Murphy Switch PT167EX User Manual

PT-96107B  
Revised 03-06  
Lead Line Pressure  
Catalog Section 05  
Swichgage® instrument  
Model PT167EX  
4-1/2 in. (114 mm) Diameter Dial  
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  
C
US  
**  
Explosion-proof Enclosure  
Description  
Specifications  
Dimensions  
7-3/16 in.  
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.*  
Case: Explosion-proof, sand cast aluminum.  
Lens is removable. CSA Listed for Class I,  
Division 1, Groups C and D.*  
(183 mm)  
Contact Rating: 1 A, 125 V AC.  
7-3/16 in.  
(183 mm)  
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.  
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.  
Limit Contact  
Adjustment  
Knobs  
2 NPT  
Maximum Pressure: 30% overpressure.  
Diaphragm Housing:  
5-3/8 in.  
(137 mm)  
®
Plated steel, Ni-Span ; silicon filled.  
Diaphragm Fluid: Silicone 200.  
Shipping Weight: 16.5 lb (7.5 kg).  
1/2 NPT  
Conduit  
Connection  
Shipping Dimensions: 12 x 12 x 9 in.  
9-7/8 in.  
(251 mm)  
(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  
Applications  
* The PT167EX is CSA listed for ranges 100 to 5000 psi  
(689 kPa to 34.5 MPa) [6.89 to 344.74 bar].  
Applications include highly viscous liquids  
such as crude oil on lead line applications.  
Other applications have included asphalt,  
sludge, abrasive materials, etc.  
**Products covered by this bulletin comply with EMC  
Council directive 89/336/EEC regarding electromag-  
netic compatibility as noted.  
PT-96107B page 1 of 2  
 

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