How to connect ex transmitters dpt-2000alw – Delta Controls DPT-2000 User Manual
Page 11
9 IOM-DPT-A: FEB 2014
Appendix Exi
5.4. Input inductance and capacity: Ci = 20nF, Li = 1,1mH
5.5. Supply voltage min.: 13.5VDC **
5.6. Load resistance:
from 28V linear supply
Ro max [Ω] = for transmitter without display back lighting
from a source with “trapezial” or “rectangular” characteristic supply
Ro
max [Ω] =
*) barrier resistance
**) 16,5V for transmitter with display back lighting
5.7. Temperature
Temperature of transmitter’s surface from regard temperature of shield part as on figure in point 2.3. can't
surpass the admissible values of temperatures for temperature class of steam and gases according with
standard PN-EN 60079-0.
Simultaneously the casing temperature should not surpass max. temperature value Ta definite for
conditions power supply in Certificate Exi and p.5 of Appendix Exi.
6.
How to connect Ex transmitters DPT-2000ALW.
The transmitter and other devices in the measuring loop should be connected in accordance
with the intrinsic-safety and explosion-safety regulations and the conditions for use in
dangerous areas.
Failure to observe the intrinsic-safety regulations can cause explosion and the resulting hazard
to people.
In hazardous areas, connections
to the control terminals must be
made using only instruments which
are permitted to be used in such areas.
mA
Ex-Milliammeter
TEST
To measure the current in the transmitter without
disconnecting the signalling circuit, connect
a milliammeter to control sockets
Hazardous area
Safe area
Aplisens KAP-03Ex Communicator
_
_
+
TEST
SIGNAL
+
RD
.
3
2
VWX
MNO
DEF
YZ#
5
6
PQR
*
+/
9
GHI
8
0
@%&
1
4
JKL
7
STU
ABC
RE
F2
PV
F4
F3
F4
PF
F1
Jumper
a Ex power supply
see p.5.
+
Ro
_
The transmitter is equipped in additional communication resistor
RD = 240 Ω.
During normal operation terminals –> and RD resistor is used when you wish to communicate with the transmitter locally (from its terminals) and . Terminals –> and Transmitter electrical installation should be realised with engineering standard requirements. It is not allowed to repair or otherwise interfere with the transmitter’s electrical circuits in any 28V – 13.5V** – (300Ω* * 0,02A) 0,023A Uzas. – 13.5V** 0,023A i Delta Controls KAP-03Ex Communicator
Ro < 250
way. Damage and possible repair may be assessed only by the manufacturer or another
authorized party.
i