TK3051C-L Liquid Level Transmitter

Anhui Tiankang TK3051C-L Liquid Level Transmitter Overview

The Anhui Tiankang TK3051C-L liquid level transmitter is used for pressure-based liquid level measurement. It is normally installed on the lower side flange of a tank or vessel. The liquid pressure acting on the diaphragm is converted into a level signal according to the liquid density and measuring range.

Compared with a standard threaded pressure transmitter, the TK3051C-L uses a flanged diaphragm seal structure, which provides a larger process interface and better isolation between the medium and the transmitter sensor. This makes it suitable for many tank level applications where a small threaded pressure port may not be ideal.

This type of transmitter is commonly used for:

• open tank level measurement
• atmospheric vessel level measurement
• storage tank level monitoring
• process vessel level control
• corrosive liquid level measurement
• viscous or slightly dirty liquid applications
• chemical tank and utility tank level measurement

For closed or pressurised vessels where top pressure changes significantly, a dual flange differential pressure level transmitter may be more suitable.

Smart Flanged Level Transmitter Output and Communication

The TK3051C-L smart liquid level transmitter supports standard industrial signal output for automation systems.

For most industrial tank level applications, 4–20 mA with HART communication is the most common option. It allows the transmitter to send a stable analog level signal while supporting remote range setting, diagnostics, and maintenance through a HART communicator or control system.

Key Features of the Anhui Tiankang TK3051C-L Level Transmitter

Flanged Diaphragm Seal Structure

The TK3051C-L uses a flange-mounted diaphragm seal as the process interface. The process liquid acts directly on the diaphragm, and the pressure is transferred to the sensor through the transmitter fill fluid.

This structure is especially useful when the medium is not suitable for a small threaded pressure port, such as:

• corrosive liquid
• viscous liquid
• dirty liquid
• liquid containing slight deposits
• media that require a larger process connection
• tank applications requiring flange installation

Suitable for Liquid Level Measurement

The transmitter measures level based on hydrostatic pressure. As the liquid level rises, the pressure acting on the diaphragm increases. As the liquid level falls, the pressure decreases. The transmitter converts this pressure change into a corresponding output signal.

A simple measurement relationship is:

Liquid Level → Hydrostatic Pressure → Diaphragm Seal → Sensor Signal → 4–20 mA / HART Output

Multiple Flange Size Options

According to the TK3051C-L selection structure, the high-pressure side flange can be selected according to tank nozzle size and project standard.

Typical flange sizes may include:

• DN50 / 2 inch
• DN80 / 3 inch
• DN100 / 4 inch
• other flange sizes depending on model code and project requirements

Flange standard, pressure rating, sealing face, and material should be confirmed according to the tank nozzle and site specification.

Diaphragm Material Options

The TK3051C-L selection table includes different diaphragm material options for process compatibility.

Common diaphragm materials include:

Material selection should be based on medium composition, concentration, operating temperature, pressure, and corrosion behaviour.

Insertion Length Options

The TK3051C-L can be selected with different diaphragm insertion lengths. This is useful when the tank nozzle is long, the flange neck is thick, or the diaphragm needs to be positioned closer to the inside of the vessel.

A suitable insertion length helps:

• reduce dead space in the nozzle
• improve level response
• reduce material accumulation near the diaphragm
• adapt to thick vessel wall or lined tank structures

Filling Fluid Options

The transmitter can be selected with different filling fluids according to process temperature and application requirements.

Typical options include:

• silicone oil for general liquid level measurement
• high-temperature silicone oil for hot liquid applications
• low-temperature filling fluid for cold service
• special filling fluid for oxygen or special process media

The filling fluid must be selected carefully for high temperature, low temperature, oxygen service, vacuum conditions, or special chemical processes.

Optional Flushing Ring

The TK3051C-L selection table includes flushing ring options. A flushing ring is installed between the process flange and transmitter flange, providing flushing or cleaning ports.

It is useful when the medium is:

• viscous
• crystallising
• sticky
• dirty
• corrosive
• easy to deposit around the diaphragm

A flushing ring can make cleaning, drainage, calibration, and maintenance more convenient.

LCD Display and Local Configuration

The transmitter can be supplied with an LCD display for local reading. Depending on configuration, the display may show level-related process value, output current, percentage range, and transmitter parameters.

Installation and Accessory Flexibility

The TK3051C-L can be used with mating flanges, gaskets, flushing rings, mounting brackets, cable glands, and other installation accessories according to site conditions.

Technical Specifications for TK3051C-L Liquid Level Transmitter Selection

Liquid Level Measurement Principle of TK3051C-L

The TK3051C-L flanged level transmitter measures liquid level by detecting the pressure generated by the liquid column.

For an open tank, the liquid level is related to:

• liquid density
• liquid height
• gravity
• transmitter installation position

When the liquid level increases, the pressure on the diaphragm increases. The transmitter converts this pressure into a proportional output signal.

For an open or atmospheric tank:

Level = Pressure ÷ Liquid Density ÷ Gravity

In actual industrial applications, the transmitter is calibrated according to the required level range, liquid density, and installation height.

For closed tanks, if the top gas pressure changes, the level reading may be affected. In this case, a dual flange differential pressure level transmitter should be considered to compensate for vapor space pressure.

Industrial Applications of Anhui Tiankang TK3051C-L Level Transmitter

Chemical Tank Level Measurement

The TK3051C-L can be used for liquid level monitoring in chemical storage tanks, dosing tanks, reactors, intermediate tanks, and process vessels. For corrosive chemicals, diaphragm material and flange material should be selected according to medium compatibility.

Petrochemical and Oil Storage Applications

Suitable for storage tanks, separators, process vessels, oil tanks, and auxiliary liquid systems where stable level measurement is required.

Water Treatment and Utility Tanks

Used for water tanks, treatment tanks, filtration systems, dosing tanks, wastewater systems, and utility liquid storage.

Power Plant Liquid Level Monitoring

Applied in condensate tanks, feedwater tanks, chemical dosing systems, cooling water systems, and other auxiliary vessels in power generation plants.

Viscous or Slightly Dirty Liquids

The flanged diaphragm structure is more suitable than a small threaded pressure port for some viscous or dirty liquids. If the medium is easy to crystallise or accumulate, a flushing ring is recommended.

Corrosive Liquid Level Measurement

With suitable diaphragm and wetted material options, the TK3051C-L can be used for acid, alkali, solvent, and other compatible chemical liquid level applications.

How to Select an Anhui Tiankang TK3051C-L Liquid Level Transmitter

When selecting a TK3051C-L liquid level transmitter, confirm the following details:

1. Tank type
   Confirm whether the tank is open, atmospheric, closed, pressurised, or vacuum.
2. Liquid medium
   Confirm liquid name, density, viscosity, corrosion, crystallisation tendency, and whether deposits or solids are present.
3. Measuring range
   Confirm tank height, normal level, minimum level, maximum level, and required calibrated span.
4. Process pressure and temperature
   Confirm tank pressure, liquid temperature, and whether special filling fluid or high-temperature structure is required.
5. Flange size and standard
   Confirm flange size, pressure rating, sealing face, and standard such as GB, HG, ASME, EN, DIN, or JIS.
6. Diaphragm material
   Select 316L, Hastelloy, tantalum, Monel, gold-plated, PTFE-coated, or other suitable material according to medium compatibility.
7. Insertion length
   Confirm whether a flush diaphragm or inserted diaphragm is required based on vessel nozzle length and installation structure.
8. Filling fluid
   Select suitable filling fluid according to temperature, vacuum, oxygen service, and response requirement.
9. Flushing ring requirement
   For viscous, crystallising, sticky, or dirty media, confirm whether a flushing ring is required for cleaning and maintenance.
10. Output and display
    Confirm whether the transmitter requires 4–20 mA, HART communication, LCD display, or other communication functions.
11. Electrical connection and certification
    Confirm cable entry size, explosion-proof cable gland, hazardous area certification, and required documents.

Accessories for TK3051C-L Flanged Level Transmitter Installation

Common accessories for the Anhui Tiankang TK3051C-L liquid level transmitter include:

• Mating flange
• Flushing ring
• PTFE gasket
• Spiral wound gasket
• Flanged reducer
• Mounting bracket
• Explosion proof cable gland
• Drain or flushing valve
• HART handheld communicator
• Installation bolts and nuts

Typical installation without flushing ring:

Tank Flange → Gasket → TK3051C-L Liquid Level Transmitter

Typical installation with flushing ring:

Tank Flange → Gasket → Flushing Ring → Gasket → TK3051C-L Liquid Level Transmitter

For corrosive, viscous, crystallising, or high-temperature liquids, gasket material, diaphragm material, filling fluid, and flushing structure should be confirmed before ordering.

TK3051C-L Single Flange Level Transmitter vs Dual Flange DP Level Transmitter

For open tanks or vessels with stable reference pressure, the TK3051C-L is often a practical level measurement solution. For closed vessels with changing gas pressure above the liquid, a dual flange DP level transmitter is usually more appropriate.

Anhui Tiankang TK3051C-L Level Transmitter Supplier Support from SIYelectric

SIYelectric supplies Anhui Tiankang TK3051C-L liquid level transmitters for industrial projects, replacement orders, and process instrumentation procurement. We can help check model codes, review datasheets, confirm flange size, select diaphragm material, match flushing rings, and prepare quotations based on actual tank conditions.

For accurate quotation, please provide:

• tank type: open tank, closed tank, atmospheric tank, or pressurised vessel
• liquid medium and density
• measuring range or tank height
• process pressure and temperature
• flange size, pressure rating, and standard
• diaphragm and wetted material requirement
• insertion length requirement
• filling fluid requirement
• output signal and display requirement
• electrical connection and explosion-proof requirement
• whether flushing ring, gasket, or mating flange is required

SIYelectric can also support related accessories such as flushing rings, mating flanges, PTFE gaskets, spiral wound gaskets, flanged reducers, mounting brackets, explosion-proof cable glands, valves, and HART communicators.

Available documents may include technical datasheet, certificate of conformity, inspection report, packing list, and commercial invoice, depending on order and project requirements.