Vaisala PTB330TS Barometric Pressure Transfer Standard


  • Accurate measurement
  • Chemical purge
  • Excellent long term stability
  • New, fast temperature probe
  • Portable, battery operated transfer standard with data logging capability
  • Barometric pressure with Vaisala BAROCAP® Digital Barometer PTB330
  • Optional humidity and temperature measurements with HMP155
  • Vaisala HUMICAP®180R sensor – superior long-term stability
  • Data can be logged, and transferred to a PC via MI70 Link software

Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

 Vaisala PTB330TS Barometric Pressure Transfer Standard merges a Vaisala PTB330 digital barometer with a handheld MI70 indicator into a portable unit, serving as a transfer standard. You can also opt for the HMP155 probe to measure humidity and temperature accurately.

The operational Vaisala PTB330TS unit consists of a Vaisala PTB330 digital barometer, a hand-held MI70 indicator, an optional HMP155 humidity and temperature probe, optional MI70 Link PC software, a user’s guide, and a weatherproof transfer case with a shoulder strap.


  • For Professional Meteorology
  • Aviation
  • Laboratories
  • Demanding Industrial Applications

Key Benefits

Take The Lab To The Field
Vaisala PTB330TS comes in a durable and weatherproof transport case that can be easily carried and shipped. Vaisala PTB330TS makes field inspection accurate and easy. It combines a Vaisala PTB330 digital barometer with a hand-held MI70 indicator within a portable unit functioning as a transfer standard.

Easy To Use
Data can be logged, and transferred to a PC via MI70 Link software.

High Measurement Accuracy & Excellent Long-term Stability
Vaisala PTB330 series features extremely high accuracy. All Vaisala PTB330 barometers come with a NIST traceable, factory calibration certificate, also optional ISO/IEC 17025 accreditation calibration services are available.


Operating temperature
−10 … +40 °C (+14 … +104 °F)
−40 … +60 °C (−40 … +140 °F)
−80 … +60 °C (−112 … +140 °F)
Operating humidity Non-condensing
Maximum pressure limit 5000 hPa abs.
Power supply Rechargeable NiMH battery pack with
AC-adapter or 4xAA-size alkalines,
type IEC LR6
Menu languages English, Chinese, French, Spanish,
German, Russian, Japanese, Swedish,
Display LCD with backlight, graphic trend
display of any parameter, character
height up to 16 mm
Data logging capacity 2700 points
Alarm Audible alarm function
Compliance • EMC Directive (2004/108/EC)
Complies with the EMC product
family standard EN61326‑1
• Electrical equipment for
measurement control and
laboratory use
• Basic immunity test requirements
• Low Voltage Directive
• ROHS Directive (2002/95/EC)
Operation Time (Using Rechargeable Battery Pack)
Continuous use with PTB330 11 h typical at +20 °C (+68 °F)
Datalogging use Up to 30 days
Measurement Performance
Barometric Pressure (PTB330)
Measurement range 500 … 1100 hPa
Linearity 1) ±0.05 hPa
Hysteresis 1) ±0.03 hPa
Repeatability 1) ±0.03 hPa
Calibration uncertainty 2) ±0.07 hPa
Accuracy at +20 °C (+68 °F) 3) ±0.10 hPa
Temperature dependence 4) ±0.1 hPa
Total accuracy -40 … +60 °C (-40 … +140 °F) ±0.15 hPa
Long-term stability ±0.1 hPa/year
Settling time at startup (one sensor) 4 s
Response time (one sensor) 2 s
Acceleration sensitivity Negligible
Relative Humidity (HMP155)
Measurement range 0 … 100 %RH
Accuracy (incl. non-linearity, hysteresis and repeatability)
at +15 … +25 °C (+59 … +77 °F) ±1 %RH (0 … 90 %RH)
±1.7 %RH (90 … 100 %RH)
at −10 … +40 °C (−4 … 104 °F) ±(1.0 + 0.008 reading) %RH
Factory calibration uncertainty at +20 °C (+68 °F) ±0.6 %RH (0 … 40 %RH) 5)
±1.0 %RH (40 … 97 %RH) 5)
Humidity sensor HUMICAP180R
Response time at +20 °C (+68 °F) in still air with a sintered PTFE filter
63% 20 s
90% 60 s
Temperature (HMP155)
Measurement range −10 … +40 °C (+14 … +104 °F)
−10 … +20 °C (+14 … +68 °F) ±(0.176 – 0.0028 x temperature) °C
(+20 … +40 °C) (+68 … +104 °F) ±(0.07 + 0.0025 x temperature) °C
Temperature sensor Pt100 RTD Class F0.1 IEC 60751
Response time with additional temperature probe in 3 m/s air flow
63% < 20 s
90% < 35 s
1) Defined as ±2 standard deviation limits of endpoint non-linearity, hysteresis, or repeatability error
2) Defined as ±2 standard deviation limits of inaccuracy of the working standard including traceability to NIST.
3) Defined as the root sum of the squares (RSS) of endpoint non-linearity, hysteresis error, repeatability error, and calibration uncertainty at room temperature.
4) Defined as ±2 standard deviation limits of temperature dependence over the operating temperature range.
5) Defined as ±2 standard deviation limits. Small variations possible, see also calibration certificate.
Available Parameters
Pressure parameters P, P3h, HCP, QFE, QNH
Humidity and temperature parameters RH, T, Tdf, Td, x, Tw
Inputs and Outputs
MI70 probe ports 2
MI70 data interface RS-232 (accessible only with MI70
Link software)
PTB330 supply voltage 10 … 35 VDC (if not powered by MI70)
PTB330 data interface RS‑232C
PTB330 serial I/O connectors RJ45 (service port) Male 8‑pin M12
(user port)
HMP155 data interface RS‑485
HMP155 serial I/O connector Male 8‑pin M12
Mechanical Specifications
Housing material G-AlSi 10 Mg (DIN 1725)
IP rating IP65
Pressure connector M5 (10-32) internal thread
Pressure fitting Barbed fitting for 1/8 inch I.D. tubing
or quick connector with shutoff valve
for 1/8 inch hose
Housing material PC
IP rating IP66
Additional T-probe cable length 2 m (6 ft 6 in)
Cable material PUR
Sensor protection Sintered PTFE
MI70 Measurement Indicator
IP rating IP54
Housing material ABS/PC blend
Transport Case
IP rating (when closed) IP67
Plastic parts TTX01â, PP+SEBS, POM
Metal parts Stainless steel AISI303
Interior foam material Polyethylene and polyether
Weight with all instruments and typical accessories 5.9 kg (13 lb)
Exterior dimensions (L × W × H) 405 × 330 × 165 mm
(15.94 × 12.99 × 6.50 in)
Spare Parts and Accessories
MI70 – PTB330 spiral cable 223235SP
USB-RJ45 serial connection cable 219685
Serial connection cable 19446ZZ
Barbed fitting 1/8 in 19498SP
Quick connector 1/8 in 220186
Transport case with interior foams and tabletop casing for PTB330 Transport case with interior foams and
tabletop casing for PTB330
USB cable for MI70, includes MI70 Link software 219687
MI70 Link software MI70LINK
MI70 connection cable to HMT330, MMT330, DMT340, HMT100, PTB330 211339
MI70 battery pack variety of AC adapters available 26755
HMP155 – MI70 connection cable 221801
Protection set for HMP155 calibration buttons: protective cover, 2 O-rings and protective plug 221318
USB cable for HMP155 221040
Sintered teflon filter + O-ring 219452SP
Humidity sensor HUMICAP180R
Humidity calibrator HMK15


Vaisala-PTB330TS-Barometric Pressure Transfer Standard_DpstarGroup