The Principle of the Sound Cone Density Meter:
Vibrating Wire Sensor ---------- Pair of Pressure Ceramic Sheets
1 piezoelectric ceramic is responsible for generating vibration
1 piezoelectric ceramic is responsible for collecting vibrations
The tuning fork always vibrates at the resonant frequency.
The tuning fork resonates at different frequencies in solutions of varying densities; the relationship between vibration and density is used to calculate the density.
What is the resonance frequency of a tuning fork? The resonance frequency of a tuning fork is between 1600 and 2400 Hz.
The higher the frequency, the lower the density.
Tone Generator Density Meter Technical Specifications:
Density range: 0-3 grams/cubic centimeter (3, 2.5, 2, 1.5, 1)
2. Output ranges from 4-20 mA, utilizing a 4-wire system (Why a 4-wire system is used, not a 2-wire system)
3. The tuning fork densitometer boasts an accuracy of 0.001 grams/cubic centimeter in its external promotion, with a resolution of 0.0001 grams/cubic centimeter.
4. Fork Density Meter Insertion Depth (distance from the flange to the end of the fork, short version is 125mm, long version is 2 meters)
5. The Sonometer Density Meter Display: The top shows the density value, which can be switched between kg/m³ or g/cm³ via the unit key. The bottom display shows the temperature value (the temperature of the measured medium), with the temperature sensor being a PT1000.
6. Selection: An option for a 4-20mA temperature signal output is available, with an additional cost of $1,500 per unit for the temperature output feature, or this can be recommended to customers at their discretion.
7. We do not emphasize whether the technology features include HART. The HART protocol is a digital protocol layered over the 4-20 mA signal, as there is no unified standard for HART in densitometers. It's easy to include HART as per requirements, but difficult to exclude it.
8. The tuning fork densitometer measures density based on the principle of vibration. How significant is the impact of pipeline vibration on the densitometer? The densitometer is designed based on the vibration pressure of the tuning fork, and this issue has been considered during the design and development phase. The circuit board is equipped with an automatic filtering function, which can remove other vibrations from both the circuit and software aspects to ensure accuracy.
