Murphy LS200NDVO Series Manuel utilisateur
0600009
09-23-08
Catalog Section 15
LS200 & L1100 Series Liquid Level Switches
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 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
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 output for interfacing with pneumatic devices such
as our Murphy pneumatic dump valve or with other pneumatic
instrumentation.
LS200NDVO
is the 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
is the pneumatic level switch without the DVO and filter regulator.
NOTE:
Pneumatic media devices require clean, dry, instrument quality air or gas. This unit is
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
Accessories
Refer to LS200 Installation and Operations manual for additional information.
External Float Chamber 15700799
Operating Pressure: 2000psi (13.8MPa)[138 bar]
Operating Temperature
:
400
F (204
C)
Weld Collar 15050375
Operating Pressure: 2000psi (13.8MPa)[138 bar]
Operating Temperature: 400F (204C)
Shipping Weight: 6 lb. (2.7kg)
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 Pressure Specific
Gravity
(inch) (psi)
0 0.55
LS200
1 2000 0.7
6 1
0 0.63
LS200NDVO
1 2000 0.73
6 1.02
*Note: The min. allowable SG will decrease with a decrease in operating
pressure
Product Dimensions
LS200, L1100
A
Table 2
LS200 L1100
10.16 in. (258 mm) 11 in. (279 mm)
B
3.44 in. (87 mm) 3.50 in. (189 mm)
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
Application Data
Table 3
Pipe Data
Nom. Size
(inches) O.D.
(inches) Schedule
Number Wall Thickness
(inches) Inside Diameter
(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
Table 4
Minimum Clearance
Product Name Insertion Depth (inches) Vertical Clearance (inches)
Std. w/ 1” Extension Std. w/ 1” Extension
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
LS200N, LS200NDVO and LS200NDVOR with Dump Valve Operator, Pressure Regulator & Gage
CAUTION: LS200 Series parts are not interchangeable with the L1200 Series.
Warranty
- A limited warranty on materials and workmanship for one year is given with this FW Murphy product. A copy of the
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.
MURPHY and the Murphy logo, are registered and/or common law trademarks of Murphy Industries, Inc. This document, including textual
matter and illustrations, is copyright protected by Murphy Industries, Inc., with all rights reserved. (c) 2008 Murphy Industries, Inc.
Specifications
All Models
Body: Nickel plated steel; optional 316 stainless
steel (meets NACE standard MR-01-75 for direct
exposure to H2S service)
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
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: BUOYGLASoperates to 0.5 specific gravity;
Optional stainless steel to operate in 0.65 specific
gravity
Electrical: SPDT switch
Approximate Shipping Weights and Dimensions
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 BUOYGLASfloat.
Ce manuel convient aux modèles suivants
4
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