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Home  >>  Products  >>  Optical Instruments  >>  DD-7 Digital Differential Refractometer
DD-7 Digital Differential Refractometer

The Ultimate Answer For Monitoring Low-Concentration Liquids

High-accuracy measurement is made possible by measuring the difference in concentrations of 2 solutions.

The DD-7 measures solutions of up to 2% Brix concentration at the extremely high-accuracy level of ±0.005% Brix.

(Note that the range of measurement gets narrower at concentrations higher than 10% Brix) When a reference solution of 8.000% Brix is used, for example, the DD-7 can measure concentrations in the range of 8% to 10% Brix at resolution of 0.001% Brix and precision of measurement of ±0.005% Brix. Note: High viscosity samples may not be suitable for measurement.

DD-7



FEATURES TECHNICAL DATA DIAGRAM PRICE LIST
 

 

Features

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  • Measurement is very simple. Inject a reference solution and a sample solution to respective injection ports, and press the Start Switch.
  • Digital readings eliminate reading errors resulting from user subjectivity.
  • Measurement data can be exported to a printer or computer via RS-232C connection.

Measurement Possibilities
  Measure low-concentration food and beverages, such as coffee, tea, diet sodas and other herbal extracts. Measure concentrations of sanitizers and disinfectants, such as hydrogen peroxide solutions, at a precision level of ±0.012% or higher.   Measure surfactants, anti-rust agents, metal-working fluids and other industrial solutions at ±0.005% Brix accuracy.  

 

Technical Data

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Technical Data
Method of Measurement: Differential optical refraction method
Measurement Range: 0.000 to 2.000% in concentration (for sucrose solution)
It is possible to measure samples with refractive index up to 1.50 (nD) by reference solution. (Samples must be low in viscosity.)
Measurement Accuracy: ±0.005% (In the case of measurement of sucrose solution (0 to 2%) at 30°C)
Unit of Minimum Display: 0.001%
Display Area: Two 24-character lines (LCD)
Light Source: LED
Light Sensor: Photo-diode (dual type)
Output RS-232C Printer: Digital printer DP-63, DP-AD (optional)
Ambient Temperature: 10 to 30°C
Power Supply: 100V to 240V, 50/60Hz
Power Consumption: 50VA
Dimensions: 36(W) x 35(D) x 14(H)cm
Weight: 5.8 kg

 

Diagram

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DD-7 Diagram

 

Prices

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Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices
RE-3930 DD-7 Digital Differential Refractometer $11,600.00



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