REFRACTOMETER
DHR
This handheld digital refractometer DHR by SCHMIDT + HAENSCH allows for rapid, on-site measurements of liquid substances with high or low viscosity.
The full view of the LCD screen of the DHR displays reliable results with high precision (five digits) in 2 seconds. SCHMIDT + HAENSCH’s DHR can be used in agriculture, e.g. to determine the point of harvest, or in the automotive industry, e.g. to analyze defreezers.
| Calibration | Distilled Water |
| Prism Material | Optical Glass |
| Sample Temperature | 5 – 60 °C |
| Ambient Temperature | 5 – 40 °C |
| Automatic Temperature Correction | 5 – 70 °C for 0 – 80 Brix |
| Dimensions (LxWxD) | 115 x 54 x 30 mm |
| Weight | 85 g (without batteries fitted) |
| Power | 2 x AAA batteries |
| Ratings & Compliance | IP65 Dustproof/Water Resistant, CE, RoHS |
ATR L Dispersion Refractometer
SCHMIDT + HAENSCH is proud to present a robust, multi-wavelength refractometer, capable of performing simple dispersion measurements at seven wavelengths over the full visible range. The digital, fully automatic spectral refractometer ATR L consists of an electronic unit separated from the robust stainless steel measuring unit.
| Measuring scales | Refractive index (RI) |
| Measuring range | 1.33200 – 1.70000 RI* / 100% Brix |
| Resolution | 0.00001 RI* / 0.01 Brix |
| Precision | ± 0.00004 RI* / ± 0.03 Brix |
| Reproducibility | ± 0.00004 RI* / ± 0.03 Brix |
| Measuring time per sample | 20 sec for all 7 wavelength after temperature stabilisation; single sample measurement |
| Ambient temperature | + 15° to + 40°C |
| Automatic temp. compensation Operational temperature Temperature stability Temperature precision | Solid state Peltier-thermostatisation + 10°C to + 80°C 0.01°C ± 0.03°C |
| Detector | CCD-linear array with 2048 elements |
| Sample compartment | Used materials: stainless steel, Black Delrin®, Teflon®, Viton®, FFKM sealing |
| Prism | YAG |
| Prism | YAG |
| Light source / wavelength | 7 discrete LED’s with fixed wavelengths 400, 450, 490, 545, 590, 660, 700 nm (others on request), wavelength accuracy ± 2 nm |
| Display | LCD, 16 x 16 characters, back illuminated |
| Operation | 20 key membrane including function keys |
| Interfaces /Communication | 1 x RS232 C, 1x parallel, USB optional |
| Standards | European and international Pharmacopoeia, various ASTM, ISO and DIN standards |
| Dimensions / Weight | Mesuring head, stainless steel: 260 x 190 x 220 mm (w x h x d); control unit: 220 x 110 x 290 mm (w x h x d); complete unit 8 kg |
ATR P
The robust ATR P critical angle refractometer is especially designed for applications in the sugar industry and for the determination of mixing ratios or mass fraction. The system consists of the robust and waterproof ATR P measuring head made from stainless steel and the L-Controller electronic unit with a high resolution 7″ TFT Touchscreen.
| Measuring scales | Refractive Index (RI), Sucrose (%Brix); Up to 1000 scales freely definable |
| Measuring range | 1.32000 – 1.55000 RI / 100% Brix |
| Resolution | 0.00001 RI / 0.01% Brix |
| Precision | ± 0.00002 RI / ± 0.02% Brix |
| Reproducibility | ± 0.00001 RI / ± 0.01% Brix |
| Ambient temperature | + 10 °C to + 40 °C |
| Automatic temperature compensation | + 5 °C to + 50 °C |
| Temperature measurement | NTC sensor for measurement of sample temperature placed inside the prism |
| Temperature control | Temperature control prism / sample by external water bath |
| Temperature range | 5°C / 50°C |
| Measurement mode | Single sample or flow through measurement / horizontal or vertical usage |
| Prism | Sapphire |
| Light source / wavelength | LED, interference filter 589 nm |
| Display | 7″ Touchscreen, 800 x 480 pixel, 16 bit colors |
| Operation | Touchscreen, keyboard**, mouse**, barcode reader**, remote via PC** |
| Interfaces | 1 x RS232 C serial, 3 x USB (A), 1 x USB (B), 1 x Ethernet, Easy connection of keyboard, mouse, printer, barcode reader, PC and network |
| Conformity | International Pharmacopoea, ASTM, AOAC, DIN, FDA, ICUMSA and others |
| Weight / dimensions | Measuring head: 4.5 kg; 200 x 160 x 135 mm (width x depth x height); L-Display: 3.0 kg; 240 x 190 x 150 mm (width x depth x height) |
ATR BR
The SCHMIDT + HAENSCH ATR-BR is a stand-alone, critical angle refractometer for measuring liquid media from low to high viscosity, independent of opacity and color. It is adaptable to different applications in production and laboratory thanks to a broad variety of configurations while having an excellent price-performance ratio.
| Measuring scales | Refractive Index (RI), Sucrose (%Brix), others on request |
| Measuring range | 1.32000 – 1.54000 RI / 100% Brix |
| Resolution | 0.00001 RI / 0.01% Brix |
| Precision | Measuring range 1.32 – 1.44: ± 0.00002 RI / ± 0.01% Brix *; Measuring range 1.44 – 1.54: ± 0.00003 RI / ± 0.01% Brix * |
| Reproducibility | ± 0.00001 RI / ± 0.01% Brix |
| Ambient temperature | + 10 °C to + 40 °C |
| Automatic temperature compensation | + 5 °C to + 50 °C |
| Temperature measurement | NTC sensor for measurement of sample temperature placed inside the prism |
| Technical control sample | No control |
| Measurement mode | Single measurement |
| Prism | Sapphire |
| Light source / wavelength | LED, interference filter 589 nm |
| Display | Back-lit LCD, 16 x 16 characters |
| Operation | 20 key membrane including function keys |
| Interfaces | 1 x RS232 C serial and parallel |
| Standard model | ATR-BR |
| Conformity | International Pharmacopoeia, ASTM, AOAC, DIN, FDA, ICUMSA and others |
VariRef
Our state-of-the-art refractometer delivers highest precision measurements throughout the entire product lifecycle. The VariRef allows multi-point calibration for the most complete measurement range, thus giving you the tools for a fast and economic maintenance at your side. With the VariPol’s rapid temperature control and adjustable sample compartment, both liquid and solid samples can be measured. All Vari instruments are connectable to web browsers, e.g. Google Chrome , on your favorable device, smartphone, tablet, or personal computer.
| Specifications | VariRef C | VariRef B | VariRef A |
| Measuring scales | Refractive Index (RI), Sucrose (% Brix), Standard scales included, freely definable scales | Refractive Index (RI), Sucrose (% Brix), USG | |
| Measuring range | 1.3200 – 1.5800 RI / 100% Brix | 1.29000 – 1.58000 RI / 100% Brix; 1.32000 – 1.70000 RI / 100% Brix | 1.320000 – 1.580000 RI / 100% Brix |
| Resolution | 0.0001 RI / 0.05% Brix | 0.00001 RI / 0.01% Brix | 0.000001 RI / 0.001% Brix |
| Precision | ± 0.0001 RI* / ± 0.05% Brix* | ± 0.00002 RI* / ± 0.02% Brix* | ± 0.00002 RI* / ± 0.02% Brix* |
| Repeatability | ± 0.0001 RI / ± 0.05% Brix | ± 0.00002 RI / ± 0.02% Brix | ± 0.000005 RI / ± 0.006% Brix |
| Ambient temperature | + 10 °C to + 40 °C | ||
| Temperature measurement | Pt 1000 sensor | ||
| Temperature range | 5 °C to 80 °C | 5°C to 100 °C | 20 °C (others upon request) |
| Temperature resolution | 0.01 °C | ||
| Temperature precision | ± 0.03 °C * | ||
| Measurement mode | Single sample or flow through measurement (with optional compartment door) | ||
| Prism | Sapphire | Sapphire / YAG | Sapphire |
| Light source / wavelength | LED, interference filter 589 nm | ||
| Display | Without user interface or with 7” Touchscreen user interface, 800 x 480 Pixel | ||
| Operation | Touchscreen**, Keyboard***, Mouse***, Barcode Reader***, Remote via PC/Tablet/Smartphone with Aquisys3 software*** | ||
| Interfaces | Ethernet 10/100/1000, RS232, SH connector, USB, WLAN**, Modbus**, Canbus**, Profibus** | ||
| Conformity | International Pharmacopoea, ASTM, AOAC, DIN, FDA, ICUMSA and others | ||
