Steuma ND OLRProcess refractometer

The Steuma ND-OLR is a process refractometer which measures the concentrations of process liquids, as e.g. the quantity of sugar dissolved in water, the vol% mineral oil in water etc.The Steuma ND-OLR must be installed in a by-pass (12mm tubing) of a process line or tank.

The Steuma ND-OLR measures concentrations based on the re-fractive index of an infrared light beam going from a sapphire prism into the process liquid. The unique optical principle of the Steuma ND-OLR is patented.The Steuma ND-OLR has a sensitivity of up to one thousandth of a per cent and is highly stable. This results in a high level of precision of the measured concentration.An optional continuous ultrasonic cleaning systems prevents any coating of product on the surface of the measuring prism not add-ing water, steam or any chemicals into the process liquid.

The measured refractive index and liquid temperature are sent to the analyser monitor, the Steuma Master.

With these values the Steuma Master calculates the concentration using the patented 3d-calibration matrix. During calibration of the instrument this matrix has been defined by the refractive index of the process liquid in dependence of the liquid temperature.

Applications

Food and Beverage: measuring soft drinks and juices, beer, apple-sauce, syrups, alcohol-distillation processes, etc.Chemical and Petrochemical: Teflon plunge bath, PVA, ammonia, cooling -and lubrication liquids, gelatines, urea, DMAC, etc.

Instruction for Use

See the manual & www.steuma.com

Advantages

• The Steuma ND-OLR can measure very low concentration variations at high precisions.

• The measurement is not influenced by temperature variations or fixed particles in the process liquid, by pressure variations, opacity or other interferences

• An unique and patented ultrasonic cleaning system prevents coating of the measuring prism

Safety Aspects

See the manual & www.steuma.com

Certificaten

CE comformEN50081-1EN50082-1EN60065

References

• Coca Cola Enterprises Nederland

• Coca Cola Enterprises Belgian

• AKZO Fibers

• Monsanto USA

Technical Specifications

Measuring range depends on the application but max. nD 1,2000 … 1,65000 max. 0 … 90 oBrix

Precision < 0,1% of the applied range

Sensitivity < 0,01% of the applied range

Drift none

Response Time T90; < 2s

Temperature compensation integrated into the calibration within the temperature range of compensation +/-5oC relative to the default temperature of the process

Process temperature max. 90 °C

Process Pressure max. 25 bar

By-pass Flow between 100 … 500 l/hour

Prism Cleaning automatic ultrasonic system

Process Connections SwageLok 12mm tubing

Power Supply 230 VAC 50 Hz, 110 VA

Housing aluminium, Anodized

Dimensions diameter 230mm, length 280mm

Weight 7,1 kg

Steuma ND OLR | Process refractormeter

The materials of the Steuma ND-OLR in contact with the process liquid are sapphire, SS316 and teflon. The instrument therefore can be used for many applications.

Other materials are available on request