UHS-3010 series electric float level transmitter (boundary position)Detailed product description：

Overview
The UHS-3010 series electric float liquid level (boundary) transmitter is a liquid level gauge produced by our company using the original intelligent liquid level transmitter from FISHER in the United States to measure the liquid level and boundary of the medium. The instrument ensures reliable liquid level (boundary) measurement with extremely high accuracy and stability, outputs 4-20mA standard DC signals, and uses a HART communicator compatible with the 3010 series intelligent liquid level controller. You can query, configure, calibrate, or test the intelligent liquid level controller, as well as accept information from a single control loop and download information from the field to the control system.

working principle
The UHS-3010 transmitter consists of four parts: a floating chamber, a floating chamber, and a twisted tube system for sensing and transmitting (FISHER).

When the liquid level inside the float chamber changes, it causes a change in buoyancy suspended by the torsion tube system immersed in the liquid (this force is the difference between the float's own weight and the buoyancy felt by the float). Under the action of this force, the twisted tube twists a certain angle. As the liquid level varies, this force also changes, and the angle of the twisted tube also varies, thus making the liquid level proportional to the twisting angle. The UHS-3010 transmitter is rigidly connected to the torsion tube through a corrugated tube. When the torsion tube rotates, the corrugated tube angle is transmitted to a lever assembly supported by a spring plate, causing a pair of magnets fixed on the lever assembly to swing. The oscillation signal is sensed by Hall elements installed in a pair of magnets. Converted into a Hall potential signal (V=KBI), processed by an amplification circuit, and converted into a 4-20mADC output. The transmitter is equipped with zero and range adjustment devices on the outside, and zero and range adjustment are not interrelated. In addition, with the dry calibration device, the whole machine calibration is very convenient.
Dry calibration: Calibrate the transmitter by zeroing and adjusting the range before the liquid enters the float chamber.

Instrument structure
The UHS-3010 series products consist of a 3010 intelligent level transmitter and a 00 series float level sensor. The UHS-3010 series intelligent liquid level transmitter is a 24V DC powered instrument. The 00 series float level sensor consists of a float assembly and a torsion tube assembly. The float suspended in the liquid senses changes in buoyancy, which changes the torque on the torsion tube and causes a deviation in the angle of the torsion tube. The 3010 liquid level transmitter receives torque tube angle deflection and converts it into a 4-20mA current output with HART communication function. The liquid crystal display (LCD) of the instrument can display analog output, process measurement (liquid level, boundary height or density), process temperature (if PTD is installed), torque tube rotation angle and percentage.

LCD display
This instrument uses a microcontroller and related electronic circuits to measure process variables, provide current output, drive an LCD display, and provide HART communication capability. (Figure 4) is a block diagram of the main components in the instrument electronic circuit. It consists of four main parts, namely LCD display, processor module, sensor circuit board, and terminal board. The processor module includes a microprocessor, analog-to-digital (A/D) converter, loop interface, signal adjustment, digital to analog (D/A) output, power supply, and interface with its main circuit board.
The sensor circuit board includes Hall sensors, temperature sensitive components for monitoring Hall sensors, and EPROMs for storing correlation coefficients with Hall sensors. The terminal board includes electromagnetic interference filters, circuit wiring terminals, and wiring for optional RTDs used to measure process temperature.
The changes in the liquid level, density, or interface height of the tested liquid cause variations in the buoyancy felt by the float, which are transmitted to the torsion tube component. When the measured liquid level changes, for the sensor, its torque tube rotates 4.4 degrees, which causes the output of the digital liquid level controller to vary between 4 and 20mA.
The rotational motion of the torque tube is transmitted to the swinging component of the digital liquid level controller, and the magnetic steel on the swinging component swings accordingly, changing the magnetic field detected by the Hall effect sensor. The transmitter converts the magnetic field signal into an electronic signal.
The controller receives electronic signals that have been compensated for environmental temperature and linearized. The microcontroller also actively compensates for changes in liquid density caused by temperature fluctuations during the process. This compensation is based on an input via the HART protocol or, if an RTD is connected, on the input of this optional RTD. The digital to analog (D/A) output circuit receives the output of the microcontroller and provides a 4-20mA current output signal.
During normal operation, when the input is between the upper and lower range values, the output signal range of the digital liquid level controller is between 4 and 20mA, and is proportional to the input. If the input exceeds the low and upper range values, its output will continue to be proportional to the input until 3.8 or 20.5mA. At this point, the output is considered saturated and will remain at this value until the input returns to the normal operating range. However, once an alarm occurs, the output is changed to 3.7 or 22.5mA, depending on the position of the alarm jumper.
The digital liquid level controller also provides reverse polarity protection, instantaneous surge voltage protection, and electromagnetic interference (EMI) protection.

Characteristics
Intelligentization - This instrument utilizes the HART communication protocol to easily access process operation critical information. Using the 275 HART communicator, you can query, configure, calibrate, or test the instrument. Using the HART protocol, information from the field can be downloaded to the control system or received as information for a single loop. The protocol also allows access to digital diagnostic, maintenance, and other process data.
The digital communication of this instrument is superimposed on the same two-wire circuit of the 4-20mA process control signal without disrupting the process signal, thus achieving true simultaneous communication without interrupting the signal.
Durable and corrosion-resistant structure - The sturdy casing, anti-corrosion coating on the circuit board, and corrosion-resistant float material enable the instrument to withstand harsh environments and process technologies.
High sensitivity - The UHS-3010 series transmitter uses Hall elements as sensors, which can detect small angle signals, making the instrument suitable for applications with small specific gravity, interfaces, and other input changes.
Precision and good repeatability - the sealed Hall element provides interference free signals, and the built-in filter of the transmitter can reduce the fluctuation of the output signal caused by liquid level fluctuations.
Strong applicability - can be applied to different liquids, a wide temperature range, and various harsh environments.
Moisture resistant design - a separate junction box to prevent moisture from entering electronic components from the wiring area.

Display of LCD Display - LCD displays analog output signals on a bar chart with a percentage scale. The monitor can also be configured to display process variables, process temperature, percentage range, and torque tube rotation angle.
Electromagnetic interference filter - a filter is used between the electronic component box and the junction box to improve the transmitter's resistance to electromagnetic interference.

Main technical parameters
Measurement range: 350-4000mm (according to user requirements)
Accuracy: ± 1.0% F.S (analog output)
Linearity: ± 0.75% F.S
Output signal: 4-20mA (positive and negative) with HART communication
Power supply voltage: 24V DC
Load resistance: 700 Ω
On site instruction: 0-100% (dynamic coil type) ± 2.5% F.S
Environmental temperature: -40 to+85 ℃
Adjustment range: range 10-100% float length; Zero point 100% float length;
Work pressure: PN4.0~16.0Mpa
Medium specific gravity: 0.4-1.0g/cm3 (special ordering can be made outside this range)
Minimum specific gravity difference for interface measurement: 0.1 (standard float);
Medium temperature: -40~+150 ℃ Normal temperature type 150~+400 ℃ Normal temperature type -196~+40 ℃ Low temperature type
Connection flange: external float standard DN40 PN4.0JB/T82.2-94 standard; Special DN40 PN according to the selected level, other connections can be customized according to user requirements;
Internal float DN50 PN4.0Mpa, JB/T82.2-94 standard; Other pressures according to the selected level
Structural material: 3010 transmitter housing and cover: aluminum Internal: steel plate, aluminum, stainless steel, circuit board
00 liquid level sensor torsion tube: 3J53: high temperature torsion tube: high temperature corrosion-resistant alloy, float and lever: stainless steel structure 1Cr18Ni9Ti, float chamber: carbon steel, stainless steel High temperature float chamber: stainless steel;

Overall dimensions

Model Name	Work pressure Mpa	H	Z	The connection parameters of the flange (B) sealing mating surface meet the requirements
3010□- A、B、C、D Intelligent liquid level transmitter	six point three	five hundred	six hundred and seventy-four	One machine department standard JB/T82.2-94 Pg6.3-Dg40
		eight hundred	nine hundred and seventy-four
		one thousand and two hundred	one thousand three hundred and seventy-four
		one thousand and six hundred	one thousand seven hundred and seventy-four
		two thousand	two thousand one hundred and seventy-four
3010□- A、B、C、D Intelligent liquid level transmitter	sixteen	five hundred	six hundred and ninety	One machine department standard JB/T82.2-94 Pg16-Dg40
		eight hundred	nine hundred and ninety
		one thousand and two hundred	one thousand three hundred and ninety
		one thousand and six hundred	one thousand seven hundred and ninety
		two thousand	two thousand one hundred and ninety

Model Name	Work pressure Mpa	Measurement range H	Z	G	L	The connection parameters of the flange (B) sealing mating surface meet the requirements
3010□-E intelligent type Level transmitter	six point three	five hundred	two hundred and twenty-four	eight hundred and sixty	one thousand	One machine department standard JB/T82.2-94 PN6.3 DN40
		eight hundred
		one thousand and two hundred
		one thousand and six hundred
		two thousand

Model Name	Work pressure Mpa	Measurement range H	L	E flange	F flange non-standard
3010□-F intelligent type Level transmitter	four	five hundred	one thousand	Non standard flange Our factory produces For reference image	User customized manufacturing size reference diagram
		eight hundred
		one thousand and two hundred
		one thousand and six hundred
		two thousand

Ordering Instructions
1. Model and name
2. Measurement range H (mm)
3. Working pressure of the tested medium
4. Specific gravity of the tested medium
5. Temperature of the measured medium