Category
Barometric Pressure Transducers
Accurate barometric pressure measurement for labs, weather stations and reference use with the Halstrup-Walcher BA 1000.
A barometric pressure transducer measures the absolute pressure of the atmosphere, which changes with weather and altitude, so instruments needing an atmospheric reference can correct for it. The Halstrup-Walcher BA 1000 covers 80 to 120 kPa, 85 to 115 kPa, 90 to 110 kPa or 95 to 115 kPa ranges, ±1% FS accuracy, with an altitude-adjustable zero.
1 Product · Barometric Pressure Transducer
Selection guide
Barometric Pressure Transducers Guide
How a barometric pressure transducer works
The BA 1000 has no pressure port: it measures only the surrounding atmosphere through a sealed absolute-pressure sensor, referenced to a vacuum. Because it reports true atmospheric pressure rather than a value relative to standard sea level, it can correct gas flow, volume and clean room measurements for the actual weather and altitude conditions on site.
How to choose a barometric pressure transducer
- Range: 80 to 120 kPa, 85 to 115 kPa, 90 to 110 kPa or 95 to 115 kPa, depending on the altitude and margin you need.
- Accuracy: ±1% FS, referenced to ±0.5 hPa at sea level.
- Altitude reduction: factory-adjustable from 0 to 850 m above sea level, so the zero matches your site.
- Display: order with or without a local digital readout.
- Environment: IP53 protection and a 10 to 60 °C operating range.
- Output: 0 to 10 V, 10 to 20 mA or 4 to 20 mA for building management, SCADA or data loggers.
For pressure inside a closed vessel rather than the open atmosphere, see absolute pressure transducers.
FAQ
Common questions
Why measure barometric pressure separately from process pressure?
Barometric pressure changes with weather and altitude, so any measurement referenced to the atmosphere, such as gas volume, flow correction or a clean room pressure cascade, needs its own reading to stay accurate. The BA 1000 provides that reference independently of the process instruments.
What is the difference between the BA 1000 and the AD 1000?
Both are absolute pressure transmitters using the same sensor platform. The BA 1000 has no pressure port and measures only the surrounding atmosphere, with an altitude-adjustable zero. The AD 1000 connects to a process line or vessel to measure absolute pressure there. Choose by what you need to reference.
What accuracy does the barometric pressure transducer offer?
The BA 1000 is accurate to ±1% of full scale, referenced to ±0.5 hPa at sea level. Its altitude reduction is factory-adjustable from 0 to 850 m, so the zero point matches your site elevation rather than a generic sea-level setting.
Can the BA 1000 be used for weather monitoring?
Yes. It suits weather and environmental monitoring stations as well as laboratory and process reference use, since it reports true atmospheric pressure continuously via a 0 to 10 V, 10 to 20 mA or 4 to 20 mA output to a logger or SCADA system.
What protection rating does the BA 1000 have?
IP53, which covers dust and light water spray in a typical plant, lab or cabinet installation. It operates from 10 to 60 °C and is available with or without a local display for on-site reading.
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