Digital Density Meter DA-650/DA-645/DA-640

Digital Density Meter DA-650/DA-645/DA-640

Model No.︰DA-650/645/640

Brand Name︰KEM

Country of Origin︰Japan

Unit Price︰-

Minimum Order︰1 pc

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Product Description

Density / Specific Gravity Meter <DA-650/DA-645/DA-640>

Summary of Test Method
A small volume (approximately 1 to 2 mL) of liquid sample is introduced into an oscillating sample tube and the change in oscillating frequency caused by the change in the mass of the tube is used in conjunction with calibration data to determine the density, relative density, or API Gravity of the sample. Both manual and automated injection techniques are described.

  • Easy to check measurement cell
  • No air bubbles, no contamination
  • Equipped with sampling and dry pump


Beverages, foods, petroleum, pharmaceutical, alcoholic beverages, etc.


  DA-650 DA-645 DA-640
Measurement Method Resonant frequency oscillation
Measurement Range 0 - 3 g/cm3
Measurement Temp Range 0 - 96°C (32 – 204.8° F)
Accuracy*1 Density ±2 x 10-5g/cm3
(±0.00002 g/cm3)
±5 x 10-5g/cm3
(±0.00005 g/cm3)
±1 x 10-4g/cm3
(±0.0001 g/cm3)
(Calibration with air and water required.)
Temp ±0.02°C
(±0.04° F)
(±0.05° F)
(±0.09° F)
Repeatability *2 Density SD 5 x 10-6g/cm3 SD1 x 10-5g/cm3 SD 5 x 10-5g/cm3
Minimum Sample Required 1) Approx. 1mL (Syringe) 2) Approx. 2mL (Pump)
Measurement Time 1) 1 to 4 mins (Manual) 2) 2 to 10 mins (Auto)

1) 5.7-inch colour TFT LCD; 640 x 480
2) Shows density, specific gravity, oscillation frequency,     

  temperature, concentration and other messages.
Viscosity Correction Yes

1) Manual by cyringe

2) Auto by peristaltic pump
Method Saves up to 100 different methods in built-in memory
Stability Four modes of stability according to measurement accuracy and time
Density Auto Correction

1) Saves conversion table or formula at your desired temperatures   
  according to your samples.
2) Temperature conversion table programmed according to ASTM

  standard for petroleum, petroleum products and lubricating oils.
Auto Conversion

1) Between concentration and density

2) Between temperature and density

1) Auto or manual calculation of mean value, SD and coefficient

2) Recalculation, data deletion

1) LAN           : x 1; Personal computer (PC)
2) USB 1.1        : x 2; USB flash drive, keyboard,
                    barcode reader, Epson inkjet printer *3
3) RS232C        : x 2; Dot Matrix Printer,
                    Auto Clean and Sampling Unit,

                    Multiple Sample Changer

1) Printer             : DP-600, IDP-100
2) Sampling unit, Changer : DCU-551N/H, CHD-502N/H/C

3) Software           : SOFT-CAP (Data Acquisition Software)
Data I/O

1) USB flash drive as data storage medium

2) Application Notes provided in USB flash drive
Wetted Materials PTFE, borosilicate glass, SUS304
Ambient Conditions

1) Temperature     : 5 – 35℃ (41℃ - 95°F)

2) Humudity       : 85%RH or below (No condensation allowed)
Power Supply AC100 – 240V; 50/ 60Hz (Comes with AC adapter)
Power Consumption 40W (max. 120W, min.20W)

320 (W) x 365 (D) x 250 (H) mm

(12.6 (W) x 14.4 (D) x 9.8 (H) inches)
Weight 18kg (39.7Ibs)
Export Packing in Double Carton Box

G/W 21kg; 540 (W) x 480 (D) x 460 (H) mm
(G/W 46.3Ibs; 21.3 (W) x 18.9 (D) x 18.1 (H) inches)

(May vary in some cases)

Density / Specific Gravity Meter ︰ Density / Specific Gravity Meter DA-650/DA-645/DA-640

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