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Schmidt & Haensch are a leading German manufacturer of inline refractometers
Please take a look at the range of instruments below If you have an application, please give us a call 01442 876 777 |
iPR-EX In line refractometer
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iPR - EX Automatic process refractometer
A fully automatic process refractometer for direct measurement of dissolved solids, process monitoring and control. Principle of the critical-angle refractometer with sapphire prism and high-resolution photodiode array; no influence of color and opacity of the medium on the measuring result. Measuring head made of stainless steel, chemical resistant, food safe, hygienic, for process temperatures up to 120 °C (with connected water cooling) and pressures up to 1 MPa. The explosion protection version of the process refractometer consists of an intrinsically safe, single-certified sensor, which is installed in the hazardous area. The measuring signals are routed to the non-explosive area via a special cable (maximum length 500 m) and connected to 4 zener barriers. The connection to the central control system is realized with a RTU Modbus or serial RS 485 interface. Alternatively, Schmidt + Haensch offers a control unit, which is also installed outside the hazardous area. The 7 “touch screen is individually configurable. The measured data can be output via Ethernet as a 24 V or 4-20 mA signal or control a relay. For data transmission to other systems, serial RS 232, 485 interfaces, a CAN bus or UPC server are available. Up to two measuring heads can be connected at the same time. |
Main Specification Standards ATEX II 1 G Ex ia IIC T4 Ga IEC in preparation Measuring range 1,32000 – 1,52000 nD Resolution 0,00001 nD Precision ±0,00014 nD Temperature & Pressure Ambient temperature -20 °C to +65 °C Process Temperature -20°C to +120 °C* Temperature resolution/precision 0.01°C / ±0.2°C (0° to 70°C) Process pressure 0 to 1 MPa (145 psi, 10 bar) Additional information Prism Sapphire Wetted parts Sapphire (prism), stainless steel, FKM Protection class IP 67 Light source / wavelength LED, 589 nm Interface, switchesModBus, RS485 and 24V with external Zener barriers Dimensions330mm x 149mm (length x diameter) Weight9600g Control unit Operation1 and 2 measuring headsets are available, connectable with built-in Zener barriers Display7" Touchscreen, 800x480 pixel InterfaceEthernet DIN rail parts (expandable)Switch inputs (24 V) and outputs (24 V / relay / 4-20mA) / Communication (RS232 / RS485), CAN, UPC Server Highlights Configuration of measuring head and outputs / Adjust switching thresholds and analog outputs / Concentration and other scales user programmable Power85V ... 265V 50/60Hz HousingIP65 * with cooling by cooler circuit only, electronic max. +65°C |
SENSO REF compact refractometer
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High precision in a compact design
The SensoRef sensor from Schmidt + Haensch opens up a new field of miniaturization for process refractometers. Thanks to the new optical design, the actual sensor has the size of a golf ball. It design requires fewer parts, resulting in a highly efficient and compact construction. As a true sensor, it can be used in applications which cannot be met by conventional refractometers. If the application requires minimal volumes, has space limitations or requires mobile operation, Schmidt + Haensch has the ultimate solution in the ultra compact Senso Ref regractometer. Designed to be easily integrated with common process controls, it can be connected directly to a PLC via Modbus or RS-232 interface. Integrated functions such as temperature measurement, cleaning control and filling level detection ensure a self-monitoring system. |
Main specifications
Measuring scalesRefractive Index (RI), Brix (Bx) Measuring range1.333 RI – 1.387 RI / 0 - 32 Bx Resolution 0.0001 RI / 0.1 Bx Precision ± 0.0007 RI / ±0.5 Bx Wavelength 589 nm Temperature Operating temperature- 10 °C to +50 °C Environmental temperature-40 °C to +65 °C (recommended 5 °C - 35 °C, dry) Additional information Wetted partsSapphire, stainless steel InterfacesRS485 (4 pin M8 plug) Power supply12-28 VDC Currentmax. 30 mA (at 24 V) IP classIP67 Process pressure (max.)100 kPa (14,5 psi, 1 bar), max. 4 bar Weight220g Length54mm Diameter40 mm (DN40), handle diameter 54 mm |
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iPR Compact² refactometer
PDF data sheet
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Compact in-line refractometer
NEW – Now with extended measuring range! Compact in-line refractometer iPR Compact² with very short response time for continuous measurement and real-time process control with one analogue data output. It’s characterized by minimized dimension and weight and has an excellent price-performance ratio. The iPR Compact² allows the inline, real-time refractive index, Brix or concentration measurement to monitor and control the concentration of dissolved solids in solution or liquids in process. The compact stainless steel measuring head with YAG Prism is equipped with an integrated electronic for direct connection to supervisory system or PC. Available in two versions (aluminum and stainless steel) with different process temperature ranges ! Designated market
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Main specification
Measuring range 1.3320 - 1.4535 nD 0 - 65 Brix Resolution 0.0001 nD / 0.05 Brix Precision± 0.0002 nD ±0.15 Brix (at 20 °C) Temperature Ambient temperature0 °C - 45 °C Process temperature (max.)Aluminum: +60 °C Stainless steel: +80 °C Process temperature (min.)-10 °C Process pressure (max.):1 Mpa (145 psi, 10 bar) Additional information Prism YAG Wetted parts YAG, stainless steel optional: PTFE Protection classIP 69 K tested TÜV Rheinland Light source/wavelength589 nm LED Power supply24 VDC Interfaces, switches1 insulated 4-20 mA, ( Brix 0 - 50 with ATC) 1 digital output/limit switch serial outputs RS232, RS422 and USB Prism cleaning Optional: water, steam or ultra sonic cleaning Ex-proof version No |
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iPR B³ new design
PDF data sheet
iPR B³ Process refractometer
The iPR B³ automatically operating process refractometer measures the refractive index continuously and thus, the concentration of a binary or quasi-binary liquid mixture. The measurement is independent of light intensity from the light emitting diode (LED) and is free of signal drift, granting high precision and better process control. Colour, turbidity, undissolved particles or gas bubbles do not affect the measurement. The newly developed process refractometer iPR B³ replaces the well etablished iPR Basic².The stand-alone sensor with integrated electronic ranks between the compact model iPR C² and the full range model iPR FR². The new sensor comes with a measuring range up to 90% Brix (refractive index 1.52). It is not only suitable for almost all applications in the field of food production and pharmaceutical industries, but also for many processes in the area of mechanical and automotive engineering and chemistry. The stylish stainless steel housing of the sensor is partially equipped with a blue anodized air cooling jacket. This cooling jacket protects the electronic components from overheating in process temperatures up to 80 ° C. CIP cleaning at the prescribed temperatures is of course possible but the instrument must be switched off. The special design and electronic equipment makes it highly flexible and easy to use. The iPR B³ is equipped with two switch outputs to run, for example, a connected valve (max. 1A, 24 DC) or relay. With this feature is it also possible to control the cleaning of the measuring prism via a magnet valve. The iPR B³ measuring head can be installed in pipes, reactors, vessels and mixing tanks, using different weld-in flanges. Our preferred joint system is VariVent. It allows easy installation through a plug-in clamping method. Some processes may require cleaning of the sensor face. SCHMIDT + HAENSCH offers an optional cleaning nozzle or a special designed ultrasonic cleaning device. In addition to known standard scales such as Brix, Oechsle, ethylene glycol, sodium chloride, urea, etc. SCHMIDT + HAENSCH offers also customized scales. |
Main specifications Measuring range1,32000 – 1,52000 nD 0 – 90 Brix Resolution0,00001 nD 0,01 Brix Precision±0,00014 nD ±0,1 Brix (at 20 °C) Temperature Ambient temperature0 °C - 45 °C Process Temperature (max.)+90 °C Process Temperature (min.)-10 °C Process pressure (max.)1 MPa (145 psi, 10 bar) Additional information PrismSaphire Wetted parts Saphire, stainless steel, optional: PTFE Protection classIP 69 K tested TÜV Rheinland Light source/wavelength589 nm LED Interface, switches2 insulated 4-20 mA analog outputs 2 digital outputs (limited switches, 1 Ampere) serial outputs, RS 232 or 422 and USB Prism cleaning Optional: water, steam or ultra sonic cleaning Power supply24 V DC Dimensions 241 mm x 136 mm (length x diameter) Weight 3790 g |
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iPR FR²
PDF data sheet
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Automatically operating process refractometers
The automatically operating process refractometers iPR FR² (Full range) measure the refractive index continuously and thus, the concentration of a binary or quasi-binary liquid mixture. The measurement is independent of light intensity from the light emitting diode (LED) and is free of signal drift, granting high precision and better process control. Colour, turbidity, undissolved particles or gas bubbles do not affect the measurement. You can choice from 2 wide measuring ranges. The iPR FR² is a stand alone process sensor with integrated, iluminated display , which does not require an external electronic unit. Its special design and electronic configuration makes it highly flexible and very easy to operate. The programming with a Windows software is also very easy. Optional a Data Logger is available. The stainless steel measuring head is:
The iPR measuring head can be installed in pipes, reactor vessels, mixing tanks, kettles, boiling pans and evaporators, using different weld-in flanges. |
Main specification
Measuring rangeB1: 1.3320 - 1.5300 / 0 - 100 Brix Resolution0.00001 nD 0.01 Brix Precision± 0.00007 nD ±0.05 Brix (at 20 °C) Temperature Ambient temperature0 °C - 45 °C Process Temperature (max.)+ 80 °C without water cooling +150 °C with water cooling installed Process Temperature (min.)-10 °C Process pressure (max.)1 Mpa (145 psi, 10 bar) Additional information Prism YAG Wetted parts YAG, stainless steel optional: PTFE Protection class IP 69 K tested TÜV Rheinland Light source/wavelength589 nm LED Power supply24 VDC Interfaces, switches2 insulated 4-20 mA analog outputs 2 digital outputs (limited switches, 1 Ampere) serial output, RS 232 or 422 or USB Prism cleaning Optional: water, steam or ultra sonic cleaning Ex-proof version Yes, ATEX Class Ex II 1G Ex ia II C T4 |
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iPR HR²
PDF data sheet
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Fully automated process refractometer with very high resolution
The automatically operating process refractometers iPR HR² (High Resolution) measure the refractive index continuously and thus, the concentration of a binary or quasi-binary liquid mixture. They are especially develops for the check of liquids with very low solid concentrations (e.g., Light drinks). iPR HR² own a high resolution and precision. The iPR HR² is a stand alone process sensor with integrated, iluminated display, which does not require an external electronic unit. Its special design and electronic configuration makes it highly flexible and very easy to operate. The programming with a Windows software is also very easy. Optional a Data Logger is available. The stainless steel measuring head is:
The iPR measuring head can be installed in pipes, reactor vessels, mixing tanks, kettles, boiling pans and evaporators, using different weld-in flanges. Applications
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Main specification
Measuring range1.3320 - 1.3720 / 0 - 25 Brix Resolution0.000005 nD / 0.002 Brix B2: 0.00002 nD / 0.02 Brix Precision±0,00004 nD ±0,02 Brix (±0,01 - 2% Brix at 20 °C) Temperature Ambient temperature0 °C - 45 °C Process Temperature (max.)+ 80 °C without watercooling +100 °C with water cooling installed Process Temperature (min.)-10 °C Process pressure (max.)1 Mpa (145 psi, 10 bar) Additional information Prism YAG Wetted parts YAG, stainless steel optional: PTFE Protection class IP 69 K tested TÜV Rheinland Light source/wavelength589 nm LED Power supply24 VDC Interfaces, switches2 insulated 4 - 20 mA analog outputs 2 insulated 4 - 20 mA analog outputs 2 serial outputs RS232 or RS 422 and USB Prism cleaningOptional: water, steam or ultra sonic cleaning Ex-proof version No |