BEKA BA377E, Руководство пользователя

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1. DESCRIPTION
The BA377E is an intrinsically safe, panel mounting
instrument with a single input that can be configured
as a Timer or as a Clock. As a Timer the BA377E is
able to measure and display the elapsed time
between external events, or control external events
via two optional factory fitted control outputs.
When configured as a Clock, the instrument can
display time in a variety of formats and the two
optional control outputs may be configured to switch
loads
on and off at pre-set times.
This instruction manual is divided into sections.
Common features
2. Intrinsic safety certification
3. System design for hazardous areas
4. Installations
5. Accessories
Timer
6. Operation as a timer
7. Configuration example
8. Maintenance
Clock
9. Operation as a clock
10. Configuration example
11. Maintenance
The common features sections of this instruction
manual describe ATEX certification for use in gas
atmospheres.
For international applications the BA377E has IECEx
gas certification which is described in Appendix 1.
For applications in the USA and Canada the BA377E
has ETL and cETL certification which is described in
Appendix 2.
This instruction manual supplements the abbreviated
instruction sheet supplied with each instrument.
2. INTRINSIC SAFETY CERTIFICATION
The BA377E has IECEx and ATEX gas certification.
This section of the instruction manual describes
ATEX gas certification. IECEx and other approvals
are each described in separate appendixes to this
manual. The intrinsic safety of the instrument is
unaffected by whether it is configured as a Timer or
as a Clock.
2.1 ATEX gas certification
Notified Body Intertek Testing and Certification Ltd
have issued the BA377E with an EC-Type
Examination Certificate number ITS16ATEX28408X.
This confirms compliance with harmonised European
standards and this certificate has been used to
confirm compliance with the European ATEX
Directive for Group II, Category 1G equipment. The
instrument 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 other countries such as Switzerland.
This 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 of the UK the local Code of
Practice should be consulted.
2.2 Zones, gas groups and T rating
The BA377E has been certified Ex ia IIC T5 Ga
-40°C ≤ Ta ≤ 70°C. 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
In gases that may be used with equipment having a
temperature classification of:
T1 450°C
T2 300°C
T3 200°C
T4 135°C
T5 100°C
At ambient temperatures between -40 and +70°C.