Low Pressure Switch
(Special Close On Fall)
A low pressure warning switch is fitted to every container
and must be ordered seperately�� The device continuously
monitors the container pressure and in the event of the
pressure dropping below 20 bar (290 psi) the switch
operates to enable the condition to be signalled to a control
unit��
Technical Information
Body:
Hermetically sealed
Stainless Steel
Switch Type:
Normally Closed at Atmospheric
Pressure
Switch Point:
Close on Fall at 20 bar (290 psi)
Open on Rise at 24.1 bar (30 psi)
Tolerance:
+/-0.7 bar (± 10 psi)
Proof Pressure:
34 bar (003 psi)
Electrical Housing:
Epoxy Sealed terminals
Connection:
Brass 1/” NPT
Max. Current:
2.9 A
Voltage Range:
-2 v dc
Electrical Connection:
0.9m (3ft) x 2 Core Cable
Certification:
UL Recognised
IP Rating:
IP
Wire Leads:
1.2 m ( ft)
Overall Size:
3mm (L) x 1mm (Dia)
(1.0” (L) x 0.3” (Dia))
Weight:
0.07 kg (0.192 lbs)
Figure - Low Pressure Switch (Part No. 30.209.00)
Low Pressure Switch
(Standard Open On Fall)
A low pressure warning switch is fitted to every container
and must be ordered seperately�� The device continuously
monitors the container pressure and in the event of the
pressure dropping below 20 bar (290 psi) the switch
operates to enable the condition to be signalled to a control
unit��
Technical Information
Body:
Hermetically sealed
Stainless Steel
Switch Type:
Normally Open at Atmospheric
Pressure
Switch Point:
Open on Fall at 20 bar (290 psi)
Close on Rise at 24.1 bar (30 psi)
Tolerance:
+/-0.7 bar (± 10 psi)
Proof Pressure:
34 bar (003 psi)
Electrical Housing:
Epoxy Sealed terminals
Connection:
Brass 1/” NPT
Max. Current:
2.9 A
Voltage Range:
-2 v dc
Electrical Connection: 0.9m (3ft) x 2 Core Cable
Certification:
UL Recognised
IP Rating:
IP
Wire Leads:
1.2 m ( ft)
Overall Size:
3mm (L) x 1mm (Dia)
(1.0” (L) x 0.3” (Dia))
Weight:
0.07 kg (0.192 lbs)
Figure - Low Pressure Switch (Part No. 304.20.00)
14
SECTION 2 - SYSTEM COMPONENTS
FM-200® (UL/FM)
14A-07H
02
2010-03
