Intelligent pressure transmitter

Intelligent pressure transmitterThe whole machine has undergone strict assembly and testing, and this series of transmitter products has the characteristics of design principles, complete varieties and specifications, and simple installation and use. Due to the fusion of the structural characteristics of two popular and widely used transmitters in the appearance of this model, it gives users a refreshing feeling. At the same time, it can be directly replaced with traditional 1151, CECC and other series products in installation, with strong universality and substitution ability. To adapt to the continuous improvement and development of automation. In addition to being compact and exquisite, this series of products also introduces intelligent functions with HART fieldbus protocol.

Pressure transmitters are used to measure the liquid level, density, and pressure of liquids, gases, or vapors, and then convert them into 4-20mA DC signal outputs.

The intelligent pressure transmitter can communicate with the HART controller for setting, monitoring, or forming an on-site monitoring system with the upper computer.

The on-site adjustable intelligent pressure transmitter is a new product developed by our company according to on-site requirements. It can be operated without a manual controller and can achieve on-site zero adjustment, configuration, and other operations through button pressing.

specification

Media used: liquids, gases, and vapors.

Power supply: The power supply is 10.5-55VDC, and the general working power supply is 24VDC.

Positive and negative migration: Differential pressure transmitter: * The large positive migration is the difference between the upper limit of the measurement range (the same below URL) and the measurement range; *URL with high negative migration volume. Pressure transmitter: * The large migration value is the difference between the URL and the measurement range;

The large negative migration amount is not greater than atmospheric pressure:

Pressure transmitter: * The positive displacement is the difference between the URL and the measurement range; Positive and negative migration.

Fault alarm: The self diagnostic program detects a fault and simulates an alarm at 20.8mA or below 3.8A. The low flag can be selected through the switch on the electronic component.

Insulation resistance: The insulation resistance between the grounding terminal of the circuit board and other terminals shall not be less than 20M Ω.

Measurement range: Electronic circuit: -40-+85 ℃ Sensitive components (filled with silicone oil): -40-+104 ℃ (filled with inert oil); 0 - +71℃

Storage temperature: -40-+55 ℃

Start time: * High damping time<2s

Volume suction capacity:<0.16cm3

Damping: The electrical damping is 0-32s and can be adjusted at intervals of 0.1s. The natural time of the sensitive component (filled with silicone oil) is 0.2s, and the range code 3 is 0.4s.

parameter

Accuracy:Intelligent pressure transmitterThe accuracy varies with the range, ranging from ± 0.1% to ± 0.5%.

Stability: Within six months, the accuracy of the transmitter shall not exceed.

Temperature effect: (For CP and GD transmitters, range code 4-9) Total error<± 0.3% * Large range value, for every 10 ℃ change: Other transmitters and their ranges, the above error values will double.

Static pressure influence: CP class

Zero point error: For a large limit of 14MPA ± 0.25% * or ± 0.2% (range code 3), correction is given by zeroing under pipeline pressure.

Range error: HP class

Zero point error: ± 0.5% * large range limit, for 32MPA, correction is given by zeroing under pipeline pressure.

Vibration effect: 0.1% * large range limit, 10-55HZ, S=0.15mm, in any direction.

Power supply impact: less than 0.005%/V of the output range.

Installation position influence: When the sensing diaphragm is not vertical, a zero point system error of no more than 0.24KPa may occur, but this error can be eliminated by adjusting the zero point without affecting the range.

Structural materials: For parts that come into contact with media such as pressure chambers, joints, relief valves, and isolation diaphragms, please refer to the selection manual for intelligent capacitive pressure/differential pressure transmitters. The electrical casing is made of low copper aluminum alloy, and the surface of the electrical casing is coated with polyurethane ethylene resin paint.

Pressure connection: The connection holes on the pressure chamber are 1/4-18NPT, and the connection holes on the impulse joint are 1/2-14NPT. The center distance can be changed by changing the connection.

Electrical connection: The transmitter housing has 2 M2 * 1.5 screw holes for connecting wire conduits, and there are measurement terminals inside the housing. When connected to the communicator, it must be fixed on the measuring screw.

Weight: Approximately 3.9kg (excluding accessories).

Pressure transmitter manufacturer