Structural Principles

The LC3010 series is composed of the original DLC3000 Smart Level Controller, a float measuring chamber, measuring mechanism, float, torsion tube, and more. The float is submerged in the liquid within the measuring chamber and rigidly connected to the torsion tube system. The force the torsion tube system withstands is the net weight of the float minus the buoyant force exerted by the liquid. This resultant force twists the torsion tube to a certain angle. Changes in the position, density, or interface levels of the measured liquid cause the float to move, which is then transmitted to the torsion tube assembly, causing it to rotate. The rotational movement of the torsion tube is transferred to the lever of the smart level controller, causing a magnet fixed on the lever assembly to displace, altering the magnetic field detected by the Hall effect sensor and converting it into an electrical signal. The transmitter employs a microcontroller and related electronic circuits to measure process variables, providing a 4-20mA current signal output in a two-wire system, and drives an LCD liquid crystal display while offering HART communication capability. The microcontroller within the transmitter not only has environmental temperature compensation and linearization processing functions but also compensates for changes in liquid density caused by process temperature variations.

Features

Process Temperature: -196°C to +400°C

Pressure Class: PN 1.6, 4.0, 6.3, 10, 16, 25, 32 MPa

Indicator: 5-digit configurable to %mA or other physical units

Signal noise is suppressed using Smart filtering.

Linearization or user-defined characteristic processing can be applied to the measured signal.

Use the machine's buttons for routine operations.

Utilize HART or FOXCOM communication protocols for communication

Supports Fieldbus FF communication protocol

Simulated output signals for loop testing

Continuous self-diagnosis

Configurable safety setpoints

Materials for various corrosive media are available for selection.

Casing protection IP66 (as per DIN 40050)

The product is explosion-proof and intrinsically safe, suitable for use in explosive areas.

Sensor and amplifier can be installed either as a single unit or as separate components.

Key Technical Parameters

Measuring Range: 300～3,000mm (larger ranges available upon request)
Accuracy: Level measurement ±0.5% FS, Interface measurement ±1% FS
Repeatability: ≤±0.25% FS
Deadband: ≤±0.2% FS
Power Supply: 12-30VDC
Output Signal: Analog: 4～20mA DC
Digital Quantity: According to HART or FOXCOM communication protocol, FF fieldbus communication protocol
LCD Display: Analog mA or Level, Interface, and Percentage Range
Load Resistance: 700Ω (when powered by 24VDC)
Density Range: 100 < ρ < 2000 kg/m³
Density Difference: 0.05 g/cm³
Working Pressure: 2.5～32.0 MPa
Medium Temperature: -196°C to +400°C
Ambient Temperature: -40°C to +70°C
Impact of working conditions:
Power Supply Impact: Output variation ≤ ±0.2% FS when voltage varies between the minimum and maximum specified values.
Temperature Impact: ≤0.1% / 10℃
Alarm Current: The transmitter outputs an alarm current when the liquid level is 10% below the lower limit of the transmitter's range or 10% above the upper limit of the transmitter's range, set at either 3.8mA or 22.8mA.
Protection Level: IP65 (NEMA 4X)
Intrinsically Safe Class: Type "ia" Exia II CT1~T4

Explosion-proof: ExdIICT1~T6
Electrical Interface: 2 x 1/2-14 NPT female threads
Cable Diameter: 6-12mm
Process Connection：

Saddle float type: Equipped with DIN or ANSI flange standards, flange size DN80 or 3" and above; for smaller flange sizes, please consult at the time of order.

Buoyant Floating Saddle: HG20592~20635-97; Flanges with DN20 and above, other flange standards (such as GB, JB/T, HGJ, ANSI, DIN, etc.) should be specified at the time of order.

Hot jacket: DN15 PN1.0 RF, other specifications to be specified upon order
Amplifier Detachable Installation Mounting Accessories: Installation Components
Cable Length: 3m / 10m / User-Specified Length
Material: Buoy: 304; 316
Clamping body: Carbon steel; 304; 316; Haste C alloy
Clamping Body Heat Sheath: 304
External Buoyancy Cylinder: Carbon Steel; 304; 316
Torsion Tube: 316L; InconelNel 600, 3J1, 3J53, Haste C alloy

Connector box: Aluminum alloy

Design Selection: