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メール
wangguijiang@bjguancheng.com
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電話番号
18513000801
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アドレス
Room 104, Building C, Hongxianghong Enterprise Incubation Base, Beiqijia Town, Changping District, Beijing
Beijing Guancheng Measurement Technology Co., Ltd
wangguijiang@bjguancheng.com
18513000801
Room 104, Building C, Hongxianghong Enterprise Incubation Base, Beiqijia Town, Changping District, Beijing
Product Features
Adopting ceramic capacitive sensors or metal diffusion silicon sensors, it has wide applicability and is suitable for micro pressure measurement and vacuum measurement,
High voltage measurement, high and low temperature,Corrosion resistance pressure measurement and high cleanliness condition measurement;Equipped with analog and intelligent models, with 0.1% high precision
Degree, 10:1 wide range ratio, digital linear temperature compensation, with HART communication protocol, inherently safe, stainless steel
The shell is more suitable for clean environments.
working principle
·Ceramic capacitive dry sensor
A flat capacitor structure is composed of 96% or 99% alumina ceramic film. The medium pressure of the sensor directly acts on the ceramic transmission
Sensor membrane causes displacement of the measuring membrane. Normal pressure causes a displacement of 0.025mm in the measuring diaphragm. Overpressure only causes
Measure the displacement of the diaphragm by 0.1mm. At this point, the capacitance generated by the displacement of the diaphragm is detected by an electronic component directly connected to it,
Amplify and convert to standard signal output.
·Metal diffusion silicon piezoresistive sensor
A pressure sensor is a standard silicon resistance strain bridge made by vacuum diffusing semiconductors on a silicon substrate. It is directly connected to the tested medium
There is a layer of stainless steel corrugated sheet at the junction, and an intermediate fluid - silicone oil - is filled between the strain bridge and the stainless steel corrugated sheet. When the pressure P
Acting on the corrugated sheet and transmitted to the strain bridge through the intermediate fluid, the change in bridge resistance causes the bridge to lose balance and output a series of outputs that are proportional to the pressure
A proportional voltage signal. By amplifying the signal, the circuit is converted into a 4-20mA output.
Technical Specifications
·Measurement range
Relative pressure: maximum measurement range (0-4) MPa; Minimum measurement range (0-800) Pa
Ceramic capacitive sensor
Negative relative pressure: maximum measurement range (-0.1 to+2) MPa; Minimum measurement range (-500 to+500) Pa
Absolute pressure: maximum measurement range (0~4) MPa; Minimum measurement range (0~1) KPa
Diffuse silicon piezoresistive sensor
Relative pressure: maximum measurement range (0-35) MPa; Minimum measurement range (0-1) KPa
Absolute pressure: maximum measurement range 0~35MPa; Minimum measurement range 0~3.5KPa
·Measurement accuracy
Comprehensive error (including linearity, hysteresis, and repeatability)
Intelligent type: 0.1% standard range; Analog type: 0.2% standard range
·Long term stability
Annually ≤ ± 0.1%; Every three years ≤ ± 0.25%
·Allowable medium temperature
PMC43 type: -40 ℃ to+110 ℃; PMC47 type: -40 ℃~+135 ℃, can last for one hour at 150 ℃
·Allow ambient temperature
-40℃~+85℃
·Allow storage temperature
-40℃~+85℃
·Temperature influence
PMC43 analog type
-10℃~+60℃ 每10 K±0.15%; -40℃~-10℃、+60℃~+85℃ 每10 K ±0.2%
PMC43 Intelligent Type
-10℃~+60℃ 每10 K±0.1%; -40℃~-10℃、+60℃~+85℃ 每10 K ±0.15%
·Signal output
Analog type: 4-20mA two-wire system; On site DIP switch adjustment 0S or 2S
Intelligent type: 4-20mA two-wire system with HART communication protocol
Alarm signal: Zero point 3.6mA, full range 22mA
·Damping time
On site DIP switch adjustment 0S or 2S, adjust 0-40S using a HART communication controller or microcomputer
·Resolution
1μA
·Electromagnetic compatibility resistance
Radio frequency electromagnetic field radiation immunity
The radiation immunity induced by radio frequency field complies with GB/T17626.3-1998.10V/m and meets Class A.
Conducted immunity induced by radio frequency field
The conducted immunity of RF field induction complies with GB/T17626.6-1998. U=10V and meets Class A.
·Working power supply
Analog type: 11.5~45VDC; Intelligent type: 12~36V DC
·Contact with medium
Ceramic sensor: 96% or 99% alumina
Partial materials
Ceramic sensor sealing materials: Fluororubber, FKMViton, EPDM rubber, Perfluororubber Kalrez
Metal diffusion silicon piezoresistive sensor: stainless steel 316L
Metal diffusion silicon piezoresistive sensor sealing material: stainless steel welding
·Process connection materials
Stainless steel 304, 316L, Hastelloy C276 or other agreed upon materials
·Non contact with the medium
Partial materials
Shell made of stainless steel 304
·Vibration impact
No effect under the conditions of 2g 15HZ-150HZ and 1g 150HZ-2000HZ
·Preheating time
Simulated 200ms; Intelligent 2s
·Response time
Analog 60ms; Intelligent 230ms
·Set time
Analog 180ms; Intelligent 650ms
·Protection level
Standard IP66; Optional IP68 rating
·Allow environmental humidity
100%RH
Exterior structure
electrical connection(Wiring of analog and intelligent electronic modules)Size unit: mm, shell made of stainless steel ASI316L max.1.4Kg; Optional visual cover or blind cover. The values in parentheses indicate the size of the instrument with a visual cover
Two core cable directly connected to the wiring terminal of the electronic module
·Power supply: Analog type: 11.5~45 VDC; Intelligent type: 12~36V DC
·Cable: Analog type: Two core instrument cable Intelligent type: Shielded twisted pair cable
Wiring terminal: 0.14~2.5mm ² (AWG25~14)
·Contains polarity reversal protection circuit, resistant to high frequency and overvoltage impact
·Signal testing: The current output value can be measured using the plug on the electronic module without affecting the process measurement
·Connect the shielding layer or grounding terminal (if present) to the internal grounding terminal, do not connect to terminal 3
Instrument installation(Installation Guide)
PMC43 and PMC47 adopt the same connection method as ordinary pressure gauges, and the specific installation position depends on the requirements of the working conditions·Gas: higher than the pressure inlet·Liquid: below or level with the pressure inlet·Steam/water vapor: below the pressure inlet(It is recommended to use a circular device)Cleaning uses diffused silicon metal film sheetsMetal film cannot be squeezed or cleaned by hard objectsWall mounted and pipe mounted installationPMC43 adopts wall mounted or pipe mounted (vertical and horizontal) installation, and installation accessories need to be selectedUnit size: mm
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