1. It is necessary for the sensor to be properly installed
Damage to high-temperature pressure sensors is usually caused by their installation in improperly machined holes. When the sensor is loaded into a hole that is too small or eccentric, the sensor diaphragm may be damaged, which can then cause the instrument to not function properly.
The kit that can be used to machine the holes of the device will help to ensure that the holes are correctly scaled. Unit torque of 100 to 200 inch-pounds is critical to constituting a satisfactory seal. However, excessive unit torque can cause seizure. To prevent seizure, a high-temperature anti-seizure compound should be applied to the sensor threads prior to installation. Even with anti-sticking agents, sensors with unit torques in excess of 500 in-lbs will be difficult to remove.
2. Ensure that the thread scale is correct
High-temperature pressure sensors screwed into incorrectly sized device holes can cause wear and tear, which can then damage the instrument's threads. This damage may result in poor seals and data leakage, and the instrument will not function properly or safely. It is necessary to use an appropriate size of the device hole to prevent thread wear. Please ensure that the device holes are machined and cleaned correctly.
3. It is necessary to clean the device hole
It is important to keep the device holes of the sensor clean and free of any plastic build-up. Before cleaning the extruder, all sensors should be removed from the barrel to prevent damage to them. After removing them, there is a high chance that the plastic will flow into the device hole and harden. If this hard plastic residue is not removed, it can cause damage to the tip when the sensor is inserted from the beginning. Ability to remove contaminated plastics with a cleaning tool kit.
4. Pick a good location
High-temperature pressure sensors can be placed in the barrel, before the screen changer, before and after the melt pump, or in the mold. When the sensor is placed too far upstream of the barrel, unmelted plastic particles can wear down to the sensor tip and then cause damage. If the sensor is positioned too far back in the device hole, plugged molten plastic can accumulate between the sensor tip and the screw thread. As the moment passes, this plastic will degrade into carbon, which will prevent the transmission of a precise pressure signal. On the other hand, if the sensor goes too far into the barrel, the screw thread will cut the sensor tip.
5. Be careful to clean the sensor
All sensors should be removed before cleaning the extruder barrel with a wire brush or a special detergent. Any of these can damage the sensor diaphragm. When the barrel becomes hot, remove the sensor and wipe the tip clean with a non-abrasive cloth. At this point, the sensor hole should be cleaned with a clean drill/guide sleeve.
6. Prevent cold starts
If the extruder is not raised to operating temperature before the machine starts running, both the sensor and the extruder can be damaged. It is necessary to provide a satisfying "warm-up moment" to change the plastic from a solid state to a molten state. It should also be noted that if the sensor is removed from the cold extruder, the data may adhere to the tip of the sensor and cause the sensor diaphragm to be torn off. Before removing the sensor, make sure that the barrel has a sufficient temperature to soften any plastic present.
7. Do not over-pressurize the sensor
Even if the high-temperature pressure sensor is designed to accept 1.5 times the overpressure, it is necessary to use a model that ensures that the extruder pressure range used is correct to prevent the danger of applying too much pressure.
A good rule of thumb is that the sensor used should be able to withstand twice the pressure required by the application. This means that the extruder must operate at extremely high (and unsafe) pressures before the sensor can be damaged.
|
More on that
|
Everyday attention to ifm pressure transmitters
1. Measurement scale: The normal use of the pressure transmitter should not exceed its measurement scale and working condition scale, and the short-term overload is allowed to be 120%.
2. Working environment: The working environment of Germany IFM pressure transmitter should be free of strong corrosion ...
|
|
Steps to install a dynamic torque sensor – ifm
1. According to the connection form of the shaft and the length of the dynamic torque sensor, confirm the interval between the prime mover and the load, adjust the separation of the axis of the prime mover and the load relative to the reference plane, so that the coaxiality of their axis is less than Φ 0.03mm, and fix the prime mover and the load on the reference plane.
...
|
|
Applications in the field of ifm fiber optic sensors.
1) Urban construction
the use of interferometric screws and optical pressure sensors for bridges, dams, oil fields, etc.; embedding fiber optic sensors or reinforced fiber agglomerates in concrete; Traffic is monitored at airports using an interferometric fiber-optic vibration sensor system.
2) Civil Engineering and Environmental Supervision
|
|
Sensor performance indicators – ifm
Selection of sensitivity
In general, within the linear scale of the sensor, the higher the sensitivity of the sensor, the better. Because as long as the sensitivity is high, the value of the output signal corresponding to the measured change is relatively large, which is conducive to the signal processing.
|
|
The difference between a fiber optic sensor and a photoelectric sensor – ifm
The first point is that photoelectric sensors and fiber optic sensors work differently
First of all, from the principle of operation of the two, first of all, the photoelectric sensor is operated according to the principle of the photoelectric effect, that is to say, when the light hits the photoelectric sensor made of semiconductors, the light will be announced.
|
|
Applications of IFM capacitive sensors
1. ZCS1100 fine capacitance displacement sensor. This sensor can detect piezoelectric micro-displacement, shaking table, electron microscope fine-tuning, astronomical telescope lens fine-tuning, fine micro-displacement measurement, etc. The sensor is a single channel, high-performance linear displacement measurement system, innovative ...
|
|
The correct sequence of operation of the disconnector – ifm
The operation of the barrier switch should focus on avoiding pulling and closing the knife switch with load, and avoiding closing the knife switch with grounding.
The correct order of operation is:
Power transmission operation sequence, check the circuit breaker in the open position, first close the bus (power supply) side knife switch ...
|
|
Analysis of the characteristics of the ifm PN series pressure sensor
360-degree comprehensive dissection from the inside to the outside, the perfect characteristics of the net red PN series pressure sensor
Superior corrosion resistance
Ordinary pressure sensors use metal diaphragms, and PN pressure sensors use ceramic diaphragms to sense pressure, ...
|
|
The reason why the measurement results of the dynamic torque sensor do not match the accuracy – ifm
In the motor test system, the measurement of torque is often achieved by dynamic torque sensors.
The motor under test is connected to the dynamic torque sensor through the coupling, and the other end of the sensor is connected to the load motor through the coupling. When the system is operating, the motor under test is operating in the speed ring ...
|
|
Range, accuracy and installation of load cells – ifm
1. The scale of the sensor:
(1) In normal use (static test or quasi-static test, the frequency of use is not high), the scale of the sensor should be selected to consider the force value of the measurement, but also consider the weight of the auxiliary tool (test fixture) and so on.
|
|
Third prize in the ifm Innovative Product Group
The MVQ Smart Valve Sensor can accurately survey the valve orientation, and also has functions such as valve seal monitoring, sediment monitoring, blocking monitoring and switching time timeout monitoring for continuous valve condition monitoring. When the valve presents sediment accumulation, foreign body blockage, seal damage, etc., ...
|
|
Ultrasonic sensor ranging principle
Ultrasonic sensors are sensors that convert ultrasonic signals into other energy signals, usually electrical signals. Ultrasonic waves are mechanical waves that oscillate at frequencies higher than 20KHz. It has high frequency, short wavelength, small diffraction phenomenon, especially good directionality, can become a ray and directional propagation, etc.
|
|
Diffuse photoelectric sensor target impact
1. The larger the object, the more light is reflected and the farther the sensing interval is.
2. For visible red light sensors, light colors can be detected at a greater scale than dark colors. The color of the target object has a much smaller effect on the infrared light sensor. Compared to a flat or matte appearance, a highly reflective ...
|
|
Sensors in the mass flow controller – ifm
The mass flow manipulator is a new type of flow measurement and monitoring instrument, as well as an instrument that can conveniently monitor the activity of different gases in the pipeline without temperature and pressure compensation. Its working principle is to send the flow signal measured by the heating bridge of the sensor to the amplifier for amplification, and the enlarged ...
|
|
ifm unveiled many new products to the MICONEX2008
On November 18, 2008, the 19th Multinational Instrumentation Conference and Exhibition was held in Beijing International Exhibition Center, at the exhibition, as one of the world's leading manufacturers of electronic sensors in the field of industrial automation, Germany ifm electronics showed its advanced sensors and their corresponding ...
|
|
Common faults in ifm encoders
1. Encoder own problem: It refers to the problem of the encoder's own components, resulting in its inability to generate and output correct waveforms. In this case, the encoder needs to be replaced or its internal components repaired.
2. Encoder connection cable problem: the probability of this problem is high, and the maintenance is under repair.
|
|
Three major load cells – ifm sensors
1. Resistance strain gauge
The resistance strain gauge is a resistance wire mechanically distributed on a substrate made of organic materials, that is, it becomes a strain gauge. An important parameter for him is the sensitivity coefficient K. When his ends are subjected to the F force, they will elongate, that is, they will be deformed. ...
|
|
Advantages of ifm RFID solutions:
ifm has the widest range of IO-Link sensors on the market. The new RFID antenna further completes the original product variety. The RFID antenna is planned to connect to the IO-Link master. The master* can supply up to 8 M12 sockets for easy connection to IO-Link RFID antennas. IO-Link Master ...
|
|
Sensors, temperature sensors, RTDs and thermocouples – ifm
RTDs and thermocouples are the most commonly used temperature sensing elements for temperature sensors. The operating principle of thermocouple temperature sensor is that the two ends of the contact surface of two kinds of incompatible metals produce a weak and weak voltage when the temperature is inconsistent, and the temperature is measured by expanding the electric, which is not necessary to measure the high temperature. RTD Temperature Sensors ...
|
|
Features of the S-type load cell – ifm
1. S-type load cells are moderately priced and suitable for mass production - good sensor consistency is required, suitable for automated batch production, and high requirements for processing equipment to eliminate inconsistencies and faults formed by manual operation.
2、 ...
|
|
Contact
working hours
