Office (248) 661-6246    
Toll-free (888) 528-3247    
Javascript DHTML Drop Down Menu Powered by

Density Logo

  General Concentration Meter - WBA-504/505

 General Concentration Meter WBA-504/505 

    • The two built-in sensors each for density and refractive index need just small amount of sample liquids in order to simultaneously measure both density (specific gravity) and refractive index.
    • The built-in thermostat controls measurement temperature in a short span of time to preset degree for precise and quick measurements of both density (specific gravity) and refractive index. The measuring units each for density (specific gravity) and refractive index can individually control and preset temperature.
    • Density measuring unit features viscosity correction for samples of higher viscosity, allowing measured density values to be compensated.
    • Measuring range is wide enough to measure any kinds of samples: Density : 0 to 3 g/cm3 Refractive index: 1.32000 to 1.58000 (WBA-505)
    • With optional CHD-502N Multiple Sample Changer, a series of samples can be automatically and continuously measured in an attended manner.
    • The optional PC card allows you to expand the versatility of operations including more storage space of measurement parameters and data as well as a user's own concentration conversion tables.
    • The optional data acquisition software designed for WBA-504/505 allows you download measurement results to PC so that the data can be further processed according to a user's needs and requirements for easier management of acquired data.
    • The commercially available bar code readers compatible with RS-232C serial interface can be connected to AUX port and conveniently read sample ID and lot number.

Specifications of General Concentration meters
Type and Model name WBA-504 WBA-505
Measuring method
Density : Resonant frequency detection
Refractive Index : Detection of critical angle with Na-D line
Measuring range
Density : 0 - 3 g/cm3
R.I. : 1.32 - 1.70
Density : 0 - 3 g/cm3
R.I. : 1.32 - 1.58
Measuring temperature 15 - 50°C
Accuracy Density ±0.00005 g/cm3
When calibrated with pure water and dry air
±0.0001 ±0.00005(R.I. ; 1.32 ~ 1.40)
±0.0001 (R.I. ; 1.40 ~ 1.58)
Temperature ±0.05°C
Minimum sample required 6ml
Auto viscosity correction Built-in
Measuring time 1 - 4 minutes by manual
2 - 10 minutes by programmed
Display LCD with back light
Sampling Manual with syringe
Automatic by DCU-551 Auto Clean and Sampling unit (option)
Calibration "Air & Water " and "Other STD"
Auto statistical data Mean value; Standard deviation (SD) ; Relative SD
Recalculation Data can be recalculated
Printout IDP-100 impact dot printer (Option)
Data I/O PC card (option) for additional data storage and 
application method
External control
Personal computer : RS-232C serial interface
External printer : RS-232C serial interface
AUX (Barcode) : RS-232C serial interface
Sample changer : Serial interface
PC card: Conform to PCMCIA standard
Power source 100 - 120 or 200 - 240V AC ; 50/60Hz
Power consumption Approx. 140W
Dimension 288(W) x 468(D) x 442(H) mm
Weight Approx. 19kg
Supplied parts Power cord 1 pce., Desiccant 1 pce.,
Desiccant tube (with joint) 1 pce.,
Sampling tube (with joint) 1 pce., Silica gel (500g) 1 pce.,
Connecting tube A (with joint) 1 pce.,
Connecting tube B (with joint) 1 pce.
Operation manual 1 pce., 
and others

             KEM Logo.gif (1359 bytes)KEM logo2.gif (461 bytes)
                                                              KEMlogo3.gif (2597 bytes)