Omega Products PX162-027G5V Installation Manual
PX161, PX162, PX163, PX164
Pressure Transducers
INSTRUCTION
SHEET
M0260/0902
Signal conditioned pressure sensors are solid state
piezoresistive devices. They are ideally suited to
applications requiring exact measurement of pressure
where the benefits of repeatability low hysteresis, and long
term stability are important. They offer state-of-the-art
benefits of hybrid IC devices, including compactness,
ruggedness, and reliability. Computer controlled laser
trimming provides close control of important sensor
parameters at a lower total cost and higher performance
than can be achieved with discrete circuitry. Circuitry to
provide temperature compensation is an integral part of
each device and is optimized on each unit as part of the
calibration procedure. Null and full scale output are
similarly controlled. No adjustment or recalibration by the
user is required.
Soldering
Limit soldering to 315°C (600°F) maximum, with duration
of 10 seconds maximum.
Cleaning
Proper cleaning fluids should be selected, based on type of
contaminant to be removed. OMEGA recommends
alcohols or fluorinated solvents.
PX160
PX-160 Series Transducers measures pressure in very low
ranges, such as -20 to +120 cm H2O, ±5" H2O, 0-10", H2O,
and 0-27.68" H2O (0-1 psi). The gage and differential type
sensors feature excellent sensitivity
The PX160 Series are contained in a thermornoplastic
housing. The 0.10" x .020" printed circuit board terminals
exit on the opposite side from the ports.
WARNING!
Read Before Installation
Fluid hammer and surges can destroy any pressure transducer
and must always be avoided. A pressure snubber should be
installed to eliminate the damaging hammer effects.
Fluid hammer occurs when a liquid flow is suddenly stopped, as
with quick closing solenoid valves. Surges occur when flow is
suddenly begun, as when a pump is turned on at full power or a
valve is quickly opened.
Liquid surges are particularly damaging to pressure transducers if
the pipe is originally empty. To avoid damaging surges, fluid lines
should remain full (if possible), pumps should be brought up to
power slowly, and valves opened slowly. To avoid damage from
both fluid hammer and surges, a surge chamber should be
installed, and a pressure snubber should be installed on every
transducer.
Symptoms of fluid hammer and surge’s damaging effects:
a) Pressure transducer exhibits an output at zero pressure (large
zero offset). If zero offset is less than 10% F.S., user can usually
re-zero meter, install proper snubber and continue monitoring
pressures.
b) Pressure transducer output remains constant regardless of
pressure.
c) In severe cases, there will be no output.
OMEGA Order Housing Measuring Pressure
Number Number Type Range - In. H2O Port
PX161-027D5V 161PC0lD Vacuum 0-27.68 P
2
PX162-027D5V 162PC0lD Differential 0-27.68 P1& P
2
PX162-027G5V 162PC01G Gage 0-27.68 P
2
PX163-005BD5V 163PC0ID36 Bi-Dir Diff. ±5 P1& P
2
PX163-2.513135V 163PC0ID75 Differential ±2.5 P1& P
2
PX164-005D5V 164PC01D76 Differential 0-5 P1& P
2
PX164-010D5V 164PC01D37 Differential 0-10 P1& P
2
PX163-120D5V 163PC01D48 Differential -7.87 to 47.24 P1& P
2
PX160 General Specifications*
Parameter Min. Typ. Max. Units
Full Scale Output (F.S.O.)** (1) 4.85 5.00 5.15 V
(2) ±2.5
Null Offset (1) 0.95 1.00 1.05 V
(2) 3.45 3.50 3.55
Output at Full Pressure (3) 5.80 6.00 6.20 V
Response Time 1 msec
*Excitation (10 Vdc PX 163-120 D5V) 4.80 8.00 12.00 Vdc
Supply Current 8.00 20.00 mA
Output Current
Source 10.0 mA
Sink 5.0
Ratiometricity
7 to 8 or 8 to 9 V ±0.50 % F.S.O.
8 to 12 V ±2.00
Stability over 1 year ±0.50 % F.S.O.
Shock Qualification tested to 50 G, 11 msec, half sine
Vibration Qualification tested to 10 to 2,000 Hz at 10 G sine
Temperature
Compensated -18 to +63°C (0 to +145°F)
Operating -40 to +85°C (-40 to +185°F)
Storage -55 to +125°C (-67 to +257°F)
Media Compatibility P
1
: Dry gases only
Cavity Volume P1= 0.081 in
3
P2: Limited only to those media which will not attack
P2= 0.0081 in
3
polyester, silicon or silicone based adhesive.
Weight 28 grams nominal (1 oz.)
Termination 0.010" x 0.020" nominal printed circuit board terminals
Output Ripple None, dc device
Short Circuit Protection Output may be shorted indefinitely to ground
Ground Reference Supply and Output are common
*General specification at 8.0 **F.S.O. is the algebraic difference (1) Positive (or negative)
±0.01 Vdc Excitation, 25°C between end points (output at pressure measurement.
(except for PX163-120D5V null and full pressure). The F.S.O. (2) Positive and negative
at 10.0 ±.01 Vdc excitation, will vary proportionately with pressure measurement
25°C supply voltage (sensor not (3) Output at positive
internally regulated). (or negative) pressure.
PX160 SPECIFICATIONS Pressure Ranges, Inches H20
Parameter ±3 ±2.5 0-5 0-10 0-27.68 -20 to 120cm H
2
0 Units
Sensitivity: per inch. H2O, typ. 0.50 1.0 1.0 0.50 0.18 0.91 V
Linearity (Best Fit Straight Line)
P2>P1, max. ±1.00 ±1.00 ±1.00 ±1.00 ±2.00 ±0.50 Typ. %F.S.O.
P2<P1, max. ±0.50 ±0.50 ±0.50 ±0.50 ±1.00 ±0.50 Typ. %F.S.O.
Temperature Error, Combined
& Sensitivity Shift
25° to 5°, 25° to 45° ±1.00 ±1.00 ±1.00 ±1.00 - ±1.25 %F.S.O.
25° to -18°, 25° to 63°C, max. - - - - ±1.00 ±1.25 %F.S.O.
25° 25° to 85°, typ. - - - - +2.00 ±1.25 %F.S.O.
Overpressure, max. 5 5 5 5 10 350 cm H
2
O psi
Repeatibility & Hysteresis, typ. ±0.25 ±0.25 ±0.25 ±0.25 ±0.15 ±0.15% F.S.O. %F.S.O.
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