Intelligent electric float level gauge

The HY-UTD intelligent electric float level gauge is a torque tube instrument produced in cooperation between our factory and FISHER company. The liquid level gauge is assembled from an imported DL-3000 series digital liquid level controller and our factory's 01 series float liquid level sensor. The product not only maintains the excellent performance of the DL-3000 series products, but also greatly reduces the purchasing cost for users, making it an ideal choice for domestic users.

1. Structure

The intelligent float level gauge consists of three parts: float, indicator, and sensor

(1) LCD indicator

(2) Sensors

(3) Floating buoy

2. Working principle

When the float is subjected to the upward buoyancy force F of the liquid, it applies the buoyancy force F to the sensor through the buoyancy rod, and the sensor voltage output is:

Namely: V ∝ F

Because the height of the submerged liquid in the float is proportional to the buoyancy it receives, the change in buoyancy is converted into the corresponding liquid height through the sensor voltage output, and then converted into a standard 4-20mA current output through A/D → CPU → D/A.

The instrument can be used to measure liquid level, boundary position, and density, and can output standard signals of 4-20mA or provide corresponding HART communication protocol outputs. A convenient handheld communicator can configure and debug the instrument at any point of its output. The instrument adopts a large LCD display screen to display process variables and configuration data. Provided convenience for instrument calibration.

Due to its high measurement accuracy, good stability, easy debugging, and simple calibration, the instrument is widely used in industries such as petroleum, chemical, metallurgical, power, and food.

Measurement range: 0.3~6m (special sizes can be ordered)

Accuracy level: 1.0, 0.5 (special type)

Output signal: 4-20mA DC two-wire system, compatible with HART protocol

Power supply: Standard type: 24VDC two-wire system 4-20mA (12VDC-32VDC)

Battery type: 3.6V@19AH Lithium battery, can be used continuously for one year

Nominal pressure: Maximum 16MPa (special specifications can be ordered)

Environmental temperature: -40 ℃~+85 ℃ (LCD will not be damaged) LCD works normally -30 ℃~+80 ℃

Medium temperature: normal temperature -40 ℃~100 ℃ (without heat sink)

High temperature 100 ℃~200 ℃ (with heat sink)

Ultra high temperature range of 200~450 (with heat sink and jacket device)

Medium density: Liquid level p ≥ 0.4g/cm3

Boundary p1-p2 ≥ 0.1g/cm3

Liquid receiving material: The measuring chamber is made of carbon steel or 1Cr18Ni9Ti, and the rest is made of 1Cr18Ni9Ti

External material: cast aluminum

Connection flange: Internal float DN30 PN4.0 flange standard DIN2501

Outer float side flange DN50 PN4.0 main flange DN50 PN4.0 flange standard DIN2501

Special type: selected by the user

Cable interface: Explosion proof type with 1/2NPT internal thread, other M20 * 1.5 internal threads

LCD display: Main screen liquid level display value range: 0-50000 (with decimal point) Pay screen percentage display retains one decimal place

Explosion proof mark: intrinsically safe type ia ∥ CT5 explosion-proof type d ∥ BT6

Protection level: IP65

Load characteristics: Rlmax=50 * (power supply voltage -12)