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

SHENZHEN LONNMETER GROUP is a global intelligent instrument industry technology company. The group is headquartered in Shenzhen, China's science and technology innovation center. After more than ten years of steady development, it has formed a collection of research and development, production, sales and service. A group company of measurement, intelligent control, environmental monitoring and other series of project products.

Service Philosophy：
Every little thing for customers is a big thing for LONNMETER!
Business Philosophy：
Help customers succeed!
Group Values：
Customer first, pursuit of perfection, embrace change, dedicated cooperation, hard work, happy life.
Group Mission：
Make measurement intelligence more accurate!
Group Vision：
In the next 3-10 years, LONNMETER will create a new generation of smart instruments leader in China! In the next 10-20 years, let more people in the world use LONNMETER products and become the new generation leader of global smart instruments!

LONNMETER GROUP has seven professional production bases, more than 71 professional and technical personnel, and more than 440 skilled workers. The product quality is high, and the company has won many awards. At present, the company has obtained 37 national research and development patents, and its products have passed 19 international certifications such as CE, FCC, FDA, and TUV. The technical team of SHENZHEN LONNMETER GROUP is the core strength of the company. With its strong technical strength, it has conducted in-depth research and development on new products and new technologies in the intelligent instrument industry. The team worked hard to keep up with industry trends and made major breakthroughs in new product development.