JZ-3851APintelligenceAbsolute pressure transmitterIt is produced by our companyUsing capacitive pressure detection components, the sensor converts the absolute pressure signal into4～20mAOr output other standard signals to secondary meters such as digital displays, regulators, recorders, etcDCSSystem. It can measure the absolute pressure of media such as liquids, gases, and vapors, as well as data such as liquid level and flow rate that are proportional to pressure.

JZ-3851The intelligent pressure transmitter adopts an intelligent motherboard,haveHARTProtocol communication function. Can be withHARTThe handheld device communicates to achieve remote settings and monitoring functions. it's fine tooRealize on-site zero adjustment, configuration and other operations through button pressing.

1、 Composition and schematic diagram of intelligent pressure transmitter:

The intelligent pressure transmitter consists of two parts: an intelligent sensor and an intelligent electronic board. The intelligent sensor part includes a capacitive sensor, a measuring diaphragm detection circuit, a temperature sensor, and a temperature compensation circuit; The intelligent electronic board part includes a microcomputer controller and peripheral circuits, which complete the pressure signal to4～20mADCThe conversion.

2、 Technical parameters:

1. Performance specifications: (Zero benchmark calibration range, under reference conditions, filled with silicone oil),316LStainless steel isolation membrane. ）

（1）Reference accuracy:

①Digital and intelligent: ±0.2%Verify full range;

②Simulation, linear: ±0.5%Verify the measuring range.

（2）Stability:

①Digital and intelligent:6Months, ±0.1%URL；

②Simulation, linear:6Months, ±0.2%URL.

（3）Environmental temperature impact:

①Digital and intelligent: Zero point error: ±0.2%URL/56℃Overall error: ±(0.2%URL+0.18%Verification range)/56℃；

②Simulation, linear: Zero point error: ±0.5%URL/56℃Overall error: ±(0.5%URL+0.5%Verification range)/56℃；

（4）Vibration effect: In any axial direction,200HzThe impact of vibration is ±0.05%URL/g
（5）Power supply impact: less than ±0.005%output range/Volt.

（6）Load impact: There is no load impact unless there is a change in the power supply voltage.

（7）Electromagnetic interference/RF interference（EMI/RFIImpact: by20to1000MHzThe field strength has reached30V/MWhen the output drift is less than ±0.1%Range.

（8）Installation location impact:

Zero drift is at most ±0.25kPaAll zero drift can be corrected; Has no impact on the measurement range.

2. Functional specifications:

（1）Measurement range:0～0.125～41370KPa
（2）Zero point and range:

①Digital and intelligent: can be adjusted using the local range and zero buttons, orHARTRemote adjustment of handheld device;

②Simulation, linear: The range and zero point are continuously adjustable.

（3）Zero positive and negative migration: When zero negative migration occurs, the lower limit of the range must be greater than or equal to-URLWhen the zero point is shifted forward, the upper limit of the range must be less than or equal to+URLThe verification range must be greater than or equal to the minimum range.
（4）Output:

①Digital and intelligent:4～20mA DCUsers can choose linear or square root output. Digital process variables are superimposed on4～20mAOn the signal, available for useHARTThe use of the upper computer for the protocol
①Simulation, linear:4～20mA DC,Linear with process pressure.

3、 Outline dimension diagram and installation diagram of pressure transmitter:

4、 Pressure transmitter selection table: