The single flange differential pressure transmitter adopts advanced microprocessing technology and digital communication technology. In addition to all the functions of conventional intelligent models, it also has a series of enhanced functions, such as zero-point automatic adjustment, remote local control parameter viewing and adjustment control parameter password locking. At the same time, remote parameter setting, remote control, self-diagnosis and other functions can be carried out through the fieldbus HART protocol.
Fieldbus communication capabilities:
The fieldbus of the single-flange remote differential pressure transmitter is a two-way digital communication system. It is an innovative technology for configuring instrument control systems. It is also a promising replacement product for replacing the standard 4 widely used in current field instruments. ~20mA analog communication.
Two fieldbus modes are provided, FOUNDATION? fieldbus low-voltage mode and PROFIBUS PA equipment to enable collaborative work between Asder and other suppliers. In terms of software, two AI function blocks are used to calculate differential pressure and static pressure to achieve flexible instrument configuration.
Small and lightweight design:
The single-flange differential pressure transmitter uses an ASIC amplifier design to make the package smaller, as well as the capsule structure and flange miniaturization. The weight of this model is reduced to half of the original model. The ASIC design not only reduces parts count but also improves the reliability of the amplifier.
4. Product application of single flange differential pressure transmitter:
The single flange remote differential pressure transmitter is used to measure the flow, liquid level, density and pressure of gas, liquid and steam, and then convert it into a 4-20mADC current signal output. You can also communicate with each other through BRAIN handheld communicator or CENTUM CS/μXL or HART275 handheld communicator, and perform settings and monitoring through them.
Main features of single flange differential pressure transmitter:
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% 60 months;
6. Range ratio: 100:1;
7. Measurement rate: 0.2S;
8. Miniaturized (2.4kg) all stainless steel flange, easy to install;
9. The process connection is compatible with other products to achieve measurement;
10. The world's best sensor using H alloy sheath (patented technology), achieving excellent cold and thermal stability;
11. Intelligent transmitter using 16-bit computer;
12. Standard 4-20mA, with digital signal based on HART protocol, remote control;
13. Support upgrades to fieldbus and field control-based technologies.
Technical parameters of single flange remote differential pressure transmitter:
1. Output signal: 4~20MA.DC two-wire system (analog). Digital signal is superimposed on the two-wire system 4~20mA DC signal. The user can choose linear or square root output. (intelligent)
2. Power supply: 12~45V.DC;
3. Load characteristics:
Power supply impact: <0.005% output range/V;
Load influence: When the power supply is stable, there is no load influence;
Measurement accuracy: ±0.1% of the adjustment range, ±0.2. The standard accuracy is ±0.2%. If you choose other accuracy, please indicate it when ordering and selecting;
Measuring range ratio: 10:1 or 100:1;
Damping: usually adjustable between 0.1 and 16 seconds. When filled with inert liquid or equipped with a remote transmission device, the time constant will increase;
Start-up time: <2 seconds, no preheating required.
4. Working environment: ambient temperature -29~93℃ (analog amplifier);
-29～75℃ (digital/intelligent amplifier);
-29～65℃ (with display meter);
Ambient humidity 0~95%.
5. Protection characteristics: protection capability IP65;
6. Explosion-proof type: explosion-proof type Exd II BT4-6; intrinsically safe type Exia II CT5.
7. Influence of static pressure: Zero error: ±0.5% very large range limit, corrected by zero adjustment under pipeline pressure of 32MPa.
8. Effect of electromagnetic radiation: 0.05% very large range value, accepted radiation frequency 27~500MHz, test field strength 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: If the diaphragm is not installed vertically, a zero point error of less than 0.24KPa may occur, but it can be corrected by zero adjustment.
12. Weight: 3.9Kg (excluding accessories).
Single flange differential pressure transmitter is suitable for the following media occasions:
1. Viscous medium at high temperature;
2. Medium that is easy to crystallize;
3. Precipitating media with solid particles or suspended matter;
4. Strongly corrosive or highly toxic media;
5. It can eliminate the occurrence of leakage of the pressure guide tube and pollute the surrounding environment; it can avoid the tedious work of frequently replenishing the isolation fluid due to the instability of the measurement signal when using isolation fluid;
6. Continuously and accurately measure interface and density;
7. The remote transmission device can avoid the mixing of different instantaneous media, so that the measurement results truly reflect the actual situation of process changes;
8. Occasions with high hygiene and cleaning requirements;
9. For example, in the production of food, beverage and pharmaceutical industries, not only the parts of the transmitter that contact the medium are required to comply with hygienic standards, but also should be easy to flush to prevent cross-contamination of different batches of media.
