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The RFM990-AUS32 is an extremely high accuracy Refractometer specifically designed to meet the stringent needs of the chemical manufacturing industry supplying Urea solutions for the automotive industry and fleet management.
Of particular interest is it’s compliance with the strictest of ISO procedures in relation to the manufacture of Diesel Exhaust Fluids, such as AUS and AdBlue®.
ISO 22241-2 dictates the highest level of measurement must be achieved under the tightest limits of temperature control. The RFM990-AUS32 is the only refractometer on the market that complies in terms of refractive index and temperature measurement/control specifications. In addition, the instrument is fitted with specific Urea scales and temperature compensation, so even the slightest movement in temperature will be corrected.
Being part of the RFM900 series of refractometers, user of the RFM990-AUS32 will also benefit from other unique features such as RFID user identity/clearance, significant on-board data storage, calibration audit trails and a methods system that makes changing instrument parameters a simple two-button process. Full details of these features can be seen by visiting the RFM900 section of the Bellingham + Stanley Internet site.No matter how good the instrument performance, without good verification, it is not possible to confirm the instrument meets the specification laid down in ISO 22241-2. Bellingham + Stanley offer a new UKAS Certified Reference Material for this purpose at precisely the correct RI value.
% Urea mass/mass (AUS32)
|Other Scales||User defined – Urea % (AUS32), DEF, FSII etc. or custom scales, loaded by PC software|
|Automatic Temperature Compensation||Urea, ICUMSA (sugar), AG, None or User Defined|
|Temperature Control||Internal Peltier Device|
|Temperature Accuracy||±0.02 °C (at 20 °C)|
|Temperature Stability||±0.01 °C (at 20 °C)|
0 °C or
10°C below ambient which ever is the greater to 80°C
|Temperature Stability Checks||
|Sample Temperature Range||20 to 30 °C|
|Reading Time (seconds)||15|
|Ambient Humidity Range||< 90% RH|
|Prism Dish||316 Stainless Steel|
|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|
|19-73||RFM990-AUS32 Automatic Digital Refractometer for high accuracy measurement in accordance with ISO 22241-2 – Analysis of Aqueous Urea Solutions.|
Certified Reference Material for AUS-32
NOTE: DEF is commonly used to describe a diesel exhaust fluid such as AdBlue®. DEF is also used to describe an aqueous urea solution scale for measuring diesel exhaust fluids such as AdBlue®. AdBlue® is a registered trademark of the VDA Verband der Automobilindustrie e.V.