Absolute Pressure Transmitter
Absolute Pressure Transmitter Honeywell ST 3000 Series 900 can provide a 4-20 mA output.
The ST 3000 Series 900 Absolute Pressure Transmitter are used in applications in which high accuracy in the vacuum range of pressure is needed. Typical applications include low-pressure measurement in vacuum distillation columns, where energy savings are directly proportional to the vacuum in the column.
The cost-effective ST 3000 Series 900 Absolute Pressure Transmitter are available in two variants – In-line (STA92L/STA94L) and Single-Head (STA922/STA940).
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STA922: 0 to 780 mmHgA; 0 to 1,040 mbarA
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STA92L: 0 to 780 mmHgA; 0 to 1,040 mbarA
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STA940: 0 to 500 psia; 0 to 35 barA
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STA94L: 0 to 500 psia; 0 to 35 barA
The transmitters lead the industry in reliability and stability:
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Stability = +/-0.01% per year
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Reliability = 470 years MTBF
Comprehensive self-diagnostics and three levels of failure reporting help users avoid costly shutdowns, meet regulatory requirements, and attain high quality standards. The pressure transmitters can be used in a wide spectrum of hazardous environments in perfect safety to provide proven, repeatable pressure measurements.
Honeywell ST 3000 Series 900 Absolute Pressure Transmitters
Description
The ST 3000 transmitter can replace any 4 to 20 mA output transmitter in use today and operates over a standard two-wire system.
The measuring means is a piezoresistive sensor, which actually contains three sensors in one. It contains a differential pressure sensor, a temperature sensor, and a static pressure sensor.
Microprocessor-based electronics provide higher span-turndown ratio, improved temperature and pressure compensation, and improved accuracy.
The transmitter’s meter body and electronics housing resist shock, vibration, corrosion, and moisture. The electronics housing contains a compartment for the single-board electronics, which is isolated from an integral junction box. The single-board electronics is replaceable and interchangeable with any other ST 3000 Series 100 or Series 900 model transmitter.
Features
•Choice of linear or square root output conformity is a simple configuration selection.
• Direct digital integration with Experion PKS and other control systems provides local measurement accuracy to the system level without adding typical A/D and D/A converter inaccuracies.
• Unique piezoresistive sensor automatically compensates input for temperature and static pressure. Added “smart” features include configuring lower and upper range values, simulating accurate analog output, and selecting preprogrammed engineering units for display.
• Smart transmitter capabilities with local or remote interfacing means significant manpower efficiency improvements in commissioning, start-up, and ongoing maintenance functions.
