Single Crystal Silicon Differential Pressure Transmitter

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ZWA11OA series single crystal silicon differential pressure transmitter is a new type of transmitter…

I. Product Overview:

ZWA11OA series single crystal silicon differential pressure transmitter is a new type of transmitter which imports advanced technology and equipment from abroad. The key raw materials, components and components are all imported. The whole machine has been rigorously assembled and tested. The product has the characteristics of advanced design principle, complete varieties and specifications, simple installation and use. Because the appearance of the model is fully integrated with the current domestic fashion, it has strong versatility and substitution ability.

2. Fieldbus communication capability:

Fieldbus is a bidirectional digital communication system, an innovative technology for configuring instrumentation control system, and also a promising replacement product. It is used to replace the standard 4-20mA analog communication widely used in field instruments.

Two Fieldbus modes, FOUNDATION? Fieldbus low voltage mode and PROFIBUS PA equipment, are provided to achieve the collaboration between Zhongwei and other suppliers. In software aspect, ZWA110A series uses two AI function blocks to calculate differential pressure and static pressure, thus realizing flexible instrument configuration.

3. Excellent performance and stability:

ZWA11OA series single crystal silicon differential pressure transmitter adopts single crystal silicon resonant sensor technology. Monocrystalline silicon is an ideal material because it does not lag behind the change of pressure or temperature. The single crystal silicon resonant sensor reduces the influence of overvoltage, temperature change and static pressure to Zui low, thus providing unparalleled long-term stability.

4. Miniaturized lightweight design:

ZZWA11OA series single crystal silicon differential pressure transmitter reduces the weight of this model to half of the original model due to the use of ASIC amplifier design to reduce packaging, as well as the miniaturization of diaphragm box construction and flange. ASIC design not only reduces the number of parts, but also improves the reliability of the amplifier.

5. Product application:

ZWA11OA series single crystal silicon differential pressure transmitter is used to measure the flow, liquid level, density and pressure of gas, liquid and steam, and then convert it into current signal output of 4-20 mADC. ZWA11OA can also communicate with each other through BRAIN or HART 375, 475, through which to set and monitor.

6. Main characteristics:

1. Super measurement performance for pressure, differential pressure, liquid level and flow measurement;

2. Digital accuracy: +(-) 0.2%;

3. Simulation accuracy: +(-) 0.75% +(-) 0.1% F.S.

4. Full performance: +(-) 0.25F.S.

5. Stability: 0.25% for 6 months;

6. Range ratio: 100:1;

7. Measurement rate: 0.2S;

8. Miniaturized (2.4kg) stainless steel flange, easy to install;

9. Process connection is compatible with other products to realize measurement.

10. In the world, H-alloy sheathed sensors (technology) have been used to achieve excellent cold and thermal stability.

11. Using 16-bit computer;

13. Standard 4-20mA, with HART protocol based digital signal, remote control;

13. Support the upgrading of fieldbus and field control technology.

Technical parameters:

1. Targets: liquids, gases and vapors;

2. Measurement range: 0-1600-10000KPa;

3. Output signal: 4-20mA DC (special for four-wire system); 220V AC power supply, 0-10mA DC output;

4. Power supply: 12-45V DC, generally 24V DC;

5. Load characteristics: It is related to power supply. The load capacity at a certain power supply voltage is shown in Figure 3. The relationship between load impedance RL and power supply voltage Vs is: RL < 50 (Vs-12).

6. Indicator table: pointer linear indicator 0-100% calibration and LCD liquid crystal display;

7. Explosion-proof grade: a: Exd II BT5 or Exd II CT6; b: intrinsically safe type (Exia II CT6 or Ex IB II CT6);

8. Range and Zero: External continuous adjustable;

9. Positive and negative migration: The absolute values of range, upper limit and lower limit of measurement range can not exceed 100% of the upper limit of measurement range after positive or negative migration of zero. The positive migration of Zui is 500% of the calibration range of Zui minor adjustment.

8. Cautions for use: