Description atmospheric pressure sensor pressure transmitter
The capacitive pressure transmitter combines international advanced digital technology and uses digital circuits instead of analog signal amplification circuits and A/D conversion circuits to improve measurement accuracy. Adopting a standardized installation structure design, it is easy to install and use. The sensitive membrane has one-way overload protection capability, with a maximum pressure resistance of 40MPa. It has the characteristics of high reliability and good long-term stability. Capacitive pressure transmitters are divided into gauge pressure type, absolute pressure type, and differential pressure type.
Capacitive transmitters are equipped with high-performance digital circuits, carefully designed for working conditions such as radio frequency, electromagnetic interference, and surge voltage. They have strong anti-interference ability, wide power supply range, polarity protection, and comply with IEC and CE (EMC) standards. Resistance to radio frequency and electromagnetic interference; The intelligent digital temperature compensation circuit stores the calibration values corresponding to temperature changes in the chip. When the sensor is affected by temperature, it can automatically compensate, solving the temperature drift phenomenon of the sensor and improving its measurement accuracy and environmental adaptability. Widely used in fields such as pharmaceuticals, medical equipment, petroleum, gas, chemical industry, urban construction power, metallurgy, textiles, aerospace, scientific research, leak detection, and automation equipment support.
Appearance display atmospheric pressure sensor pressure transmitter
Features absolute pressure gauge
1. High precision, good stability, two-wire system.
2. Plug in printed circuit board due to body components
3. Small, lightweight, sturdy and vibration resistant.
4. The range and zero point are continuously adjustable externally, and the damping is adjustable.
5. Positive migration can reach 500%; Negative transfer can reach 600%.
6. Resistance to radio frequency and electromagnetic interference.
7. Good one-way overload protection characteristics.
8. No mechanical moving parts, low maintenance workload.
9. The entire series has a unified structure and strong interchangeability of components.
10. The membrane material in contact with the medium can be selected from corrosion-resistant materials such as 316L, TAN, HAST-C, MONEL, etc.
11. Intelligent HART fieldbus protocol.
Technical Specifications
1. Target audience: liquids, gases, and vapors.
2. Measurement range: 0-0.1kPa to 0-40MPa.
3. Output signal: 4-20mADC (special for four wire 220VAC power supply, 0-10mADC output).
4. Power supply: 12-45VDC, usually 24VDC.
5. Load characteristics: The relationship between load impedance RL and power supply voltage VS is RL<50 (VS-12).
6. Indicator: pointer type linear indication of 0-100% scale, and 31/2-digit LCD crystal display,
7. Explosion proof: a. Explosion proof type dlCT5; b. Intrinsically safe type ialCT6.
8. Range and zero point: externally continuously adjustable.
9. Positive and negative transfer: After the zero point undergoes positive or negative transfer, the absolute values of the upper and lower limits of the range and measurement range cannot exceed 100% of the upper limit of the measurement range. The maximum positive migration is 500% of the minimum calibration range; The maximum negative transfer is 600% of the minimum calibration range. The maximum positive and negative migration of the flow transmitter is 10% of the calibrated range.
10. Temperature range: The working temperature range of the amplifier is -29-+93 ℃ (LT type is -25-+70 ℃). The condition for filling silicone oil is -40~+104 ℃. When filling high-temperature silicone oil into the flange transmitter, it is+15-+315 ℃. Ordinary silicone oil is -40~+150 ℃ or can be customized for special needs.
11. Static pressure and overload pressure: 4, 10, 25, 32MPa.
12. Humidity: The relative humidity ranges from 0 to 100%.
13. Vibration influence: In any axial direction, when the vibration frequency is 200Hz, the error is ± 0.05% g of the upper limit of the measurement range.
14. Power supply impact: less than 0.005% of the output range.
15. Load impact: If the power supply is stable, the load will not be affected.
16. Installation position impact: The maximum zero point error that can be generated is 0.24 kPa, but it can be calibrated and has no other impact on the range.
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