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RFM300+ Refractometers

RFM300+ refractometers encompass attributes of their predecessors and also
offer a wider refractive index range and Peltier temperature control. A shallow,
easy to clean prism dish houses a new, single sapphire prism optical system
protected by a sample presser that may also be used to instigate a
measurement without the need to press the read button. A large sampling area
on the prism surface allows measurement of not only homogenous fluids like
edible and mineral oils but also difficult to read samples like fruit pulps and
industrial resins.

The instrument is available in two formats, the most popular being the 2-decimal
place RFM340+. Intelligent software ensures rapid temperature response to
change in prism temperature, whilst the SMART temperature stability check
makes sure that the result is displayed only when the sample is stable. A
methods system allows rapid configuration of instrument setup and provides
limit checks against stored data as well as product specific offsets and acid
corrections. Over 700 readings may be stored within the instrument memory
and the on-screen menu may be displayed in a number of different languages.

In 2009, the RFM300+ series has been upgraded to incorporate the new ‘blue screen display’ with enhanced user software to provide an improved user experience.  Optional software is also available at point of order to allow use in an environment controlled by FDA regulation 21 CFR Part 11.

Designed with the most vigorous environments in mind, the RFM300+ can be
fitted with optional extras that allow use in wet and humid factory environments.

Specifications RFM330+ RFM340+ Scales   Refractive Index   Sugar (°Brix)   User-defined (100 scales - configurable) 1.32 – 1.58 0-100 Yes 1.32 – 1.58 0-100 Yes Resolution   Refractive Index   Sugar (°Brix) 0.0001 0.1 0.00001 0.01 Accuracy   Refractive Index   Sugar (°Brix) ±0.0001 ±0.1 ±0.00004 ±0.03 Presser Type Polyacetal Polyacetal Reading Time Minimum 4 seconds Measuring Temperature Range 10 °C below ambient to 70 °C Temperature Sensor Accuracy ± 0.03 °C Sample Temperature Stability ± 0.05 °C Temperature Compensation   Sucrose (°Brix)   AG Fluids   User-defined 5 – 70 °C Simple coefficient (units/ °C) or polynomial function Temperature Stability Checks Independently selectable by method Ambient Humidity Range <90% RH

Physical Specification Prism Artificial Sapphire (Single). 12mm sample area diameter Prism Dish 316 Stainless Steel / PEEK Prism Seal Silicon/Resin Interfaces 1 Parallel (printer), 2 x Serial (RS232) Sample Illumination Light Emitting Diode (life 100,000hr +) 589nm Temperature Control Temperature Control Power Supply External 100-240V, 50-60Hz. Supplied with instrument

Order Code Description 22-30 RFM330+ Refractometer incl. standard power supply and instructions 22-40 RFM340+ Refractometer incl. standard power supply and instructions 22-80 Enhanced Protection Pack 55-250 Waterproof Power Supply Unit 26-155 Splash Cover 22-121 Optional on-board software and user license – 21 CFR Part 11 (factory option only at time of manufacture)