SI-3151 DLT Differential Pressure Level Transmitter measures the difference in pressure between two points in a system, converting it into an electrical signal for level monitoring.
To prevent the medium in the pipeline from entering the transmitter directly, the medium and the transmitter are connected by a capillary filled with fluid.
Differential Pressure Level Transmitter is commonly used in industries like oil and gas, water treatment, and chemical processing. It is used to measure the liquid level, flow and pressure of liquid, gas or steam, and then convert it into 4~20mA DC signal output.
Features of SI-3151 DLT Differential Pressure Level Transmitter
SI-3151 DLT differential pressure level transmitter can avoid direct contact between the measured medium and the isolation diaphragm of the transmitter. This measurement method is suitable for the following situations:
- The measured medium has a corrosive effect on the sensitive components of the transmitter;
- It is necessary to isolate the high-temperature measured medium from the transmitter;
- There are solid suspended matter or high viscosity medium in the measured medium;
- The measured medium is easy to solidify or crystallize while being guided by the pressure tube;
- To replace the measured medium, the measuring head must be strictly purified;
- The measuring head must be kept hygienic and pollution is strictly prohibited. Objects of use: corrosive or viscous liquids;
Note: Remote transmitters should not be used in vacuum situations.
SI-3151 DLT Differential Pressure Level Transmitter Specifications
| Item | Specification |
| Measuring Range | 4.0 KPa – 10.0 MPa |
| Turndown Ratio | 50:01:00 |
| Power Supply | 10.5V – 45V DC (Intrinsically Safe Barrier Power Supply ≤ 30V DC) |
| Output | 4mA – 20mA DC and HART Communication |
| Ambient Temperature | -40℃ – 85℃ |
| Medium Temperature | -40℃ – 100℃ (Silicone Oil Filled) |
| Accuracy | ≤ (0.0029r + 0.071)% |
| Temperature Drift | ≤ (0.08r + 0.1)% (-10℃ – 60℃), ≤ (0.1 + 0.15)%/10℃ (-40℃ – -10℃; 60℃ – 85℃) |
| Long-term Drift | ≤ 0.15r%/5 years |
| Enclosure Protection Rating | IP67 |
| Explosion-proof Rating | EX iaⅡCT6 or EX dⅡCT6 |
| Corrosion Resistance | Choose appropriate measuring material based on different media |
There are 4 types of remote transmission devices for SI-3151 DLT Differential Pressure Level Transmitter series differential pressure level transmitter:
- 1191PFW flat remote transmission device (standard 3″, working pressure 2.5MPa)
- 1191RTW type screw-mounted remote transmission device (maximum working pressure 10MPa)
- 1191RFW flange-mounted remote transmission device
- 1191EFW type inserting cylinder remote transmission device (standard 3″ or 4″, working pressure 2.5MPa)
Differential Pressure Transmitter for Liquid Measurement
Differential pressure level measurement is a widely used method that involves measuring the pressure difference between the top and bottom of a container. This technique is suitable for various applications due to its accuracy, reliability, and cost-effectiveness.
The double flange level transmitter is a differential pressure transmitter. It obtains the liquid level height by measuring the differential pressure value of the medium and then according to Pascal’s law. It is mainly used to measure the liquid height in the pressure vessel.
The Differential Pressure Level Transmitter is generally installed on the pressure vessel, and the installation method is side-mounted. During installation, the flange of the double-flange liquid level transmitter and the verticality of the transmitter head should be guaranteed. Otherwise, measurement errors will be caused.
The lower flange of the double-flange liquid level transmitter is the positive pressure side, which is installed on the lower side of the tank in contact with the liquid medium.
The upper flange of the double-flange liquid level transmitter is the negative pressure side, which is installed on the upper side of the tank body and is in contact with the gas medium.
Assume that P2 of the pressure sensed by the flange under the Differential Pressure Level Transmitter, P2=P0+P.
The pressure sensed by the flange on the double flange liquid level transmitter is P0, then the differential pressure value output by the double flange liquid level transmitter is ΔP=P2-P0=P.
In the formula: P2——the pressure sensed by the lower flange of the double flange liquid level transmitter;
P0 – pressure of the gas medium on the upper side of the tank;
P – static pressure of liquid medium
Therefore, the differential pressure value output by the Differential Pressure Level Transmitter represents the liquid height.
Therefore, according to Pascal’s law, it can be known that liquids of the same density are at the same depth, and the pressure of the liquid in all directions is equal.
The Differential Pressure Level Transmitter calculates the height of the medium based on the differential pressure value measured by this principle.
Its formula is:
In the formula: H – the height of the liquid medium measured by the double flange liquid level transmitter;
P – static pressure of liquid medium;
ρ – the density of the liquid medium;
g – acceleration due to gravity
Differential Pressure Level Transmitter is mainly used for process measurement, its small size is easy to install. The verification work of the double-flange liquid level transmitter usually adopts offline verification, which not only saves energy but also improves efficiency, which is convenient and quick.
Order Guide
| SI-3151 DLT; | Differential Pressure Level Transmitter | ||||||
| Code | Range KPa | ||||||
| 3 | 0-1.3～7.5 | ||||||
| 4 | 0-6.2～37.4 | ||||||
| 5 | 0-31.1～186.8 | ||||||
| 6 | 0-117～690 | ||||||
| 7 | 0-345～2068 | ||||||
| 8 | Customized range | ||||||
| Code | Output | ||||||
| E | 4-20mADC | ||||||
| S | HART | ||||||
| Code | Flange standard (high pressure side flange) | ||||||
| 22 | 316SST | ||||||
| Code | Additional features | ||||||
| S1 | One remote device | ||||||
| S2 | Two remote devices | ||||||
| Code | Options | ||||||
| M1 | 0-100% linear indicator | ||||||
| M2 | LED display | ||||||
| M3 | LCD display | ||||||
| B1 | Pipe bend bracket | ||||||
| B2 | Board Mount Bend Bracket | ||||||
| B3 | Tube Mounted Flat Bracket | ||||||
| d | Flameproof dⅡBT4 | ||||||
| i | Intrinsically safe type iaⅡCT6 | ||||||
Frequently
Asked
Questions
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Introducing the SI-3151 DLT Differential Pressure Level Transmitter, a state-of-the-art solution for accurate and reliable level measurements in various industries.
SI-3151 DLT combines advanced technology with a robust design to deliver exceptional performance in even the most demanding applications.
Sino-Inst, a professional Differential Pressure Level Transmitter manufacturer, brings its rich experience to ensure the highest quality standards.
Trust Our expertise and upgrade your level measurement capabilities today. Don’t miss out on this opportunity – explore our product range and contact our experts for tailored solutions that meet your specific requirements.
SI-3151 DLT Differential Pressure Level Transmitter
SI-3151 DLT Differential Pressure Level Transmitter measures the difference in pressure between two points in a system, converting it into an electrical signal for level monitoring.
Product SKU: SI-3151 DLT Differential Pressure Level Transmitter
Product Brand: Sino-Inst
Product Currency: USD
Product Price: 455
Price Valid Until: 2029-09-09
Product In-Stock: PreOrder
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