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LIGHTWEIGHT INDUSTRIAL
PRESSURE TRANSMITTER
PX880 Series
FM
APPROVED
PX880
U Miniature Size
U ±0.25% Accuracy
U All Welded 316 Stainless
Steel Construction
U Zero and Span Adjustability
U Full 5:1 Range Turndown
U 4 to 20 mA Output
U FM and CSA Ratings
PX880-3KGI,
1
⁄2 NPT female
model, shown
smaller than
actual size.
PX881-015GI,
flush mount
model, shown
smaller than
actual size.
1
PX881-CPL, 1
pipe coupling,
sold separately, see
next page.
⁄2 in
The PX880 Series comprises the
most compact, durable, accurate,
cost-effective, full-featured pressure
transmitters available. The 4 to
20 mA output is standard, with a
12 to 48 Vdc power supply.
Designed for stable performance
in the toughest environments, with
316 SS welded construction, PX880
transmitters are ideal for use with
corrosive media and in hazardous
environments.
Both models have FM and CSA
approvals for intrinsic safety and
meet NACE standards for offshore
applications. With the cover retained
by a stainless steel chain and no
internal jumpers for span turndown,
losses due to misplaced or dropped
parts are eliminated.
The small size and light weight
of both models eliminate any
complicated mounting hardware or
mechanical supports, which reduces
installation time substantially. The
integral junction box permits simple
field wiring without the need for
additional hardware, and adds to
the speed and ease of installation.
a voltage output proportional to
the applied pressure. The chip is
isolated from the process media
by a stainless steel diaphragm.
Silicone oil is used to transmit the
process pressure to the sensor.
An amplifier PCB enclosed in
a sealed chamber is used to
convert the millivolt signal from the
sensor to a calibrated 4 to 20 mA
transmitter output. Feed-throughs
for EMI and RF protection are used
between the amplifier board and the
terminal housing.
PX881-PLUG,
see next page.
every transmitter is tested a second
time for pressure and temperature
effects to ensure that it meets
performance specifications. The
transmitters are calibrated to
the upper ranges listed in the
order box, but end users can
recalibrate them to different
ranges. Recalibration is done via
3 screw potentiometers inside the
transmitter’s head. Recalibrating to
any range between the 2 listed
for a particular sensor can be
accomplished with a known
pressure source.
OPERATION
The heart of the PX880 pressure
transmitter is a silicon piezoresistive
sensing chip. This miniature
microetched semiconductor gives
Each transmitter is tested over both
pressure and temperature ranges.
A compensator circuit is used to
bring the output of the sensor into
specification. After compensation,
B-179
The PX881 is flush diaphragm
pressure transmitter, designed to
mount flush against process media
and to prevent any media particles
from collecting at the diaphragm.
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P-PX881 Series Fig. 1
PX880 1⁄2 NPT Series
P-PX881 Series Fig. 2
SPECIFICATIONS
Excitation: 12 to 40 Vdc with reverse
polarity protection
Output: 4 to 20 mA (2 wire)
Accuracy: ±0.2% of calibrated span
including linearity, hysteresis and
repeatability
Max Loop Resistance: 600 Ω @ 24 Vdc
max Ω = (supply voltage – 12) x 50
Storage Temperature:
-40 to 100°C (-40 to 212°F)
Operating Temperature:
-40 to 100°C (-40 to 212°F)
Compensated Temperature:
-29 to 82°C (-20 to 180°F)
Thermal Effects: Zero and span
combined ±0.02% upper range/°F
(30 to 130°F) ±0.032% upper range/°F
(-20 to 180°F)
Proof Pressure: 200% upper range
Stability: ±0.5% of upper range for
6 months
Vibration: 0.1% upper limit for 3 g
@ 200 Hz
Approvals: FM (Intrinsically Safe for
Class 1, 2, 3 Div 1 Groups A, B, C, D, E, G;
explosion resistant for Class 1, 2, 3
Div 1, Groups B, C, D, E, G
NEMA 4 enclosure)
CSA (Intrinsic Safety for Class 1, 2,
3, Div 1 Groups A, B, C, D, E, F, G;
explosion resistant for Class 1, 2, 3
Div 1, Groups B, C, D, E, F, G
Enclosure 4)
Wetted Parts:
PX880: 316 SS
PX881: 316 SS, PTFE gasket and
Hastelloy diaphragm
Pressure Port:
PX880:
1
⁄2 NPTF
PX881: Weldolet pipe coupling
Electrical Connection:
Body Material: 316 SS
Cast Head: CF-8M (316 cast SS) with
Buna-N O-ring
Fluid Fill: DC 200 silicone oil
Response Time: 20 ms
Weight: 725 g (1.6 lb)
ACCESSORIES
MODEL NO. DESCRIPTION
PX881-CPL 38.1 mm (1.5")
pipe coupling
PX881-PLUG Plug
1
⁄2 NPTF
Dimensions:
mm (inch)
1/2-14 NPTF
PROCESS
CONNECTION
31.8
(1.25)
HEX
160.3
(6.31)
143.0
(5.63)
196.9
(7.75)
1/2-14 NPTF
ELECTRICAL
CONNECTION
44.5
(1.75)
80.5
(3.17)
PX880 Series 1⁄2 NPT Female
Connection Transmitter
To Order Visit omega.com/px880 for Pricing and Details
5:1 Turndown PX880 1⁄2 NPT Female Connection
RANGE psig RANGE bar MODEL NO. COMPATIBLE METERS
0-30 to 0-150
0-6 to 0-15 0-0.4 to 0-1 PX880-015GI DP41-E, DP25B-E, DP24-E
0-15 to 0-30 0-1 to 0-2 PX880-030GI DP41-E, DP25B-E, DP24-E
0-20 to 0-100 0-1.4 to 0-6.9 PX880-100GI DP41-E, DP25B-E, DP24-E
0-60 to 0-300 0-4.1 to 0-20.7 PX880-300GI DP41-E, DP25B-E, DP24-E
0-200 to 0-1000 0-13.8 to 0-68.9 PX880-1KGI DP41-E, DP25B-E, DP24-E
0-600 to 0-3000 0-41.4 to 0-207 PX880-3KGI DP41-E, DP25B-E, DP24-E
0-1000 to 0-5000 0-68.9 to 0-345 PX880-5KGI DP41-E, DP25B-E, DP24-E
3 to 15 0.2 to 1.0 PX880-X15GI DP41-E, DP25B-E, DP24-E
PX881 Flush Mount Series
COUPLING
PX881 Series Flush Mount Transmitter
5:1 Turndown PX881 FLUSH MOUNT*
RANGE psig RANGE bar MODEL NO. COMPATIBLE METERS
0-3 to 0-15 0-0.2 to 0-1.0 PX881-015GI
0-6 to 0-30 0-0.41 to 0-2.1 PX881-030GI
0-20 to 0-100 0-1.4 to 0-6.9 PX881-100GI
0-60 to 0-300 0-4.1 to 20.7 PX881-300GI
Comes complete with operator’s manual.
Note: Units are shipped calibrated to highest range.
A pressure snubber should be used with all PX880 Series transmitters to suppress destructive
waterhammer shock waves. Snubbers are determined by the pressure media. PS-2G for
gaseous media, air, steam, etc. PS-2E for water and light oils, PS-2D for dense liquid, motor
oil.
* Requires PX881-CPL 38.1 mm (1
Ordering Example: PX881-030GI, flush mount transmitter with a 0-6 to 0-30 psig range, and
PX881-CPL, coupling.
inH2O 0-75 to 0-373 mbar PX880-150WCGI
224
(8.82)
31.8 D.
(1.25)
Dimensions:
mm (inch)
1
⁄2") coupling.
48.3 D.
(1.90)
[1-1/2
PIPE
SIZE]
(1.41)
25.4
(1.00)
35.8
38.1 HEX
(1.50)
DP41-E, DP25B-E, DP24-E
1/2 NPTF
44.5
(1.75)
80.5
(3.17)
DP41-E, DP25B-E, DP24-E
DP41-E, DP25B-E, DP24-E
DP41-E, DP25B-E, DP24-E
DP41-E, DP25B-E, DP24-E
PRESSURE TRANSDUCERS
CURRENT OUTPUT
B
B-180
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