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› Monitoring<br />

68<br />

A5000MAW<br />

SUPPORTED INVESTIGATION<br />

Measure of conduttance<br />

A5000MAW thermo-flow meter for heat<br />

transmission measurements on site<br />

stands out for utmost accuracy in data<br />

acquisition (24-bit resolution) combined<br />

to the great versatility and simplicity of<br />

use. Through the use of four probes to<br />

measure contact temperature and a flow<br />

plate connected wirelessly to A5000MAW<br />

central unit (connection through remote,<br />

totally independent data acquisition and<br />

transmission unit), the instrument takes<br />

the measurement of the heat transmission<br />

values on site of the opaque walls of<br />

entire buildings, as requested by recent<br />

laws on energy efficiency. The data acquisition<br />

device is equipped with graphic<br />

display for the real time visualization<br />

of the trend of the data acquired, keyboard<br />

with charge-transfer technology<br />

and removable S.D. memory for storing<br />

and following elaboration of the measurements<br />

acquired. The recording methods<br />

can be set using the software in an<br />

easy and quick manner, to carry out surveys<br />

with utmost accuracy and simplicity.<br />

A5000MAW thermo-flow meter is envisaged<br />

to carry out medium and long-term<br />

surveys and is suitable to measure environmental<br />

parameters on site and in the<br />

laboratory. The unit can also manage up<br />

to two optional couples of remote transmitting<br />

units MW-1; MW-2 so as to record<br />

the heat transmission parameters in 3<br />

different measurement areas of a building,<br />

at the same time. The data acquired<br />

is downloaded on PC and elaborated with<br />

(GT LAB) software for the direct calculation<br />

of coefficient K (heat transmission)<br />

and of the parameters linked to the thermal<br />

insulation of the building, through<br />

the progressive average method. The instrument<br />

complies with ISO 9869 standard.<br />

Fields of use: Acquisition of environmental<br />

parameters on existing buildings (prior<br />

to restructuring activities) in order to determine<br />

the actual insulation need which<br />

falls within the parameters set forth by<br />

law, and on new buildings (after restructuring<br />

activities) to evaluate the quality<br />

of the work performed.<br />

SPECIFICATIONS<br />

Recording:<br />

• Recording intervals: from 10 seconds to 12<br />

hours<br />

• Watch: integrated with buffer battery<br />

• Recording support: removable SD memory<br />

up to 2 GB<br />

• Data format: TSV, BMP<br />

• Measurement type: relative or absolute<br />

Thermometers:<br />

• Total number: 4<br />

• Temperature range: -40 - +110°C,<br />

• Precision: ±0.2°C<br />

Thermo-flow plate:<br />

• Sensitivity: 50μV/Wm2 (typical)<br />

• Temperature range: -30 - +70°C<br />

• Diameter: 80mm<br />

• Thickness: 5mm<br />

• Measured flow: bidirectional<br />

Radio:<br />

• Frequency: 2.4GHz<br />

• Transmission power: 0dBm (14dBm upon<br />

request)<br />

• Receiver’s sensibility: –96dBm<br />

• Protocol: IEEE802.15.4<br />

• Exposed capacity: 300m (1000m with power<br />

14dBm)<br />

• Capacity in buildings: 40m<br />

WLS-1 modules for connecting to sensors:<br />

• Transmission power: 0dBm (14dBm upon<br />

request)<br />

• Converters’ resolution: 24 bit<br />

• Maximum distortion: 0.0005%<br />

• Maximum sampling: 0.5Hz<br />

• Maximum range of inlet signal: 0-2.5V<br />

• Channels: 2 for MW-2, 3 for MW-3<br />

• Power supply: independent, with batteries<br />

AA type rechargeable and replaceable<br />

(7.2V – 2.5Ah)<br />

• Operative autonomy: 10 days<br />

General data:<br />

• Keyboard: 24 charge-transfer buttons<br />

• Display: mono-chromatic graphic LCD 320 x<br />

240 pixel<br />

• Measures display: numeric and graphic<br />

• Instrument’s power supply: batteries AA<br />

type rechargeable and replaceable (12V –<br />

2.5Ah). Envisaged for external power supply<br />

• Typical consumption: 40mA monitor off -<br />

90mA monitor on<br />

• Container: anti-crash, in copolymers of polypropylene<br />

• Operating temperature: 0-60°C<br />

• Sizes and weight: L. 270 x H. 120 x P. 246<br />

mm, 3 Kg<br />

mae-srl.it/go/A5000MAW

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