User manual HANNA INSTRUMENTS HI 88713

[. . . ] Instruction Manual HI 88713 ISO Turbidity Meter w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna Instruments product. This manual will provide you with the necessary information for correct use of the instrument. Please read this instruction manual carefully before using the instrument. [. . . ] Press the "Disable" functional key and then press ESC to return to the main screen. 16 17 · Wipe the cuvet thoroughly with a lint-free cloth to remove any fingerprints, dirt or water spots. · Apply silicone oil on the cuvet and wipe with a lint-free cloth to obtain an even film over the entire surface of the cuvet. Note: It is very important to oil the cuvet, especially for low turbidity values (< 1 FNU) to hide the glass imperfections which can influence the reading. · Place the cuvet into the instrument. Align the mark from the cuvet with the sign on the instrument top · Close the lid. Note: If you have a cuvet with indexing mark, place the cuvet into the instrument with the indexing mark aligned with the sign on the instrument top. · Press "Read" functional key and keep it pressed to take continuous readings. The display will show "READ" in the left side and blinking dashes. The dashes and light icon will appear during different measurement phases. The first value is displayed after 10 seconds and then a new reading is displayed each second as long as the "Read" functional key is kept pressed. When a new value is displayed, the measurement value will briefly blink. The last value remains on the display after the "Read" functional key is released. AVERAGED MEASUREMENT This measurement mode is useful when samples that cause unstable readings are analyzed. By averaging several readings, noise effect is reduced and accurate measurements can be taken. This mode can also be selected when high accuracy measurements are needed. In the average mode 10 measurements are averaged in a short period of time (about 20 seconds). To use the averaged reading mode first enter setup and enable the Average reading mode. The "AVG" text will be displayed in the left side of the screen. · Press "Read" functional key to take the measurement. The display will show "READ" in the left side and blinking dashes. The dashes and light icon will appear during different measurement phases. The first value is displayed after 10 seconds and then a new average of the available readings is displayed each second. When a new value is displayed, the measurement value will blink briefly. The last averaged value remains on the display at the end of the measurement. The HI 88713 Turbidity bench meter automatically selects the correct turbidity range to display the results with the highest accuracy. In FNU and NTU Non-Ratio Turbidity Modes, if the measured value is higher than 1000 FAU, the display will show the maximum value blinking and the message "Out of range" on the message line. [. . . ] Make sure that your instrument is switched off. Plug one connector to the instrument's USB socket and the other to the USB port of your PC. Please reffer to the HI 92000 software to download the data from the instrument. 30 Before using this product, make sure that it is entirely suitable for your specific application and for the environment in which it is used. [. . . ]