Sensors and transmitters are thermal surface concepts. A sensor is a general term for a device or equipment that can be measured by rules and converted into a usable output signal according to a certain rule, which is generally composed of an active element and a conversion element. When the output of a sensor is a regular gauge signal, it is called a transmitter.
The concept of a transmitter is an instrument that converts non-standard electrical signals into standard electrical signals, and a sensor is a device that converts physical signals into electrical signals. The primary surface refers to the field measurement surface or the base control table, and the secondary surface refers to the surface that uses the primary meter signal to complete other functions: such as control, flashing and other functions.
The sensor converts non-electrical physical quantities such as temperature, pressure, liquid level, material, gas characteristics, etc. into electrical signals or sends physical quantities such as pressure and liquid level directly to the transmitter. The transmitter expands the small electrical signals collected by the sensor to transmit or suggest control components. Or convert the non-electric power input from the sensor into an electrical signal and expand it together for remote measurement and control. Imitations can also be converted to digital quantities on request.
Together, the sensor and the transmitter form the monitoring signal source for automatic control. Different physical quantities require different sensors and corresponding transmitters. There is also a kind of transmitter that does not convert physical quantities into electrical signals, such as a kind of "differential pressure transmitter" of boiler water level gauge, it is a kind of distant surface that sends the water in the lower part of the liquid level sensor and the condensate of the upper steam to the two ends of the bellows of the transmitter through the surface pipe, and the differential pressure stranded machinery at both ends of the bellows expands the equipment to indicate the water level with a pointer. Of course, there are also transmitters that convert electrical analog quantities into digital quantities.
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Wireless HART technology for industrial processes
WirelessHART uses the 2.4 GHz band (which is no-nonsense and globally) as a transmission medium for a variety of radio skills, including WLAN, Bluetooth, and ZigBee. However, WirelessHART is more than just a variant of WLAN.
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The special safety barrier base plate for the H series dark horse system
The new base plate has been developed and upgraded according to the technical parameters of the Dark Horse system, and is specially adapted to the HIMax safety system. In addition to their comprehensive functionality, these baseplates also offer the look and feel of the Dark Horse System baseplates for use in non-risk areas. The new product line masks all signal types and ...
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The role and classification of safety barriers
In electrical intrinsic safety explosion-proof, we generally divide the workplace into explosion-proof areas and non-explosion-proof areas. There is the transmission of electrical energy between the explosion-proof area and the non-explosion-proof area, for example, the switches, buttons, sensors, etc. in the explosion-proof area are connected to the PLC placed in the electrical cabinet in the non-explosion-proof area through wires.
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Eltra Incremental Rotary Encoder Types
Eltra incremental encoders fall into three categories:
Optical solid shaft incremental encoder Eltra. The couplings in these types are made of solid shafts.
· EL-ER 30 E/H；
· EH 38 A/B/D；
· EL-E ...
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The main role of the encoder is explained - double blessing
An encoder is a device that converts angular or linear displacement into an electrical signal. The former becomes the yardstick, and the latter is called the yardstick. According to the readout method, the encoder can be divided into two types: touch type and non-touch type. The touch type selects the brush output, and a brush touches the conductive area or the insulating area to represent the shape of the code.
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Sensor selection
The company is a company focusing on the development of mechanical motion control and sensing skills, and its products have the characteristics of high reliability, high accuracy and high protection, and play an irreplaceable role in the process of industrial production and mechanical manufacturing.
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Test method for sensor output
1. Test for NPN output sensor
The NPN sensor output, also known as OC gate output, is based on the principle of open collector output of a transistor.
The principle of NPN type OC gate output is whether the output of the NPN transistor and GND are short-circuited. When the transistor is turned on, the output and GND ( ...
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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 wide range of applications, rotary encoders convert mechanical inputs into electrical signals, which can be used by counters, tachometers, programmable ...
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Precautions during the installation of safety barriers
1. The safety barrier should be installed in a safe place, and the environmental conditions meet the requirements of the "application conditions" in the "Safety Gate 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 wiring slot.
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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, ...
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The choice of accelerometers – Beggar
1. Analog output or digital output:
The first thing to pay attention to is the case of the analog and digital outputs, which is important because it is the interface between the system and the sensor. In general, the voltage of the analog output is proportional to the acceleration. For digital outputs, pulse-width modulated signals are typically used ...
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Selection criteria for proximity switches
Points to note in the selection of proximity switches
1. The working voltage of the proximity switch output is selected, generally DC type DC24V or AC AC250V optional;
2. Proximity switch output method selection, generally NPN-normally open, NPN-...
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The structure of the miniature tensile pressure sensor
Based on the characteristics of fixed force measurement, the sensor principle structure is selected as a resistance strain force sensor with mature technology and low requirements for the measurement circuit, and the elastomer of one of the key components of the sensor is selected S-beam structure, as shown in Figure 1. When subjected to pressure P, the ...
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Introduction and installation matters of the safety barrier
The safety barrier, also known as the safety factor meter, is an important part of the intrinsic safety system.
There are two main types of barriers: P+F Zener barriers and P+f isolated barriers. The core elements of a double Forgina barrier are a diode, a current-limiting resistor and a fast fuse.
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The difference between NPN type and PNP type in sensor switches – we are blessed
There are two common types of sensor switches: NPN type and PNP type, so what are the differences and differences between them?
For example, there is a switch VT in the NPN open collector output circuit, and the output OUT is through the switch ...
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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 ...
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Some models of the sensor
The model number of the sensor
P+F NBB10-30GM60-WS
P+F NJ50-FP-E2-P1
P+F NBN8-18GM50-E2
P+F NJ50-FP-A2-P1
P+F KT10/33
P+F OBE10M-18GM60 ...
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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 ...
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Fault detection of load cells and corresponding replacement – we are blessed
1. Fault judgment
When the electronic scale presents the following phenomena, it is necessary to see whether the load cell presents a problem.
1) If the electronic scale does not show zero, the display screen continues to shine or show zero in the future, and the weighing number does not appear when weighing.
2) Electric ...
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The number and range of load cells – we are blessed
Resistive strain gauges, elastomers, and detection circuits are the first and foremost parts of the equation. An elastomer is a special shaped structure. It has two functions, firstly, it bears the load of the force on the cell and the external force, to achieve a relatively static equilibrium, and secondly, it ...
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