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L-5937B page 2 of 2

Typical Wiring Diagram 

How to Order

Specify base model designator and options in
sequence shown below.  Example: 

L100-HL.

Specify part number when ordering Repair Parts
or Kit. Example: 

15000181

Repair Kit L100 and L100W: 

15000103

Consists of glass, gasket, 

4 screws, contact assembly, and float assembly.

Repair Parts L120 : 

15010186:

Contact screw assembly.

15010234:

Float assembly.

Repair Kits L127 and L128:

15000180:

Includes case, contact, 4 mounting

bolts, and 2 gaskets.

15000181 (L127 only)

:

Includes 4 mounting

bolts, 2 gaskets, float assembly, ground strip,
wire, and mounting plate.

15000188 (L128 only)

:

L128 less case assembly.

Dimensions

L100 and L100W

L120

L127 and L128

CL

27/32 in.

(21 mm)

3-1/8 in.

(79 mm)

2-1/8 in.

(54 mm)

2-1/8 in.

(54 mm)

4-5/16 in.

(110 mm)

3-3/8 in.

(86 mm)

2-7/32 in.

(56 mm)

Mounting Holes 4 places, 
5/16 in. (8 mm) diameter

2-7/32 in.

(56 mm)

2-3/4 in.

(70 mm)

    2 in.

*   *

(51 mm)

   2-1/2 in.

*

(64 mm)

2-15/64 in.

(57 mm)

Mounting

** 

holes 4 places
5/16 in. (8 mm)
diameter

2-15/64 in.

(57 mm)

** 

Applies to L127 only 

Applies to L128 only 

47/64 in.

(19 mm)

3/8 in.

(10 mm)

17/32 in.

(13 mm)

1-17/32 in.

(39 mm)

Mounting

holes 2 places

5/16 in. (8 mm)

Oil inlet 
holes

L128 Mounting Dimensions

Base Model (refer to “Application” section)

L100

Sight gage with low limit switch.

L100W

Same as L100 except fittings.

L120

Sight gage with low limit switch.

L127

Sight gage with low limit switch.

L128

Sight gage with low limit switch.

____ - ____

Shipping Weight:

• 

L127: 

8 oz (0.23 kg)

• 

L128:

10 oz (0.36 kg)

Shipping Dimensions (L127 and L128):

4-

3

/

4

x 4-

3

/

4

x 3-

1

/

4

in. (121 x 121 x 83 mm)

Shipping Weight:

1 lb 8 oz (0.68 kg)              

Shipping Dimensions:  

4-

3

/

4

x 4-

3

/

4

x 3-

1

/

4

in. (121 x 121 x 83 mm)

Shipping Dimensions:  

• 

L100:

5-

1

/

4

x 5-

1

/

4

x 5-

1

/

2

in.  

(133 x 133 x 140 mm)

• 

L100W:

4-

3

/

4

x 4-

3

/

4

x 3-

1

/

4

in. 

(121 x 121 x 83 mm)

Shipping Weight:

• 

L100: 

2 lbs. (0.91 kg)

• 

L100W:

2 lbs. (0.91 kg)

Magneto

Murphy 
magnetic 
switch

Float

OR

Option

Blank

Low contact.

LF

Less fittings and hardware.

Printed in U.S.A.   06 8 789

Below is a typical wiring diagram for a level
Swichgage instrument.  A Swichgage instru-
ment can be connected to a Murphy magnetic
switch or magneto. Switch Contact Rating is 
2 A @ 30 VAC/DC resistive.

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, the Murphy logo, and Swichgage

®

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) 2006 Murphy Industries, Inc.

www.fwmurphy.com

918.317.4100   Email: [email protected]

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