Product Details

Insert Tuning Fork Density Meter

Model: CJDMF-1-CR

Description

Insert Tuning Fork Density Meter is a new product which is based on the principle of vibration. Product design using plug-in installation, is widely used in the pipeline, the medium density detection, container open, closed container in the product in the mud slurry, evaporator, solvent separation, oil measurement and other fields. The density of the fluid directly dependents on vibration frequency which tuning fork receives when sensor inserts into media. Sensor’s built-in temperature sensor provides temperature compensation

Application

CJDMF-1-CR insertion density meter could apply the on-line density testing. It could be applied in the product process controlling based on the basic parameters of density, or the mass controlling system as the solid percentage or the concentration for references.

Feature

Plug in design, plug and play, and continuous online measurement

No moving parts, maintenance free, anti-corrosion design for specific conditions

Temperature compensation

Customize rod length

The environment is not sensitive to vibration, and the short rod type is suitable for high

pressure pipeline (maximum pressure 20Mpa

Working Principle

The sensor is based on the principle of component vibration, and the component part is a part of tuning fork immersed in measured liquid. The tuning fork induces vibration by a piezoelectric device fixed at one end of bottom of the fork. The vibration frequency is detected by two piezoelectric devices fixed at the other end of the fork, and then signal is amplified through the top of the circuit. The liquid density is closely related to the vibration frequency of measured liquid when measured liquid is streaming. When the measured liquid density changes, the vibration frequency of it also changes when the measured liquid is streaming.The density of the measured liquid can be calculated accurately by equation.

Technical Parameters

Density Range	0.5 – 2.5 g /cc (500 – 2500 kg/m³)
Calibration Range	0.8 – 1.2 g /cc (800 – 1200 kg/m³)
Accuracy	± 0.002 g /cc (± 2 kg/m³)
Repeatability	± 0.0002 g /cc (± 0.2 kg/m³)
Temperature Range (Process)	-50°C ~ +200°C
Pressure Rating	10MPa ~ 20MPa
Viscosity Range	0 – 20000 cP
Temperature Effect	> 0.1 kg/m³/°C (adjusted)
Impact from Pressure	none
Built-in Temperature Sensor	PT100
Wetted Parts	Stainless steel 316L Hastelloy alloy
Tine Finish	Standard, PFA coated, or Electro-polished
Power supply	24VDC,≥50 mA
Outputs	4 -20 mA,0-1000Hz,RS485 Modbus RTU
Density accuracy - process(20°C)	± 0.1% or ± 0.05% FS of indicated figures
Repeatability - process(-40 ~ +85°C)	± 0.05% FS
Process connection	ANSI 150 ~ 1500 RF DIN 50 PN16 DIN 50 PN40 IDF and RJT hygienic type
Defensibility	IP65
Outer Covering	Aluminum alloy

Calculation of Fluid Measurement

V = Q / (1/4 *π*d²)

Eg: flow rate20m³/h,pipe diameter 100mm

V = 20 / 3600 / (1/4 * 3.14 * 0.1 * 0.1) = 0.7m/sec