Murphy PXT-01041B User Manual
PXT-01041B page 1 of 2
Description
The PXT Series pressure transmitter is a state-ofthe-art instruments providing 4 to 20 mA
outputs. It features a precision micro-machined
silicon diaphragm with fully welded stainless
steel pressure port for greater accuracy, stability
and a wide range of compatibility.
Silicon technology is used to provide a miniature
micro-machined diaphragm which is
electrostatically bonded to a glass substrate and
is then stitch-bonded within a glass to metal seal
assembly to provide exceptional thermal and
stress isolation. This technology assures you of
high accuracy and stability over a wide range of
operating conditions.
The enclosure is made of 316 stainless steel and
all wetted parts are 316L stainless steel or
HASTELLOY C276.
Applications
The PXT can be used in applications such as
Compressors, Engines, Process Control, Liquid
Level and Pumps.
Specifications
Accuracy (Full Scale, Best Straight Line):
±0.25% including non-linearity, hysteresis and
repeatability. Long term stability better than
0.2% FS over twelve (12) months.
Zero Setting: ±0.5% of full scale (0.25% typical).
Span Setting: ±0.5% of full scale BSL (RSS).
Overpressure/Proof Pressure: 400% for up to
500 psi (3.45 MPa) [34 Bar]. 200% for higher
ranges.
Burst Pressure:
Ranges 0-1000 psi = 600% of full scale or
4000 psi whichever is lower.
Ranges 2000 psi 13.79 MPa) [137 Bar]=
20,000 psi (27.5 MPa) [275 Bar].
Response Time: Frequency response better than
2 kHz.
Storage Temperature: -65 to 200°F (-54 to
93°C).
Operating Temperature: -40 to 180°F (-40 to
82°C).
Compensated Temperature: -20 to 160°F (-29
to 71°C).
Total Thermal Effects Over Compensated
Range: ±2% FS TEB.
Physical:
Enclosure: Weather Resistant.
Body: 316 stainless steel. Meets NACE
MR01-75.
Wetted Parts: 316L stainless steel or
HASTELLOY C276.
Process Connection: 1/4 NPT female.
Electrical Cable: Integral; 60 in. (914 mm);
vented. 1/2 in. NPT male conduit connection
Environmental Effect:
Humidity: No effect.
Mounting: Position/orientation has
negligible effect.
Reverse polarity protected
Shock: 1000g 1ms Half sine Pulse in each of 3
mutually perpendicular axis will not affect
performance.
Vibration: Effect on output response is less than
0.05% FS/g at 30g Peak 10Hz to 2kHz,
limited by 0.05 in double amplitude. (MIL
STD 810C Proc. 514.2-2 curve L).
PXT Power Requirements: Typically 24 VDC
is required, using the Loop Resistance Graph,
9-30 VDC.
PXT Series Transmitter Output: 4–20 mA,
2-wire.
Insulation: Greater than 10 Mohms @ 500 VDC.
RFI Protection: To the European standards of
BS EN 50082-2:1991 in accordance with IEC
801 parts 1 to 6 for suspectibility to EMC and
to BS EN 50081-1992 for emissions.
Voltage Surge/Spike: Protected against a 600 V
spike to IEC 60-2. Reverse polarity protected.
Sealed: Sealed at one atmosphere at sea level for
ranges > 1000 psi (6.89 MPa) [68 Bar].
Vented: Vented for ranges < = 1000 psi
(6.89 MPa) [68 Bar].
UL Certification: Class I, Division 2, Groups A,
B, C and D; Class II, Groups E, F and G.
Pressure transmitter, Model PXT. Intrinsically
safe when installed per system, Diagram No.
05-08-0754. UL File #E169675
Shipping Weigh: 0.90 lb. (408 g).
Shipping Dimensions: 5 x 5 x 5 inches
(127 x 127 x 127 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
PXT Series
■
0.25% Accuracy
■
4-20 mA Output Signal
■
Precision Etched Silicon Sensor
■
Corrosion Resistant Construction
■
High Stability
R
C
R
PXT
PXT-01041B
Revised 06-06
Catalog Section 05
Pressure Transmitters
PXT-01041B page 2 of 2
How to Order
To order, please use the part number designation below.
Part number example:
PXT-100
_____ – _____
Pressure Range†:
Specify For this range
30V30WC -30” H20 to +30” H20 (-76 cm H20 to +76 cm H20) [+/-0.075 Bar]
30V30 -30” Hg to +30 psig (-76 cm Hg to 207 kPa) [2.07 Bar]
30V100 -30” Hg to +100 psig (-76 cm Hg to 689 kPa) [6.89 Bar]
15 0-15 psi (103.4 kPa) [1.03 Bar]
60 0-60 psi (413.7 kPa) [4.13 Bar]
100 0-100 psi (689 kPa) [6.89 Bar]
200 0-200 psi (1.38 kPa) [13.78 Bar]
300 0-300 psi (2.07 kPa) [20.67 Bar]
400 0-400 psi (2.75 MPa) [27.56 Bar]
600 0-600 psi (4.14 kPa) [41.34 Bar]
1000 0-1,000 psi (6.89 MPa) [68.9 Bar]
2000 0-2,000 psi (13.79 MPa) [137.8 Bar]
3000 0-3,000 psi (20.69 MPa) [206.7 Bar]
5000 0-5,000 psi (34.48 MPa) [344.5 Bar]
6000 0-6,000 psi (41.37 MPa) [413.4 Bar]
†
NOTE: Conversions are approximate.
Model
PXT =
Loop Resistance Graph
Supply voltage for the PXMS must be within range of 9-30 VDC. The Graph below
shows the minimum supply voltage (VDC) required for a given load resistance (RL).
Total Load Resistance (RL)*
(OHMS)
Power Supply Voltage (VDC)
*NOTE: Cable resistance effect included in RL.
19V, 500 Ω
29V, 1000 Ω
Under
Voltage
Area
Operating
Area
Over
Voltage
Area
PXT Series Dimensions
Low Pressure Units
1/4 NPTF
2.08 in.
(53 mm)
7/8 Hex
316 Stainless
Steel Housing
2 in.
(51 mm)
2.30 in.
(58 mm)
2.30 in.
(58 mm)
.86 in.
(22 mm)
.866 A/F
1/2 NPTM
7/8 Hex
316 Stainless
Steel Housing
60 in. (1524 mm)
long cable-std.
.86 in.
(22 mm)
1.18 in. Dia.
(30 mm)
1/4 NPTF
1.18 in. Dia.
(30 mm)
.866 A/F
1/2 NPTM
60 in. (1524 mm)
long cable-std.
High Pressure Units
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, 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
1500
250ohm
2
0
1000
500
2
50
0
10
3
0
4
0 5014V @
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