How long does it take for the humidity sensor to stabilize

Ruuvi products 🇬🇧 RuuviTag & RuuviTag Pro sensors
1

Approximately how long does it take for humidity sensor readings to stabilize when moving to a new location with around 10 degrees difference in celcius?
When I can really trust the readings?

Product is White RuuviTag

2

Hello @jaape ,

Thanks for your message! We have included information about sensor measurement delay on our support page here.

Delay times listed here depending on your sensor model and with or without protective case:

RuuviTags step time (0°C->20°C) in a free air:

  • Only sensor chip: Sensirion SHTC3: 1 Ï„ (tau) 63% = ~8s, 5 Ï„ (tau) ~99% = ~40s
  • External sensor board with TMP117 temperature sensor (RuuviTag Pro with external TMP117 sensor): 1 Ï„ (tau) 63% = 162 s (2 min 42 s)
  • RuuviTag without enclosure (circuit board+battery): 1 Ï„ (tau) 63 = 586 s ( 9 min 46 s)
  • Standard white RuuviTag 4in1 SHTC3: 1 Ï„ (tau) 63% = 674 s ( 11 min 14 s) (note that top enclosure doesn’t reduce time very much)
  • RuuviTag Pro 2in1 or 3in1: 1 Ï„ (tau) 63% = 910 s (15 min 10 s)