All-metal waterproof circular connector are available in a variety of specifications, such as M8, M12, M16, M23, etc. Each product supports different currents and voltages, with male and female straight elbows, shielding without shielding.
circular connector, rich structure with thread, buckle two kinds of connection. Plug is divided into: assembly type, injection type; Socket can be divided into: board before installation, board after installation, PCB board and other circular connection modes. 2-17 core, with high current, low current and power signal mixed to meet a variety of connection needs, protection level up to IP65. Copper gilding of the needle material meets the demands of salt spray acid corrosion resistance.
Electrical performance of all-metal waterproof circular connector:
1, rated voltage is also known as the working voltage, it mainly depends on the insulation materials used by the anti-magnetic welding circular connector, the size of the distance between the contact pair, some components or devices in lower than its rated voltage, may not be able to complete its due function. 250V (3-4 cores) 60V (5 cores) 30V (8-12 cores) 24V (17 cores)
2, rated current, also known as working current, copper rated voltage, under the condition of rated current, anti-magnetic anti-welding connectors can generally work normally. 4A (3-5 core) 2A (6-8 core) 1.5A (12 core) 1A (17 core) /3, contact resistance refers to the resistance generated by the two contact conductors of circular connectors in the contact part, in the selection of two problems should be noted
First, the contact resistance index of anti-magnetic and anti-welding connectors is in fact the contact resistance, which includes contact resistance and contact resistance to the conductor. Usually the conductor resistance of circular connector is small, so the contact resistance is referred to as contact resistance in many technical specifications.
Second, in the circuit connecting small signals, we should pay attention to the given contact resistance index is tested under what conditions,
because the contact surface of circular connector will be attached to the oxide layer, oil pollution or other pollutants, two contact surface will produce film resistance. When the thickness of the film increases, the resistance increases rapidly, which makes the film become a bad conductor. 8 m or less Ω
1. Sensor circular connector The sensor connector type is determined according to the measuring object and the measuring environment
To carry out a specific measurement work, we must first consider the principle of the sensor circular connector, which needs to be analyzed after many factors to determine. Because, even if the measurement of the same physical quantity, there are a variety of principles of the sensor connector available, which principle of the sensor connector is more appropriate, it is necessary to consider the following specific problems according to the characteristics of the measurement and the use of the sensor connector conditions: the size of the range; The volume requirements of the sensor circular connector at the measured position; Whether the measurement mode is contact or non-contact; Signal extraction method, wired or non-contact measurement; The source of the sensor connector, domestic or imported, whether the price is affordable, or their own development.
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After considering the above issues, we can determine which type of sensor circular connector to choose, and then consider the specific performance indicators of the sensor connector.
2, sensor connector sensitivity selection
In general, you want the sensitivity of the sensor circular connector to be as high as possible within the linear range of the sensor connector. Because only when the sensitivity is high, the value of the output signal corresponding to the measured change is relatively large, which is conducive to signal processing. But it should be noted that the sensitivity of the sensor connector is high, and the external noise unrelated to the measurement is easy to mix, will also be amplified by the amplification system, affecting the measurement accuracy. Therefore, it is required that the sensor circular connector itself should have a high signal-to-noise ratio, as far as possible to reduce the introduction of factory interference signals from the outside.
The sensitivity of the sensor connector is directional. When the measurement is a single vector, and the direction of its high requirements, should choose other direction sensitivity small sensor connector; If a multi-dimensional vector is being measured, the cross sensitivity of the sensor circular connector should be as small as possible.
3, sensor connector frequency response characteristics
The frequency response characteristic of the sensor circular connector determines the frequency range to be measured, and the measurement condition must be maintained within the allowable frequency range. In fact, the response of the sensor circular connector always has a fixed delay, and the shorter the delay time is expected to be the better.
The sensor connector frequency response is high, the signal frequency range can be measured is wide, and due to the influence of structural characteristics, the inertia of the mechanical system is large, because of the low frequency sensor circular connector can be measured signal frequency is low.
In the dynamic measurement, the response characteristics should be based on the characteristics of the signal (steady state, transient, random, etc.), so as to avoid the error of fire.
4. Linear range of sensor connectors
The linear range of the sensor circular connector refers to the range where the output is proportional to the input. Theoretically, within this range, the sensitivity remains constant. The wider the linear range of the sensor connector, the larger its range, and can ensure a certain measurement accuracy. When selecting the sensor circular connector, when the type of sensor connector is determined, the first thing to see whether its range meets the requirements.
But in fact, no sensor circular connector can guarantee absolute linearity, and its linearity is relative. When the required measurement accuracy is relatively low, the sensor connector with less nonlinear error can be approximately regarded as linear in a certain range, which will bring great convenience to the measurement.
5. Stability of sensor connector
The ability of a sensor circular connector to remain unchanged in performance over a period of use is called stability. Besides the structure of the sensor connector, the main factor affecting the long-term stability of the sensor connector is the operating environment of the sensor connector. Therefore, to make the sensor connector have good stability, the sensor connector must have a strong ability to adapt to the environment.
Before selecting a sensor circular connector, investigate its use environment and select the appropriate sensor connector according to the specific use environment, or take appropriate measures to reduce the impact of the environment.
The stability of the sensor circular connector has a quantitative index. After exceeding the service period, it should be calibrated again before use to determine whether the performance of the sensor connector has changed.
In some cases where the sensor circular connector can be used for a long time and can not be easily replaced or calibrated, the stability of the sensor connector is more stringent and should be able to withstand the test of a long time.
6. Precision of sensor connector
Precision is an important performance index of sensor circualr connector. It is an important link related to the measuring precision of the whole measuring system. The higher the precision of the sensor connector, the more expensive its price, therefore, the accuracy of the sensor connector as long as it meets the accuracy requirements of the whole measurement system can be, do not have to choose too high. In this way, it is possible to choose a cheaper and simpler sensor connector among many sensors that meet the same measurement purpose.
If the purpose of measurement is qualitative analysis, the sensor circualr connector with high repeat accuracy can be selected, not the absolute value of high accuracy; If it is for quantitative analysis, accurate measurements must be obtained, the sensor connector with an accuracy level that can meet the requirements should be selected.
For some special applications, the sensor circualr connector cannot be selected, so it is necessary to design and manufacture the sensor connector. The performance of the self-made sensor connector should meet the application requirements.
