SHT71 - Sensirion

SHT71 Frequently Asked Questions (FAQs)

• What is the recommended reflow soldering profile for SHT71?
  Sensirion recommends a reflow soldering profile with a peak temperature of 260°C, a dwell time above 220°C of 30-60 seconds, and a cooling rate of 4°C/s.
• How do I handle the SHT71's humidity sensor to avoid contamination?
  Handle the SHT71 by the edges, avoid touching the sensor opening, and store the device in a clean, dry environment to prevent contamination.
• What is the recommended wire length and type for connecting the SHT71?
  Use a wire length of up to 10 cm (4 inches) and a wire type with a diameter of 0.2-0.5 mm (AWG 24-20) to minimize signal degradation.
• How do I calibrate the SHT71 humidity sensor?
  The SHT71 is calibrated during manufacturing, but you can perform a one-point calibration by exposing the sensor to a known humidity level (e.g., 75% RH) and adjusting the output accordingly.
• What is the SHT71's response time to changes in humidity and temperature?
  The SHT71's response time is typically 4-10 seconds for humidity and 1-2 seconds for temperature, depending on the measurement frequency and environmental conditions.