Development of Resonant Density Meter and Its Application in Tailings Backfilling

Table 1

The relationship between the frequency of vibration and the density of the liquid.

No.	Frequency of vibration (Hz)	The temperature of the liquid (°C)	Density (kg/m)		Error
			True value	Measurement
1	744.15	22.8	998	998	0.00
2	683.45	21.5	1887	1886	−0.001
3	754.78	24.6	998	998	0.00
4	748.67	23.5	998	997	−0.001
5	739..80	22.4	998	998	0.00
6	733.72	21.4	998	998	0.00
7	836.65	22.3	1.00	1.00	0.00