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Instruction Manual Supplement DOLPHIN VL Systems ATEX_EN_en
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5.4.1 Wiring Diagram Flow Switch
Part no.:
VL 0100 – 0220 A
►
FSW/2063
VL 0270 A
►
FSW/2756
VL 0320
–
0750 A
►
FSW/2089
Supplier reference:
Barksdale BFS-10- …NO-ST-EXI
Electrical data:
Normally open (NO)
2
1
II 1G Ex ia IIB T6 Ga
II 1D Ex ia IIIC T85°C Da
Operated with a certified switch amplifier for intrinsically safe
circuit, maximum values
U
i
= 28 VDC ; I
i
= 50 mA ; L
i
= 4 µH ; Ci = 40 pF
Ambient temperature range -40 … +75°C, IP 65
Minimum flow rate for flow switch (FS) switch point
Machine
l/min
m
3
/h
VL 0100 A, VL 0180 A
5.0
0.3
VL 0130 A, VL 0170 A, VL 0220 A
5.3
0.32
VL 0270 A
11.7
0.7
VL 0320 A, VL 0430 A, VL 0510 A, VL 0630 A,
VL 0750 A
21.7
1.3
VL 0530 A
23.3
1.4
VL 0800 A
30
1.8
Note, a 20 second delay should be incorporated before switch signal is acted upon to al-
low the system to stabilize / establish a flow rate.
If the application involves the pump-down of a large volume, service liquid flow into the
liquid ring pump can be lower for a period longer than 20 seconds from start up. In this
case, the flow switch activation time delay can be increased as long as the pump outlet
temperature and low liquid level switches are active and the suction pressure is steadily
decreasing (i.e. higher vacuum). When normal operating pressure is reached the signal
from flow switch should then be activated.
5.4.2 Wiring Diagram Resistance Thermometer
Part no. :
TS/2753
Supplier reference :
H&B Sensors
PT100 3 wire, Type 11 Exia head
Electrical data :
PT100 3 wire RTD -50 … +250°C
Head: Ɛx II 1G Ex ia IIC T4
Ui= 28 V, Ii= 100 mA, Pi= 700 mW
Red
White
3 WIRE PT100 CLASS B
TO BS EN 60751
Содержание DOLPHIN VL 0100 A
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Страница 35: ...Note...
