非接触型双量程直流扭矩传感器

仪器简介：
Low Range Performance  High Range Performance  
Nonlinearity (end point method, % of Range)
 ≤±0.10 ≤±0.07
 
Hysteresis(% of Range)
 ≤±0.10  ≤±0.07
 
Nonrepeatability(% of Range)
 ≤±0.05  ≤±0.03 
 
Combined Error (guaranteed combined non-linearity, hysteresis and non-repeatability, % of Range)

   ≤±0.15 ≤±0.12 
 
Rotational Effect on Zero (% of Range)
 ≤±0.05 ≤±0.03 
 
Remote1 Calibration Error (% of Range @ 75 deg. F., traceable to NIST)
 ≤±0.04 ≤±0.04 
 
Temperature Effects: 
     
Zero (% of Range/deg. F.)
 ≤±0.0025  ≤±0.001 
 
Span (% of Rdg./deg. F.)
 ≤±0.0025  ≤±0.001 
 
Compensated Range
 +75 to +175 deg. F. 
Minimum Usable Range
 -25 to +185 deg. F
 
Storage Range 
 -65 to +225 deg. F. 
Outputs: Fully bi-directional, dual outputs for each range with common characteristics, as follows
    
 
Clockwise (CW) 
Torque²,³ (Volts)
 +5 standard, or +10 Option L
 
Counterclockwise (CCW) Torque²,³ (Volts)
 - 5 standard, or - 10 Option L
 
Minimum Resistive Load
 10 kΩ 
Maximum Capacitive Load 0.05 μF
 
Source Impedance
 <1Ω 
Overrange³ (% of Range) ±33 
Zero Control Range ±5% of Range, nominal 
Span Control Range ±5% of Range, nominal 
Supply Voltage5 (Volts dc)  10.5 to 24 standard, 18 to 24 Option L. 
Supply Voltage5 100 mA, nominal 
Power Supply Effect <0.01% of Range/volt 
Measurement Bandwidth4 High Frequency Output: dc to 500Hz, Low Frequency Output: dc to 1 Hz; both outputs are simultaneously available on each range
 
Output Noise (rms, % of Range) 0.10 @ 500 Hz. output, 0.02 @ 1 Hz output 


技术参数：
扭矩测量范围：22.6-678000Nm(法兰安装)；4.52-452000Nm（轴安装）
速度测量范围：0~±8000rpm(法兰安装)；0-±15000rpm(轴安装)
频率响应范围：0-500Hz
输出信号：±5V；±10V
电源：10.5-24VDC，100mA



主要特点：
790 series was developed to accurately measure torque when the ratio of peak torque to average torque is high. In that situation, a conventional torquemeter must be oversized to avoid damage – a process which greatly reduces accuracy. Conditions that create high peak to average ratios include starting, stopping or reversing inertial loads, torsional oscillations, and diesel and single cylinder engine/compressor drives. Additionally, when peak torques are unknown, an 790 reduces the risk of damage from unexpected or accidental torque spikes.

An 790 can accurately measure low running torque and high transient spikes without the expense of using several conventional sensors. Furthermore, these products are hardened to the intense electromagnetic interference (EMI) often generated by modern, IGBT-based adjustable speed drives/controls.

These torquemeters use patented technology newly refined to achieve 790 performance. Rotary transformers connect torque sensing strain gages to stationary circuitry without contact. Transformers don't generate noise or wear. They are immune to noise, dirt and lubricants and provide long, maintenance-free life. Unlike ferrite transformers, robust, non-ferrite design isn’t susceptible to cracking and impact damage. 790 sensors are suitable for diesel service and other hostile environments.

RFI shielded circuitry, improved EMI tolerance, and the high level output with low source impedance further enhance noise immunity. Simple cabling yields calibration and balance truly free of cable effects. There are no slip rings, brushes, radio transmitters or other limited-life, noise-generating elements.