Get in Touch

If you need any help, please feel free to contact us

If you have any further questions, please call +86-021-37566990 or fill out the inquiry form.

Get coupons

Tuning Fork Resonance Density Meter (Concentration Meter) - LF100C

PREV: LFP Series RF Capacitance Level Transmitter
NEXT: Center Outlet Specialized Level Switch - LF22

Product introduction

Insertion-type Design
The insertion-type density (concentration) meter is installed by direct insertion, making it widely applicable for media density measurement in pipelines, open tanks, and closed containers. The fluid density is directly determined by the vibration frequency of the tuning fork immersed in the medium. A built-in temperature sensor provides temperature compensation.

Application Scope
The insertion-type density (concentration) meter performs real-time online density measurements. It is suitable for process control where density is the key parameter or for quality control based on solid content percentage or concentration percentage. Typical industries include:

Petrochemical
Brewing
Food processing
Pharmaceuticals
Mineral processing (e.g., clay, carbonate, silicate, etc.)

Specific applications include:
Interface detection in multi-product pipelines
Density measurement of stirred mixtures
Endpoint monitoring in reaction vessels
Interface detection in separators
The sensor operates based on a vibrating element principle. The sensing part is the immersed tuning fork. Vibration is excited by a piezoelectric device fixed at one end of the fork, while vibration frequency is detected by a secondary piezoelectric device at the other end. The circuit at the top amplifies the signal.

The vibration frequency varies with the density of the liquid. Thus, the liquid density can be accurately calculated using the following formula:
D= K0+K1T+K2T2

Where:
D = Uncalibrated density of the measured medium (kg/m³)
T = Vibration period (μs)
K0, K1, K2 = Calibration constants

Technical Specifications Wiring Diagram Wiring Diagram Installation Diagram Model Selection Table

Measurement Range	0 –2.5 g /cc (0 –2500 kg/m3) ，0~ 100.0%
Calibration Range	0 –2.5 g /cc (0 –2500 kg/m3) ，0~ 100.0%
Measurement Accuracy	± 0.001g /cc ( ± 1kg/m3) ， ±0.5%
Repeatability	± 0.001 g /cc ( ± 0. 1kg/m3) ±0. 1%
Operating Temperature Range	-50℃ ~ + 150℃
Maximum Working Pressure	4mpa
Fluid Viscosity Range	0 –2000 cP
Temperature Coefficient	Less than 0.1 kg/m³/°C (±0.5% after calibration)
Pressure Influence	Negligible
Built-in Temperature Sensor	Digital sensor with temperature compensation
Wetted Materials	316L, 2205, 2507 stainless steel, Hastelloy C, Titanium, PTFE/PFA
Fork Coating	Standard: PTFE or PFA
Power Supply	24VDC， ≥50 mA
Analog Output	4 -20 mA ，0-1000Hz， RS485 Modbus RTU HART
Output Accuracy (at 20°C)	±0.1% of reading or ±0.05% of full scale
Output Repeatability (–40°C to +85°C)	± 0.05% FS
Process Connections	DIN 50 PN16 G1.5" thread, 3" tri-clamp, IDF, and RJT sanitary types
	IDF, and RJT sanitary types
Ingress Protection	IP65
Housing Material	Aluminum alloy

LF100C-	A	M	L	A	1	D	A	A	A	M	Details
LF100C-											LF100C Series Tuning Fork Resonant Density Meter (Concentration Meter)
	A										Standard Type
	B										Explosion-proof Type (Explosion protection level: Exd ia IIC T5 Ga; Protection grade: IP65)
		M									M20X1.5
		G									G1/2
		N									NPT1/2
		C									Others (please specify)
			L								Process Connection Type
			F								Threaded （ 01 ）DN50 (02)DN80 (03)DN100 (04) Others
			W								Sanitary 1= 1.5"Clamp；2=2"Clamp； 3=3"Clamp；4=Others
			C								Others: Please specify
				A							01 = 128 mm (Standard) 02 = 150 mm
				B							Rod Extension: 70 mm ~ 3000 mm (Optional)
				C							Cable Extension: 1 ~ 8000 mm (Remote version optional)
					1						316 Stainless Steel
					2						Corrosion-resistant Coating: 316SS + PTFE
					3						Corrosion-resistant Coating: 316SS + PFA
					C						1 = 2205 Duplex Stainless Steel 2 = Hastelloy 3 = Titanium 4 = Zirconium 5 = Others
						D					24V DC± 10%
							A				1-channel 4–20 mA 1 = Two-wire 2 = Four-wire
							B				2-channel 4–20 mA (Four-wire only)
							C				RS-485（ modbus ）
								A			Normal temperature: 0–100°C
								B			High temperature: 0–150°C (Optional high-temperature heat sink)
									A		Normal pressure: 0.2–0.3 MPa
									B		Max pressure: ≤4 MPa
										M	0—2.5g/cm³
										Y	0-100%
										Z	( ) Other user requirements: Please specify
Note: The selection table is for parameter selection only. Final configuration is based on parameters and corresponding codes for production.

Shanghai Kayuan Electronic
Technology Co., Ltd.

Shanghai Kayuan Electronic Technology Co.,Ltd is an enterprise specializing in the production and R & D of industrial sensors and controllers. Its main products include switches and sensors for flow, pressure, temperature, and liquid level.

In 2008, our assembly plant was established in Shanghai China,PAKU INTELLIGENT EQUIPMENT(SHANGHAI)CO.,LTD a subsidiary of Kayuan to produce the PAKU series of products. We adopt advanced technology and manufacturing processes across the board. With our professional design and production technology, comprehensive product lines, excellent quality, and sales network services, we can not only provide users with timely and professional technical support but also offer high - quality one - stop services.

The company has set up various departments such as the purchasing department, R & D department, quality management department, finance department, sales department, after - sales department, general office, laboratory, archive room, calibration workshop, production workshop, inspection area, storage area, shipping area, and tea break rooms, aiming to provide products of excellent quality and sincere services.

We adhere to the customer - centric concept of creating value for customers. According to the industry needs of customers, we continuously update technology and optimize services, aiming to become a leader in the field of process automation.

PAKU products are now widely used in different industries, including automation complete sets of equipment, petroleum equipment, chemical equipment, power equipment, welding equipment, steel equipment, metallurgical equipment, automobiles, and water treatment. We have served many customers at home and abroad, and our products are sold to countries such as Canada, the United States, Brazil, Indonesia, Vietnam, Thailand, and Russia.

In the increasingly competitive global market in the future, PAKU will, as always, serve a wide range of domestic and foreign customers with excellent quality, reasonable and competitive prices, on-time delivery, and perfect after-sales service. We welcome extensive cooperation with OEM and ODM customers.