| Customization: | Available |
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| Type: | Differential Pressure Transmitter |
| For: | Capacitive Pressure Transmitter |
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PMD3051GP/GA Pressure (gauge) / absolute pressure transmitter is a pressure signal measured by atmospheric
pressure / vacuum as the reference end, with only one port connected to the process pipe. The working principle of metal
capacitive pressure (gauge) / absolute pressure transmitter is that when the pressure acts indirectly on the surface of metal measuring diaphragm (elastic measuring element) of different thickness by isolating diaphragm and conducting pressure, the diaphragm produces small deformation, the maximum shape variable is not more than 0.1 mm, and the high precision measuring circuit converts this small deformation into a voltage signal linearly related to the differential voltage, signal. After linearization and temperature compensation, the voltage signal is converted into an industrial standard 4- 20mA current signal or 1 ≤ 5V voltage signal by using a special chip.
The high precision integrated circuit adopted by the high sensitivity of the metal capacitance pressure sensor and the
measuring diaphragm detection circuit contains the linear and temperature compensation circuit inside, so the whole
transmitter can achieve high precision and high stability.
Metal capacitive pressure sensor has high overload resistance and excellent performance in micro-pressure
measurement, and it is also a necessary product in a variety of complex industrial environment.
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Object of use
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liquid, gas, or steam
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Measurement range
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see selection specifification table
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Output signal
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4 ~ 20mA dc. Output, superimposed HART protocol digital signal (two-wire)
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Power supply
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external power supply 24V dc. , power range 12V ~ 45V
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Dangerous place installation
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flameproof ExdIIBT5Gb; Intrinsic safety ExiallCT4/T5/T6Ga;
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Migration characteristics
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when the minimum range (range compression ratio is 40: 1), the maximum positive migration zero is 39 ≤ 40 times the upper limit of the range.
The zero point of large negative migration can be the lower limit of range, and the absolute pressure transmitter has no negative migration. (no matter what the output form is, after positive and negative migration, the upper and lower limits of the range shall not exceed the limit of the range.) |
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Temperature range
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the electronic circuit board works at-40 ~ 85 °C, the sensitive element works at-40 ~ 304 °C, and the storage temperature works
at-40 ~ 104 °C. -40 ≤ 85 °C; with digital display at-25 ~ 75 °C (operation);-40 ~ 85 °C (no damage) |
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Relative humidity
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0 ~ 95%
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Overpressure limit
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range 3 to 8 subjected to 0 (absolute pressure) ~ 13.78MPa pressure transmitter is not damaged; normal working pressure in 3. 43kPa (absolute pressure) to the upper limit of the range.
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Volume variation
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less than 0.16cm3
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Damping
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the time constant is adjustable in the range of 0.2 ~ 32 s
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Installation position
inflfluence |
the maximum zero error not larger than 0.10kPa can be produced, and this error can be eliminated by correction, which has no effect on the measurement range. There is no effect on the rotation of the measuring body relative to the flflange.
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Startup time
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3s, no need to preheat.
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Accuracy
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+ 0.1%, + 0.075%
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Stability
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+ 0.2% ≤ 12 months of the maximum range
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Temperature effect
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+ 0.2% ≤ 20 °C with zero and range temperature error of maximum range
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Static pressure effect
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after the static pressure 14MPa is stable, the zero error is + 0.25% of the maximum range range, and the zero point of the transmitter can be eliminated according to the
actual static pressure adjuster before installation. After the HP static pressure 31.2MPa is stable, the zero error is less than +0.5% of the maximum range, and the zero point of the transmitter can be eliminated according to the actual static pressure adjustment before installation. |
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Power effect
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less than 0.005% / V of the output range.
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Vibration effect
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on any axis, the frequency is 200Hz and the error is + 0.05% / g of the maximum range
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Load effect
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as long as the voltage of the input transmitter is higher than 12V, there is no load effect in the load working area.
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SENTEC concentrates on the solutions for sensing technology.
For decades, SENTEC quality guaranteed products insist strictly manufactured in accordance with ISO, CE directive and fully RoHS compliant. On the basis of large-scaled production factories and international excellent devices, SENTEC inspections, tests and calibrations are well recognized throughout the world with experienced OEM service.
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