HDS-DNY series intelligent differential pressure online density meter which developed by our company is consists of primary density (or concentration) meter, the signal acquisition device of the liquid flow and pressurechange, the signal acquisition
device of liquid temperature, the density of the signal processing of secondary instrument.
Ⅰ.When we take online detection of the fluid density change and concentration change, the equipment has introduced the signal of liquid flow rate and pressure change, in order to improve detection accuracy, reduce the effective of liquid flow and pressure change, further correct liquid density and concentration changes. It is useful to solve the questions of traditional pressure density meter precision which affected by fluid flow and pressure change.
Ⅱ. Density and concentration can be displayed at the same time. The equipment has concentration and density of two independent analog outputs, the upper and lower limit alarm output of the relay.
Ⅲ. It can used in continuous on-line measuring liquid density and without interruption, it can be directly used in the production process control, it can used in mobile and stationary liquid. It also be suitable for pipes and tanks installations.
The components which contact with liquid are making of stainless steel. The equipment is safety and health.
The kinds of intrinsic safety type can use in hazardous environment, the kinds of health type can be used in food production site.
Ⅰ. The range of density measurement: 0.3 ~ 0.5g/cc.
Ⅱ. The accuracy of density measurement: The highest accuracy is +0.0002g/cc (According to the application).
Ⅲ. Concentration measurement precision: +0.2% ~ +1%.
Ⅳ. Mass flow measurement precision: +0.5 ~ +1%.
Ⅴ. Instruction signal processing ways: The equipment use the multipoint signal to calculate the calibration. (The general is flexible chose between 2 ~ 15 points, and the most is up to 15 points calibration).
Ⅵ. The time constant: 0 ~ 10s (fast), 10 - 100s (slow).
Ⅶ. Environment temperature: The temperature of the host is -10~45℃，the temperature of the probe is -20 ~ +65℃.
Ⅷ. Environment humidity: The humidity of the host is 85%.
Ⅸ. The output signal: It use two road 12 full isolation analog output, it has two roads 4-20mA instantaneous density (concentration) signal, 4-20mAPID control output, it also support RS485 communications output.
Ⅹ. Upper limit and lower limit alarm: We can set it by keyboard. The equipment can provide the relay contact output.
Ⅺ. The size of the host appearance: 143x73x310mm, the size of the host holes is 138x68mm.
The instantaneous filtering constant is 0 - 99.
The signal transmission distance: standard distance is 800m (The longest is up to 3000m)
The display mode: With removing large LCD dot matrix display screen.
The type of installation: Secondary instrument, plate mounted, wall hanging type.
The sugar industry and the wine - making industry use it to test density (concentration) of juice, syrup, alcohol, etc.
Dairy industry uses it to test the density (concentration) of milk, lactose, cheese, cream cheese, lactic acid, etc.
Mine industrial uses it to test the density (concentration) of potash, salt, phosphate, calcium compounds, limestone, etc.
It also could test the density (concentration) of lubricating oil, aromatic, kerosene, vegetable oil, tomato juice, grape juice, lemon juice.
The pulp and paper industry use it to test the density (concentration) of black slurry, green pulp, pulp washing, white pulp, caustic, etc
Beverage industry uses it to test the density (concentration) of beer, soft drinks, fruit wine, instant coffee, etc.
Chemical industrial uses it to test the density (concentration) of acid, caustic soda, urea, sodium chloride, sodium hydroxide, etc.
The natural gas of Petrochemical industry, , lubricants, oil/water interface, etc.
The instruction of selection
The primary instrument selection table of differential pressure online density meter
Specifications and code
HDS - DNY
Differential pressure online density meter of industrial
Installation and shape
1. The vertical installation of cylinder connected with controller.
2. The square flange connected with vertical installation.
3. The side installation of bend pipe or the side installation of flange.
The spacing of diaphragm capsule (sensor)
Longer than 500mm
The spacing of flange sensor
Distance defined by the user
The range of measuring
0 ~ 1g/cm3
0 ~ 2g/cm3
0 ~ 3g/cm3
The installation of flange
A typical example: HDS – DNY – A10M3H8
The following is the default configuration
The display mode
LCD intelligent display table (panel mounting, hanging)
The output signal
4 ~ 20mA
The input power
The materials of diaphragm structure
316 stainless steel (other available)
Transport packing and delivery
Packed in wooden cases, railway express mail