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RFM300-T Series

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Digital refractometer

Three decimal place Brix precision digital refractometer with peltier temperature control. Featuring wide beam optics and a new 7” touch-screen user interface, the RFM300-T Series is ideally suited for use in demanding applications within the food, beverage, chemical and industrial industries.

A large sampling area on the prism surface allows measurement of not only homogenous fluids like juices, sodas, sauces and edible 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 3-decimal place Brix RFM340 refractometer, which, following improvements to the thermodynamic control system, now has an increased measurement performance between 0-30 °Brix and so reduces potential measurement error in the critical range covering finished products like the aforementioned juices and sodas. By improving the performance at the low end of the scale, users may now trim syrup dilution to the absolute minimum without the risk of breaching manufacturing specifications.

Specifications

Specifications RFM330-T RFM340-T
Scales
Refractive Index
Sugar (°Brix)
User-defined
.
1.32 – 1.58
0-100
100
.
1.32 – 1.58
0-100
100
Resolution
Refractive Index
Sugar (°Brix)
.
0.0001 / 0.00001 (selectable)
0.1 / 0.01 (selectable)
.
0.000001 (selectable up to 6 d.p.)
0.01/0.001 (selectable up to 3 d.p.)
Accuracy
Refractive Index
.
Sugar (°Brix)
.
±0.00005
.
±0.04
.
±0.00002 (1.32 – 1.38 RI)
±0.00004 (1.38 – 1.58 RI)
±0.010     (0 – 30 °Brix)
±0.030     (30 – 100 °Brix)
Precision (Reproducibility)
Refractive Index
Sugar (°Brix)
.
± 0.00001
± 0.01
.
± 0.000005 (6 d.p.)
± 0.005 (3 d.p.)
User Scale Library 20+ pre-programmed scales including HFCS (3), sugar (4), sucrose SG (3), NaCl, Butyro, Wine Must (5), Urine SG (3), PHR-MEAN and more; plus customer programmable user scales via PC.
Reading Time Minimum 4 seconds (dependant on precision required)
Measuring Temperature Range 0°C or 10°C below ambient whichever is greater to 70°C
Temperature Sensor Accuracy ± 0.03 °C
Sample Temperature Stability ± 0.05 °C
Temperature Compensation
Sucrose (°Brix)
AG Fluids
User-defined
.
5 – 80 °C
5 – 40 °C
Simple coefficient (units/ °C) or polynomial function
Temperature Stability Checks None/delay time/repeatability/ Smart (independently selectable by Method)
Sample Illumination Light Emitting Diode 589nm (100,000+ hours)
Prism / Dish Artificial Sapphire / Stainless Steel 316 / PEEK (spill barrier)
Prism Seal Silicon/Resin
Interfaces 3 x USB (A), 1 x USB (B), 1 x Ethernet, RS232 via USB adaptor (optional accessory)
Power Instrument: 24 V DC, ±5%, <2A
External PSU: 100-240V, 50-60Hz (supplied)
Humidity Range <90% RH (non-condensing)

Optional rotors

12×0.5ml and 12×0.2ml microtubes (standard)
12×1.5/2ml microtubes (standard)
8×2/1.5ml and 8×0.5ml microtubes
6×2/1.5ml+ 6×0.5ml and 6×0.2ml microtubes
2×8-section strips for 0.2ml microtubes
4×8-section strips for 0.2ml microtubes