1. The safety barrier should be installed in a safe place, and the environmental conditions should meet the requirements of the "application conditions" in the "Safety Barrier Selection Sample".
2. The connecting wires of the intrinsically safe end (blue end) and non-intrinsically safe end circuits of the barrier safety barrier should be laid separately in the assembly duct, and independent protective sleeves should be selected for each. No other power cords are allowed in the wiring duct on the intrinsically safe side, including the power cords used in the intrinsically safe circuit.
3. The conductor leading to the risk place should be an intrinsically safe conductor marked in blue, the soft copper area of the conductor must be greater than 0.5mm2, and the dielectric strength should be greater than 500V.
4. Before powering and debugging the barrier safety barrier, it is necessary to pay attention to whether the model, wiring method, and line polarity of the barrier safety barrier comply with the rules in the design and product requirements, otherwise it may cause harm to people and equipment.
5. It is strictly forbidden to test the dielectric strength between the terminals of the barrier safety barrier with a megohmmeter. If you want to check the dielectric strength of the system, you should first disconnect all the wiring of the barrier barrier, otherwise it may cause damage to the internal circuit of the barrier.
6. Before programming the safety barrier on site, it is necessary to disconnect all wiring before connecting to the programmer, and then power on the programming, otherwise it may cause undesirable consequences.
7. The appearance of the site connected with the barrier safety barrier shall be selected through the explosion-proof test of the relevant explosion-proof inspection department determined by the state and the appearance of the explosion-proof certificate.
8. When designing, installing, operating, and protecting barrier safety barriers, the instructions in the operation manual of this product and the "GB3836.15-2000 Electrical Equipment for Blasting Gas Environments Part 15: Electrical Installation in Risk Locations (Except Coal Mines)" and "GB50058-1992 Design Code for Power Installation in Blasting and Fire Risk Environments" should be strictly observed.
|
More on that
|
There are two types of encoders and common models
An encoder is a device that compiles or converts signals or data into signals that can be communicated, transmitted and stored – encoders can be divided into two categories: incremental and absolute.
Incremental encoders are the most important way to convert bits ...
|
|
Introduction of photoelectric switches for sensors
Photoelectric switches are what we generally call sensors. **Standard GB7665-87 defines a sensor as: a device or device that can sense the specified measured part and convert it into a usable signal in accordance with certain rules, which is generally composed of a sensitive element and a conversion element.
The sensor is a ...
|
|
Photoelectric sensor sensing mode – Doublebless
The pass-through beam device consists of an acceptor located within the line of sight of the transmitter. In this mode, an object is detected when the beam is blocked from the transmitter to the receiver.
The retroreflective device places the transmitter and receiver in the same direction, and uses the reflector to ...
|
|
The UHF F190 and F192 series readers are launched on the market
With the rapid development of automation technology, what kind of RF identification skills can be called "cutting-edge"? Reliable identification + seamless data transmission + continuous system operation, these three points are indispensable, and the UHF F190/F192 series launched by Bejiafu is a combination of many advantages. On a global scale ...
|
|
Displacement sensor failure solution - double blessing
(1) Electronic ruler
When the electronic ruler is used to a certain moment, in the face of aging problems, we should pay attention to the fact that if the seal is now aged, and there are many impurities, water mixtures and oil, then it will affect the touch resistance of the brush, resulting in the continuous beating of the displayed numbers.
|
|
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.
...
|
|
Analysis of the use of P+F 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 failure: the probability of this fault is high, and it is often encountered in maintenance, so it should be a priority element. Generally, the encoder cable is broken ...
|
|
Introducing encoders
The rotary encoder is an opto-mechatronic speed-displacement sensor. When the encoder shaft rotates and the grating disc rotates, the light cut out of the slit of the grating disc is received by the receiving element and an initial signal is generated. Germany is a well-known brand. The signal is reacted to by a follow-up circuit ...
|
|
Safety barriers are used for intrinsically safe system features
The barrier and barrier are composed of four parts: the input signal processing unit, the barrier unit, the output signal processing unit, and the power supply. Depending on the direction of the signal, a substantial safety plan is added to the input or output unit, which then forms a barrier and a barrier. Traditional barrier and safety ...
|
|
Introducing the Sofis Valve Position Indicator
Sofis, an expert in the operation of valves in the process industry, relies on sensors for its latest treatment solution, the "Valve Orientation Indicator" (VPI). VPI provides an overview of the orientation of manual valves in the plant network. Combined with integrated sensors and automatic detection...
|
|
What are the designs of torque sensors – we are blessed
Unlike load cells or force transducers, the measuring body of a torque transducer is not subjected to a tension load during operation, but is affected by the lever torque or torque, which can be changed. Therefore, torque sensors require special strain gauges to measure this type of load, i.e. torque. Canon...
|
|
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.
|
|
The difference between NPN and PNP photoelectric switches – we are blessed
The difference between NPN type and PNP photoelectric switching sensors lies in the different output levels. NPN outputs low, PNP then outputs high. The type of photoelectric switch is a very specialized technical issue. What are photoelectric switches NPN and PNP? What are their differences?
...
|
|
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...
|
|
Auxiliary mechanical device installation form - double blessing
Auxiliary mechanical devices: commonly used are rack and pinion, chain belt, friction runner, rope reeling machinery, etc.
Low-speed end device: installed behind the reduction gear, such as the shaft end of the winch wire rope drum or the shaft end of the next reduction gear ...
|
|
Analysis of the causes of repairs encountered in encoders – Doublebless
1. Encoder self-failure: It refers to the failure 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 the internal equipment repaired.
2. The encoder connection cable is faulty ...
|
|
Encoder classification form
1. Classification according to the way of engraving the disc is different
(1) Incremental type: that is, every time the viewpoint of the unit is rotated, a pulse signal is announced (there is also a sine and cosine signal, and then it is subdivided, and the pulse with a higher frequency is chopped), which is generally output for phase A, phase B and Z, and phase A and phase B are ...
|
|
The sensitive core structure of the accelerometer – we are blessed
The accelerometer is a sensor that can measure acceleration, this sensor can help the product to understand the environment in time, and it is very accurate, so what is the structure of its sensitive core?
1. Compression method: ...
|
|
Anti-jamming technology for sensors – we are blessed
1. Shielding skills
Containers are made from metal materials. Wrapping circuits that require maintenance between them can effectively prevent the disturbance of electric or magnetic fields, which is called shielding. Shielding can be divided into electrostatic shielding, electromagnetic shielding and low-frequency magnetic shielding.
2. Electrostatic shielding
...
|
|
The photoelectric switches are simply classified
An important function of the photoelectric switch is to be able to handle changes in the intensity of light: the light beam is changed by using optical components in the transmission medium; Use a beam of light to reflect objects; Instantaneously returns the light emitted by the beam over a long distance.
The photoelectric switch (photoelectric sensor) is a photoelectric proximity on...
|
|