Vaisala PTB110 Analogue Barometric Pressure Transmitter

The Vaisala PTB110 is a compact, low-power barometer for accurate atmospheric-pressure measurement and integration with data loggers, weather stations and environmental monitoring systems.

  • Selectable barometric-pressure ranges from 500 to 1100 hPa
  • Accuracy up to ±0.3 hPa at +20 °C
  • 0–2.5 V, 0–5 V or frequency-output options
  • Less than 4 mA current consumption
  • External trigger supports power-saving operation
  • Compact DIN-rail-mountable construction

Vaisala PTB110 Barometer for System Integration

The Vaisala BAROCAP® PTB110 is designed for accurate barometric-pressure measurement at room temperature and dependable environmental-pressure monitoring over a wide temperature range. Its compact enclosure, low current consumption and simple electrical output make it particularly suitable for equipment manufacturers and autonomous monitoring stations.

Typical applications include automatic weather stations, marine and meteorological data buoys, hydrology stations, agricultural monitoring, environmental data loggers and laser-interferometer compensation.

Select the Correct PTB110 Pressure Range

Pressure rangeRecommended starting pointSelection consideration
500 to 1100 hPa General atmospheric monitoring across a broad elevation range Provides the widest standard barometric range
600 to 1100 hPa Weather stations and environmental systems that do not require the lower range Confirm the minimum expected station pressure at the installation altitude
800 to 1100 hPa Near-sea-level and moderate-altitude monitoring Do not select if site pressure may fall below 800 hPa
600 to 1060 hPa Applications with a lower maximum scaling requirement Match the receiving input scale exactly
800 to 1060 hPa Restricted atmospheric range near normal surface pressure Offers the narrowest listed span; verify all expected weather and altitude conditions

Range selection: use actual station pressure, not sea-level-corrected pressure, when checking whether a sensor range suits the site. Elevation and extreme weather must both be considered before selecting the lower range limit.

Choose the PTB110 Output

Output optionBest suited toIntegration check
0 to 2.5 V DC Low-voltage analogue data-acquisition inputs Confirm input impedance, common ground and the exact pressure scaling
0 to 5 V DC PLCs, data loggers and controllers accepting a 5 V signal Verify that the receiving input cannot overload or clamp the output
Frequency output Compatible counters or dedicated meteorological interfaces Confirm frequency range, wiring and decoding before ordering

The output range is configured for the selected pressure span. Document both values together—for example, 0 to 5 V representing 500 to 1100 hPa—so the controller scaling can be checked during commissioning.

PTB110 Measurement Performance

Measurement specificationPerformance
Pressure ranges 500–1100, 600–1100, 800–1100, 600–1060 or 800–1060 hPa
Resolution 0.1 hPa
Linearity ±0.25 hPa
Hysteresis ±0.03 hPa
Repeatability ±0.03 hPa
Pressure-calibration uncertainty ±0.15 hPa
Accuracy at +20 °C ±0.3 hPa
Long-term stability ±0.1 hPa per year
Response to a pressure step Approximately 500 ms to full accuracy
Settling after power-up Approximately 1 second to full accuracy

Total Accuracy Across Temperature

Operating temperature bandTotal pressure accuracy
+15 to +25 °C ±0.3 hPa
0 to +40 °C ±0.6 hPa
−20 to +45 °C ±1.0 hPa
−40 to +60 °C ±1.5 hPa

The often-quoted ±0.3 hPa value applies around room temperature. Use the total-accuracy value covering the actual field temperature when preparing an uncertainty budget or equipment specification.

Electrical and Mechanical Specifications

SpecificationPTB110
Supply voltage 10 to 30 V DC
Current consumption Less than 4 mA during operation; less than 1 µA in shutdown mode
External control TTL-level supply trigger for switched operation
Minimum voltage-output load 10 kΩ
Maximum load capacitance 47 nF
Pressure port M5 internal thread with a fitting for suitable 1/8-inch tubing
Pressure limits 0 hPa absolute minimum; 2000 hPa absolute maximum
Electrical connection Removable five-wire connector
Enclosure rating IP32
Weight Approximately 90 g
Mounting Surface mounting or 35 mm DIN rail with the appropriate clip

Typical PTB110 Applications

ApplicationWhy PTB110 fitsInstallation priority
Automatic weather station Stable barometric measurement with straightforward data-logger integration Use a proper static-pressure head and weather-protected enclosure
Marine or environmental data buoy Low power consumption suits autonomous stations Protect against moisture, salt, condensation and dynamic wind pressure
Hydrology and agriculture Compact measurement for remote environmental data loggers Confirm site altitude, power budget and enclosure protection
Laser interferometer compensation Pressure input can support wavelength compensation in precision measurement Install in representative room air and use the required calibration interval
OEM equipment Compact housing and voltage or frequency output simplify integration Validate scaling, power switching, warm-up and pressure-port design

PTB110 or Indigo520 Barometric Pressure?

Selection pointPTB110Indigo520 barometric-pressure configuration
Primary role Compact analogue or frequency barometer for integration Full industrial transmitter platform with local and network functions
Pressure range Several selectable ranges covering 500 to 1100 hPa 500 to 1100 hPa
Room-temperature accuracy Up to ±0.3 hPa Total accuracy up to ±0.15 hPa under specified conditions
Outputs 0–2.5 V, 0–5 V or frequency Configurable isolated analogue outputs, relays and Modbus TCP/IP
Display None Optional touchscreen
Additional measurements Barometric pressure only Can connect compatible humidity, temperature or other Indigo probes
Best fit Low-power data loggers, weather stations and OEM systems Laboratories and industrial sites requiring display, Ethernet, relays or multiple parameters
Product information Current product View Vaisala Indigo520

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

Calibration and Maintenance

The PTB110's long-term stability can reduce field-adjustment requirements, but it does not remove the need for periodic calibration. Select the calibration interval according to the required measurement uncertainty, environmental exposure, instrument history and applicable quality procedure.

Inspect the pressure tubing and static-pressure head during scheduled maintenance. A blocked, leaking or water-filled pressure line can cause a significant error even when the barometer itself remains within calibration.

Vaisala PTB110 Supplier and Technical Support in Malaysia

Seacom Process Instruments supplies and supports the Vaisala PTB110 barometric pressure transmitter in Malaysia for weather stations, data buoys, environmental monitoring, hydrology, agriculture, precision measurement and OEM data-logging applications.

Our team can help select the pressure range and electrical output, review power-saving requirements, check the pressure-port installation, prepare controller scaling and arrange suitable calibration support.

Selecting a PTB110? Send us the site elevation, expected pressure range, operating temperature, required output, supply voltage, receiving input and installation environment. We will help confirm the correct configuration.

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