HK-711 Series Rotary Torque Sensor 

 A range of applications: 
 1, motor, engine, internal combustion engines and other rotating torque and power output of power equipment testing; 
 2, fans, pumps, gear boxes, torque wrench the torque and power of detection; 
 3, locomotives, automobiles, tractors, aircraft, ships, mining machinery in the detection of the torque and power; 
 4, can be used for sewage treatment systems in the detection of the torque and power; 
 5, can be used in the manufacture viscometer; 
 6, can be used for process industries and process industries. 
 Second, the basic principle: 
 Torque measurement: Electrical Measurement by strain gauge technology, the composition of the elastic strain axis bridge, the bridge to provide power to the strain of the flexible shaft can be measured by the twisting of the electrical signals. The strain signal amplification, after pressure / frequency conversion, and twisted into a frequency signal proportional to strain. Figure 1: 
 Third, the product features: 
 1. Signal output waveform can be arbitrarily chosen ─ square wave or pulse wave. 
 2. Detection of high precision, good stability, strong anti-interference. 
 3. No zero adjustment can be repeated; continuous measurement of positive and negative torque. 
 4. To measure the static torque, but also measure dynamic torque. 
 5. Small size, weight sensors can be used independently from the secondary instrument, as long as the socket pin number provided by +15 V,-15V (200mA) power, and torque is proportional to the output impedance of the other square wave or pulse wave frequency signal . Lightweight, easy to install. 
 6. Measuring range: 5Nm-150000Nm optional, non-standard can be customized. 
 Fourth, the main function and performance indicators: 
 Torque Indication error: <± 0.5% F · S Sensitivity: 1 ± 0.2 mv / V 
 Nonlinearity: <± 0.25% F · S Repeatability: <± 0.2% F · S 
 Backlash: <0.2% F · S Zero drift: <0.5% F · S 
 Zero drift: <0.5% F · S / 10 ℃ Output Impedance: 1KΩ ± 3Ω 
 Insulation Resistance:> 500MΩ static overload: 120% 
 Breaking load: 200% Temperature: 0 ~ 60 ℃ 
 Storage temperature: -20 ~ 70 ℃ Power supply voltage: +15 V ± 5%,-15V ± 5% 
 The total current consumption: <130mA frequency signal output: 5KHz-15KHz 
 Negative rated torque: 5KHz ± 10Hz zero torque: 10KHz ± 10Hz 
 Is rated torque: 15KHz ± 10Hz signal duty cycle: (50 ± 10)% 

 Wholesale price with complete instrumentation, including a special display. For 4 to 20 mA output, 12 mA zero torque output, 4 and 20 mA maximum output value for the positive and negative torque; for 5khz to 15khz output type, 10KHZ zero torque output, 5khz and 15khz is positive maximum output value of the anti-torque