Ao910 Diffused Silicon Piezoresistive Pressure Transmitter with LCD Display 4-20mA
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- Ao910 Diffused Silicon Piezoresistive Pressure Transmitter with LCD Display 4-20mA
Basic Info.
Model NO AO920 Accuracy 0.1 Display Digital Application Industrial Function Electric Signal-controlled Installation Structure Direct Mounting Features of Measurement Medium Liquid Gas Steam Output Signal 4~20 Madc Intelligent Hart Fieldbus Protocol Inter Sensor Material 316L Power Supply DC24V (12~36V) Customization Options Customization From Samples, Customization From Des Transport Package Carton Box Trademark AUTEC Origin Fujian China HS Code 9026201090 Production Capacity 5000 Pieces/Yead Package Size 20.00cm * 20.00cm * 15.00cm Package Gross Weight 2.000kg Product Overview
The AO920 ceramic capacitive pressure transmitter adopts a ceramic capacitive sensor, combined with high-precision electronic components, and is assembled through strict process. It adopts dry pressure measurement technology without intermediate fluid. Fully leveraging the technological advantages of ceramic sensors, the pressure transmitter has excellent technical performance. It has strong overload and impact resistance, high stability, and high measurement accuracy. The AO920 ceramic capacitive pressure transmitter has multiple models, ranges, process connection forms, and materials. It can be widely used in many industrial fields such as petroleum, chemical, power, metallurgy, pharmaceuticals, and food, and can adapt to various occasions and media of industrial measurement. It is an ideal upgraded product for traditional pressure gauges and pressure transmitters, and an ideal pressure measuring instrument in the field of industrial automation.
Working Principle
The pressure of the measured medium is directly applied to the ceramic diaphragm of the sensor, causing the diaphragm to produce a small displacement proportional to the pressure of the medium. Under normal working conditions, the displacement of the diaphragm is not greater than 0.025 millimeters. After the electronic circuit detects this displacement, it is converted into a standard industrial measurement signal corresponding to this pressure. During overpressure, the diaphragm is directly attached to a sturdy ceramic substrate. As the gap between the diaphragm and the substrate is only 0.1 millimeters, the displacement of the diaphragm during overload can only be 0.1 millimeters. Therefore, the structure ensures that the diaphragm will not undergo excessive deformation. Due to the use of high-performance industrial ceramics, the sensor has strong impact and overload resistance.
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Product Parameters
• Object of use: liquid, gas, or vapor
• Measurement range gauge pressure: 0-5KPa to 3.5MPa;
• Sealed gauge pressure: 0-7MPa;
• Absolute pressure: 0-7KPa;
• Negative pressure:- 0.1MPa~2MPa
• Output 4-20mADC
• Power supply 12-36VDC
• Load characteristics 4-20mADC two-wire system
• Temperature range: ambient temperature -40 ºC~+85 ºC
• The shell protection is better than IP65
• Explosion proof type and explosion-proof type d 2 CT6; The intrinsically safe type IA 2 CT6 should be equipped with an external safety barrier
Performance indicators
• Comprehensive precision accuracy level: 0.1%, 0.2%
• Stability better than ± 0.1% FS/year
• Temperature impact within the range of -10 ºC to+60 ºC: variation less than ± 0.10%/10 ºC (0.1 level)
• Change less than ± 0.15%/10 ºC (0.2 level)-30 ºC~-10 ºC, 60 ºC~+85 ºC: variation less than ± 0.15%/10 ºC (0.1 level)
• Change less than ± 0.20%/10 ºC (0.2 level)
• When the vibration frequency is 20-200Hz in any direction, the variation is less than ± 0.02% BFSL
• The impact affects any direction with a 100G impact for 11ms, and the change is less than ± 0.02% FS
• As long as the terminal voltage of the input transmitter is higher than 12V, there will be no load impact.
• Location affects installation position but does not affect zero point
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Ao910 Diffused Silicon Piezoresistive Pressure Transmitter with LCD Display 4-20mA Instrument Model AO910 Diffused Silicon Pressure Transmitter Measuring Range A 0～1 kPa～2.5 kPa （Note1） B 0～2.5 kPa～7 kPa （Note1） C 0～7 kPa～20 kPa D 0～20 kPa～70 kPa E 0～35 kPa～100 kPa F 0～70 kPa～200 kPa G 0～100 kPa～350 kPa H 0～200 kPa～700 kPa I 0～350 kPa～1.0MPa J 0～700 kPa～2.0MPa K 0～1.0MPa～3.5MPa L 0～2.0MPa～7.0MPa M 0～3.5MPa～10MPa N 0～7MPa～20MPa O 0～10MPa～35MPa P 0～20MPa～60MPa Diaphragm Material Selection 22 316L 25 Tantalum (except for flush diaphragms) Output Signal E 4～20mADC S Intelligent HART Fieldbus Protocol Interface Basic Error 2 0.10% 3 0.20% 4 0.50% Process Connection R Standard Type M20×1.5 Male Thread T1 Flush Diaphragm Type G1/2 Male Thread 0 Processed According to User-Provided Dimensions Option M3 3 1/2 LCD Digital Display Head G Gauge Pressure Measurement A Absolute Pressure Measurement F Negative Pressure Measurement B Sealed Gauge Pressure Measurement S Radiator and Process Connection Fittings J Globe Valve (Standard Configuration: J21-160P DN6 304 M20x1.5 Female + φ14 Welded Pipe) K Condensation Bend (Standard Configuration: φ142 M201.5 Female - M201.5 Male - 304 L=29.5 PN60) 8 RS485-ModBus.RTU Communication B3 Pipe-Mounted Flat Bracket B4 L-Shaped Mounting Bracket C2 M20x1.5-Φ14 E Available with Mounting Flange (note the dimensions) X Oil-Prohibited Y Water-Prohibited and Oil-Prohibited Z Degreasing i Intrinsically Safe Type Ex ia IIC T6 d Flameproof Type Ex d II CT6 (Note 2) L Lightning Protection Q User Agreement Selection Examples AO910 - J - 22 - E - 4 - R - M3 - G Note1 Suitable for measuring non-corrosive, dust-free, and dry gases. Note2 Select a range above F for the measurement range. Note3 For ranges below 350kPa (AO910-G), the housing has vent holes and cannot achieve flameproofing. If the customer uses a gas guide cable to connect to a safe area, this range can also achieve flameproofing; please specify when ordering. Note4 For media such as sodium hydroxide, wet chlorine gas, acetic acid, and ammonia, full welding is recommended.
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