Murphy LS200 Series Installation

Installation for LS200, LS200N LS200NDVOR Series
and L1100 Liquid Level Switches
Please read the following instructions before installing. A visual
inspection for damage during shipping is recommended before mounting.
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
Disconnect all electrical power to the machine.
Make sure the machine cannot operate during installation.
Follow all safety warnings of the machine manufacturer.
Read and follow all installation instructions.
OBSERVE all pressure and electrical ratings and require-
ments for the devices and the operating environment.
BE SURE all pressure HAS BEEN REMOVED from the
vessel before opening any pressure connections.
Description
LS200
Liquid Level Switches with 2" NPT mounting are float
activated to operate an electrical SPDT snap switch (optional DPDT on
some 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.
LS200NDVOR
is a float-activated, pneumatic-vent level device
used to operate dump valves or similar devices.
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 regulator and filter and Murphy
20BPG pressure gage which is recommended for improved system
life and trouble-free operation.
LS200NDVO
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.
LS200N
Pneumatic level switch without the DVO and filter regulator.
LS200
ø2.19 in.
(56 mm)
LS200 L1100
A 10.16 in. (258 mm) 11 in. (279 mm)
B 3.44 in. (87 mm) 3.50in. (189mm)
C 1.75 in. (44 mm) 1.56 in. (40 mm)
D 2.80 in. (71 mm) 3.4 in. (71 mm)
E 2 NPT 1-1/2 NPT

GENERAL INFORMATION

A
2.5 in. (64 mm) Hex B
1/2 NPT E
3.63 in. (92 mm)
LS200 Series parts are not interchangable with other liquid
level products. Damage caused by the above mentioned
is not covered by our Limited Warranty.
All Models
Body: Nickel plated steel; Optional 316 stainless steel (meets NACE standard
MR-01-75 for direct exposure to H 2 S service
Float: 304 Stainless steel to operate in 0.5 specific gravity or
heavier fluids (LS200 Series models only)
Pressure Rating: 2000 psig (13.8 MPa) [138 bar] (LS200 models only)
O-Ring: Viton
LS200
Process Connection: 2"NPT
Temperature Rating: -20 to 300°F (-29 to 149°C)
- Optional -20 to 400°F (-29 to 204°C): (not available with DPDT).
Electrical: SPDT std. (see "Electrical" section for configuration/rating).
Wire: 18 AWG x 36 in. (1.0 mm
LS200NDVOR
Process Connection: 2"NPT
DVO Valve: 3 way N.C. w/manual operator; all connections 1/8" NPT
(minimum 30 psig required)
Filter/Pressure Regulator Set:
- Regulator: 0 to75 psig (0 to 517 kPa) [0 to 5.17 bar] range
- Maximum input pressure: 300 psig (2.07 MPa) [20.7 bar]
LS200NDVO
Process Connection: 2"NPT
DVO Valve: 3 way N.C. w/ manual operator; all connections 1/8" NPT
LS200N
Process Connection: 2"NPT
Vent Valve: 2 way N.C. snap action w/ 1/16 in. (2 mm) orifice and Viton seat;
Inlet: 1/8" NPT ; Outlet: 3/8" NPT
L1100
Process Connection: 1-1/2" NPT
Pressure Rating: 1500 psig (10.3 MPa) [103.2 bar]
Float: BUOYGLAS
Optional stainless steel to operate in 0.65 specific gravity
Electrical: SPDT switch
LS200N, LS200NDVO and LS200NDVOR
with Dump Valve Operator,
Pressure Regulator and Gage
Supply Exhaust
TOP VIEW
Manual
Valve
Operator
Signal out
D
C
ø2.19 in.
(56 mm)
LS200N
2" 11-1/2 NPT
3/8 NPT
exhaust
LS-04006N page 1 of 4
CAUTION
2 x 916 mm)
TM operates to 0.5 specific gravity;
20BPG-75
Pressure Gage
DVO
Regulator/Gage
3.53 in.
Assembly
(90 mm)
4.59 in.
(117 mm)
ø1.75 in.
(44 mm)
3.44 in.
(87 mm)
3.73 in.
(95 mm)
8.49 in. (216 mm)
LS-04006N
Effective 02-04
Section 15
(
00-02-0563)
Filter/
Regulator
Nipple
1/8 NPT
x 1/8 NPT
3.30 in. (84 mm) min.
clearance required for
float movement.