Bellingham + Stanley RFM300-M Refractometer

The all new RFM300-M series refractometers are the ultimate instruments for installation in demanding factory environments as well as for use as a primary quality control tool.

  • Features
  • Specifications
  • Order codes

NEW for 2017, the RFM300-M brings the popular 300+ refractometer up-to-date with a line of high precision Peltier temperature controlled benchtop refractometers. With wide beam optics and a durable membrane touch-button interface with 4" high-res display, the RFM300-M Series is ideally suited for use in demanding applications within the food, beverage, chemical and industrial industries.

Heritage

Designed for use in harsh environments and built upon Bellingham + Stanley's 100 year legacy of quality instrumentation. Incorporating wide beam optics, RFM300-M Series refractometers are capable of measuring non-homogenous samples including fruit juice with pulp, opaque chemical compounds and emulsions that are normally difficult to read with optical refractometers or those digital refractometers that do not address the need to measure "difficult samples."

The instrument's new case is ergonomically designed so that any spills are dealt with by the sloping shape of the case or by the PEEK spill barrier that surrounds the shallow, easy-clean stainless steel prism dish.

Temperature Controlled

A single large fan helps to regulate temperature as part of the Peltier control system. Operating at low speeds creates less noise whilst still offering the same excellent temperature control you'd expect to find in a Bellingham + Stanley refractometer. Positioned at the base of the unit, the RFM300-M's fan is designed to be protected from harsh environments, whilst still being easily accessible for maintenance.

Durable display & RFID technology

Whilst we believe that the touchscreen technology seen on our RFM-T Series refractometers is a class-leading interface, sometimes our customers want something a little more... tactile. That's where the RFM300-M comes in.
With a durable membrane made from chemical and scratch resistant polyester, the RFM300-M offers a more tactile approach, allowing users to navigate menus at the touch of a button.

Specifications RFM330-M RFM340-M
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
0.000001 (selectable to 6 d.p.)
0.01/0.001 (selectable to 3 d.p.)
Accuracy
  Refractive Index

  
  Sugar (°Brix)

±0.0001


±0.1

±0.00002 (1.32 – 1.38 RI) 
±0.00004 (1.36 – 1.58 RI)

±0.010 (0 – 30 °Brix) 
±0.005 (30 – 100 °Brix)
User Scale Library on-board 20+ preprogrammed scales including HFCS (3), wine (5), sugar (4), urine SG (3), Urea, sucrose SG (3), FSII, NaCl, Butyro etc. 
Plus customer programmable scales via PC.
Presser Type Polyacetal
Reading Time Minimum 4 seconds
Measuring Temperature Range 0 °C or 10 °C below ambient whichever is the 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 SMART, DELAY, REPEATABILITY, NONE  (independently selectable by Method)
Ambient Humidity Range <90% RH (non-condensing)

Physical Specification

Prism Artificial Sapphire
Prism Dish 316 Stainless Steel / PEEK (spill barrier)
Prism Seal Silicon/Resin
Interfaces 3 x USB (A), 1 x USB (B), 1 x Ethernet, 1 x Serial (RS232)
Sample Illumination Light Emitting Diode (life 100,000hr +) 589nm
Temperature Control Peltier
Power Supply External 100-240V, 50-60Hz. Supplied with instrument
Order Code Description
19-35 RFM330-M Peltier temperature controlled refractometer with latest integral 4" full colour high resolution display, robust switch membrane keypad and USB/LAN connectivity. Supplied with pack of two RFID tags, instruction manual and certificate of conformity.
19-45 RFM340-M high precision Peltier temperature controlled refractometer with latest integral 4" full colour high resolution display, robust switch membrane keypad and USB/LAN connectivity. Supplied with pack of two RFID tags, instruction manual and certificate of conformity
22-498 Spare filters for RFM-T/M models (pack of 12)
55-14 Dot-matrix impact printer, 24 column: Serial RS232, 230V (UK/Euro plug)
55-16 Dot-matrix impact printer, 24 column: Serial RS232, 110V (USA plug)
54-02 Serial interface cable for printer