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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 accurately. 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.    �߾�������ʽ�����Ǽ���ָ��

seven measuring ranges optical rotation specific rotation concentration... -by measuring optical rotation,while specific rotation and cell̬��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.