Murphy Switch L1100 Series User Manual

LS-04004B  
Effective 02-04  
Catalog Section 15  
(00-02-0561)  
LS200 & L1100 Series Liquid Level Switches  
FWMurphy  
Electric Switch  
Designed for Harsh Gas Compressor Scrubber Applications  
304 Stainless Steel Float Operates in 0.5 Specific Gravity  
and Heavier Fluids  
Pending  
LS200 Series Rated for 2000 psi (13.8 MPa) [138 bar]  
Working Pressure  
LS200Liquid Level Switches with 2” NPT mounting are  
float activated to operate an electrical SPDT snap switch  
(optional DPDT on LS200 models) for alarm or shutdown of  
an engine or electric motor. The LS200 screws directly into  
the vessel wall and can be used with a weld collar or external  
float chamber. L1100 models (1-1/2” NPT) are available.  
Electric and Pneumatic Models Available  
Improved Design Provides Better Snap Action and  
Dependability with Reduced Number of Moving Parts  
All Models Screw Directly Into the Vessel or Can Be Mounted  
Via External Float Chamber  
Nickel Plated Body to Provide Improved Corrosion Protection  
Pneumatic  
Switch  
Improved Float Connection Thread Design Provides a More  
Secure Connection  
Listed for Class I, Div. 1, Grp. C & D Locations  
Canadian Registration Number OF1476.2  
LS200NDVOR is a float-activated,  
pneumatic-vent level device used to  
operate dump valves or similar devices.  
The Murphy Gas Compressor Scrubber Level System (SLS)  
The LS200NDVOR provides a 2” NPT  
mounting with a pneumatic snap action  
output for interfacing with pneumatic  
devices such as our DVU scrubber  
dump valve or with other pneumatic  
instrumentation. This unit is supplied  
with a pressure filter regulator and  
Murphy pressure gage which are  
recommended for improved system life  
and trouble-free operation.  
The system provides for  
High Level Shutdown Switch  
Stainless steel float actuated level switches to alarm  
and/or shutdown the equipment.  
liquid control in gas scrubber  
applications, by dumping  
liquids to drain and protecting  
compressors with a high  
liquid level switch. Wetted  
metal parts are made to  
survive constant use in  
corrosive environments.  
See Bulletin: SLS-04005B for  
more details.  
LS200: 2” NPT pipe connection; Rated 2000 psi  
(13.7MPa) [137bar]; Class I, Division 1. SPDT  
snap-switch standard. DPDT Optional.  
All Stainless Steel available.  
LS200NDVO  
Filter/Regulator &  
MURPHYGAGE®  
Pneumatic level switch with snap action  
Dump Valve Operator (DVO) without the  
Pressure Regulator for those applications  
where the system provides a filter regulator  
for “instrument quality” air or gas as the  
control medium.  
Control  
Panel  
“Instrument  
Quality Air/Gas  
Supply”  
LS200N  
Pneumatic level switch without the DVO  
and filter regulator.  
Pneumatic Level Control  
Float actuated level snap-acting switch  
controls pneumatic pressure to open  
and close dump valve.  
Warranty  
Pneumatic Dump  
Valves See DVU-01069B  
for more details.  
A limited warranty on materials and  
workmanship is given with this FWMurphy  
product. A copy of the warranty may be  
viewed or printed by going to  
LS200NDVOR: Dump Valve Operator,  
pressure regulator, and pressure  
indicating MURPHYGAGE.®  
Two piece union design with manual valve operator  
allows soft plug and hard seat to be replaced  
without disassembling outlet piping or scrubber  
pipe connection. Diaphragm actuated valves  
operate on 30-70 psi (207-483 kPa; 2-5 bar).  
FWMurphy  
P.O. Box 470248 Tulsa, Oklahoma 74147 USA +1 918 317 4100 fax +1 918 317 4266 e-mail [email protected] website www.fwmurphy.com  
FWMurphy  
Control Systems & Services Division, P.O. Box 1819; Rosenberg, TX, 77171 USA • 281-633-4500; fax + 281-633-4588  
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