Murphy Lead Line Pressure Swichgage Instrument PT167EX - Manual

PT-96107B page 1 of 2
Model PT167EX
■ Designed to Monitor Line Pressures
of Highly Viscous and Mildly
Corrosive Fluids
■ Combination Indicating Gage and
Critical Pressure Switch
■ High and Low Pressure Limit Contacts
Are Visible and Adjustable
■ Explosion-proof Enclosure
Description
The Murphy PT167EX is a pressure
Swichgage instrument connected to a
threaded pressure diaphragm housing. The
Swichgage instrument is enclosed in an
explosion-proof case and is CSA rated for
Class I, Division 1, Groups C and D.*
A Swichgage instrument is a pressure indi-
cating gage with adjustable low and high
pressure limit switches. When the gage
pointer touches the low or high limit switch-
es, an electrical circuit is completed which
can operate alarms and/or shut down
equipment.
The 2 NPT, sealed-diaphragm housing is
attached directly to the Swichgage connec-
tion. The diaphragm housing is filled with a
silicone fluid so that pressure against the
diaphragm causes the Swichgage instrument
to respond. The housing seals the Swichgage
sensing element from the medium being
measured.
Applications
Applications include highly viscous liquids
such as crude oil on lead line applications.
Other applications have included asphalt,
sludge, abrasive materials, etc.
Specifications
Case: Explosion-proof, sand cast aluminum.
Lens is removable. CSA Listed for Class I,
Division 1, Groups C and D.*
Contact Rating: 1 A, 125 V AC.
Dial: 4-1/2 in. (114 mm) white on black,
dual scaled psi /kPa. Other dial configura-
tions available. Consult factory.
Ranges: See How to Order on reverse side.
Gage Accuracy: ±3% full scale.
Process Connection: 2 NPT.
Maximum Pressure: 30% overpressure.
Diaphragm Housing:
Plated steel, Ni-Span ® ; silicon filled.
Diaphragm Fluid: Silicone 200.
Shipping Weight: 16.5 lb (7.5 kg).
Shipping Dimensions: 12 x 12 x 9 in.
(305 x 305 x 229 mm).
Warranty
A limited warranty on materials and workmanship
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
Dimensions
C US
C US
* The PT167EX is CSA listed for ranges 100 to 5000 psi
(689 kPa to 34.5 MPa) [6.89 to 344.74 bar].
**Products covered by this bulletin comply with EMC
Council directive 89/336/EEC regarding electromag-
netic compatibility as noted.
*
**
4-1/2 in. (114 mm) Diameter Dial
1/2 NPT
Conduit
Connection
Limit Contact
Adjustment
Knobs
2 NPT
7-3/16 in.
(183 mm)
7-3/16 in.
(183 mm)
5-3/8 in.
(137 mm)
9-7/8 in.
(251 mm)
PT-96107B
Revised 03-06
Catalog Section 05
Lead Line Pressure
Swichgage
® instrument