ICT International HFM1, Руководство пользователя

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11. General theory of the measurement
The HFM1 provides
The ISO and ASTM standards for:
ISO 9869: Thermal insulation – Building elements - In-situ measurement of thermal
resistance and thermal transmittance.
ASTM C 1155 – 95 (Reapproved 2001)
Standard Practice for Determining Thermal Resistance of Building Envelope
Components from the In-Situ Data
ASTM C 1046 – 95 (Reapproved 2001)
Standard Practice for In-Situ Measurement of Heat Flux and Temperature on
Building Envelope Components
TR = ΔT / Φ (1.1)
The ISO and ASTM standards on the subject comment on applicability of the
method, on installation and on data analysis.
The HFM1 consists of high accuracy electronics (measurement accuracy up to
±1 microvolt) as well as matched thermistor pairs to make a differential
temperature measurement with a total accuracy of better than 0.5°C. HFP01 is the
world ' s most popular sensor for heat flux measurement through building envelopes.
The user of the HFM1 is supposed to work according to the relevant standards and
perform data analysis in accordance with these standards.
Enabling better research outcomes in soil, plant & environmental monitoring. 24