Check the listing for details. Black White Transmission Density Meter Densitometer NDT Instrument 0 to 4.5D. Condition: New. Listed at 735.00 USD. Black White Transmission Density Meter Densitometer NDT Instrument 0 to 4.5D Introduction:▷This portable black-and-white transmittance densitometer can measure both density value and density difference value. The densitometer uses a high stability light source, uses a special light head structure, and uses high precision detection technology in the circuit part, which greatly improves the ability of resisting light and electric interference. Improving the Measuring Accuracy of the Instrument by Special Fitting Technology. The newly added viewing area can facilitate users to locate the checkpoint and measurement point accurately. The instrument adopts metal shell, which can effectively shield the external electromagnetic interference and ensure the stability of the instrument.▷This device can measure the transmission density within 4.5D, which also has reference value greater than 4.5D.It is an ideal instrument for X-ray quality analysis of pressure vessels, hulls, chemical industry, bridges, hospitals, etc.Technique parameter:1∷ Measure range:0～4.5D2∷ Measure area:ф2mm（Optical aperture diameter）3∷ Repetitive error:±0.01D4∷ Deviation:(0.00D～3.00D)±0.02D(3.00D～4.50D)±0.03D5∷ Display:Decode Screen Display6∷ Adapter:8.4V--1000mA7∷ Battery:2.2Ah8∷ Recharge time:≤ 2h9∷ Standby time:≥ 24h（In fact 28h）10∷ Working time:≥ 4h（In fact 5h）11∷ Consumptio:≤ 4W12∷ Working environment:0～40℃ humdity≤ 85%13∷ Size:51×21×42cm14∷ Weight:3.5KgMeasurement Principle:▷It is an instrument for measuring the amount of light passing through the tested sample to determine the amount of light absorbed by the surface. It mainly consists of illumination system, light acquisition and measurement system and signal processing system. The stable optical signal is converted into electrical signal, and the signal is processed and sent to the processor. Finally, the density of the tested sample is displayed on the screen.Accessory:1.Adapter2.Standard density tablets3.Instrument4.Warranty card5.Certificate of inspection/quality