HY-3051/3151 differential pressure flow transmitter is a high-performance measuring instrument used for measuring the full range of differential pressure and pressure in industrial processes, with analog or digital output signals. By installing the flange through the liquid level, the transmitter can be directly installed on the measured tank body, accurately measuring the differential pressure and liquid level of various tanks. It can fully meet your liquid level measurement needs. The HY-3051/3151 series differential pressure transmitter adopts internationally advanced metal capacitor technology and composite micro silicon solid-state sensing technology, with excellent performance and convenient use, becoming an undisputed leader in the era of automated monitoring.

The differential pressure flow transmitter adopts advanced microprocessing technology and digital communication technology. In addition to all the conventional intelligent functions, it also has a series of enhanced features, such as zero point automatic adjustment, remote on-site control parameter viewing and adjustment, control parameter password locking, etc. At the same time, remote parameter setting, remote control, self diagnosis and other functions are performed through the fieldbus HART protocol.

Fieldbus communication capability:

The fieldbus of the remote differential pressure transmitter is a bidirectional digital communication system, which is an innovative technology for configuring instrument control systems and also a promising replacement product for the widely used standard 4-20mA analog communication in field instruments.

Provide two fieldbus modes, FOUNDATION? Fieldbus low-voltage mode and PROFIBUS PA equipment are used to achieve collaborative work between AstraZeneca and other suppliers. In terms of software, two AI function blocks are used to calculate differential pressure and static pressure, thereby achieving flexible instrument configuration.

Small and lightweight design:

Due to the use of ASIC amplifier design, the packaging of the differential pressure transmitter has been reduced, and the membrane box structure and flange have been miniaturized, resulting in a weight reduction of half of the original model. ASIC design not only reduces the number of parts, but also improves the reliability of the amplifier.

Product application:

Remote differential pressure transmitters are used to measure the flow rate, liquid level, density, and pressure of gases, liquids, and vapors, and then convert them into 4-20mADC current signals for output. It is also possible to communicate with each other through the BRAN controller, CENTUM CS/μ XL, or HART275 controller for setting and monitoring purposes.

1. Super measurement performance, used 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 60 months;

6. Range ratio: 100:1;

7. Measurement rate: 0.2S;

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

9. Process connection is compatible with other products to achieve measurement;

10. The only sensor in the world that uses an H-alloy sheath (patented technology), achieving excellent cold and hot stability;

11. Intelligent transmitter using 16 bit computer;

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

13. Support the upgrade to fieldbus and field control based technologies.

1. Output signal: 4-20mA DC two-wire system (analog) Two wire system 4-20mA DC signal is superimposed with a digital signal, and the user selects linear or square root output. (Intelligent)

2. Power supply: 12-45V.DC;

3. Load characteristics:

Power supply impact:<0.005% output range/V;

Load impact: When the power supply is stable, there is no load impact;

Measurement accuracy: ± 0.1% of the calibration range, ± 0.2. The standard accuracy is ± 0.2%. If other accuracies are selected, please indicate them when ordering and selecting;

Range ratio: 10:1 or 100:1;

Damping: usually adjustable between 0.1 and 16 seconds, the time constant increases when filled with inert fluid or with a remote transmission device;

Start time:<2 seconds, no preheating required.

4. Working environment: ambient temperature -29~93 ℃ (analog amplifier);

-29~75 ℃ (digital/intelligent amplifier);

-29-65 ℃ (with display header);

The environmental humidity is 0-95%.

5. Protection features: IP65 protection capability;

6. Explosion proof type: Explosion proof Exd II BT4-6; Intrinsically safe Exia II CT5.

7. Static pressure influence: Zero position error: ± 0.5% maximum range limit, calibrated by zeroing for 32MPa under pipeline pressure.

8. Electromagnetic radiation impact: 0.05% maximum range value, accepted radiation frequency of 27-500MHz, test field strength of 3V/m.

9. Indicator (%): LCD digital display accuracy ± 0.2%.

10. Vibration effect: ± 0.05%/g when vibrating at 200Hz in any direction.

11. Installation position: The diaphragm is not installed vertically, which may result in a zero point error of less than 0.24KPa, but it can be corrected by adjusting the zero point.

12. Weight: 3.9Kg (excluding accessories).

4、 Suitable for the following media occasions:

1. Viscous media at high temperatures;

2. Medium that is prone to crystallization;

3. Settling media with solid particles or suspended solids;

4. Strong corrosive or highly toxic media;

5. Can eliminate the occurrence of pressure pipe leakage and pollution of the surrounding environment; It can avoid the tedious work of frequently replenishing isolation fluid due to the instability of measurement signals when using isolation fluid;

6. Continuous and precise measurement of interface and density;

7. The remote transmission device can avoid the mixing of different instantaneous media, thus enabling the measurement results to truly reflect the actual situation of process changes;

8. Places with high hygiene and cleanliness requirements;

9. In the production of food, beverage, and pharmaceutical industries, not only is it required that the contact area of the transmitter with the medium meet hygiene standards, but it should also be easy to rinse to prevent cross contamination of different batches of media.