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.
