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PXT-01041B page 1 of 2
Description
The PXT Series pressure transmitter is a state-of-
the-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