Aneroid barometer is based on a deformable element for sensing atmospheric pressure measuring instruments. It is easy to carry, accurate measurement aneroid barometer use a wide load range, easy maintenance, no mercury pollution, etc., are widely used in meteorology, military, aviation, marine, agriculture, surveying, geology, industrial and mining enterprises and research and other fields, as conventional instruments to measure atmospheric pressure. Technical performance and specifications measuring range: 800 ~ 1064hpa temperature range: -10 ~ + 40 ℃ after temperature, after being shown the degree and supplementary measurement error is less than the minimum score 2.0hpa dial shows: 1hpa attached table minimum temperature value : 1 ℃ Instrument weight of not more than 1.5Kg Instrument Size 156mm * 156mm * 115mm Sound Level Meter works: the microphone converts sound into electrical signals, and then by the pre-amplifier impedance conversion so that the microphone attenuator match. Amplifier output signal to network aneroid barometer horizontal use, the signal frequency weighting (or external filter), and then by the attenuator and amplifier amplifies the signal to a certain amplitude to RMS detector . DYM3 aneroid barometer aneroid barometer _ _ provided by the Branch of the Instrument Instrument Co., Ltd. Qingdao Branch. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) strong, credible, in Qingdao, Shandong analytical instruments industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinke instrument into the brilliant and you work for a better future!