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RFM700-M Series

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Refractometer

Robust, low cost, fully automatic instruments that are ideally suited to the food, sugar and beverage industries but can also be used in many other non-food applications where temperature control is not required, for example measuring sugar (°Brix) concentrations in the food processing industry.

Commonly, the RFM700-M series refractometers are supplied to operate in the °Brix scale with results temperature compensated to 20°C in accordance with ICUMSA. Additional user scales provide measurement in different formats such as Refractive Index (RI) various wine, urine specific gravity & automotive scales as well as allowing custom scales to be loaded in accordance with product data.

Specifications

Specifications RFM712-M RFM732-M RFM742-M
Scales
Refractive Index
Sugar (°Brix)
User-defined

.
1.32 – 1.42
0-50
100

.
1.32 – 1.54
0-100
100
.
1.32 – 1.54
0-100
100
Resolution
Refractive Index
Sugar (°Brix)
.
0.0001
0.1
.
0.0001
0.1
.
0.00001
0.01
Accuracy
Refractive Index
Sugar (°Brix)
.
±0.0001
±0.1
.
±0.0001
±0.1
.
±0.00005
±0.04
Precision (Reproducibility)
Refractive Index
Sugar (°Brix)
.
± 0.00005
± 0.05
.
± 0.00005
± 0.05
.
± 0.00001
± 0.01
User Scale Library 20+ pre-programmed scales including HFCS (3), Sugar (4), Honey, NaCl, Wine Must (5), Urine SG (3), Glycol (2), Urea, FSII and more; plus customer programmable user scales via PC.
Reading Time Minimum 4 seconds (optional time delay)
Temperature Control None – Automatic Temperature Compensation (ATC)
Temperature Compensation ICUMSA, AG, User, none
Sample Temperature Range 0-100 °C
Measuring Temperature Range 5-40 °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 Delay in seconds or none
Sample Illumination Light Emitting Diode 589nm (100,000+ hours)
Prism / Dish Artificial Sapphire / Stainless Steel 316 / PEEK (spill barrier)
Prism Seal Silicon/Resin
Interfaces 1 x USB (A), 1 x USB (B), RS232 via USB adaptor (optional accessory)
Power Instrument: 24 V DC, ±5%, <1A
External PSU: 100-240V, 50-60Hz (supplied)
Humidity Range <90% RH (non-condensing)