济宁东宏机械设备有限公司
Jining Donghong Machinery Co., Ltd
Quality supplier of drilling rig parts for Bomco,Lanzhou LS, Honghua, Sj petro, Rg Petro, Beijing BPM, Shenkai, Kingdream, CCDC

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SK-8N02 Tension Pulley Type Rotary Torque Sensor 
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Point offset: 0.0
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SK-8N02 Tension Pulley Type Rotary Torque Sensor


During drilling, the diesel engine, through a serials of driving gears, drives the drawworks and the rotary table through driving chains; at the same time, the rotary table drives the drilling tools, thus realizing drilling. The tightness of driving chains can correspond to the torque of rotary table. When abnormity occurs to downhole drilling tools or the lithology of formation changes, the torque of rotary table will change, thus influencing the variance of tensioning force of the chain. Based on this theory, install a stretching pulley type table torque sensor beneath the drilling chain. The sensor converts the tensioning force of the chain into oil pressure; then a pressure sensor converts the outputted oil pressure signals into electrical signals. The intensity of electrical signal reflects changes in driving torque of rotary table. Electrical signal is transmitted to the secondary instrument or computer interface to display and acquire information on driving torque of the rotary table.


●   Working Voltage : 24VDC

●   Output Signal: 4~20mA

●   Working Temp: -30℃~80℃

●   Range of Output Hydraulic Signal: 0~870psi

●   Tension Pulley OD: φ305mm

●   Nonlinear error: ≤0.5%

●   Explosion-proof Grade: ExiaIICT5

●   Protection Class: IP65