Murphy LS200NDVO Series Manuale utente

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



Weld Collar 15050375

Operating Pressure: 2000psi (13.8MPa)[138 bar]

Operating Temperature: 400F (204C)

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

Table 2

LS200 L1100

10.16 in. (258 mm) 11 in. (279 mm)

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

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

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 300F (-29 to 149C)

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: BUOYGLASoperates 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 BUOYGLASfloat.

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