Disclosed herein are systems and methods configured for real-time multi-parameter monitoring of fluid systems associated with metal-working equipment. The disclosed fluid monitoring systems are configured to acquire in real time multiple parameters associated with the well-being of fluid systems of metal-working equipment. The data acquired in real-time can also be provided to remote devices to allow off-site personnel to monitor metal-working equipment. The fluid monitoring systems can also include fluorescence probes configured to determine fluid concentration and/or soil load values using fluorescence. The fluorescence probes can provide excitation light and detect emission light forming a small angle with respect to one another, emission light coming from a surface of the metal-working fluid.
