LS200 & L1100 Series Liquid Level Switches
0600009
09-23-08
Catalog Section 15
LS200
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 connects directly into the vessel wall
and can be used with a Murphy weld collar (P/N 15050375) or
Murphy external float chamber (P/N 15700799). L1100
models (1-1/2” NPT) are also available.
LS200NDVOR
device used to operate dump valves or similar devices.
The LS200NDVOR provides a 2” NPT mounting with a
pneumatic output for interfacing with pneumatic devices such
as our Murphy pneumatic dump valve or with other pneumatic
instrumentation.
LS200NDVO
pressure regulator for those applications where the system
provides a filter regulator for “instrument quality” air or gas as the control medium.
LS200N
is the pneumatic level switch without the DVO and filter regulator.
is a float-activated, pneumatic-vent level
is the Dump Valve Operator (DVO) without the
Liquid Level Switches with 2” NPT mounting are float
NOTE:
supplied with a pressure regulator, filter and Murphy 20BPG pressure gage for improved
system life and trouble-free operation.
Features
Designed for harsh gas compressor scrubber applications
304 stainless steel float operates in 0.55 specific gravity and heavier fluids (see Table 1)
LS200 series rated for 2000 psi (13.8 MPa) [138 bar] working pressure
Electric and pneumatic models available
More robust design
All models screw directly into the vessel or can be mounted via external float chamber
Nickel plated body to provide enhanced corrosion protection
Listed for Class I, Div. 1, Grp. C & D locations
Canadian Registration Number OF1476.2
Stainless Steel models are available for corrosive atmospheres.
Trip on rising liquid level only
Pneumatic media devices require clean, dry, instrument quality air or gas. This unit is
Accessories
Refer to LS200 Installation and Operations manual for additional information.
External Float Chamber 15700799
Operating Pressure: 2000psi (13.8MPa)[138 bar]
Operating Temperature
Weld Collar 15050375
Operating Pressure: 2000psi (13.8MPa)[138 bar]
Operating Temperature: 400F (204C)
Shipping Weight: 6 lb. (2.7kg)
:
400F (204C)
Float Shaft Extension, 1”, 15000478 (LS200 Series only)
Float Shaft Extension, 1”, 15000892 (L1100 Series only)
Float Shaft Extension, 6”, (LS200 Series only)
Table 1
LS200 Minimum Allowable Specific Gravity
Model Float Extension
length
(inch) (psi)
LS200
LS200NDVO
*Note: The min. allowable SG will decrease with a decrease in operating
pressure
0 0.55
1 2000 0.7
6 1
0 0.63
1 2000 0.73
6 1.02
Pressure Specific
Gravity
Product Dimensions
LS200, L1100
Table 2
LS200 L1100
A
10.16 in. (258 mm) 11 in. (279 mm)
B
C
D
E
3.44 in. (87 mm) 3.50 in. (189 mm)
1.75 in. (44 mm) 1.56 in. (40 mm)
2.80 in. (71 mm) 3.4 in. (71 mm)
2 NPT 1-1/2 NPT
Application Data
Nom. Size
(inches)
Product Name Insertion Depth (inches) Vertical Clearance (inches)
LS 200 4.6 5.6 2.8 3.15
LS 200N 5.43 6.4 3.3 3.9
L 1200 4.65 5.7 3.9 4.55
L 1200N 5.6 6.7 5.3 6.9
L 1100 4.4 5.4 3.4 4.05
Table 3
Pipe Data
O.D.
(inches)
3 3.5 40ST 0.216 3.068
3 3.5 80XS 0.3 2.9
4 4.5 40ST 0.237 4.026
4 4.5 80XS 0.337 3.826
Std. w/ 1” Extension Std. w/ 1” Extension
Schedule
Number
Table 4
Minimum Clearance
Wall Thickness
(inches)
Inside Diameter
(inches)
LS200N, LS200NDVO and LS200NDVOR with Dump Valve Operator, Pressure Regulator & Gage
CAUTION: LS200 Series parts are not interchangeable with the L1200 Series.
Specifications
All Models
Body: Nickel plated steel; optional 316 stainless
steel (meets NACE standard MR-01-75 for direct
exposure to H
Float: 304 stainless steel (see Table 1 for
application data)
Pressure rating: 2000 psig (13.8 MPa) [138 bar]
(LS200 models only)
O-ring: Viton
LS200
Process connection: 2” NPT
Temperature rating: -20 to 300F (-29 to 149C)
Electrical: SPDT std. (see “Electrical” section for
configuration/rating.
Wiring: 18 AWG x 36 in. (1.0 mm2 x 916 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 to 75 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
S service)
2
LS200 N
Process connection: 2” NPT
Vent valve: 2 way N.C. w/ 1/16in. (2mm) 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 operates to 0.5 specific gravity;
Optional stainless steel to operate in 0.65 specific
gravity
Electrical: SPDT switch
Approximate Shipping Weights and Dim ensions
All models: 6 lb. 10 oz. (3 kg);
14 x 5 x 3-1/2 in. (356 x 127 x 89 mm)
Electrical
How to Order your Level Switch
Build a complete model number using the diagram to the left.
NOTE: Refer to LS-04006N for replacement parts.
*Pending Canadian Registration Number OF1476.2 issued
by ABSA.
**Not available with DPDT snap-switch.
~Supplied with BUOYGLAS float.
Warranty
warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
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- A limited warranty on materials and workmanship for one year is given with this FW Murphy product. A copy of the
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