Explosion Proof / Intrinsically Safe Industrial Pressure Transmitter |
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$
730.00
PX880-015GI
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Explosion Proof and Intrinsically Safe FM & CSA Ratings
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Miniature Size
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±0.25% Accuracy
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All Welded 316 Stainless Steel Construction
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Zero & Span Adjustability
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Full 5:1 Range Turndown
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4-20 mA Output
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View related products - Pressure Transducers
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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
Explosion Proof and Intrinsically Safe approvals 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.
OPERATION
The heart of the PX880 pressure
transmitter is a silicon piezoresistive
sensing chip. This miniature
microetched semiconductor gives 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.
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,
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.
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.
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 Proof 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 Proof 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: 1/2 NPTF
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)
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† All dollar amounts on this site are shown in US currency.
Note: Units are shipped calibrated to highest range.
PX881 flush diaphragm models requires PX881-CPL weld on coupling.
Ordering Example: (1) PX881-030GI is a flush mount Transmitter with a 0-6 to 0-30 psig range, $890.00, plus (1) PX881-CPL weld on coupling for PX881, $30.00, $890.00 + 30.00 = $920.00
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Related Links -
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