- Our company was invited to participate in the fourth (expanded) meeting of the 8th Hunan Instrument Industry Association 2020-11-26
- 1502 pressure transducers used in oil & gas, Viatran 511 2022-08-11
- Ultra High Temperature Pressure Sensor Used In Oil And Gas 2022-08-09
- Applications of cryogenic pressure transducer 2022-08-05
- Pressure sensors used in oil and gas industry 2022-08-03
- Application of cryogenic pressure sensor in aerospace cryogenic propellant supply system 2022-07-29
- Pressure sensors for oi l& gas , hammer union pressure transducers 2022-07-26
- Cryogenic Pressure Sensors And Latest Researches 2022-07-22
- What are cryogenic pressure sensors ? 2022-07-20
- PPM-293E 1502 hammer union pressure sensor for drilling and cementing 2022-07-18

What are the external interference factors to the sensor's transmission signal?
- Categories:Industry news
- Author:csppm
- Origin:csppm
- Time of issue:2020-12-15 15:29
- Views:
(Summary description)In the sensor application field, everyone must be very familiar with analog sensors and switch sensors. In the control system, whether it is an input signal or an output signal,
What are the external interference factors to the sensor's transmission signal?
(Summary description)In the sensor application field, everyone must be very familiar with analog sensors and switch sensors. In the control system, whether it is an input signal or an output signal,
- Categories:Industry news
- Author:csppm
- Origin:csppm
- Time of issue:2020-12-15 15:29
- Views:
In the sensor application field, everyone must be very familiar with analog sensors and switch sensors. In the control system, whether it is an input signal or an output signal, the analog parameter of the parameter is a switch, because the signal data transmission method is relatively simple , (Such as: on and off, conduction and disconnection, etc.) without continuous upload. Therefore, the interference to the outside world is relatively small. The transmission of analog signals is more complicated and susceptible to external interference. Next, I will focus on the external interference of analog sensor transmission signals.
The analog quantity sensor is different from the switch quantity sensor. The signal transmitted by the analog quantity sensor is a continuous signal, which indicates the size of the parameter through voltage, current, resistance, etc. It is worth noting that the continuous signal refers to time continuous, and the signal data transmission technology of the analog sensor can be discontinuous, but it must be continuous in the recording time management. So what are the factors that affect the types of external interference that affect the analog sensor?
(1) Electrostatic induction
Electrostatic induction is due to the existence of family planning capacitance between branches, which causes the parasitic capacitance of one end to pass to the other end, which is often referred to as capacitive coupling.
(2) Electromagnetic induction
When several different circuit designs sense each other, the current at one end will be coupled to the circuit at the other end through a magnetic field, that is, electromagnetic induction. When using pressure sensors and pressure transmitters, you need to pay attention to this factor.
(3) Leakage current induction
Due to the influence of hardware, especially the increase in the relative humidity of the environment for the application and development of the sensor, the insulation resistance decreases, which will greatly increase the risk of leakage current and cause interference.
(4) Radio frequency interference
It is mainly the interference and high harmonic interference caused by the start-stop operation of high-power equipment.
(5) Other interference
This mainly refers to factors in the production space, such as environmental influences, mechanical interference, thermal interference, chemical interference and other factors.
In short, if we want to know why our sensors (pressure, temperature, liquid level, weighing, etc.) are disturbed, we should first determine what type of transmission our sensors are, analyze the interference source and the sensitivity of the signal transmission line, check the grounding and Whether the shielding measures are in place, and whether there are large-scale electrical equipment nearby, determine the plan based on the actual situation and do not blindly handle it.
To understand Changsha Titanium, please click:http://www.csppm.com/blank2121.html
Scan the QR code to read on your phone
HOT NEWS

CONTACT US
Contact Us
E-mail:info@csppm.com
ADD: 404, block a, building 7, international enterprise center, No. 188, middle environmental protection road, Yuhua District,
Changsha, Hunan Province

Sweep It
Copyright © 2020 CHANG SHA TAIHE ELECTRONIC EQUIPMENT CO.LTD 湘ICP备19039544号 BY:xinnet
Copyright © 2020 CHANG SHA TAIHE ELECTRONIC EQUIPMENT CO.LTD 湘ICP备19039544号 BY:xinnet