Model 725F High Gauge Pressure Transducers Description Model 725F pressure transducer is specially designed for hydraulic chocks of longwall mining machines for underground mining. The automatic hydraulic chocks work as the powered roof support which allows shearers to work more efficiently and safely beneath the roof. This model 725F is used to control and monitor the high pressure of the hydraulic system of chocks, so that the chocks can be positioned correctly. In mining applications, the transducers must resist both vibration and mechanical shock. To meet this requirement, the model 725F transducer has its pressure diaphragm and sensor body made from one piece of stainless steel, i.e., the sensor part of 725F-series transducers possesses monoblock structure. This structure also eliminate the O-ring being integrated inside the sensor body to seal the pressure medium. As a result, the model 725F offers not only excellent resistance to both vibration and mechanical shock, but also excellent reliability. As one of the 700F-series high pressure transducers and transmitters, the model 725F makes use of metal foil strain gauges from BCM SENSOR in order to form its Wheatstone bridge circuit. One of the advantages of using the metal foil strain gauges is that all the 700F-series possesses the lowest temperature effect, compared to all the other pressure transducers and transmitters from BCM SENSOR. Last but not least, the 725F transducer features a quick connector of M8x1 female thread, which is especially developed for a convenient and reliable process connection. Features • rugged mono-block structure • measuring ranges: 400bar, ..., 5000bar • reliable metal foil strain gauge technology • accuracy up to 0.5%fs • compensated temperature range: -20 ~ +85°C • excited by either constant voltage or current source Applications • hydraulic chocks of longwall mining machines • hydraulic percussion drill machines • high pressure control systems BCM SENSOR TECHNOLOGIES BVBA Industriepark Zone 4, Brechtsebaan 2 B-2900 Schoten - Antwerpen, BELGIUM website: www.bcmsensor.com email: [email protected]

Model 725F High Gauge Pressure Transducers Dimensions Electrical Interface excitation + (red) signal + (green) excitation - (black) signal - (white) BCM SENSOR TECHNOLOGIES BVBA Industriepark Zone 4, Brechtsebaan 2 website: www.bcmsensor.com B-2900 Schoten - Antwerpen, BELGIUM email: [email protected]

SENSOR Technical Data Parameters General conditions for measurements: media temp. = 25°C ±1°C, ambient temp. = 25°C ±1°C, humidity = 50%RH ±10%RH, barometric pressure: 86~106 kPa, vibration = 0.1 g (1m/s/s) max. Notes: 1. The pressure medium should be compatible with wetted parts material and pressure diaphragm. 2. For customized pressure ranges, consult BCM. 3. “fs” refers to full scale pressure or rated pressure. 6. Calculated as a rate of output change between -20°C and +85°C, and normalized by the output at 25°C, when the sensor is not temperature compensated. 7. Response time for a 0 bar...

SENSOR Ordering Information Iposition (pos.) 1: model 725F |pos. 2: pressure ranges and references 400bar G 2500bar G G: gauge pressure pos. 3: output signal 2mV/V (standard) pos. 4: accuracy_ Ipos. 5: bridge resistance I 350Q 500Q (standard) 1000Q 2000Q QCM8: quick connector with M8x1 female thread Examples of Ordering Code standard sensor: 725F-1000barG-2mV/V-1%fs-500Q-QCM8-FW customized sensor: 725F-1000barG-2mV/V-1%fs-500Q-QCM8-FW(200mm)-(*) (*): Customized wire length = 200mm. The listed specifications and dimensions are subject to change without prior notice. BCM SENSOR TECHNOLOGIES BVBA...