The new heat flow meter HFM (Heat Flux Meter) performs measurements according to ISO 9869 (Thermal insulation - Building elements - In-situ measurement of thermal resistance and thermal trasmittance). The new heat flow meter HFM, manufactured in Italy by Extratech Instruments, uses wireless technology with high capacity customization. Now U-value measure is very simple. We ensure economic heat flow, configured from only two temperature probes and one probe of the thermal flow, up to more complex configurations The temperature probes may be single (a probe on a wireless transmitter) for more precise measurements or coupled (two probes on only one wireless transmitter) as most of the heat flow meter currently on the market in the world Features: - HFM by using the PT1000 provides a drastic reduction of error in the measurement compared to the solutions currently on the market that use simple cables with PT100 sensor-datalogger several meters in length. - High customizable system. - Economic implementation of two simultaneous measurement points (such as a slab and a wall, or two walls) for the reduction of the time of diagnosis. - High customizable software for biggest customer satisfaction. - Question of the probes and evaluation of the eventual extension of the measures without the need to disconnect the probes or discontinue the measures. Typical kit: Wireless unit for temperature probes, flow plate, PT1000 contact temperature sensors, Thermal flow plates depending on demand, n.1 Datalogger management software n.1 U-value, processing and calculation software n.1 Briefcase
Technical specifications
General:
• Manageable units: Unlimited • Internal Memory: 4Gb Micro SD Card • Protection: IP 67 • Operating temperature: -40°C to +85°C • No. 1 Lithium Ion Batteries (included) • typical battery life: up to 3 years at 25°C with sampling every 10 minutes
Acquisition of data:
• Recording intervals: selectable by software
• Clock: Built-in
• Recording media: Internal memory
• Data format: CSV
Data transmission: • frequency: ISM 868/915 Mhz • free field flow rate: 800m
Surface temperature sensor:
• PT1000 class A
• measuring range from -20°C to +150°C ( ±15% IEC 751)
• with 3 m cable
Heat Flow plate:
• Sensitivity (nominal): 50 μV/ Wm²
• Operating range: -30°C to +70°C
• Thermal resistance of the sensor: <6,25 10-3 m²K/W
• range: +2000 to -2000 Wm²
Precio HFM
Extratech ...engineering measures
Sito aggiornato il 21-ott-2021
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