Mobile equipment, such as compressors, are frequently hired out for use on construction sites, road building etc. and have to withstand both the effects of the climate and that they will not always be maintained to manufacturer’s specifications. Therefore the monitoring of fuel, oil and coolant levels is crucial. For fuel levels there are the T/LL130, T/LL140 and T/LL171 continuous output sensors. For oils, both engine and hydraulic, the S82, S86 are ideal as switches for alarms whilst the coolant level can be monitored by the S81 or S85. Additional products used on such equipment are the S100 temperature switches, the PTF pressure transducers and our V of engine instruments.