Technical parameters Instrument level: 0.01 pH measurement range: 0.00-14.00pH pH measurement accuracy: ± 0.01pH mV measuring range: 0 ~ ± 1999mV (automatic display polarity) mV Accuracy: ± 2 mV input impedance electronic unit: ≥1 × 1012Ω electronic unit stability: ≤0.01pH / 3 小时 Universal Technical Parameters Instrument Dimensions: 210 × 205 × 65mm (length × width × height) Power Requirements: 9V power supply to use electronic scales, 350Ma Instrument Weight: 1.5kg environmental requirements Ambient temperature: 5-40 ℃ Relative humidity: <80% non-magnetic interference surrounding instruments electronic scales, electronic scales no significant source using the function folding electronic scales using modern sensor technology, electronics and computer technology integration of electronic weighing device, in order to meet and solve real-life's "fast, accurate, continuous, automatic" weighing requirements, while effectively eliminating human error electronic scales balance scale, making it more in line with the requirements of legal metrology applications management and industrial process control . Electronic scale works in electronic components electronic scales weighing sensor function, amplifier, AD converter circuit, microcontroller circuit, display circuit, keyboard circuit, communications interface circuits, power supply circuits and other circuits. Electronic scale counting function, Jinke instrumentation (certified), electronic scales provided by the Instrument Co., Ltd. Qingdao Branch. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is Qingdao, a leader in analytical instruments, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Branch of the Instrument in leadership with the staff warmly welcome all inquiries negotiations to create Branch instrumentation a better future.