Murphy PT167EX User 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 indicating gage with adjustable low and high
pressure limit switches. When the gage
pointer touches the low or high limit switches, 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 connection. 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 configurations 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
* 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 electromagnetic 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
Bourdon Tube Socket–Material/Size
A
S
Specify
Tube
Type
C-Tube
C-Tube
Thru 1,000 psi
(6.89 MPa) [68.95 bar]
Thru 1,000 psi
(6.89 MPa) [68.95 bar]
Range Selection Limits
psi (MPa) [bar]
Grade A Phosphor Bronze (Tube)
Brass (Socket)
316 Stainless Steel
(Tube and Socket)
Tube/Socket Material
PT-96107B page 2 of 2
Typical Installation
The photo at right shows the PT167EX installed
in a lead line. For optimum effectiveness, the
PT167EX should be installed ahead of all other
devices or valves; by positioning it immediately
adjacent to the well outlet, the Swichgage instrument monitors the entire lead line, sensing any
blockage whether sludge build-up in the line or
an accidental closed valve. The pressure transmitter threads into a 2 NPT tee on the lead line.
Internal Wiring
Contact Rating: 1 A, 125 V AC
Ranges
vacuum/psi
Specify kPa/MPa
bar
0 - 100 psi
0 - 160 psi
0 - 200 psi
0 - 300 psi
0 - 400 psi
0 - 600 psi
0 - 1000 psi
100
160
200
300
400
600
1000
0 - 689 kPa
0 - 1.10 MPa
0 - 1.38 MPa
0 - 2.07 MPa
0 - 2.76 MPa
0 - 4.14 MPa
0 - 6.89 MPa
0 - 6.89
0 - 11.03
0 - 13.78
0 - 20.68
0 - 27.57
0 - 41.36
0 - 68.95
How to Order
To order, specify pressure range, bourdon tube and options. Example: PT167EX-R-200-T1.
PT167EX – ___ – ___
If specifying range in bar, kPa/MPa or kg/cm2,
specify appropriate designator after value.
Example: 20B = 20 bar.
B = Bar
K = kPa/MPa
M = kg/cm
2
Tamperproof Contact Accessory
Knob
Lock
Limit
Switch
Knobs
Order 05000610
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.
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: sales@fwmurphy.com
Red
White
LOW C HIGH
Black
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