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iPR-Series
SCHMIDT + HAENSCHOpto-electronic measuring device since 1864
• Inline, real-time refractive index, Brix or concentration measurement to monitor and control the concentration of dissolved solids in solutions, or liquids in process
• Stainless steel measuring head featuring a sapphire or YAG prism, CIP capability (pipe pigs usable)
• Continuous measurement and real-time process control with analog and digital outputs, limit comparators and internal diagnostics
• Programmable scales, Brix scale temperature corrected
iPR Process-Refractometerheads
For more than 25 years the inline Process Refractometers iPR from SCHMIDT+HAENSCH have been used successfully in the process analytical measuring technology.
IPRs measure the refractive index continuously and deter-mine thereby the concentration of dissolved solids insolution and/or the mixing proportion of binary or quasi-binary liquid mixtures.
The measurement is independent of turbidity, colour and absorption and is free of signal drifts, granting high preci-sion and better process control. The Brix measurement is temperature-compensated for the process stream conditions,generating reliably both high resolution and high precision.
The new generation of iPR measuring heads have high communication skills. The process sensors can visualize the measuring results as a single solution by data logger. It can be used as fully autonomous sensor or connected directly to a supervisory process control system or to the Universal Controller.
The new generation of iPR measuring heads gives also the possibility to construct an intelligent sensor stationwhich consists for example of several refractometers, tur-bidity measuring devices and CO
2 sensors. The Universal
Controller can also be used as a control desk for different other process sensors e.g. O
2, CO
2, pH or conductivity.
This special kind of characteristic in the communicationopens valuable economy possibilities for customers, because a separate display or special confi guration is not needed for each sensor.
IPR measuring head with water or steam cleaning unit
Universal ControllerThe Universal Controller can be used as a process controlstation where no supervisory system is yet installed.It can communicate, visualise, log and confi gure severaliPR heads.
The measurements are processed by the Universal Control-ler and can be visualized by the display with touch screen or be displayed over analog signals (4-20 mA), Ethernet or serial interface to the recorder, printer, programmable logi-cal controller (PLC) and distributed control systems (DCS). The outputs can be used for linkage of remote controllingand used by limit value switches for pump- or valves switches.Thus the direct process real time control is possible.
The new generation of iPR measuring heads are made of stainless steel and contain a prism of YAG or artifi cial sap-phire which is both mechanically very stably and chemicallyresistant against acids, sludges and solvent. It fulfi ls alsothe requirements of the food industry. The standard seal material is Viton, special material is however available(e.g. Kalrez).The iPR can be equipped with a special fl ow-rate-top madeof Tefl on for high concentrated acids, highly corrosive sub-stances and for processes of those the contact with stain-less steel is to avoid.
The iPRs can be incorporated in a simple and fl exible wayinto piping, mixing tanks, reaction boilers, cook apparatusesor evaporators by using a diverse range of welding fl anges.The preferred process connection from SCHMIDT+HAENSCHis the Varivent inline housing. This type of connection provi-des maximum fl exibility. It has hygienic approval, can handlepressures up to 15 bar’s*and holds no dead spaces around the measuring head. The standard installation enables the use of pipe pigs.
The iPR is also available as an ex-proof version. Using thewater cooling connected to the iPRs makes it suitable for high temperatures up to 150 °C. For processes, where the substances cause fouling on the prism, an optional cleaningdevice using water, steam or solvent is available.For processes where such additions are not allowed, apatented ultra sonic cleaning device is available for the Varivent mounting.For high refractive index application e.g. phenol resin, a model with a measuring range from 1.40000 up to 1.60000 RI is available.*(depending on the fl ange connection)
Data logger for visualisation of a iPR measuring head
Demonstration of the function Demonstration of the function of a Process Refractometer
Universal controller for visualization Universal controller for visualization and control of up to 10 iPRs
SCHMIDT+HAENSCH GmbH & Co.Waldstraße 80/81D-13403 BerlinGermanyPhone: +49 30 / 41 70 72-0Fax: +49 30 / 41 70 72-99e-mail: [email protected]
SCHMIDT + HAENSCHOpto-electronic measuring device since 1864
Refractometer applicationsProcess refractometers are used in many fi elds formeasuring, process control and documentation.
Chemical industryInorganic acids and basesFats and oilsFats and oilsOrganic products and dissolventsSalt solutionsPulp and paperPaints and glues
Petrochemical industryParaffi ns, waxesPetrol chemical products (ex-proof version available)ResinsSemiconductor industrySlurries, hydrogen peroxide, hydrofl uoric acids
Vehicle- and engine constructionAntifreezerOils, lubricants
Food industryJuice, fruit concentrateSoft drinksVine, beerCoffee, coffee extractCoffee, coffee extractMilk products, yoghurtTomato pate, ketchupMarmalades, jams, jellies, fruit processingCandies, chocolateStarch
Sugar industryRaw juice, thin and thick juiceMassecuite, molassesLiquid sugar, compressed waterCrystallisation pans
Textile industryPolyvinyl alcohol
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Installation in circulating process with pump
Installation in crystallizer (vessel fl ange)Inline installation (with by-pass for maintenance work)Inline installation (with by-pass for maintenance work)90° angle VariVent mounting with hose connection
Pipe work installation VariVent with ultrasonic cleaning Tefl on bypass for high corrosive liquids and semiconductor processes
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SCHMIDT+HAENSCH GmbH & Co.Waldstraße 80/81D-13403 BerlinGermanyPhone: +49 30 / 41 70 72-0Fax: +49 30 / 41 70 72-99e-mail: [email protected]
Technical specifi cation Process Refractometer iPR-series
iPR Universal Controller• User-friendly touch screen interface to your instruments providing instructions in plain text• Confi guration and maintenance of the SCHMIDT+HAENSCH process refractometers (Scale defi nition, or other calculations with the measured values)• Electronic real-time monitoring & recording (standard USB Stick or FTP over Ethernet)• Reliable archiving on the internal memory or network devices• Connect up to 10 different process instruments• IP65 proof stainless steel casing• Alarm set points• No data loss even in case of power failure!
Standard interfaces: Serial, Ethernet, Modbus (over Ethernet),PS2 (for barcode or external keyboard)
Data Logger (Multi channel recorder)
• Electronic recording replaces strip chart recorder, effects economy on consumables• Up to 6 universal inputs record all measuring signals• Coloured digital display, bargraph or curve display• Low installation depth• Reliable data archiving with internal memory and separate CompactFlash card • System-enabled: network integration and remote data transmission via Ethernet, RS232/RS485 (modem) and USB• Inputs are galvanically isolated from the system
iPR FR: 128 mm
iPR FR: 264 mm
SCHMIDT + HAENSCHOpto-electronic measuring device since 1864
Technical specifi cation Process Refractometer iPR-seriesTechnical specifi cation Process Refractometer iPR-series
iPR BasicMeasuring ranges: B1: 1.33 - 1.42 RI / 0 - 50 Brix B2: 1.38 - 1.48 RI / 30 - 75 Brix B3: 1.40 - 1.50 RI / 45 - 85 Brix B4: 1.42 - 1.53 RI / 55 - 95 BrixResolution: 0.0001 RI / 0.1 Brix
(0.00002 / 0.02 Brix upon request, depending on process)Process temperature (max.): 135°C (with water cooling installed)Process pressure (max.): 1 MPa (145 psi, 10 bar)Process contact material: Sapphire or YAG, Stainless steel, optional: Tefl onPower supply: 24 V DCLight source: 589 nm LEDInterfaces: 2 insulated 4 - 20 mA analog outputs
2 digital outputs / limit switches2 serial outputs, alternatively RS232 or RS485
Mounting accessories: VariVent (Tuchenhagen) or customer specifi edOthers: CIP and pipe pig use possible, optional: cleaning device for prism, paperless data recorder, universal controller
iPR FR (Full Range)Technical data as like iPR Basic, deviate:Measuring ranges: B1: 1.33 - 1.53 RI / 0 - 95 Brix B2: 1.42 - 1.60 RI / 50 - 100 BrixResolution: 0.0001 RI / 0.1 BrixProcess temperature (max.): 150°C (with water cooling installed)
iPR HR (High Resolution)Technical data as like iPR Basic, deviate:Measuring ranges: 1.33 - 1.372 RI / 0 - 25 Brix
Precision:Resolution: 0.000005 RI / 0.003 Brix
0.00007 RI / 0.05 Brix
iPR EX (Ex proof version)Technical data as like iPR Basic, deviate:Ex proof: Intrinsically safe, ATEX class ib II A T4Control unit: Splash proof IP 65 (NEMA 4)Power supply: 85 - 260 V / 50 - 60 HzLight source: 589 nm LEDInterface: 1 serial interface, alternatively RS232 or RS485Others: CIP and pipe pig use possible