Density/Specific Gravity Meter

The density/specific gravity meter DA-860/850/840 is developed with the improvement in convenience and efficiency to meet market demands, inheriting reliability and technology established over many years, by Kyoto Electronics Manufacturing Co., Ltd. (KEM).



The instrument employed resonant frequency oscillation method can measure the density/specific gravity in liquid samples, and concentration of the sample using a conversion table or formulas. The required minimum sample volume is approximately 1mL when sample solution is injected manually, and the shortest measurement time is approximately 10 seconds when the viscosity correction function is disabled and the sample temperature is stable.
Data integrity (DI) support functions are equipped as standard to help maintain and manage your valuable data. The interface has been enhanced to support a variety of uses, such as a separate structure for the operation unit (tablet/PC) and measurement unit, wireless LAN connection, and connection of multiple units.
The instrument has a space-saving design and can be integrated with a semiautomatic cleaning unit (optional). Also included is a camera for viewing inside the measurement cell, improving reliability, convenience, and efficiency.

・DI support functions are included as standard

The following features are included as a standard for Data Integrity.
・User authentication : Authentication by personal ID and password is possible.
・Authority management: Possible to set authority such as editing restriction by personnel.
・Audit trail: Possible to automatically record operating history.
・Digital signature: Possible to perform electronic certification and digital signature by workflow.
・Back up/Restore/Archive: Automatic back up function in every optional period.

・Separate operation unit and measurement unit

・The measuring unit can be placed in a fume hood and operated remotely from outside the fume hood.
・The unit can be operated remotely from a separate location via a wireless LAN connection (optional).

・Semiautomatic cleaning unit

・The semiautomatic cleaning unit (optional) is a space-saving design integrated into the measurement unit and enables automatic measurement including drainage, washing, and drying.

  • High reliability

1) KEM is the only manufacturer in Japan of standard liquids that conform to ISO17034, which is traceable to national standards.
2) KEM oscillation-type density meters are calibrated with international MRA*1-compliant and ISO17025-compliant JCSS*2 laboratory
 density standards, which are traceable to international standards in the world.
 *1 Mutual Recognition Arrangement
 *2 Japan Calibration Service System
3) High accuracy (DA-860: 3×10-6 g/cm3)
  High repeatability (DA-860: 1×10-6 g/cm3)
  High reproducibility (DA-860: 2×10-6 g/cm3)

  • Equipped with a camera for viewing the measurement cell

1) Improved visibility of the measurement cell.
2) Image inside the measurement cell at the end of measurement can be saved to check the sample status.

  • Short measurement time

1) The new stability mode developed by improving the conventional algorithm was added to shorten the measurement time.
2) The shortest measurement time is approx. 10 sec when the temperature is stable.

  • Multiple management by a single operation unit

Multiple measurement units (max. 4 units) can be operated simultaneously by a single operation unit and the data can be managed comprehensively. (optional)


The instrument can be used for liquid concentration control and quality control in the following segments.

  • Determination of transaction prices and taxes for crude oil and petroleum products (fuel oil and lubricants)
  • Purity control and quality control of substances produced by chemicals (chemical products)
  • Brix measurement as production process control and quality inspection for milk products, carbonated drinks, fruit drinks, etc.
  • Measuring the concentration of alcohol and extracts in beer, sake, wine, etc.
  • Brix concentration measurement of sugar solution, syrup solution, isomerized sugar solution, seasoning, etc.
  • Pharmaceutical Densitometry Based on Pharmacopoeia
  • Quality control of oils and fats such as vegetable oils and animal oils
  • Quality control of flavors, chemicals, etc.
  • Quality control of surface treatment agents such as etching solution and acid cleaning solution


Type Density/Specific Gravity Meter
Model DA-860/850/840
Measurement Method Resonant frequency oscillation
Measurement Range 0 to 3 g/cm3
Temperature Range*1 0 to 100°C (32 to 212°F)
Accuracy Density*2: DA-860: 0.000003 g/cm3   
      DA-850: 0.00001 g/cm3
      DA-840: 0.00005 g/cm3

Temperature: DA-860:±0.02℃ (±0.04° F)
             DA-850:±0.03℃ (±0.05° F)
          DA-840:±0.05℃ (±0.09° F)

Repeatability*2 Density: DA-860: 0.000001 g/cm3
    DA-850: 0.000005 g/cm3
    DA-840: 0.00005 g/cm3
Reproducibility*2 Density: DA-860: 0.000002 g/cm3
    DA-850: 0.000005 g/cm3
    DA-840: 0.00005 g/cm3
Interfaces LAN, USB, RS-232C
Power Supply AC100 to 240V; 50/ 60Hz (Comes with AC adapter)
Power Consumption 40W (max. 120W, min.20W)
Dimensions 295 (W) x 330 (D) x 255 (H) mm (11.6 (W) x 13.0 (D) x 10.0 (H) inches)
Weight 19 kg (42 lbs)

*1: The above accuracy is guaranteed in the temperature range of 0 to 90°C with all series.
*2: According to ISO 5725 under ideal conditions.


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





■Density Specific Gravity Meter DA-860 850 840.pdf

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