Murphy Level Swichgage Instrument OPLH - Manual (Page 3)

OPLH-94122B page 3 of 4
8 in.
(203 mm)
6-25/64 in.
(162 mm)
8 in.
(203 mm)
Rear mounting holes
for surface mounting
3/8-16 UNC-2B
7/8 in. (22 mm)
deep, 4 places.
Removable lid
to access adjustable
contact knobs.
6-3/4 in.
(171 mm)
6-3/4 in.
(171 mm)
Mounting Hole
7-35/64 in. (192 mm)
diameter. Not required
for surface mounting.
1/2 NPT
optional
rear or side
conduit
3/8-16 UNC-2B
7/8 in. (22 mm)
deep, 4 places.
Process Connection
1/4 NPT Female
Explosion-proof Enclosure (“EX” Option)
8-7/16 in.
(214 mm)
3-3/8 in.
(86 mm)
7-7/8 in.
(200 mm)
3-15/16 in.
(100 mm)
4-1/32 in.
(102 mm)
Mounting Holes
9/32 in. (7 mm)
diameter 3 places.
Not available on
panel mount
square case.
1/2 NPT
conduit
Process Connection
1/4 NPT male on
bourdon tube models
and 1/4 NPT female
on bellows models.
Surface
NOTE:
Panel mount
square case models
do not include
mounting flange and
include bolt circle
shown in Panel Mount
Enclosure versions
(see below).
120
120
120
5-7/16 in.
(138 mm)
2-57/64 in.
(73 mm)
Mounting Hole
4-3/4 in. (121 mm)
diameter.
Process Connection
1/4 NPT Male.
Panel
1/4 in. (6 mm) dia.
holes (3 places.)
on 5-13/64 in.
(132 mm) b.c.
(bolt circle),120
apart, clocking
as shown
Dimensions
Surface / Panel Mount Enclosure (Square Case)
Panel Mount Enclosure
(Round Case)
Typical Applications
Above Ground Tank
Below Ground Tank
SWICHGAGE ®
Flow regulator
(recommended)
Pressure
regulator
Head
Pressure
Air compressor
Tank
Tank
SWICHGAGE ®
Direct Mount
Remote
SWICHGAGE
®
with Sensing Line
Underground
Direct and Remote Tank
Flow regulator
(recommended)
Pressure
regulator
SWICHGAGE ®
1 foot
Ground surface
Air compressor
Underground tank
(vented)