10-8
IM 01F06A00-01E
10. EXPLOSION PROTECTED TYPE INSTRUMENT
10.3.5 Installation Diagram
Intrinsically Safe
F100301_1.EPS
[Remote type]
DYA (converter)
SUPPLY
PULSE
A
B
T (*1)
C
A
B
T
DY (flowmeter)
SUPPLY
PULSE
Safety barriers
Safety barriers
[Integral type]
DY-N (flowmeter)
Hazardous Location
(Zone 0)
Non Hazardous
Location
Non Hazardous
Location
DYC: Signal cable
(*1) Wire for T terminal
With temperature sensor type : installed
Without temperature sensor type: not installed
Electrical parameters:
Ui=30V Ii=165mA Pi=0.9W
Ci=37nF Li=0mH
Installation Requirements between Flowmeter, Converter and
Safety Barrieres:
Uo Ui Io Ii Po Pi Co CiCcable
Lo LiLcable
Uo, Io, Co, and Lo are parameters of safety barrier.
Ccable and Lcable are the maximum allowable cable
parameters.
Hazardous Location
(Zone 0)
WARNING
• The safety barrier must be SAA certified.
• Input voltage of the safety barrier must be less
than 250Vrms/Vdc.
• In any safety barriers used the output current
must be limited by a resistor ‘R’ such that
Io=Uo/R.
Type “n”
[Remote type]
A
B
T (*1)
C
A
B
T
DY (flowmeter)
[Integral type]
Non Hazardous
Location
Non Hazardous
Location
DYC: Signal cable
(*1) Wire for T terminal
With temperature sensor type : installed
Without temperature sensor type: not installed
SUPPLY
PULSE
SUPPLY
PULSE
Power
Supply
Power
Supply
Receiver
Receiver
DYA (converter)
DY-N (flowmeter)
General Purpose
Equipment
General Purpose
Equipment
Hazardous Location
(Zone 2)
Hazardous Location
(Zone 2)
F100301_2.EPS
WARNING
Output voltage of power supply must not exceed
30Vdc and will void the certification.
10.3.6 Data Plate
Intrinsically safe and Type “n”
WARNING
• The specifications of Intrinsically safe type and
Type n are described (engraved) on these data
plates. For use of SAA, select a specification
either Intrinsically safe type (Ex ia) or Type n
(Ex n), then erase unnecessary specification
at the customer side.
Once a specification has been selected, never
it can be changed again. (ex. Never use the
flowmeter as Type n if it has selected Intrinsi-
cally safe type firstly.)
To Next Page
Loading...
Need help?
General
