User manual HANNA INSTRUMENTS C 221

[. . . ] The blinking "LOBAT" indicates that the battery voltage is getting low and the batteries need to be replaced. This indicates that the batteries are dead and must be replaced. The cuvet is not inserted correctly and an excess ambient light is reaching the detector. If the cap is properly installed, then contact your dealer or the nearest Hanna Customer Service Center. [. . . ] Color classes are expressed in millimeters (mm) Pfund grades, compared to an analytical grade Glycerol Standard Reference. Table 1 reports the USDA classification for honey samples and the related mm Pfund values. Table 2 shows the color of different monofloral honeys: data are obtained from a statistical set of honey samples. The table reports for each type of honey: average value of color, standard deviation, and the minimum and maximum values measured. REAR PANEL 1) Power Supply 12 VDC 2. 5 Watt 2) RS 232 Socket 3) Batteries Compartment ERROR MESSAGES a) on zero reading: This indicates that the zeroing procedure failed due to a low signal-to-noise ratio. The instrument cannot adjust the light level. Please check that the sample does not contain any debris. There is not enough light to perform a measurement. Please check the preparation of the Glycerol cuvet. There is too much light to perform a measurement. Please check the preparation of the Glycerol cuvet. b) on sample reading: Calibration was not performed. Follow the instruction described in the measurement procedure for calibrating the meter. A blinking "0" indicates that the sample absorbs less light than the Glycerol Reference. Check the procedure and recalibrate the instrument. 1) A flashing value of "150" (maximum measurable value) indicates an over range condition. The color intensity of the sample is beyond the programmed range. 2) A flashing value lower than the maximum measurable value (e. g. 120) indicates a low signal-to-noise ratio condition. In this case accuracy of the result is not guaranteed. Repeat the reading procedure. Tips for an Accurate Measurement The instructions listed below should be carefully followed during testing to ensure best accuracy. · Use matched square cuvets, having 4 clear faces and a 10 mm path length. · Whenever the cuvet is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lintfree cloth prior to insertion. [. . . ] · Place the Glycerol cuvet into the holder. Then put the light shield cap on. CE Declaration of Conformity ANALYSIS KIT C219 Kit Kit for Honey Color analysis, including 82 cuvets, 30 mL of Glycerol and two 5 mL syringe (75 tests average) Recommendations for Users Before using these products, make sure that they are entirely suitable for your specific application and for the environment in which they are used. Operation of these instruments may cause unacceptable interferences to other electronic equipments, this requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. [. . . ]