle inclusions, runs or
build-up around cut-out.
Panel cut-out should be 66.2 x 136.0mm -0.0 +0.5
(2.60 x 5.35 inches –0.00 +0.02)
Edges of panel cut-out should be deburred and clean
Each panel mounting clip should be
tightened to between: 20 and 22cNm (1.77 to 1.95 inLb)
and the input parameters listed on Sheet 1 for Terminals 3 and 4, and 5 and 6 or
Hazardous (classified) location equipment complying with the following requirements
simple apparatus.
Field Wiring Apparatus and shall comply with the following requirements:
inputs and to the optional outputs shall be FM Approved as Associated Nonincendive
Apparatus connected to the power supply, remote reset terminals, optional backlight,

20
the ‘E’ terminal on the terminal block.
Article 250 of the National Electrical Code and enclosures shall be grounded using
The BA364D enclosure is manufactured from conductive plastic per
hubs are fitted to a BA364D, all metallic glands or conduit hubs must be connected
In addition to the supplied bonding plate, when 2 or 3 metallic glands or conduit
with cable glands / conduit hubs selected from the following table
When installed in a hazardous (classified) location the BA364D shall be fitted
Any metallic or plastic cable gland or conduit hub that provides
SSTG-1 STG-1 STAG-1
Permitted gland or conduit hub
Killark Glands
together and grounded.
6.
7.
CAUTION:
CMCXAA050 MCR050 MCX050
Metallic glands and hubs must be grounded – see note 7.
Class I
Class II and III
5.
Class
CHMG-50DT
Crouse – Hinds Myler hubs
the required environmental protection.
O-Z / Gedrey Hubs
MHUB-1
REMKE hub
WH-1-G
NIFW = Nonincendive Field Wiring; any of the wiring methods permitted for unclassified
locations, as defined in the National Electrical Code ANSI/NFPA 70, may be used for
this installation.
8.