First, the problem of the pressure sensor sealing ring
If the output of the pressurized transmitter does not change, and the output of the pressurized transmitter changes suddenly, and the zero position of the pressure relief transmitter cannot be returned, it is likely that the problem of the pressure sensor sealing ring. The common reason is that the sealing ring is tightened, after the sensor is tightened, the sealing ring is compressed into the sensor pressure port to block the sensor, and the pressure medium cannot enter when pressurized, but when the pressure is high, the sealing ring is suddenly opened, and the pressure sensor is changed by pressure. The best way to eliminate this problem is to remove the sensor, directly observe whether the zero position is normal, if the zero position is normal, you can replace the sealing ring and try again;
Second, the transmitter and the pointer pressure gauge have a large comparison error
It is a normal phenomenon to present errors, and it is sufficient to recognize the normal error scale; The last problem that tends to show up is the effect of the position of the differential pressure transmitter device on the zero output. Because of the small measurement scale of the differential pressure transmitter, the sensing element in the transmitter will affect the output of the differential pressure transmitter. When the device is installed, the pressure sensor of the transmitter should be axial perpendicular to the direction of gravity, and the zero position of the transmitter should be adjusted to the standard value after the device is fixed.
Third, the pressure goes up, and the output of the transmitter can't go up
In this case, you should first check whether the pressure interface is leaking or blocked, if you admit that it is not, check the wiring method and check the power supply, if the power supply is normal, then simply pressurize to see if the output changes, or observe whether the sensor zero has an output, if there is no change, the sensor has been damaged, it may be that the appearance is damaged or other links of the whole system are problems;
Fourth, the output signal of the transmitter is unstable
This kind of problem can be a problem of stressors. The pressure source itself is an unstable pressure, which is likely to be due to the weak anti-interference ability of the appearance or pressure sensor, the oscillation of the sensor itself and the problem of the sensor;
|
More on that
|
Industrial applications of rotary encoders
Rotary encoders are a class of sensors used to detect the angle of rotation and its derived mechanical parameters, including velocity and acceleration, etc., and can detect transmission movements such as rotation and linear lines. Due to its widespread use, rotary encoders convert mechanical inputs into electrical signals, which can be used by counters, tachometers, programmable...
|
|
A common type of sensor – a sensor
Resistive
A resistive sensor is a device that converts physical quantities such as displacement, deformation, force, acceleration, humidity, temperature, etc. into resistance values. There are mainly resistive strain gauge, piezoresistive, thermal resistance, thermal, gas-sensitive, moisture-sensitive and other resistive sensor materials.
|
|
Illustrate the dynamic characteristics and linearity of our sensors
The dynamic characteristics of a sensor refer to the characteristics of the output of the sensor when the input changes. In practice, the dynamic characteristics of the sensor are often indicated by its echo to some normative input signals, because the echo of the sensor to the normative input signal is easy to obtain by experimental methods, ...
|
|
Problems and analysis of P+F encoders in use
Analysis of the causes of the problems encountered by P+F in the use of encoders:
1. Grating pollution This will reduce the signal output amplitude, and the oil must be quietly wiped off with absorbent cotton dipped in anhydrous alcohol.
2. Encoder connection cable ...
|
|
Attention to the problem of testing six-wire load cells – we are blessed with it
Because the appearance of the six-wire sensor and the six-wire four-wire sensor can not be distinguished, before the measurement and verification personnel test the sensor, if they find that the sensor input and output cable has six wires, it should be clear whether the sensor is a six-wire sensor, and the six-wire load cell test can not use a fine digital voltmeter...
|
|
P+F proximity switch selection points
1. Select the proximity switch type according to the detected object. If the detection object is metal, the inductive proximity switch is preferred, and if the detection object is a non-metal such as wood, plastic, paper, water, etc., or a smaller and finer metal, a capacitive proximity switch should be selected.
...
|
|
Introducing the sensor
From leveling cranes and monitoring the inclination of front-end loaders to operating elevators, inclination and acceleration sensors can be used in a variety of ways. These sensors are guaranteed to measure even in harsh conditions. Thanks to the innovative split unit concept, the F99 series ...
|
|
The difference between NPN type and PNP type switches
There are two common types of sensor switches: NPN type and PNP type, so let me tell you what are the differences and differences between them?
For example, there is a switch VT in the NPN type open collector output circuit, and the output OUT is connected to the power supply 0V through the switch VT ...
|
|
Selection criteria for proximity switches
1. The output working voltage of the proximity switch is selected, usually DC type DC24V or AC AC250V optional;
2. Proximity switch output mode selection, usually NPN-normally open, NPN-normally closed, PNP-normally open, PNP-normally closed, 2-wire normally open, 2-wire normally closed, DC 3-wire, DC 4-wire ...
|
|
We participate in discussions on Industry 4.0 in Germany
As one of the early participants and drafters of Industry 4.0z in Germany, we were involved in the discussion of the RAMI reference architecture model. Focusing on connectivity and data presentation, through exhibitions and market applications, we have achieved relevant results, collected effective feedback, and guided our digital and physical products.
|
|
Typical construction of a smart sensor
A sensor is an input device that receives a signal or stimulus and responds to it. Some sensors now integrate many sensing elements and readout circuitry into a single silicon chip, which then provides high accuracy and multiple functions. The new sensor has more functions, including user friendliness.
|
|
What is Pulse Ranging Technology (PRT) – a sensor
PRT (Pulse Ranging Technology) stands for Pulse Ranging Technology, which is currently the most accurate industrial-grade process used to measure intervals. By using this direct measurement method, the measurement range from a few centimeters to several hundred meters can be accurately recorded.
...
|
|
Benefits of our industrial sensors
The R2 and R3 series of photoelectric sensors are impressive products that characterize a very small housing plan. Robust R2/R3 miniature photoelectric sensors – smaller than a matchbox, space-saving miniature housing photoelectric sensors R2/R3 series ...
|
|
Precautions for the installation of linear displacement sensors – we are blessed
1. The linear displacement sensor should be used to prevent over-travel in the application, and a certain margin should be left in the selection to facilitate the use of the device.
2. The linear displacement sensor device is fixed by a bracket, and then the follow-up shaft is connected to the moving object to be measured. When the sensor is fixed in the device, it can be ...
|
|
Common dry contact signals for safety barriers
The dry contact of the barrier is an electrical switch that has two positions: closed and disconnected. There is no polarity between the two contacts of the dry contact and is interchangeable. That is, a simple switch, the contact does not provide power supply, and the power supply can be used to control the condition of the equipment. But it doesn't offer ...
|
|
Installation steps for angle sensors – we are blessed
1. Position with the sensor installation boss, and fix it on the metal plate with screws, nuts or pressing plates. When installing the sensor, it is strictly forbidden to turn and drill the shaft and shell to avoid the shaft or shell being subjected to external impact and pressure, and the axial and radial direction of the shaft is not allowed to be subjected to impact force and pressure ( ...
|
|
What capacitive proximity sensors can detect – and what we can detect
Proximity switch is a kind of azimuth switch that can be operated without mechanical direct touch with moving parts, when the sensing surface of the object proximity switch to the action interval, the switch can be operated without mechanical touch and any pressure, so as to drive DC electrical appliances or computer (PLC) ...
|
|
Pre-selection of sensors
In the early application and selection of sensors, how to choose is a very important point, and the selection is smooth, and the following will briefly talk about how the sensor is selected in the early stage.
The use of the sensor in practical operation is relatively common and may be practical ...
|
|
Zero drift of high-frequency pressure sensors – we are blessed
There are several reasons for the formation of zero drift of high-frequency pressure sensors:
1. There are bubbles or impurities in the adhesive layer of the strain gauge
2. The function of the strain gauge itself is unstable
3. There are virtual solder joints in the circuit
4. The stress release of elastomers is incomplete; In addition to the magnetic field, ...
|
|
Wiring of weighing strain gauge tension and compression sensors – we are in control
Strain gauge tension and compression load cells are available in two different input and output wiring methods:
The first is the four-wire connection method.
The load cell of the four-wire connection method has no special requirements for the secondary instrument panel, and it is very convenient to use, but when the cable is long, it is easy to be shaken by the operating temperature.
|
|
Contact
working hours
