Non-contact voltage sensor series products
Voltage detection is a very important parameter in industrial applications. However, the traditional contact voltage detection method has a short-circuit safety hazard. Therefore, it is difficult to achieve safe and effective detection voltage in important fields such as military industry, railways, chemical industry, and coal. For this reason, our company specializes in using specialized technology to develop a series of non-contact AC voltage detection products to meet the needs of voltage safety detection in important areas.
Table 1. Related parameters of non-contact power sensor unit
Detection characteristics | True effective value detection |
Output method | Wired transmission: 485, CAN bus; PLC power carrier Wireless transmission: 2G-5G, NB, LORA, etc. Analog quantity: 0-5VDC, 0-10VDC, 4-20mA, 0-20mA |
Accuracy class | 0.5～1.0% |
Isolation withstand voltage | 4KVDC or customized |
Response time | ≤300mS |
Power supply | 12-24VDC |
Working environment | Temperature: -10～60℃; Humidity: ≤95% (no condensation), other working temperature ranges can be customized |
Table 2. Electrical performance parameters of non-contact probe
No. | Probe name | Voltage detection lower limit | Voltage detection upper limit | Detection accuracy (Room temperature) | Input voltage Frequency Range | Working environment | Non-contact form | Whether to calibrate twice |
1 | Perforated probe | 10mVAC | 2KVAC | 1% | 25Hz~4KHz (put into production) 4KHz~20KHz (under development) | Temperature: -10～60℃; Humidity: ≤95% (no dat 25°C) | Piercing, no electrical contact | Yes |
2 | Open probe | 5VAC | 2KVAC | 1% | Piercing, no electrical contact | No | ||
3 | PCB probe | 10mVAC | 2KVAC | 1% | External terminal connection of the probe, internal high insulation | No | ||
4 | Open probe (flexible) | 5VAC | 2KVAC | 1% | Under development | Piercing, no electrical contact | Yes | |
5 | Post insulator probe | 10VAC | 40KVAC | 1% | 50Hz | External terminal connection of the probe, internal high insulation | Yes |
Product composition:
The non-contact voltage sensor is composed of three parts: a collection probe, a transmission line, and an intelligent processing unit.
1. Acquisition probe types: rigid closed, rigid opening, flexible opening, PCB terminal probe, post insulator probe, current/voltage combo probe, etc., can be customized for users.
List of acquisition probes
2. Connect the radio frequency line: shielded transmission of the collected signal, the maximum length is 10 meters;
3. Processing unit: signal software and hardware processing, AD conversion, output, communication management. Wide power supply 12-24V, provide a variety of shapes and installation methods (screw, guide rail, magnetic), the product can be freely matched with the above 5 kinds of probes according to needs.
List of processing units (products)
Product structure block diagram (take smart sensor as an example):
Product application block diagram:
Features
l Safety and reliability: The non-contact detection method is adopted to completely eliminate the hidden danger of short-circuit safety during voltage detection;
l Wide-range detection: micro-signal in the millivolt level to high-voltage detection in the ten thousand volt level;
l Wide frequency domain detection: 25Hz～30KHz alternating signal voltage detection;
l Multi-structure probe: rigid opening/closing, PCB terminal type, flexible opening, current/voltage combo probe, etc. to meet various applications;
l Multiple output modes: analog signal, digital signal, analog + digital signal output to meet the needs of various systems;
l Multiple transmission methods: wired methods such as 232/485/CAN and wireless methods such as 2G/4G/5G, NB, LORA, and RF;
l Intelligent products: self-diagnosis, self-learning, self-diagnosis, and self-compensation.
Pipeline gallery coaxial cable grounding monitoring system.
1. System purpose
l The size of the coaxial grounding voltage of the power cabinet in the pipe gallery.
l Remote management: data display analysis, equipment alarms, remote settings, software updates.
2. System Block Diagram
3. Features
l Probe types: various sizes, open/closed side heads (customizable), compatible with various needs of users.
l Detection characteristics: No need to connect to the circuit, no interference with the original circuit, convenient for later installation.
l Remote function: remote setting functions such as alarm threshold and acquisition threshold.
l Platform function: Internet of Things platform, realizes the management functions of Internet of Things connection, query, statistics, analysis, fault judgment and so on.
l Record storage: monitor the accuracy, timeliness and reliability of data.
Railway trackside tuning and matching unit high-frequency voltage and lightning voltage detection system.
1. System purpose
l Lightning voltage monitoring: peak value, time, waveform, energy, polarity, frequency.
l High-frequency voltage monitoring: voltage size.
l Remote management: data collection of outdoor "rail side" and "equipment side" system voltages, real-time understanding of the operating status of the outdoor equipment of the frequency-shifted track circuit, prevention of external equipment failures, and rapid locating of fault points, etc.
2. System Block Diagram
3. Features
l High safety: Completely eliminate the short-circuit safety hazards that exist in the traditional contact voltage measurement method.
l Probe types: various sizes, open/closed side heads (customizable), compatible with various needs of users.
l Wide-range detection: from millivolt level tiny signal to ten thousand volt high voltage detection.
l Intelligent: self-diagnosis (input/output, power supply), self-learning (maximum, minimum, rated, threshold), self-diagnosis (interference amplitude, frequency, time).
Lightning voltage detection
1. System purpose
l Lightning voltage monitoring: peak value, time, waveform, energy, polarity, frequency.
l Circuit breaker operating voltage monitoring: peak value, time, waveform, energy, polarity, number of times.
l Remote management: data display analysis, equipment alarms, remote settings, software updates.
2. Product block diagram
3. Features
l Multiple structure probes: It is convenient for users to monitor lightning or interference according to the important path nodes of the system structure.
l Multiple monitoring methods: lightning voltage detection, transient action voltage monitoring, etc.
l Recording and storage; to ensure the accuracy, timeliness, reliability and traceability of the test data.
l Internet of things management: the use of Internet of things technology can perform real-time data query, statistics, analysis, fault judgment and other management functions.
l Internet of Things duplex: product settings and software updates can be realized remotely.
l Product intelligence: The product itself is working status monitoring and self-learning functions.