Table 1 Overview of environmental monitoring plan and sensor specifications

From: Tomb murals conservation in humid regions: hybrid passive-active systems for salt crystallization and condensation mitigation

Location

Monitoring details

Parameter

Sensor/range (accuracy)

Outdoor

5.0 m above ground, Oct. 2020–Dec. 2022; measured every 30 min

Air temperature and relative humidity

HOBO MX2301 (USA); Temperature: -40–70 °C (±0.2–0.25 °C); RH: 10%–90% (±2.5%), <10% or >90% (±5%)

Indoor

3.0 m in three chambers and 0.1 m in back chamber (Oct. 2020–Dec. 2022); 0.1 m in front and middle chambers (Oct. 2021–Dec. 2022); measured every 30 min

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