AO920 ceramic capacitor pressure transmitter
- Product description
- Technical specifications
- Product portfolio
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- AO920 ceramic capacitor pressure transmitter
measuring principle
The product uses ceramic substrates and diaphragms coated with metal as electrodes.The two ceramic
components maintain a controllable gap,allowing the two metal electrodes to form a capacitor.By applying pressure, the gap between the substrate and the diaphragm changes,altering the capacitance.This change is then processed by a circuit to generate a pressure-related signal output.This dry pressure measurement technology,which does not use an intermediary liquid,fully leverages the technical advantages of ceramic sensors,such as their ability to
withstand overloads and shocks,excellent stability,and high measurement accuracy.
main features
▶ The sensor is a "E+H"dry ceramic sensor with compensation;
▶ Excellent overvoltage performance,can reach 200 times of the range;
▶ Without intermediary liquid,the sensor can obtain good measurement accuracy and is less affected by temperature;
▶ Waterproof,dustproof,shockproof,explosion-proof and corrosion-resstant; Liquid contact material:membrane (alumina ceramic),connection:316L,seal:
fluororubber;
▶ Explosion-proof:intrinsically safe(need to be used with input type safety barrier),explosion-proof;high precision,good stability;
The seismic performance is good and there are no mechanical moving parts;
▶ It has PV reset function;
The menu is rich and can set various parameters;
▶ Supports HART communication protocol;
▶ Stable backlight display,make reading the meter easier;
▶Shell material:aluminum(conventional),stainless steel;
application scenarios
It is suitable for pressure and liquid level measurement in industrial sites.According to the temperature,pressure, corrosiveness,explosion-proof requirements,safety requirements,measurement range and other working conditions of each type of medium,various products are selected.
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technical parameter
accuracy ±0.1%、±0.2%、±0.5% gage pressure 0~7MPa each interval medium Liquids,gases,vapors temperature 40.0~85℃ (direct),the extension range can be extended by adding accessories
such as pressure guiding tube,condensing bend and condenserprotect Better than IP65 stability Better than±0.1%FS/1 year Vibration effects At 20~200Hz in any direction,the variation is less than ±0.02%BFSL shock effect When the 100G impact is 11ms in any direction,the change is less than±
0.02%BFSLLoad impact As long as the terminal voltage of the transmitter is greater than 12VDC Production
optionsNo oil,no water,no oil,no fat explosion-proof ExiallCT6 Intrinsically safe,ExdlICT6 Flameproof Power Supply
Voltage2~36VDC,two-wire system signal Two-wire 4~20mA,HART -
AO920 ceramic capacitor pressure transmitter Instrument Model AO920 ceramic capacitor pressure transmitter Measurement Range A 0～10 kPa B 0～20 kPa C 0～40 kPa D 0～100 kPa E 0～200 kPa F 0～400 kPa G 0～1.0MPa H 0～2.0MPa I 0～4.0MPa Z Other Range Output Signal E 4～20mADC S Intelligent HART Fieldbus Protocol Interface Basic Error 2 0.10% 3 0.20% Process Connection A Clamp Type 1" (Suitable for Ranges Above 100kPa) (Note: Material) B Clamp Type 1 1/2" (Note: Material) C Clamp Type 2" (Note: Material) F Flange DN25 PN40 (Note: Material) G Flange DN50 PN40 (Note: Material) H Flange DN80 PN40 (Note: Material) R Standard Type M20×1.5 External Thread (Commonly Used) 0 Custom Machining per User-Provided Dimensions Options M3 3 1/2-Digit LCD Digital Display Head G Gauge Pressure Measurement A Absolute Pressure Measurement F Negative Pressure Measurement S Heat Sink and Process Connection Fittings Q Custom Specification X Oil-Free Requirement Y Water-Free and Oil-Free Requirements Z Degreasing Treatment i Intrinsically Safe Type Exia IIC T6 d Explosion-Proof Type Exd IIC T6 L Lightning Protection Selection Example AO920 - F - S - 3 - R - M3d Note1 This product must NOT be used with media containing hydrofluoric acid, acetic acid, ammonia, etc Note2 Flange with PTFE Material (Suitable for Anti-Corrosion Applications with Ranges Below 600kPa) Note3 Clamp Type 1" (Suitable for Ranges Above 100kPa)
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