High hydrostatic pressure transmitter

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ZWA440A series high hydrostatic pressure transmitter is a new type of transmitter manufactured by ad…

I. Product Overview:

ZWA440A series high hydrostatic pressure transmitter is a new type of transmitter manufactured by advanced technology and equipment from abroad. The key raw materials, components and components are all imported. After rigorous assembly and testing, the whole machine has the characteristics of advanced design principle, complete varieties and specifications, simple installation and use. Because the exterior of the model is fully integrated with the current domestic Z is popular, it has strong versatility and substitution ability. In order to adapt to the continuous improvement and development of domestic automation level, this series of products not only have compact and exquisite design, but also have the intelligent function of HART Fieldbus protocol.

2. Small lightweight design:

ZWA440A series high hydrostatic pressure transmitter uses ASIC amplifier design to reduce packaging, as well as diaphragm box construction and flange miniaturization, the weight of this model has been reduced to half of the original model. ASIC design not only reduces the number of parts, but also improves the reliability of the amplifier.

3. 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.

Fieldbus mode:

ZWA440A series high hydrostatic pressure transmitters provide two Fieldbus modes, FOUNDATION? Fieldbus low voltage mode and PROFIBUS PA equipment, in order to achieve Yokogawa Motor and other suppliers'collaboration. In software aspect, ZWA440 series uses two AI function blocks to calculate differential pressure and static pressure, thus realizing flexible instrument configuration.

Fourth, main characteristics:

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

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

3. Stability: 0.25% for 60 months;

4. Range ratio: 100:1;

5. Measurement rate: 0.2S;

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

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

8. The sensor (technology) with H-alloy sheath has achieved excellent cold and thermal stability.

9. Using 16-bit computer;

10. Standard 4-20mA, with HART-based digital signal, remote control supports upgrading to fieldbus and field control technology.

Technical parameters:

1. Targets: liquids, gases and vapors;

2. Measurement range: 0-40 Mpa;

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: related to power supply, with load capacity at a certain power supply voltage; 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).