The VK series are non contact type eddy current sensors Displacement vibration sensors designed for rotating machinery such as compressors and power plant turbines. Model VK-A is a standard vibration transducerthat confirms to API 670 Std 4th Edition. Model VK-P is available for measurement of differential expansion, which is indespensible for monitoring of large turbines. The VK-R series is available for power generating gas turbines which require long cable length.