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This is 440 Air Quality Meter with data logging manufactured by Testo. The manufacturer part number is 0563 4400. The probe is basically a hot wire, ntc, tc probe. It has about ±0.3 (-25 → +74.9 °c) °c, ±0.4 (+75 → +99.9 °c) °c, ±0.4 (-40 → -25.1 °c) °c, ±0.5 % best temperature measurement accuracy . Its air velocity resolution is 0.01m/s . The product has +1370 (temperature-tc) °c, +150 (temperature-ntc) °c maximum temperature. The given dimensions of the product include 154 x 65 x 32mm. The typical product's weight is 1.4kg. It has the best air velocity accuracy about ±5 % + 0.5 m/s (0 → 20 m/s) . While it has 440 hot wire kit of model number. It has a 0.1°c temperature measurement resolution . In addition, the height is 32mm. Furthermore, the product is 65mm wide. Its accurate length is 154mm. Its battery life is about 12 h . Moreover, it has air velocity, temperature, volume flow measurement parameters . This aa battery is comparatively much efficient than common batteries. Additionally, the maximum air velocity is 30m/s . It has a maximum operating temperature of +50°c. Whereas, the minimum operating temperature of the product is -20°c. Moreover, the product gets power from battery.
For more information please check the datasheets.
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