Hydrogen is a colorless and odorless gas, with a density of 0.09 g/L (the lightest gas) under standard conditions, and is poorly soluble in water. At -252 °C, it becomes a colorless liquid, and at -259 °C, it becomes a snowflake-like solid.
When measuring hydrogen, pay attention to:
In the case of high temperature and high pressure, hydrogen molecules are relatively active, and hydrogen molecules are small and penetrating, and there will be hydrogen corrosion, which is often called "hydrogen penetration";
Solution:
(1) The sensor should be gold-plated and filled with fluorinated oil (fluorinated oil).
(2) The "O" ring seal cannot be selected, but the all-welded structure should be used.
(3) Increase the thickness of the steel.
(4) Use other types of sensors, such as glass micromelting, etc.
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Correct use of the high-temperature pressure sensor method – ifm
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.
Can...
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How to use load cells and amplifiers – ifm
1. Wiring according to wiring requirements
2. Connect the specified size DC power supply to the transmitter.
3. Connect the sensor and adjust it to the corresponding zero output value (the corresponding zero output value (e.g. 0-10V output.
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The main functions of IFM ifm proximity switches
1. Inspection interval
Detect the stop, start and orientation of elevators and lifting equipment; Detect the orientation of the vehicle to prevent two objects from colliding; Detect the setting orientation of the operating machinery and the limit orientation of the moving machine or components; Detect the abort azimuth of the rotary body, the opening or closing of the valve; Detection of pneumatic or hydraulic cylinders ...
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Attention to the selection of industrial sensors – ifm
1. According to the measurement object and measurement environment
In order to carry out a detailed measurement operation, it is necessary to consider the principle of the sensor first, which needs to analyze many factors before confirmation. Because, even if the same physical quantity is measured, there are sensors with multiple principles to choose from.
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Structure and application of resistive sensors - ifm
Structure of a resistive sensor
The structure of a resistive sensor consists of two basic parts: a resistive element and a brush (movable contact). The motion of the brushes in relation to the resistive elements can be linear, rotational and spiral, thus converting the linear or angular displacement into the necessary ...
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Daily maintenance of ifm sensors
The maintenance of the sensor is an important step to ensure its normal operation and extend its service life. Here are some claims for caring for your sensors:
1. Regular cleaning: Sensors may be affected due to the accumulation of dust, grime, or chemicals. It is necessary to clean the sensor regularly, ...
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Measuring pre-work with vibration sensors – ifm
1. Confirmation of the initial void
The various types of oscillating sensors should have excellent linearity at a certain void voltage value, so it is necessary to adjust the appropriate initial void when installing the sensor.
According to the characteristic curve of the oscillation sensor, the sensor used for oscillation measurement ...
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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. ...
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Load cell range and accuracy – ifm
1. Sensor scale:
1) Normal use (static experiment or quasi-static experiment, when the frequency of application is not high, the scale of the sensor should be selected to consider the measured force value, as well as the component of the auxiliary tool (test fixture), etc.).
2) When used dynamically, the scale of the sensor is generally larger than the ...
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Moisture-proof method for sensors – ifm
As an accurate detection device, if the sensor is damp, it will be troublesome, the sensor will affect its accuracy and stability when it is damp, and it will form a problem if the sensor is used in a more important place, then the loss of the formation is very heavy. In '08 there was a ...
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The difference between a sensor module and a sensor – ifm
The first statement is that the sensor module belongs to a kind of sensor module, according to different packaging forms, the sensor module can be divided into different types such as chip BQ4010YMA-200, PCBA, shell packaging module, etc., collectively referred to as the sensor module, different types of sensor modules according to different ...
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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.
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What are the typical designs of torque sensors – ifm
Unlike load cells or force transducers, the measuring body of a torque transducer is not subjected to a tension load when used, but is torsionally affected by lever torque or torque. Therefore, torque sensors require special strain gauges to measure this type of load, i.e. torque. Canon...
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The difference between fiber optic sensors and photoelectric sensors – ifm
Optical fiber sensors and photoelectric sensors are two typical sensors, which are widely used in production and measurement, so what is the difference between the two? Next, we will analyze the differences between the two from the perspective of principle and use.
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Signal discrimination method generated by vibration sensors – ifm
1. Distinguish according to the gap voltage
The oscillation sensor outputs a voltage signal that contains both DC and AC. The amount of DC corresponds to the uniform distance between the sensor and the probe, also known as the void voltage. The traffic corresponds to the oscillating signal. If the void voltage is normal, the alternating current is usually normal.
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Causes of bearing damage caused by ifm
Not all damaged bearings can be corrected, but the cause and extent of the damage to each damaged bearing must be evaluated to prevent or reduce further damage before considering the correction or replacement of a new bearing. There are many reasons for bearing damage, such as improper equipment, dirt invasion, etc.
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A brief description of the features of ifm multi-code readers
Powerful detection function
The new multicomputer delivers 4x higher resolution for reliable reading results, 10x faster calculation times, and 10x faster setup.
Teach button
Its sensing ...
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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 ...
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Fuel level sensors monitor the cause of the fuel level – ifm
The oil level sensor according to the resistance is mechanically connected to the float, and the float can rise or fall with the fuel level, and the resistance of the sensor changes as the float moves. The sensor used is part of the current balance circuit in the fuel gauge display circuit, which is generally used to drive ...
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Failure analysis and definition of ifm vortex flowmeters
Vortex flowmeter series instrument because of the use of the environment is special or harsh in the field work sometimes present such and such problems, resulting in production will be affected, vortex flowmeter and orifice flowmeter and V-cone flowmeter are different, as far as the orifice flowmeter is concerned, it is the standard orifice plate and multi-parameter ...
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