Murphy L150 - User Manual

Description
The L150 Series Level SWICHGAGE
®
is a combination liquid
level gauge and low limit switch; each unit includes (1) a chamber
with pivotal float, (2) an indicating dial with pointer, and (3) a low
level contact. When properly installed and maintained, the float
operates the pointer which, in turn, both indicates level during nor-
mal operation, and closes a switching circuit if the level falls to the
low-limit set point.
Applications
The primary use of the L150/EL150K1 is for engine cooling sys-
tems, surge or expansion tanks, condenser radiator or vapor
phase systems, pressurized or atmospheric systems. The Level
SWICHGAGE
®
can also be used to monitor lube oil, hydraulic
fluid or diesel fuel reservoirs and activates alarms and/or shut-
down at a predetermined minimum level.
These instruments are built for low pressure systems with a
maximum of 25 psi (172 kPa) [1.72 bar].
Specifications
Level SWICHGAGE
®
Series
For Engine Liquids
L-6795B
Revised 10-99
Catalog Section 15
(00-02-0058)
L150/EL150K1 Series for Coolants,
Lube Oils, Fuel and Hydraulic Fluid
L150
Case: Die cast aluminum, poly-urethane coat-
ed; approximate dimensions; 4-1/2 x 4-3/4 x
2-3/4 in. (114 x 121 x 70 mm).
Mounting Holes: (2) 9/32 in. (7 mm) diameter
at 4-1/2 in. (114 mm) on center.
Float: Brass.
Lens: Polycarbonate.
O-rings: Saturated Nitrile, are suitable for
coolant or hydrocarbons. Maximum tempera-
ture 250°F (121°C).
Gasket: Neo-cork.
Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper
cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting.
Contact Rating: 2 A @ 30 VAC/DC.
Wire: (1) 16 AWG x 26 in. (1.5 mm
2
x 660 mm)
with terminals.
Shipping Weight: 29 oz. (0.82 kg.).
Shipping Dimensions: 5-1/4 x 5-1/4 x
5-1/2 in. (133 x 133 x 140 mm).
EL150K1
Case: Die cast aluminum, poly-urethane coat-
ed; approximate dimensions; 5 x 4-3/4 x 2-3/4
in. (127 x 121 x 70 mm).
Mounting Holes: (2) 9/32 in. (7 mm) diameter
at 4-1/2 in. (114 mm) on center.
Float: Brass.
Lens: Polycarbonate.
O-rings: Saturated Nitrile, are suitable for
coolant or hydrocarbons. Maximum tempera-
ture 250°F (121°C).
Gasket: Neo-cork.
Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper
cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting.
Snap-Switch: SPDT rated 10 A @ 125 VAC;
0.5 A @ 125 VDC; 10 A 30 VDC.
Wire: (3) 18 AWG x 14 in. (1.0 mm
2
x 356 mm).
Shipping Weight: 42 oz. (1.2 kg.).
Shipping Dimensions: 5-1/4 x 5-1/4 x
5-1/2 in. (133 x 133 x 140 mm).
EL150EX
Case: Sand cast aluminum, painted;
approximate dimensions; 6-1/2 x 5-3/4
x 5-1/4 in. (165 x 146 x 133 mm).
Mounting Holes: (2) 5/16 in. (8 mm)
diameter at 5-1/2 in. (140 mm) on center.
Float: 304 Stainless steel.
Lens: Tempered glass.
O-rings: Saturated Nitrile, are suitable for
coolant or hydrocarbons. Maximum tempera-
ture 250°F (121°C).
Gasket: Neo-cork.
Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper
cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting
and 1/2 NPT to 1/4 NPT reducer fitting.
Snap-Switch: SPDT rated 10 A @ 125 VAC;
0.5 A @ 125 VDC; 10 A 30 VDC.
Wire: Wired to terminal block.
Shipping Weight: 5 lbs. (2.26 kg.).
Shipping Dimensions: 6-1/2 x 6-3/4 x 6-3/8
in. (165 x 171 x 162 mm).
®
• Monitors level of
coolant, lube oil,
diesel fuel and
hydraulic fluid.
• Indicating Gauge
• Low Limit Switch
• Float Operated
• Explosion-proof
model is available.
SWICHGAGE
®
*Products covered by this bulletin comply with EMC Council directive 89/336/EEC regarding electromagnetic compatibility except as noted.
*
1/4 NPT
1/4 NPT
1/2 NPT
Conduit
Connection
(side of case)
1/2 NPT
Explosion-
proof Case
1/2 NPT
(bottom of case)
CSA Listed for Hazardous Location:
Class I, Division 1, Group C & D
Adjustable
Limit Contact
1/2 NPT
Test
Knob
Test
Knob
Snap-Switch
1/2 NPT
Conduit
1/2 NPT

Summary

Level SWICHGAGE Series Overview

Product Description

Explains the Level SWICHGAGE® as a combination liquid level gauge and low limit switch for various engine fluids.

Applications

Details uses in engine cooling systems, surge tanks, and for monitoring lube oil, fuel, or hydraulic fluid levels.

Product Specifications

L150 Series Specifications

Provides detailed specifications for the L150 model, including case, mounting, float, O-rings, and contact rating.

EL150 K1 Series Specifications

Details specifications for the EL150K1 model, covering case, mounting, float, O-rings, snap-switch, and wire configurations.

EL150 EX Series Specifications

Outlines specifications for the EL150EX model, including materials, CSA listing, and connection types.

Product Details and Accessories

Dimensions

Presents detailed dimensional drawings and mounting hole specifications for L150, EL150K1, and EL150EX models.

Radiator Fittings

Lists specific fittings (PS, PS-Barbed, PS-D) for adapting the SWICHGAGE to radiators, including tube fitting sizes.

Repair Kits

Catalog of available repair kits for L150 and EL150K1 models, specifying which parts are included in each kit.

Accessories and Diagrams

Includes available accessories, standard electrical diagrams for models, and fittings kits for separate ordering.

Warranty Information

Details the two-year limited warranty on materials and workmanship for Murphy products.

Murphy L150 Specifications

General

Brand	Murphy
Model	L150
Category	Test Equipment
Language	English