Profile: Beijing ConST Instrument Technology Inc. is a manufacturer of calibration and measuring instruments. We are an ISO 9001:2008 certified company. We offer a wide range of industries such as oil & gas, metal, mining, power, energy, aviation, automotive, manufacturing and calibration laboratories. ConST811 is a revolution in pressure calibration technology for the process industries. It is a compact, light weight calibrator that generates from 90% vacuum to 375 PSI (25bar) using a high performance integral electric pump. CONST 211 series digital pressure gauges provide an accurate, reliable, and economic solution for wide range of pressure applications. They are loaded with functionality and remarkably easy to use. CONST 318A is an ultra-compact, rugged, and ease-to-use hand-held device for sourcing, simulating and measuring pressure, temperature, & electrical signals. It is a smartphone-like menu and interface make the operation simpler & easier. The internal cold junction compensation sensor can be re-calibrated easily. ConST 186 hydraulic ultra-high pressure pump is a hand operated pressure pump designed to generate pressure up to 37,500 psi (2500 bar).