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LYA-R Thermocouple Isolation Safety Barrier
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1. The role and working principle of thermocouple isolation safety barriers:
1. The thermocouple safety barrier is a safety device used to protect thermocouple measurement systems. Its main function is to prevent damage to equipment or injury to personnel during the thermocouple measurement process due to electrical faults, overloads, or short circuits. By installing a thermocouple safety barrier, it effectively isolates the thermocouple from potential hazards, ensuring the stability and reliability of the measurement system.
2. The working principle of the thermocouple safety barrier is based on electrical isolation and current limiting protection. It introduces an isolation circuit between the thermocouple and the measurement system, amplifying and converting the weak electrical signals generated by the thermocouple while limiting the current to prevent electrical faults from damaging the measurement system. The thermocouple safety barrier also has overload protection and short circuit protection functions, which can timely cut off the circuit in abnormal situations to protect the equipment from damage.
3. The thermocouple isolation safety barrier also has the following features and advantages:
- Electrical isolation: It adopts a circuit structure that electrically isolates the input, output, and power supply from each other, which does not require a system grounding line, greatly facilitating design and on-site construction.
- Signal stability: Since the signal lines do not need to share a ground, the stability and anti-interference capability of the detection and control circuit signals are greatly enhanced, thereby improving the overall reliability of the system.
- Wide signal processing capability: It has a stronger input signal processing capability, able to accept and process signals from thermocouples, thermistors, frequencies, etc., which is not achievable by Zener-type safety barriers.
- Output isolated signals: It can output two mutually isolated signals for use by two devices using the same signal source, ensuring that the signals of the two devices do not interfere with each other, while also improving the electrical safety insulation performance between the connected devices.
2. Application of LYA-R thermocouple isolation safety barrier:
The LYA-R thermocouple isolation safety barrier is mainly used to limit the dangerous energy entering hazardous areas in safe locations, preventing electrical interference by isolating electrical signals, ensuring the safety of equipment and personnel, and enhancing the reliability of the equipment. The isolation safety barrier transmits voltage and current signals from hazardous areas, outputting a single or mutually independent dual current/voltage signal to safe areas through isolated transmission. It can also connect to a serial communication network in the safe area through a configured communication interface. It is an intelligent safety barrier product, allowing users to set the input signal type and output range through a dedicated programmer or computer. This device is widely used in industries such as chemicals, petroleum, natural gas, and electricity, and is used in many flammable and explosive work sites.
3. Technical parameters of the thermocouple isolation safety barrier:
1. Input signal: Thermocouple signal
2. Output load: ≤5500 for 4~20mA, voltage type ≥250KΩ.
3. Basic error: ±0.2%FS
4. Explosion-proof mark: [Exia]ⅡC
5. Power supply: 24VDC±5%
6. Temperature drift: ≤0.01%FS/℃
7. Insulation resistance: ≥100MΩ/500VDC between power supply, input, and output.
8. Insulation strength: 1000VAC/min
9. Power consumption: one input one output <1.4W, one input two outputs <2W
10. Operating environment: Ambient temperature 0~50℃; relative humidity ≤85%RH (avoid strong corrosive gases)
11. Installation method: Panel-mounted (DIN35 rail)
4. Warranty:
Thank you for your attention and use of products from Lingyu Technology Co., Ltd. The company promises to provide a 24-month warranty service for this product. Any quality issues that arise within the warranty period will be repaired or replaced free of charge.
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Tianjin Ling Yu Technology Co., Ltd.
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