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Gill Sensors developed a heavy-duty transmission oil level sensor, which has been ATEX approved for use in hazardous area mining applications. The sensor has been custom designed for installation into the gearbox of the ranging arm on a large continuous mining coal shearing machine.
The intrinsically safe level sensor carries ATEX Ex I M2 and IECEx Ex ia I Mb approval, for de-energised operation within a methane environment (specific to mining).
The sensor uses proven capacitive measurement technology as used in other Gill liquid level sensors, giving a continuous output over the full depth of the transmission oil reservoir in real-time, giving the operator full vision of the level remaining.
With full stainless-steel construction and a heavy-duty construction, the sensor was designed to offer reliable operation in the harsh, dusty, high vibration environments encountered in this type of operation. As with all electronic equipment for use in underground mines, the level sensor was required to pass stringent electrical tests in order to gain Intrinsically Safe approval.