LLT Spiral Rotor PD Flow Meter with pulse transmitter

LLT Spiral Rotor PD Flow Meter electronic indicator side display

LLT Spiral Rotor PD Flow Meter Electronic Indicator

LLT Spiral Rotor PD Flow Meter Double Body

LLT Spiral Rotor PD Flow Meter cast iron material

LLT Spiral Rotor PD Flow Meter Mechanical Indicator

LLT Series Helical-Spiral Rotor Flow Meter

The LLT Series Helical-Spiral Rotor Flow Meter has a pair of specially toothed helical rotors. Used for continuous high-precision measurement of liquid flow in pipelines.

●The spiral rotor rotates at a constant speed in the metering chamber, with equal flow and constant speed;
●Smooth operation and extremely low noise;
●Large flow rate and small pressure loss;
●The spiral rotor rotates at constant speed and the fluid pulsation is small, and the sending pulse is stable and accurate;
●Can be configured with a variety of counters, speed regulators and external fine regulators;
●Can be installed vertically (please indicate the requirement for vertical installation when ordering, and the diameter is generally below DN200).
●Under high temperature conditions, adding a high temperature radiator can measure temperatures up to 250°C.

Get A Free Quote

LLT Series Helical-Spiral Rotor Flow Meter Description

LLT series spiral rotor flowmeter is a high-precision meter used for continuous measurement of liquid flow in pipelines. It is the latest generation of positive displacement flow meter.

It has many advantages such as no pulsation, extremely low noise, high precision, high reliability, large measuring range, small pressure loss, strong viscosity adaptability, ability to measure high temperature and high viscosity liquids, and easy installation.

LLT series spiral rotor flowmeter is equipped with on-site pointer display and word wheel cumulative counting device. Directly displays the liquid cumulative flow rate. It can also be connected to electronic instruments or computers through a transmitter for remote display. Suitable for commercial trade measurement and engineering management control.

LLT Series Spiral Rotor Flow Meter Technical Parameters

Flow range m³/h (accuracy class 0.5)

Model	Diameter	Viscosity mPa.s
		0.3~0.8	0.8~2	2~15	15~400	400~1000	1000~2000	2000~3500
		Gasoline	Kerosene	Diesel, engine oil	Heavy oil	High viscosity liquid
LLT-0252	25	3~9	1.5~10	1~10	1~10	1~8	1~8	1~6
LLT-0401	40	3~9	1.5~10	1~10	1~10	1~8	1~8	1~6
LLT-0402	40	7~20	3~22	2.5~25	2.5~25	2~18	2~18	3~12
LLT-0501	50	7~20	3~22	2.5~25	2.5~25	2~18	2~18	3~12
LLT-0502	50	9~36	4.5~36	3.6~36	3.6~36	2.8~25	2.8~25	4.5~18
LLT-0801	80	9~36	4.5~36	3.6~36	3.6~36	2.8~25	2.8~25	4.5~18
LLT-0802	80	20~80	10~80	10~100	10~100	6.5~56	6.5~56	5~40
LLT-1001	100	20~80	10~80	10~100	10~100	6.5~56	6.5~56	5~40
LLT-1002	100	25~100	18~100	15~150	15~150	8.5~80	8.5~80	6.5~55
LLT-1501	150	25~100	18~100	15~150	15~150	8.5~80	8.5~80	6.5~55
LLT-1502	150	55~225	30~250	25~250	25~250	18~150	18~150	10~100
LLT-2001	200	55~225	30~250	25~250	25~250	18~150	18~150	10~100
LLT-2002	200	90~360	50~400	40~400	40~400	28~240	28~240	20~160
LLT-2501	250	90~360	50~400	40~400	40~400	28~240	28~240	20~160
LLT-2502	250	130~540	65~540	60~600	60~600	42~360	42~360	30~240
LLT-3001	300	130~540	65~540	60~600	60~600	42~360	42~360	30~240
LLT-3002	300	220~800	110~900	95~950	95~950	70~600	70~600	54~450
LLT-3501	350	220~800	110~900	95~950	95~950	70~600	70~600	54~450

Flow range m³/h (accuracy class 0.2)

Model	Diameter	Viscosity mPa.s
		0.3~0.8	0.8~2	2~15	15~400	400~1000	1000~2000	2000~3500
		Gasoline	Kerosene	Diesel, engine oil	Heavy oil	High viscosity liquid
LLT-0252	25	3.5~8	3~10	2~10	2~10	2~8	2~8	2~6
LLT-0401	40	3.5~8	3~10	2~10	2~10	2~8	2~8	2~6
LLT-0402	40	8~20	5.5~22	4.5~22	4.5~22	4~18	4~18	3~12
LLT-0501	50	8~20	5.5~22	4.5~22	4.5~22	4~18	4~18	3~12
LLT-0502	50	15~36	9~36	7~36	7~36	6~25	6~25	4.5~18
LLT-0801	80	15~36	9~36	7~36	7~36	6~25	6~25	4.5~18
LLT-0802	80	30~80	20~80	15~80	15~80	14~56	14~56	10~40
LLT-1001	100	30~80	20~80	15~80	15~80	14~56	14~56	10~40
LLT-1002	100	40~100	25~100	20~120	20~120	18~72	18~72	14~55
LLT-1501	150	40~100	25~100	20~120	20~120	18~72	18~72	14~55
LLT-1502	150	88~220	57~225	44~220	44~220	38~150	38~150	25~100
LLT-2001	200	88~220	57~225	44~220	44~220	38~150	38~150	25~100
LLT-2002	200	150~360	90~360	72~360	72~360	50~210	50~210	40~160
LLT-2501	250	150~360	90~360	72~360	72~360	50~210	50~210	40~160
LLT-2502	250	180~540	135~540	100~540	100~540	90~360	90~360	60~240
LLT-3001	300	180~540	135~540	100~540	100~540	90~360	90~360	60~240
LLT-3002	300	250~800	220~900	180~900	180~900	150~600	150~600	110~450
LLT-3501	350	250~800	220~900	180~900	180~900	150~600	150~600	110~450
Remarks: Class 0.3 and Class 0.1 flowmeters can be provided upon special request.

Get Accurate High-Viscosity Fluid Measurement Solution

Sino-Inst produces and supplies various models of spiral double rotor flowmeters, which can realize various functions of on-site display or remote transmission. It can output electrical pulse signals or output flow analog 4~20mA signals.

Products Categories

Coriolis Mass Flow Meter

Thermal Gas Mass Flow Meter

Differential Pressure Flow Meter

Electromagnetic Flowmeter

Ultrasonic Flow Meter

Vortex Flowmeter

Turbine Flowmeter

Positive Displacement Flow Meters

Compact Pressure Sensor/Transmitter

High Temperature Pressure Transmitter

Cryogenic Pressure Transducer

High Temperature Melt Pressure Transmitter

Explosion-Proof Pressure Transmitter

Differential Pressure Transmitter

Hydrostatic Level Transmitter

Ultrasonic Level Transmitter

Radar Level Meter

Paperless Recorder

Get A Free Quote

Application of LLT Series Spiral Rotor Flowmeter

The intelligent double rotor flowmeter is a precision instrument used for measuring and controlling liquid flow in pipelines.
It has high measurement accuracy, stable operation, no pulsation, low noise, long service life and strong adaptability to viscosity changes. It is widely used in petroleum, chemical industry, metallurgy, electric power, shipbuilding, transportation, docks, mining, thermal power, food and other departments. It is especially suitable for commercial transaction measurement and engineering automation measurement management control of crude oil, high condensation oil, high water content crude oil, petroleum products, food and chemical solutions.

1. Oil trade measurement

At present, mass flow meters are usually used as the main measurement method in oil trade. However, due to the particularity and sensitivity of oil trade measurement, two measurement methods are usually used for supervision and comparison, and the volumetric method is often used for this purpose.

As the most advanced positive displacement flow meter, the spiral rotor flow meter has begun to be recognized by the market and has become the main force of positive displacement flow meters. It has high precision and is suitable for measuring a variety of liquids. In the terminal oil product factory project, the LLT series spiral rotor flowmeter is also widely used. Especially the series use of mass flowmeter and spiral rotor flowmeter plays a very important role.
Good comparison effect.

2. Heavy oil flow measurement

The double-rotor flowmeter is a generation of volumetric flowmeter manufactured by our company, which uses a pair of special tooth-shaped spiral rotors. It has strong viscosity adaptability and can measure high temperature and high viscosity liquids. Therefore, the LLT series spiral rotor flowmeter is a common choice for flow measurement of industrial liquids such as heavy oil.

More Detail

Helical-Spiral Rotor PD Flow Meter Working Principle

The LLT spiral rotor flowmeter consists of a flow transmitter and a counter. The main part of the transmitter is composed of a measuring chamber equipped with a pair of special toothed spiral rotors and a sealed coupling.

The counting mechanism includes a deceleration mechanism and an accuracy adjustment mechanism. The counter is a word wheel accumulation and an electric pulse transmitter, etc.

There is mainly a sealed cavity composed of a pair of special rotors and cover plates in the measurement chamber as the measurement unit of flow.

The rotor is driven by the pressure difference at the inlet and outlet of the flow meter to rotate. This continuously measures the liquid at the inlet and then sends it to the outlet through the sealed cavity.

The amount of liquid flowing through each revolution is eight times the seal chamber in the figure.

The total number of rotor rotations caused by the sealed coupling. And the speed of rotation is transmitted to the counting mechanism. There will be a pointer display and word wheel accumulation, and you can know the total amount of liquid passing through the pipe.

A pulse transmitter can also be installed in the counting mechanism to form a flow meter with transmitter. It can realize automatic measurement and control of remote transmission (quantification, accumulation, instantaneous and other functions).