| Customization: | Available |
|---|---|
| Brand: | Kelisaike |
| Customized: | Customized |
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The electrochemical sensor works based on the principle of controlled potential electrolysis. It is constructed by placing three electrodes in an electrolytic tank, namely, the working electrode, the counter electrode, and the reference electrode, which are applied on a certain bias voltage, and isolated from the outside by a membrane. There is an electrolyte in the tank. The measured gas passes through the membrane to the working electrode and there is a redox reaction occurred, in which the current generated is proportional to the measured gas concentration.The catalytic combustion sensor adopts the latest generation of low power consumption and high anti-interference carrier catalytic element. It forms a detection bridge with two fixed resistors. When the combustible gas in the air difuses to the surface of the detection element, the non-flame combustion proceeds rapidly under the action of the catalyst on the surface of the detection element. The reaction heat increases the resistance of the platinum wire of the detection element, and the detection bridge outputs a diferential pressure signal. The magnitude of the voltage signal is directly proportional to the concentration of the combustible gas.
When the current signal sampled by the gas sensor passes through the current-voltage conversion circuit and the voltage amplifier circuit, a voltage signal is obtained. The voltage of the signal is linearly related to the concentration of the measured gas. Meanwhile, the single-chip microcomputer carries out high-frequency sampling, data processing, and alarming points comparison for this signal, and finally controls the LCD circuit to display the corresponding concentration value. Moreover, by comparison with the alarm setpoint, it controls the alarm circuit to give out an acousto-optic and vibration alarm. The Bluetooth module or the NB-IOT/GPS positioning module (optional) wirelessly transmits the signal to the web platform or mobile APP via the Telecom NB Cloud and Telecom Cloud Server. NB-IoT refers to the cell-based narrowband internet of things technology. It is an emerging branch of technology in the IoT field that supports low-power cellular data connection in wide-area networks, also known as low-power wide-area networks (LPWAN). NB-IoT works in the licensed spectrum and can be deployed directly on the GSM, UMTS, and LTE networks, co-existing with existing networks, with a bandwidth of about 180kHz.
Along with the K700, a China Telecom industry-grade NB-IOT sim card will be ofered! The card contains a fee worth of 20 yuan for one year use and can be used directly, providing 20,000 connections a year. ( Note: the connection number is calculated through the connection management platform, which mainly calculates the number of business connections in the application layer, including sending and receiving, but not the connection number of signaling connections in the network layer.)
Note: The NB-IoT card can only be used for data transmission, not for functions such as making phone calls and sending SMS messages (the SMS function is set up on the web gas platform afer connecting to the gas platform). The billing time for the NB-IoT card is calculated from the first use. If you need to renew the service afer connecting more than 20,000 times or one year, please contact the company's customer service staf for the top-up. The top-up fee is 20,000 connections/20 yuan per year.
Service
1.For all our customers, our products have 1 year warranty, and life-long maintenance.
2.All inquiries will be replied in 24 hours.
3.We will provide technical support, our engineers will help to solve the problems you met.
4.We can provide OEM and ODM service.
5.Our factory is locating in Nanjing city, welcome to visit our factory.
6.All products will be well checked and well packed before shipment, and qualification certificatewill be provided.
Why choose KELISAIKE?
1. Mutual benefit : We are a factory, our price will be cheaper in the same quality.
2. Professional engineers: We have 3 engineers who have more than 10 years' experience and over 5 engineer assistants in gas detection line, with Hi-Tech equipments, we make more accurate and stable products.
3. Customize : We have strong R&D team, can custom product as your request.
4. Free OEM service : (a) Silk-printing your Logo(≥100PCS). (b) Design your color box(≥500PCS).
5. Mix order : We accept mix order, different model and small quantity order.
6. After service: (a) 1 Year warranty. (b) If you found any inferior-quality products from us, we will send new ones to replace for free in your next order after confirmed.
FAQ
Q: Are you a manufacturer?
A: Yes, we are the professional safety equipments manufacturer, we have over 12 years produce and market experience in this field.
Q: Are you provide customization?
A: Yes, including gas type, gas detecting range, gas alarm point etc. please contact us about the detailed specificatios.
Q: Can I order one piece for sample to test the quality?
A: Yes, We recommend to check the sample before order.
Q: If I order big quantity, what's the good price?
A: Please send the details enquiry to us, such as the Item Number, Quantity for each item, Quality request, Logo, Payment Terms, Transport method, Discharge place etc. We will make the accurate quotation to you as soon as possible.
Nanjing KELISAIKE company is one of the largest safety equipment manufactures, possesing the most complete production range and specifications in the safety equipment industry of mainland China. Nanjing KELISAIKE was founded in 2004, including three subsidiaries in Beijing, Xi'an and Xinjiang, and more than 30 domestic sales service centers, with total registered capital of 5.16 million Yuan.
We are the leader enterprise of the science and technology, persisting in creating core competencies by the core technology. In the company, there is one professional and technical talent team who masters core technology, including more than 10 senior technicans and masters.
Standard products and services cover the portable gas detector, fixed gas transmitter, wall-mounted gas detector, gas detector control unit, air breathing apparatus etc. Also Nanjing KELISAIKE is an experienced factory for OEM service, providing professional design and construction of the customize products. The products are widely used in fields of petroleum, chemical, gas transmission and distribution, warehousing, municipal gas, fire fighting, environmental protection, metallurgy, pharmacy, energy and power industry.
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