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

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


  • Hassle-free and safe measurement
  • Easy check of measurement cell
  • No air bubbles, no contamination
  • Calibration at one temperature
  • Easy data transfer
  • Connection to barometer (Option / NON-CE)


Type Density / Specific Gravity Meter
Model DA-650/645/640
Measurement Method Resonant frequency oscillation
Measurement Range 0~3 g/cm3
Measurement Temp Range 0 – 96℃ (32 – 204.8°F)
Accuracy*1 Density :
・DA-650 : ±2 x 10-5/gcm3(±0.00002 g/cm3)
・DA-645 : ±5 x 10-5g/cm3(±0.00005 g/cm3)
・DA-640 : ±1 x 10-4g/cm3(±0.0001 g/cm3)
(Calibration with air and water required.)

Temp :
・DA-650 : ±0.02°C(±0.04° F)
・DA-645 : ±0.03°C(±0.05° F)
・DA-640 : ±0.05°C(±0.09° F)

Repeatability*2 Density :
・DA-650 : SD 5 x 10-6g/cm3
・DA-645 : SD1 x 10-5g/cm3
・DA-640 : 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)
Display 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
Sampling 1) Manual by syringe
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
Statistics 1) Auto or manual calculation of mean value, SD and coefficient
2) Recalculation, data deletion
Interfaces 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
Options 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)
Dimensions 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)

*1, *2:According to KEM standard measurement conditions
*3:Enquire for applicable models


ASTM D1250 Standard Guide for Use of the Petroleum Measurement Tables

ASTM D4052 Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

ASTM D4806 Standard Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel

ASTM D5002 Standard Test Method for Density, Relative Density, and API Gravity of Crude Oils by Digital Density Analyzer

ASTM D5931 Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter

European Pharmacopoeia / 2.2.5. RELATIVE DENSITY

ISO 12185 Crude petroleum and petroleum products — Determination of density — Oscillating U-tube method

ISO 15212-1 Oscillation-type density meters — Part 1: Laboratory instruments

JIS K0061 Test methods for density and relative density of chemical products

JIS K2249-1 Crude petroleum and petroleum products — Determination of density — Part 1: Oscillating U-tube method

JIS Z8804 Methods of measuring density and specific gravity of liquid

OIML R 22 Traceability and computerization of alcoholometric tables

United States Pharmacopeia–National Formulary / 31 <841> SPECIFIC GRAVITY

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