Zero drift is an important indicator that affects the function of the pressure sensor, so when the problem is presented, we should pay attention to it, so what is zero drift? Zero drift refers to the phenomenon that when the input signal of the expansion circuit is zero, due to the influence of temperature changes, unstable power supply voltage and other factors, the static operation point changes, and is gradually expanded and transmitted, resulting in the voltage at the output end of the circuit violating the original fixed value and drifting up and down. What are the dangers of zero drift? If the drift is severe, the effective signal will be drowned and the expansion circuit will not work properly. Therefore, we must find out the cause of the zero drift and prevent it from happening again. So what are the causes of sensor zero drift?
1. There are bubbles or impurities in the adhesive layer of the strain gauge;
Second, the function of the adhesive layer of the strain gauge itself is unstable;
3. There are virtual solder joints in the circuit;
Fourth, the stress relief of elastomers is incomplete.
In addition to the above four reasons, there are other factors, such as magnetic field, temperature, and frequency.
Internationally, it is believed that the zero thermal drift only depends on the inequality of the force sensitive resistor and its temperature nonlinearity, but in fact, the zero thermal drift is also related to the reverse leakage of the force resistor. In this regard, polysilicon can absorb heavy metal impurities from the substrate, thereby reducing the reverse leakage of the force-sensitive resistor, improving the zero thermal drift, and improving the functionality of the sensor.
|
More on that
|
Sensor technology boosts the development of the robotics industry – Turck
Since the beginning of the 60s, China has made great progress in the research and development, design, production, and reliability improvement of sensors after the national research and development from the "Sixth Five-Year Plan" to the "Ninth Five-Year Plan", and has initially formed a system of sensor research, development, production and use.
|
|
Turck's newer, faster I0-Link encoder
Turck's encoder series has been strategically expanded even further. We can now consider our customers to offer newer and faster encoders with IO-link interfaces.
Expansion of the product range
As part of Turck's product range ...
|
|
Turck's safety inductive sensors
In addition to this new sensor series, Turck's safety technology portfolio also includes safety I/O modules. Thanks to the inclusion of an OSSD output, this safety inductive sensor series provides wear-free detection, safe orientation and range monitoring without the need for a separate device ...
|
|
Triangulation principle for photoelectric sensors – Turck sensors
So what is right and wrong color aberration? To put it simply, it is an ordinary diffuse reflex sensor, for example, if you set punctuality to learn a black object, assuming that the sensing interval of the black object is set to 50 mm, then when the sensor detects a white object, the practical action interval may reach 80 mm, which ...
|
|
Detection of load cell damage – Turck
1. Observe whether the appearance of the sensor is deformed and cracked. If this happens, contact the sensor manufacturer to replace the sensor.
2. Find the sensor connection terminal of the weighing controller (weigher) and measure the sensor connection circuit.
In general, the excitation voltages (EXC+ and EX...
|
|
Two ways of movement of displacement sensors – Turck
There are two ways to move a displacement sensor, but which two methods are there? We're going to talk about that today. Displacement is a quantity related to the movement of the position of an object in the process of motion, according to the different motion methods, the displacement sensor can be divided into linear displacement sensor and angular displacement transmission ...
|
|
AC and DC contactor interchangeability
1. The AC contactor can replace the DC contactor in an emergency, and the suction time can not exceed 2 hours (because the heat dissipation of the AC coil is worse than the DC coil, which is determined by their different structures).
|
|
Turck's BL ident with long-range UHF technology
BL ident products with long-interval UHF technology from Turck can be used in product control, logistics or process automation systems. Compared to HF, UHF has a longer read/write interval. UHF modules can be sensitively integrated into the BL ident system without the need for messy equipment ...
|
|
How accelerometers are installed – Turck
The first type: screw device
The method device should be selected quenched steel screws, at the time of the device, the screws are first screwed into about half the length, the screws should be straight with the surface, the sensor should be fixed according to the specified torque, and a layer of grease should be applied to the joint surface.
|
|
5 common pressure sensors – Turck sensors
1. Piezoresistive force sensor:
Resistive strain gauges are one of the first components of piezoresistive strain transducers. The operating principle of metal resistance strain gauge is the phenomenon that the resistance value of the strain resistance adsorbed on the matrix data changes with mechanical deformation, which is commonly known as the resistance strain effect.
...
|
|
Calibration steps for pressure transmitters – Turck
When calibrating the pressure, we need to zero the current of the transmitter, and then carry out the positive and negative relocation of the zero point according to the requirements, if the pressure transmitter is calibrated for the first time, then we also need to add the measured physical quantity calibration, and the subsequent calibration can be calibrated by manual operation.
...
|
|
Turck's fail-safe product family
Fail-safe systems are now an integral part of machinery and plant automation. With the latest complete fail-safe modules, Turck continues to be a driver of distributed automation concepts in these areas and provides support for those who plan to develop a wide range of products in the field of machine hardware and related ...
|
|
Precautions for the installation of load cells in Turck
First of all, when using load cells, it is necessary to adjust the orientation of the sensors. Think of the sensor as a fragile product, cut the oscillation of the sensor, and try to handle it gently, because many sensors have elastomeric devices planned internally, and these elastomeric devices are critical to the stability of the sensor, ...
|
|
Inductive sensors from the UPROX series from Turck
On June 27, 2018, Turck's Uprox series inductive sensors were awarded the "AI User Praise Award" at the 2018 (18th) Advanced Manufacturing Skills and Car Manufacturing Industry High-Level Forum and Award Ceremony. The award was selected by readers in the car industry, and it took several months to select ...
|
|
Vision sensors and displacement sensors – Turck sensors
1. Vision sensor
The low cost and ease of use of vision sensors have attracted machine designers and process engineers to integrate them into a wide range of applications that previously relied on manual, multiple photoelectric sensors, or no inspection at all. The industrial use of vision sensors includes inspection, measurement, measurement, ...
|
|
Turck Ethernet IP67 fail-safe I/O modules
Turck's TBPN and TBIP complete fail-safe modules are field-based and function as safety logic controllers, thus helping customers in the modular planning and manufacturing of their machines.
Offline quiz security features to reduce ...
|
|
Turck expands its two-wire general-purpose product range
Since September 2020, Turck has expanded its portfolio of general-purpose products to include 2-wire general-purpose inductive sensors. Since the introduction of the universal 3-wire product, the general-purpose product family has been greatly developed, and the product is now used in various types of customers. Pass...
|
|
What sensors does the robot contain – Turck
Robots are chaotic machines controlled by computers with similar physical and sensory functions as human beings. Flexible action program; There is a certain level of intelligence; Able to work without relying on human manipulation. So in general, what are the primary sensors that robots contain?
...
|
|
Considerations for the selection of inductive sensors
1. Program selection
Before selecting a plan, the given technical indicators should be clarified, such as the scale of the value, the error of the value, the resolution, the repeatability error, the time drift, the temperature drift, the application environment, etc.
2. The selection of core data ...
|
|
Turck's highly efficient IO-Link encoder series
Turck's encoder range has been strategically expanded even further. We can now consider our customers to offer newer and faster encoders with IO-Link interfaces (COM 3, 230.4 kbps).
As part of Turck's product range ...
|
|
Contact
working hours
