The Series 27, 28, and 30 non-submersible pressure transducers are specifically designed for demanding industrial applications where the primary criteria are reliability and economy. These units provide repeatable, precision measurements under the most hostile conditions. Capable of measuring vacuum to pressure as high as 2000 psi (13,790 kPa), these transducers can meet most any industrial pressure measurement requirement.
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Series 27, 28, & 30 Features
- Pressure Ranges up to 2000 psi (13,790 kPa)
- Accuracy up to ±0.10% FS
- Analog Outputs of 4-20 mA or VDC
- Welded 316 SS or Titanium Construction
- Optional Lifetime Lightning Protection
- Optional Temperature Measurement Output
- Custom Cable Lengths
Series 27, 28, & 30 Applications
- Tank Level
- Compressors
- Pump Control
- Vacuum
- Bubbler Systems
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All KPSI Transducers utilize a highly accurate pressure sensor assembly specifically designed for hostile fluids and gases. The assembly is integrated with supporting electronics in a durable housing constructed of 316SS or Titanium. A wide variety of electrical and pressure connections are available to accommodate most any system interface.
These units are designed for installation in a Class I, Division 1, Groups A, B, C, and D, Class II, Division 1, Groups E, F and G, Class III, Division 1 hazardous location when connected to appropriate apparatus such as those manufactured by R. G. Stahl, Inc., and others. KPSI transducers are type approved by the American Bureau of Shipping (ABS) and are UL, CUL, and FM approved. The Series 27, 28, 30 are CE compliant to EN 61326-1:2006 and EN 61326-2-3:2006. All KPSI Transducer calibrations are traceable to the National Institute of Standards and Technology (NIST).
Dated 10/09
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Parameter
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30(1)
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27
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28
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Units
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Comments
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PRESSURE RANGES
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Full Scale Pressure Ranges (2)
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2 thru 300
(14 thru 2070)
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1 thru 300
(7 thru 2070)
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psi
(kPa)
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for vented gage reference
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15 thru 500
(103 thru 3, 450)
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5 thru 2000
(34 thru 13,790)
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psi
(kPa)
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for sealed gage reference
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15 thru 500
(103 thru 3,450)
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15 thru 2000
(103 thru 13,790)
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psi
(kPa)
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for absolute reference
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Proof Pressure
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1.5
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x FS
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Burst Pressure
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2.0
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x FS
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STATIC PERFORMANCE
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Static Accuracy (3)
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±0.10
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±0.25
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±0.50
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% FSO
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BFSL method
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Resolution
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Infinitesimal
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ENVIRONMENTAL
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Wetted Materials
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316 SS or Titanium, Viton®
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Viton® is a registered trademark of DuPont.
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Compensated Temp Range
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0 to 50
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ºC
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Thermal Error (4)
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±0.05 (5)
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%FSO/ºC
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worst case
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Operating Temp Range
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-20 to 60
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ºC
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ELECTRICAL
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Excitation
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9-30 (9)
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VDC
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for mA, VDC
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Input Current
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20
3.5
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mA max
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for mA output
for VDC output
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Output (8)
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4 - 20
0 - 5
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mA
VDC
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options available (6)
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Zero Offset
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±0.12 (7)
< 0.25
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mA
VDC
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for mA output
for VDC output
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Output Impedance
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See Loop Resistance diagram, pg. 7 of datasheet
< 10
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ohm
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for mA output
for VDC output
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Insulation Resistance
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100
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mega ohm
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at 50 VDC
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Circuit Protection
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Polarity, surge/shorted output
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PHYSICAL
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Approximate Weight
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0.44 (198)
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lbs (g)
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transducer
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TEMPERATURE OUTPUT OPTION (Not Intrinsic Safety Approved)
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Temperature Range
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-20 to 60
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°C
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available for 4-20mA output versions only
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Output Signal
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4-20
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mA
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Temperature Measurement Accuracy
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±4
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°C
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not IS approved
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LIGHTNING PROTECTION (OPTIONAL) (10)
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Life Expectancy
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> 1000 operations
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Peak Clamping Voltage
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36 volts
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Response Time
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< 10 nsecs
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- For ranges > 100 psi (690 kPa), output is 4-20 mA only.
- Intermediate pressure ranges are available.
- Static accuracy includes the combined errors due to nonlinearity, hysteresis and nonrepeatability on a Best Fit Straight Line (BFSL) basis, at 25°C per ISA S51.1.
- Thermal error is the maximum allowable deviation from the Best Fit Straight Line due to a change in temperature, per ISA S51.1.
- For ranges < 5 psi (34 kPa), maximum thermal error is ±0.1% FSO/°C.
- Custom VDC output levels can be provided up to 2.5 VDC less than the excitation supply voltage. Contact Customer Service for VDC output availability.
- For ranges <=2 psi (14 kPa), zero offset is ±0.25 mA.
- For ranges < 2 psi (14 kPa), only 4-20 mA output is available.
- Intrinsic safety limits excitation to 28V.
- The power supply needs to be limited to 150 mA to avoid lock up of the gas tube after a supression event.
Specifications subject to change without notice.