Inline Oil Viscometer

Short Description:

for Inline Viscosity Measurement

Integrate the inline viscometer for oils like lube oil, fuel oil, vegetable oil, crude oil, diesel oil, drilling fluids, metalworking fluids to monitoring real-time viscosity of oils in pipelines, tanks or process vessels directly, eliminating manual sampling delays, reducing errors, and enabling proactive process control or maintenance. The robust explosion-proof and waterproof design prevent sensor fouling caused by buildup of deposits, sludge or contaminants on the sensor surface while keep long-term stable performance.

Parameters

Viscosity Range: 1 - 1,000,000 cP

Accuracy: ±2% ~ 5%

Repeatability: ±1% ~ 2%

Temperature Accuracy: 1.0%

Sensor Pressure Range: < 6.4 MPa

Waterproof: IP65

Power Supply: 24 VDC

Power: 24W

Communication Interface: RS485

Output: Viscosity 4 - 20 mADC

Material: 316 L, Teflon, Hastelloy

Connections: Flange & Thread

Flange Standard: HG20592

Explosion-proof Standard: Ex dIIBT6

Temperature Resistance Range: < 350℃

Signal Response Time: 5s

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Product Detail

Product Tags

The inline oil viscometer for oil or inline oil viscosity meter features a rod-shaped sensing element, which vibrates at a fixed frequency and twists torsionally along its central axis. As the element shears through the fluid over its surface, it loses energy due to viscous drag forces. These forces change based on the fluid’s viscosity: the higher the viscosity, the greater the drag, and the more energy the element dissipates. This energy loss is detected by the viscometer’s electronic components. The transmitter then processes this signal to output a clear, readable viscosity value, delivering direct insights into fluid conditions during production.

Working Principle

The inline viscometer oil employs an acoustic signal source to excite a metal tuning fork, causing the fork to vibrate at its natural resonant frequency. Notably, this resonant frequency exhibits a direct correlation with the viscosity of the liquid that the tuning fork contacts. Subsequently, the viscosity the liquid can be determined through frequency analysis—with temperature compensation implemented to counteract temperature drift within the system, ensuring measurement accuracy.

Optional Material of Wetted Parts

316 L, Teflon, Hastelloy

Repeatability

±1%

Wide Viscosity Range

1 - 1,000,000 cP

Product Features

• Real-time continuous viscosity measurement;

• Wide viscosity range 0- 1,000,000 cP and temperature range -30°C ~ 120°C;

• Built-in Modbus RTU/RS-485, 4-20 mA analog output;

• LCD display with intuitive menu for on-site configuration;

• High accuracy ±3% and repeatability ±1%;

• No-moving-parts design minimizes clogging, abrasion and maintenance;

• Low power consumption (<5W) with 24V DC supply;

• Threaded and flanged connections enable easy integration into pipeline, mixing tank or applicator feed line;

Benefits of Oil Field Viscometer

• Prevent over-thinning and over-addition of raw materials;

• Continuous monitoring make predictive maintenance possible;

• Eliminate batch rejections or customer dissatisfaction;

• Extend equipment failure and downtime caused by pump cavitation and hydraulic system failures;

• Lower possibilities of disruption in distillation or blending.

OEM & ODM Service

• Viscosity range customization;

• Material Customization of wetted parts;

• Probe length customization

Contact our engineers right now if you need exclusive OEM and ODM service.

Parameter Selection Table

LONN-ND	Specification Code						Inline Viscosity Meter
Probe Length (Optional)	L						Standard 220 mm
	H						Extended 250-500 mm
	F						Ultra-Extended for Reactor 550-1000 mm
Material		S					316
		S1					Teflon
		S2					Hastelloy
Temperature			P				0-120℃
Temperature			G				130-350℃
Viscosity Measurement Range (Optional)				A			1-50cp
				B			1-100cp
				C			10-1000 cp
				D			10-10000 cp
				E			100-100000cp
				F			1000-1000000cp
Output Signal					B		4～20mADC + RS485
Connection Method						F	Flange Connection
						L	Threaded Connection
						N	No Connection
Explosion-Proof Rating							D	EXd II BT6
Explosion-Proof Rating								/B Protective Cover
LONN-ND	L	S	P	A	B	F	D	/B

About Lonnmeter

Lonnmeter Group
Lonnmeter is an professional technology company specialized in intelligent inline instruments over 15 years, having grown into a leading manufacturer of precise inline measuring instruments.
Core Positioning & Product Series
Lonnmeter focuses on the monitoring of key parameters in industrial processes and supply inline instruments likedensitometers, flowmeters, level meters (or level transmitters), viscometers and pressure transmitters to optimize industrial operation. These products enable real-time and accurate measurement of parameters such as flow rate, density, concentration, viscosity and pressure, and are widely suitable for the production process needs of multiple industries including food, chemical, cosmetics, energy, petrochemical, mining and metallury.

Vision of Lonnmeter
In 3-5 years, Lonnmeter aspires to become the leader of China's new-generation wireless intelligent instruments!
In 5-10 years, Lonnmeter aspires to become China's leader in intelligent instruments and replace imported instruments with its own products!
In 10-20 years, Lonnmeter aims to make its products available to more people around the world and become a global leader in new-generation intelligent instruments!
Become the global leader of new-generation intelligent instruments.

15 + Years of Experience

Over 15 years of experience in inline instruments manufacturing.

6600 ㎡ Production Area

Over 6000 ㎡ factory and warehouse

400 + Staff

Over 400 experienced staff work for Lonnmeter like R&D, sales, marketing team, etc.

1000 -1500 Units / Month

Monthly production of inline instruments is over 1000 per month. All products undergo strict quality inspection.

Lonnmeter -- Manufacturer of Inline Instruments for Process Control
Lonnmeter (hereinafter referred to as "the Group") has grown into a competitive manufacturer of inline instruments over the past 15 years. All inline instruments undergone strict quality inspection and calibration before shipment to customers.
With joint efforts of R&D department and sales team, all inline instruments for process control escalade continuously and stand up to special and complex industrial conditions, solving numerous tricky problems and improving process efficiency while reducing costs.

Company Advantages
As a leading intelligent industrial instrument manufacturer, Lonnmeter delivers targeted, value-driven solutions for industrial process control with the following core strengths:

Complimentary Operating Condition Analysis
Our engineer team provides free professional analysis of medium properties, pressure/temperature ranges, bubble content and the like, offering data-backed recommendations to optimize parameter settings and avoid equipment selection risks.

Customized Process Control Solutions
Our portfolio is offered based on provided operating conditions and avoid all negative factors caused inaccurate measurements like flow rate, particle size and bubble content of measured media. Keep all inline instruments working in optimal status.

Flexible OEM&ODM Services We provide tailored OEM and ODM services dedicated to inline industrial instruments. Our OEM services cover customizable packaging, operation manuals and brand logos, while ODM solutions support flexible customization of core materials, measurement parameters, product structures and functional configurations, fully meeting all your special application needs.