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hp stands for high precision
high precision means not only a high resolution of 0.001° optical
rotation. it also means a very good linearity of <0.003° over the entire range of measurement. thus, the gyromai-hp guarantees excellent absolute accuracy. displayed results are averages of
multiple measurements. the sampling rate is 8/s and by se-lecting a proper integration time within the range of 1-99 s,even samples of lowest light transmittance down to 0.1 % （od 3） can be measured accuray. moreover, microbore cells for sample volumes of less than 1 ml can be used without problems.

versatile and easy to operate
a well designed water-proof keyboard and a 40-column alphanumeric
display are provided for communication between operator and instrument. all instrument functions are displayed as easily
understandable menu items:
- range se-lection.
- se-lection of light source, wavelength （multiple light source/
wavelength models only）.
- parameter input, such as cell length, specific rotation or standard
concentration.
- integration time se-lection to define the number of measurements
averaged.
- sample identification mode se-lection, either for individually
entered or automatically advanced sample numbers.
- setting of calendar date and time. 

   高精度數字式旋光儀技術指標
 

seven measuring ranges
optical rotation
specific rotation
concentration...
-by measuring optical rotation,while specific rotation and cell態萬方length are entered manually.
-after calibration by a standard.
-sucrose
-glucose
-°z international sugar scale,icumsa 1988.

a choice of light sources and wavelengths
eight models of gyromat-hp are offered to meet individual requirements ranging from a budget priced single light source
single wavelength polarimeter up to the most versatile model with
three lamps （sodium, mercury,tungsten-halogen） and six wavelengths.

digital display of temperature
the optical rotation of all substances is influenced by temperature.
sample cells with builtin pt-100 platinum resistance thermometer
permit sample temperature measurements to 0.1 °c accuracy.

two data output ports
a centronics type parallel printer interface port allows data recording by any low cost standard printer. the second data output
port is an rs-232c serial interface for communication with a computer.data transmitted to printer or computer are sample identification number, measured value,sample temperature （optional）,
date and time of measurement,and measuring range label.