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. A0910 Accuracy 0.1% Display Digital Application Industrial Function Electric Signal-controlled Installation Structure Direct Mounting Features of Measurement Medium Liquid Gas Steam Output Signal Two Wire 4~20mA Sensor Material 316L,Tan Power Supply DC24V (12~36V) Customization Options Customization FromSamples, Customization From Des Transport Package Carton Box Trademark AUTEC Origin Fujian China HS Code 9026201090 Production Capacity 50000 Pieces/Yead Function Principle
The AO910 series diffusion silicon pressure sensor series is a new generation of measuring components produced using imported chips, carefully designed for structure, signal processing, and assembly, and tested according to national and enterprise standards. The basic principle is to use the piezoresistive effect of semiconductors and micro mechanical processing technology to fabricate a Wheatstone bridge on a specific crystal direction of a single crystal silicon wafer using semiconductor processes such as photolithography and diffusion, forming a sensitive membrane. When subjected to external forces, micro strain is generated, the resistivity changes, and the bridge arm resistance changes (one pair increases and one pair decreases). The excitation voltage signal is output, and after computer temperature compensation, laser resistance adjustment, signal amplification and other processing methods, as well as strict assembly inspection, calibration and other processes, a pressure transmitter with standard output signals is produced.
Characteristics
• Stable output with high sensitivity
The output of a typical strain gauge sensor is only about 10mv, while the full-scale output of a diffusion silicon sensor is about 100mv. The interference and noise factors have relatively small effects, and the cost of the amplification circuit is correspondingly reduced, greatly improving the resolution. There is no dead zone near zero pressure.
• High precision and good repeatability
The diffusion silicon piezoresistive pressure sensor realizes pressure sensing, pressure transmission force and electrical conversion through the same component, without intermediate conversion links, pressure hysteresis, mechanical displacement deformation, ensuring minimal repeatability and hysteresis error, good linearity, no creep, stability, reliability, and long service life.
• Good temperature characteristics
Due to the use of advanced technologies such as laser resistance adjustment and computer compensation, as well as clever control of diffusion concentration, full range temperature drift (sensitivity temperature coefficient) self compensation is achieved. Overcoming the defect of high temperature coefficient in semiconductor chips, the zero position and full temperature drift of the transmitter have reached a high level, expanding the operating temperature range.
• Suitable for applications in hazardous and explosive fields and locations
The diffusion silicon pressure sensor and transmitter have the characteristics of low current, low voltage, and low power consumption, and belong to the intrinsic safety explosion-proof product. They have obtained the explosion-proof certificate issued by the national safety explosion-proof organization.
• High reliability and anti-interference performance
Due to the use of stainless steel material and special protective structure, as well as a series of protective measures such as lightning protection, anti-interference, overvoltage, and overcurrent for amplification circuits, the product has improved its reliable sealing, anti-corrosion, and resistance to harsh working environments, making it fully suitable for the needs of general industrial field measurement and control.
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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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