Torque sensor is a kind of pre-component in the measurement system, which converts the physical torque of the rotating part into an electrical signal that can be measured, which is an important part of the sensing system and the first gate of the measured signal input.
A special torsional strain gauge is pasted on a special elastic shaft and a bridge is formed, which is the basic torque sensor.
Fixed on the elastic shaft are:
Secondary coils for energy toroidal transformers.
Signal toroidal transformer primary coil.
The on-axis printed circuit board contains a rectifier stabilized power supply, an amplification circuit, a V-F conversion circuit, and a signal output circuit.
In the housing of the sensor is fixed with:
Excitation circuits. Primary coil (input) of an energy toroidal transformer
Signal toroidal transformer secondary coil (output).
Signal processing circuits.
When the tachymeter disc rotates continuously, the pulse signal with a certain period width is output through the photoelectric switch, and the corresponding speed can be calculated according to the number of teeth of the disc and the frequency of the output signal. Rotary encoders are used for low-speed measurements and can be used for angular measurements.
Torque sensors are used to measure and control torque, speed, power and other data in mechanical systems.
1. Power measurement and control.
Motor. Internal combustion engine.
Mixer. Compressor.
Hydraulic power. Pneumatic power.
Actuators, other rotational power.
2. Load measurement and control.
Valve. Pumps.
Steering gear. Propeller.
Buttoning machine. Gearbox.
Hydraulic drill pipes, hydraulic tools.
Hand and power tools.
material strength, fatigue and failure, etc.
m (torque) = p (power) * 9550 (constant factor) n (rated speed).
m (torque) unit: nm (Newton. m).
p (power) unit: kw (kilowatts).
n (rated speed) unit: r min (revolutions).
The principle of elastic strain measurement technology is adopted.
The signal and power supply are transmitted in a non-contact way, without slip rings or brushes.
Forward and negative moments can be measured without zeroing and commutation.
The signal adopts the frequency output mode, which has a high signal-to-noise ratio and good anti-interference.
Fast response, can measure the starting torque, but also can measure the transition process torque.
It is not limited by the speed and can accurately measure real-time torque and power.
The sensor has good linearity, repeatability, high reliability and strong anti-interference ability.
The sensor has a compact structure, small size and light weight, and is widely used in a variety of high-quality test and industrial control systems.
Torque Standard Input Signal:
Frequency signal output: 5V
Zero torque frequency output: 10kHz
Forward torque full-scale frequency output: 15kHz
Reverse torque full-scale frequency output: 5kHz
Rotational speed standard output signal.
Frequency signal output: 5V
The number of pulses depends on the number of teeth of the sensor tachymeter disc or the number of encoders of the encoder.
Number of output pulses per revolution: 60 3600 pulses (can be output in phase A and B, phase difference 90°).
Other signal options.
The amplitude of the sensor output signal can be increased to 24V (NPN PNP optional).
The frequency signal output by the sensor is converted to F V and F i (analog voltage and analog current are optional).
Serial bus mode: RS232, RS485 optional.
It can be installed horizontally or vertically.
Rigid or flexible couplings can be used for horizontal installation, and the couplings should be close to the shoulders at both ends of the sensor.
1. Vertical installation.
2. Horizontal installation.
It is strictly forbidden to directly and vigorously knock and collide with the output shaft at both ends of the sensor during installation, and do not operate with electricity.
When the weight of the sensor horizontally mounted coupling is large, a bearing bracket should be installed at the coupling part to avoid the sensor from bearing bending moment force.
In the vibration is large or the coaxiality is less than 0In the case of 05mm, flexible connection is selected, and the base and base must be fixed firmly.
In the case of good installation conditions and high measurement accuracy, a rigid connection is selected, and the base and the base must be fixed firmly.
The installation bottom table should have a certain strength to ensure the stability of the installation and avoid excessive vibration.
This sensor is non-waterproof and explosion-proof design, please pay attention when using it (if there are such special requirements, it can be customized).
Confirm that the sensor is well grounded in the system, and shield and isolate signals that may interfere with each other.
ZH07-A series.
ZH07-G series.
ZH07-X series.
ZH07-H series.
ZH07-n series.
ZH07-F series.