Vaisala PTB330TS Barometric Pressure Transfer Standard

The Vaisala PTB330TS is a portable, battery-operated reference instrument for accurate barometric-pressure checks in the field and laboratory.

  • PTB330 digital barometer with Vaisala BAROCAP® technology
  • Handheld MI70 indicator with graphical display and data logging
  • 500 to 1100 hPa barometric-pressure range
  • Class A pressure accuracy for demanding reference measurements
  • Optional HMP155 probe for humidity and temperature measurement
  • Available with one, two or three pressure modules
  • Supplied in a durable weatherproof transport case

Vaisala PTB330TS Barometric Pressure Transfer Standard

The Vaisala PTB330TS is a portable, battery-operated reference instrument for accurate barometric-pressure checks in the field and laboratory.

  • PTB330 digital barometer with Vaisala BAROCAP® technology
  • Handheld MI70 indicator with graphical display and data logging
  • 500 to 1100 hPa barometric-pressure range
  • Class A pressure accuracy for demanding reference measurements
  • Optional HMP155 probe for humidity and temperature measurement
  • Available with one, two or three pressure modules
  • Supplied in a durable weatherproof transport case

Portable Barometric Pressure Reference for Field and Laboratory Work

The Vaisala PTB330TS combines a PTB330 digital barometer and a handheld MI70 indicator in a portable transfer-standard package. It is intended for reference measurements, field comparisons and the verification of installed barometers in meteorological, aviation, laboratory and demanding industrial applications.

The MI70 indicator powers the barometer, displays live readings and trends, and records measurement data. Components and accessories are protected in a fitted weatherproof transport case, making the system practical for movement between sites.

Current product: PTB330TS remains listed by Vaisala with current product documentation and an order form valid from 20 January 2025. It should not be marked as discontinued.

Choose the PTB330TS Configuration

ConfigurationRecommended whenSelection consideration
Pressure only The work is limited to barometer checks and atmospheric-pressure reference measurements Includes the PTB330 barometer and MI70 indicator
Pressure, humidity and temperature Environmental conditions must be recorded together with pressure Add the compatible HMP155 probe and its selected options
One pressure module A compact reference with high-accuracy pressure measurement is sufficient Lowest-complexity PTB330TS configuration
Two pressure modules Internal comparison and improved measurement confidence are required The instrument can monitor the difference between modules
Three pressure modules Maximum redundancy is required for demanding reference work Provides additional internal comparison capability

The optional Vaisala HMP155 humidity and temperature probe can be ordered with an additional temperature probe and manually controlled sensor-purge options where required.

PTB330TS System Components

ComponentFunctionIncluded or optional
PTB330 digital barometer Measures barometric pressure using Vaisala BAROCAP® sensors Included
MI70 handheld indicator Powers the barometer and provides display, trends and data logging Included
Weatherproof transport case Protects the instrument and accessories during transport and storage Included
HMP155 probe Adds relative-humidity and temperature measurement Optional
MI70 Link software and cable Transfers logged data to a computer Optional
Accredited calibration Supports documented measurement traceability Optional ISO/IEC 17025 service

Key Measurement and Operating Specifications

SpecificationPTB330TS
Barometric-pressure range 500 to 1100 hPa
Pressure accuracy class Class A configuration for demanding reference measurements
Optional humidity range 0 to 100 %RH with HMP155
Operating temperature −10 to +40 °C
Operating humidity Non-condensing
Maximum pressure limit 5000 hPa absolute
Display Backlit graphical LCD on MI70
Power supply Rechargeable NiMH battery pack with AC adapter, or four AA alkaline batteries
Typical continuous operation Approximately 11 hours at +20 °C with the rechargeable battery pack
Data logging Up to 30 days, depending on the logging configuration and operating conditions
Data transfer MI70 Link software with the appropriate USB or RS-232 cable

Where PTB330TS Fits

ApplicationHow PTB330TS is usedImportant consideration
Meteorological stations Field comparison of an installed barometer against a portable reference Use a stable pressure connection and allow sufficient settling time
Aviation facilities Independent pressure checks under the facility's approved procedures Confirm accuracy, traceability and procedural requirements before selection
Calibration and testing laboratories Transfer of a pressure reference between controlled locations Maintain calibration history and account for environmental conditions
Industrial sites Verification of barometers used in environmental or process-support measurements Check pressure range, connection method and required uncertainty
Environmental surveys Portable pressure logging with optional humidity and temperature data Protect the instruments from condensation and direct weather exposure during use

PTB330TS, PTB330, PTB110 or Indigo520?

Selection pointPTB330TSPTB330PTB110Indigo520
Primary purpose Portable pressure transfer standard and field reference High-accuracy fixed digital barometer Compact fixed barometer for integration Fixed industrial transmitter platform
Portability Portable, battery operated and supplied in a transport case Designed for permanent wall, DIN-rail, panel or pole installation Designed for permanent equipment installation Designed for permanent wall or panel installation
Pressure measurement 500 to 1100 hPa using a PTB330 Class A barometer High-accuracy BAROCAP® measurement with one, two or three pressure sensors Selectable atmospheric-pressure ranges with analogue or frequency output Barometric-pressure measurement through a configurable industrial transmitter
Local interface MI70 graphical handheld indicator Optional graphical display with measurement trends No local display Optional touchscreen display
Data logging Built into the MI70 workflow Stores historical barometric-pressure data and pressure trends Requires an external data logger Connects to the site's control or data system
Redundancy Available with one, two or three pressure modules Available with one, two or three pressure sensors for internal comparison Single pressure sensor System redundancy depends on the selected transmitter and installation design
Additional parameters Optional HMP155 humidity and temperature probe Barometric pressure Barometric pressure Supports compatible Indigo probes and transmitters
Recommended use Reference measurements and verification visits Professional meteorology, aviation, maritime systems and demanding fixed installations Weather stations, data loggers and OEM equipment Industrial sites requiring display, relays, analogue output or Ethernet
Product link Current product Explore Vaisala PTB330 Explore Vaisala PTB110 Explore Vaisala Indigo520

Recommended Field Comparison Procedure

  1. Confirm that the PTB330TS calibration status and uncertainty meet the purpose of the comparison.
  2. Inspect the pressure fittings, tubing, battery condition and instrument case before travelling to site.
  3. Place the transfer standard near the instrument under test and protect it from rain, condensation, direct sunlight and rapid temperature changes.
  4. Connect both instruments to the same representative atmospheric pressure without creating flow or pressure loss.
  5. Allow the equipment and pressure readings to stabilise before recording results.
  6. Log several readings rather than relying on a single instantaneous comparison.
  7. Record pressure units, timestamps, environmental conditions and any height difference between pressure ports.
  8. Evaluate the observed difference against the combined uncertainty and the acceptance limits in the applicable procedure.

Transfer standard does not mean pressure generator: PTB330TS measures atmospheric pressure accurately for comparison work. It does not generate or control pressure like a pneumatic pressure calibrator.

Calibration and Measurement Traceability

The required calibration option should be selected according to the uncertainty, quality-system and accreditation requirements of the work. Vaisala factory calibration documentation is available, while optional ISO/IEC 17025 accredited calibration can be specified for the PTB330 and optional HMP155.

Between calibrations, keep a history of check results, transport events and any abnormal exposure. Allow the system to stabilise after transport before conducting an important comparison, particularly when moving between substantially different temperatures.

Vaisala PTB330TS Supplier and Technical Support in Malaysia

Seacom Process Instruments supplies and supports the Vaisala PTB330TS barometric pressure transfer standard in Malaysia for meteorological services, aviation facilities, laboratories, environmental monitoring and demanding industrial measurement.

Our team can help select the pressure-module configuration, HMP155 options, data-transfer accessories and calibration service. We can also review the intended comparison method and the information needed for a suitable configuration.

Configuring a PTB330TS? Send us the intended application, pressure range, required uncertainty, instruments to be checked, humidity and temperature requirements, logging needs and calibration expectations.

Ask Seacom

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  PTB330TS Catalogue   (381.29k)

  PTB330TS Order Form   (122.35k)


Specific References

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