AST Humidity and Temperature Sensor, HTU21P(F)
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HTU20PF

Series: HTU21P(F) Humidity & Temperature Sensor Brand: American Sensor Technologies Inc
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AST Humidity and Temperature Sensor, HTU21P(F)
  • Accuracy - ± 5% RH Tolerance at 55% RH
  • Output - PWM Interface, Analog Output
  • Filter - With Embedded PTFE Filter

Specifications

Brand

Accuracy

  • ± 0.3° C (± 0.54° F) Typical - Temperature Accuracy at 25° C (77° F)

Approvals & Certifications

  • RoHS

Communication

  • I²C
  • PWM Interface, Analog Output

Current

  • -10 to 10 mA - Input Current on Any Pin
  • 14 µA, Max.
  • 5 µA Typical - Current Consumption

Dissipation

  • 15 µW Typical
  • 50 µW, Max.

Environmental Protection

  • IP67

Frequency

  • 108 to 132 Hz - PWM Frequency, 120 Hz Typical
  • 2 Hz - Measurement Frequency

Humidity

  • ± 2 % RH - Relative Humidity Accuracy at 25° C (77° F) (10 to 95 % RH)
  • 0 to 100 % RH

Hysteresis

  • ± 1 % RH Typical - Humidity Hysteresis

Operating Temperature

  • -40° to 125° C (-40° to 257° F)

Recovery Time

  • Relative Humidity: 10 seconds Typical after 150 Hours of Condensation

Resolution

  • 0.01° C Typical - for 12-bits
  • 0.04 % RH Typical - for 10-bits

Response Time

  • Relative Humidity: 5 seconds Typical, 10 seconds, Max.
  • Temperature: 10 seconds Typical (At 63 % of Signal) from 15° to 45° C (59° to 113° F) at 1 m/sec Air Flow

Storage Temperature

  • -40° to 125° C (-40° to 257° F)

Supply Voltage

  • -0.3 to 3.6 Vdc - Vdd to Ground
  • -0.3 to Vdd + 0.3 Vdc - Digital I/O Pins (DATA / SCK) to Vdd
  • 1.5-3.6 Vdc, 3.0 Vdc Typical
  • 3.8 Vdc - Peak

Temperature Effect

  • -0.15 % RH/°C - Temperature Coefficient from 0° to 80° C (32° to 176° F)

Thermal Drift

  • 0.04° C/Year - Long Term Drift
  • -0.07 to -0.12 Hz/°C - Temperature Drift of PWM Frequency
  • 0.5 % RH/Year - Long Term Drift

Tolerance

  • ± 3 % RH Tolerance at 55 % RH - Humidity Accuracy
  • ± 5 % RH Tolerance at 55 % RH - Humidity Accuracy

Documentation

Data Sheets

View Product Series

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