Differential pressure transmitter

Product Overview of Differential Pressure Transmitter
Differential pressure transmitter is used to prevent the medium in the pipeline from directly entering the transmitter. The pressure-sensitive diaphragm and the transmitter are connected by a capillary tube filled with fluid. It is used to measure the liquid level flow and pressure of liquid gas or steam, and then convert it into ~ signal output.
The differential pressure transmitter is suitable for viscous media that are prone to crystallization at high temperatures, precipitating media with solid particles or suspended matter, highly corrosive or highly toxic media, and can eliminate the occurrence of leakage of pressure pipes that 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. Continuously and accurately measure the interface and density, and 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. In occasions with high requirements for hygiene and cleanliness, such as in food, beverage and pharmaceutical industrial production, 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.
Product Features of Differential Pressure Transmitter
Conduct simulated online operation assessments one by one to ensure that the transmitter works stably and reliably under extreme ambient temperatures, medium temperatures, and working pressures, including positive pressure or vacuum.
Using a dynamic profile remote transmission diaphragm structure, the diaphragm will not be damaged after overloading and the accuracy will not change after long-term operation.
The filling system adopts full fusion welding and rigid sealing structure to eliminate the occurrence of oil leakage.
The novel design of the capillary tube binding component ensures that the capillary tube is reliably protected and is not easily broken when used on site.
A variety of remote transmission devices in various forms and sizes, as well as a rich variety of filling fluids, can meet the measurement needs of various occasions.
We can provide a variety of products for special needs, including high temperature, high vacuum, fast response and unequal length capillary differential meter remote transmission differential pressure transmitters.
There are four types of remote transmission devices for remote flange differential pressure transmitters
Flat remote transmission device
Threaded remote transmission device
Flange-mounted remote transmission device
Insert the barrel type remote transmission device.
Note: According to user requirements, the operating temperature of the internally filled series of silicone oil is ~+℃. The operating temperature of the internally filled high-temperature resistant silicone oil is ~+℃.
For corrosive media, choose the isolation diaphragm material.
Note: The static pressure of the remote differential pressure transmitter and the working pressure of the remote pressure transmitter also depend on the specifications of the selected flange.
The operating temperature of the remote transmission device is determined by the type of filling fluid selected.
The influence of medium temperature on the remote differential pressure transmitter means that the remote transmission devices on both sides are affected by the same temperature at the same time starting from room temperature, and the resulting output changes are caused by the remote pressure transmitter on one side. The remote transmission device is affected by temperature, resulting in output changes.
Static pressure and temperature effects are measured at the maximum range.
The maximum length of the capillary tubes on both sides of the type remote differential pressure transmitter is , and the length difference between the two sides is generally . The length of the capillary tube on one side of the type remote pressure transmitter is generally . The longest length should not exceed meters in special cases.
For details, please refer to the general technical characteristics and parameters, structural and material characteristics, product dimensions and installation forms.
Characteristics of the analog type of differential pressure transmitter
High accuracy
The zero point of the measuring range is externally continuously adjustable
Good stability
Positive migration can be achieved and negative migration can be achieved
Two-wire system
Adjustable damping and over-pressure resistance
Solid sensor design
No mechanical movable parts and less maintenance
Light weight
Full series unified structure with strong interchangeability
Miniaturized overall height
Diaphragm material contacting the medium is optional
One-sided resistance to over-pressure.
Intelligent features of differential pressure transmitter
Super measurement performance, used for pressure differential pressure, liquid level and flow measurement
Digital accuracy+
Analog accuracy++
Full Performance+br/> Months of stability
Turndown ratio
Measurement rate
Miniaturized all stainless steel flange, easy to install
Process connection is compatible with other products to achieve optimal measurement
br/> The world's only sensor patented technology using alloy sheath achieves excellent hot and cold stability
Intelligent transmitter using bit computer
Standard, with protocol-based digital signal, remote control
Supports upgrades to fieldbus and field control-based technologies.