The Flange Mounted Differential Pressure Transmitter is based on an intelligent differential pressure transmitter and features a flush-mounted or extended flange. It is suitable for measuring the level, differential pressure, and density of liquids that are prone to crystallization or sedimentation. Equivalent to model EJA210E.
Can be directly installed on tanks or pipelines. It is used for measuring high-temperature, easily solidifying or crystallizing, suspended solids-containing, highly viscous, highly corrosive, or other media that require hygienic conditions and cannot be contaminated.
Sino-Inst offers a variety of flange-mounted DP transmitters for industrial pressure measurement. If you have any questions, please contact our sales engineers.
Sino-Inst Flange Mounted Differential Pressure Transmitter uses advanced microprocessing technology and digital communication technology. It outputs a 4~20 mA DC signal corresponding to the measured differential pressure. It can also be configured with the HART protocol.
Flange Mounted Differential Pressure Transmitter Features:
Extended reading: Smart Differential Pressure Transmitter
Specification of Flange Mounted Differential Pressure Transmitter
| Model | Transmitter type | |||
| SMT3151LT | Flange Mounted Differential Pressure Transmitter | |||
| Code | Scale range | |||
| 4 | 0-4.0～40kPa(0-400～4000mmH2O) | |||
| 5 | 0-20～200kPa(0-2～20mH2O) | |||
| 6 | 0-70～700kPa(0-7～70mH2O) | |||
| 7 | 0-210～2100kPa(0-21～mH2O) | |||
| Code | Output form | |||
| E | Linear output 4-20mAdc | |||
| SF | Linear output 4-20mAdc +HART signal | |||
| F | MODBUS-485 signal | |||
| Code | Flange standard (high pressure side flange) | |||
| A | ANSI American Standard (HG20615) | |||
| D | DIN European Standard (HG20592) | |||
| Code | Process connection size | |||
| ANSI American Standard (HG20615) | DIN European Standard (HG20592) | |||
| 25 | 1” | DN25 | ||
| 40 | 1.5” | DN40 | ||
| 50 | 2” | DN50 | ||
| 80 | 3” | DN80 | ||
| 0 | 4” | DN100 | ||
| Code | Process connection pressure rating | |||
| ANSI American Standard (HG20615) | DIN European Standard (HG20592) | |||
| A | 150LB | PN16/25 | ||
| B | 300LB | PN40 | ||
| C | 600LB | PN64 | ||
| D | 900LB | PN100 | ||
| Code | High pressure side diaphragm | |||
| A | 316 stainless steel | |||
| B | Hastelloy C | |||
| C | Monel | |||
| D | Tantalum | |||
| E | Titanium | |||
| F | Special Requirements | |||
| Code | High pressure side insert tube length | High pressure side insert cylinder material | ||
| A | 0 mm | None | ||
| B | 50 mm | 316L Stainless steel | ||
| C | 150 mm | 316L Stainless steel | ||
| D | 200 mm | 316L Stainless steel | ||
| Code | High pressure side filling fluid | |||
| D | General silicone oil （-40~104℃） | |||
| F | High temperature silicone oil （-40~304℃） | |||
| S | Inert liquid （-40~204℃） | |||
| Low pressure side structural material | Flange (joint) | Exhaust/drain valve | Isolation diaphragm | Sensor filling fluid |
| 22 | 316 Stainless steel | 316 Stainless steel | 316 Stainless steel | Silicone oil |
| 23 | 316 Stainless steel | 316 Stainless steel | Hastelloy C | Silicone oil |
| 24 | 316 Stainless steel | 316 Stainless steel | Monel | Silicone oil |
| 25 | 316 Stainless steel | 316 Stainless steel | Tantalum | Silicone oil |
| 33 | Hastelloy C | Hastelloy C | Hastelloy C | Silicone oil |
| 35 | Hastelloy C | Hastelloy C | Tantalum | Silicone oil |
| 44 | Monel | Monel | Monel | Silicone oil |
| S2 | A remote transmission device (with a remote transmission device on the low-voltage side) | |||
| Code | Shell material | Conduit inlet dimensions | ||
| A | Low copper aluminum alloy polyurethane coating | M20×1.5 | ||
| B | Low copper aluminum alloy polyurethane coating | 1/2-14 NPT | ||
| C | Stainless steel | M20×1.5 | ||
| D | Stainless steel | 1/2-14 NPT | ||
| Code | Optional parts | |||
| M1 | 0～100% Linear indicator head | |||
| M4 | LCD multi – power digital display head | |||
| D1 | Side discharge valve at the top (only for the low pressure side of the low pressure side without remote transmission) | |||
| D2 | Side discharge valve at the top (only for the low pressure side of the low pressure side without remote transmission) | |||
| Da | Flameproof ExdIIBT5Gb;(explosion-proof certificate no. : CE16.1163) | |||
| Fa | Intrinsically safe ExiaIICT4 / T5 / T6Ga;(explosion-proof certificate no. : CE15.2354X) | |||
| CX | With corresponding 316 flushing ring |
Extended Reading:
Applications
The Flange Mounted Differential Pressure Transmitter can accurately measure the liquid level and density of various containers. There are two types of flat flange and insert flange. It is suitable for high-viscosity medium or suspended liquid measurement.
- Viscous medium at high temperature;
- Easily crystallized medium;
- Precipitation medium with solid particles or suspended matter;
- Strongly corrosive or highly toxic medium;
- It can eliminate the leakage of the pressure guiding pipe and pollute the surrounding environment. It can avoid the instability of the measurement signal when the isolation liquid is used. The tedious work of frequently supplementing the isolation liquid is required;
- Continuously and accurately measure the interface and density;
- 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;
- Places with high sanitation requirements;
- Such as in the production of food, beverage, and pharmaceutical industries. Not only the transmitter contacting the media parts meet hygienic standards, but also should be easy to wash. To prevent cross-contamination of different batches of media.
Pressure level transmitter is good for level measurement. Most of the time, we use submersible hydrostatic level sensor for the level measurement. When you can not use the probe of hydrostatic level sensor, you can try with this pressure level transmitter. Pressure level transmitter, is one type of DP level measure instrument, with the diaphragm.
The SMT3151LT differential pressure level transmitter is a new type of differential pressure transmitter manufactured using advanced technology and equipment. Equipped with dual remote seals, it can be used for continuous measurement of liquid level, flow rate, and differential pressure. It offers particular advantages in applications involving sealed storage tanks.
Flange Mounted Differential Pressure Transmitter Working principle
Differential pressure transmitters utilize the pressure difference generated by the liquid’s own gravity to measure the liquid level in a container.
Flange-mounted differential pressure transmitters are directly installed on pre-existing flanges at the bottom of pipes or containers, contacting the liquid through an isolation diaphragm.
When the diaphragm is subjected to pressure, it undergoes slight deformation. The displacement of the diaphragm changes with the differential pressure. This change is precisely converted by an amplification circuit into a 4-20mA DC two-wire current, voltage, or digital HART output signal, thus achieving pressure measurement and transmission.
The high-pressure side measuring tube is always filled with the medium, maintaining constant pressure. The low-pressure side measuring tube forms a communicating vessel with the container, and its pressure changes linearly with the liquid level in the container.
Let △P be the differential pressure signal received by the transmitter, P0 be the internal pressure of the container, P+ be the pressure on the positive pressure side of the transmitter, and P- be the pressure on the negative pressure side of the transmitter. Let ρ be the density of the liquid in the container, g be the acceleration due to gravity, h1 be the height from the process zero point to the upper pressure tap of the container, h2 be the process liquid level in the container, and h be the height from the transmitter to the process liquid level zero point.
Then:
P+ = P0 + ρgh1 + ρgh
P- = P0 + ρgh2 + ρgh
△P = P+ – P- = ρgh1 – ρgh2
When the liquid level changes from h2=0 to h2=h1, the differential pressure measured by the transmitter changes from its maximum value to △P=0. By configuring the transmitter, the output current changes from 4mA to 20mA.
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Single flange vs Double flanges differential pressure level transmitter
- In principle: all are differential pressure transmitters + flange guide pressure;
- In terms of structure: the single flange liquid zd position transmitter has only one flange diaphragm box connected to the high pressure side, and the low pressure side to the atmosphere. The double flange liquid level transmitter is high and low pressure side through oil-filled capillary It is connected with two flanged membrane return boxes. There is also a capillary. The single flange transmitter is installed below, and a capillary is drawn from the low pressure side of the single flange transmitter to the upper flange membrane box.
- In terms of engineering applications: all can only measure the liquid level of fixed density. The single-flange transmitter can only be used for the liquid level of atmospheric equipment that can be imagined with the atmosphere. The double-flange transmitter can be suitable. Answer: Use closed equipment kettle to measure liquid level;
- From the economical point of view, the double flange is definitely more expensive than the single flange. After all, there is one more flange capsule and capillary.
Piezoresistive Differential Pressure Transmitter utilizes the piezoresistive effect of semiconductor silicon materials. Realize accurate measurement of differential pressure.
Smart Differential Pressure Transmitter measures industrial differential pressure. Can Works with diaphragm seals, capillary, HART. Outputs standard signals (such as 4 ~ 20mA, 0 ~ 5V).
When the process medium should not come into contact with the pressured parts of the measuring instrument. Diaphragm sealed pressure transmitters are used for pressure measurement.
High-temperature pressure transmitters with a 4-20mA output.
which has a temperature capability of over 850 °C and is not pyroelectric.
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Sino-Inst is one of the most excellent DP transmitters, pressure transmitters, and level transmitters suppliers. Sino-Inst can offer you a complete solution for pressure transmitters.
Sino-Inst can offer you with Flange Mounted Differential Pressure Transmitters. Our transmitters can work for you just like EJA210E.
Our Flange Mounted Differential Pressure Transmitters are widely exported to various countries. Including USA, UK, Argentina, Singapore, etc. If you need to purchase Flange Mounted Differential Pressure Transmitter, or have related technical questions, please feel free to contact our sales engineers!
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Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.