VAISALA PTB330 Digital Barometer

Measurement performance

Barometric pressure range 500 ~ 1100 hPA

Linearity: ±0.05 hPa (Class A)

Hysteresis: ±0.03 hPa (Class A)

Repeatability: ±0.03 hPa(Class A)

Calibration uncertainty: ±0.07 hPa(Class A)

Accuracy at +20 °C (+68 °F): ±0.10 hPa(Class A)

Temperature dependence

500 ~ 1100 hPa, ±0.1 hPa (Class A)

50 ~ 1100 hPa ±0.3 hPa (Class A)

Total accuracy −40 ~ +60 °C (−40 ~ +140 °F)

500 ~ 1100 hPa: ±0.15 hPa (Class A)

Long-term stability

500 ~ 1100 hPa: ±0.1 hPa/year (Class A)

50 ~ 1100 hPa: ±0.2 hPa/year (Class A)

Miscellaneous

Pressure units: hPa, mbar, kPa, Pa inHg, mmH20, mmHg, torr, psia (Class A)

Resolution:  0.01 hPa (Class A)

Settling time at startup (1 sensor): 4 s (Class A)

Response time (1 sensor): 2 s(Class A)

Inputs and outputs

Supply voltage: 10 ~ 35 V DC

Supply voltage sensitivity: Negligible

Typical power consumption at +20 °C (+68 °F) (voltage at 24 V DC with 1 pressure sensor):

RS‑232: 25 mA

RS‑485: 40 mA

Output voltage Uout: 25 mA

Output current Iout: 40 mA

Display and backlight: +20 mA

Serial communication: RS-232, RS‑485, RS‑422

Analog output (optional)

Current output: 0 ~ 20 mA, 4 ~ 20 mA

Voltage output: 0 ~ 1 V, 0 ~ 5 V, 0 ~ 10 V

Accuracy at pressure range

500 ~ 1100 hPa/ 50 ~ 1100 hPa

At +20 °C (+68 °F): ±0.30 hPa/ ±0.40 hPa

At −40 … +60 °C(−40 … 140 °F): ±0.60 hPa/ ±0.75 hPa

Operating environment

Pressure range: 500 ~ 1100 hPa, 50 ~ 1100 hPa

Operating temperature: −40 ~ +60 °C (−40 ~ +140 °F)

Operating temperature with local display: 0 ~ +60 °C (+32 ~ +140 °F)