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Read Before Installation - Omega PX540 Series Operator's Manual

Pressure transducers

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Specifications
Excitation:
Output:
Insulation Resistance:
Maximum Loop Impedance:
Performance
Accuracy:
Hysteresis and Repeatability:
Compensated Temperature Range:
Operating Temperature Range:
Thermal Zero Effect:
Thermal Sensitivity Effect:
Maximum Pressure:
Construction
Body Material:
Wetted Parts:
Fill Fluid:
Process Connection:
Electrical Connection:
Response Time:
Weight:
Dimensions:
Fluid hammer and surges can destroy any pressure transducer and must always be avoided. A pressure snub-
ber 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 dam-
aging 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.
10 to 30 VDC
4 to 20 mA two wire
500 VAC
(Supply Voltage -10) x 50 (refer to Figure 4)
0.3% F.S. Typ (0.5% max)
0.1% F.S.
32˚ to 122˚ F (0˚ to 50˚ C)
-4˚ to 175˚ F (-20˚ to 80˚ C)
0.03% F.S./˚ C
0.03% F.S>/˚ C
150% Full Scale
Stainless steel
ANSI 316L Stainless steel
Silicone oil
1/2 NPT male
DIN connector with screw terminals
2 ms
0.35 lb.
Refer to Figure 5.
WARNING!

Read Before Installation

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