User manual HANNA INSTRUMENTS HI 96711

[. . . ] Instruction Manual HI 96711 Free & Total Chlorine Fast Tracker Ion Specific 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 meter. Please read this instruction manual carefully before using the instrument. [. . . ] A confirmation of the factory calibration is selected. This indicates that the user calibration was deleted. "Error": the concentration of the used calibration solution is not correct. Repeat the calibration procedure with the right standard solution, and verify it is not expired. If the calibration procedure fails again, contact your dealer or the nearest Hanna Customer Service Center. LOGGING MODE MESSAGES The blinking "READ TAG" indicates that the meter asks to read the tag for identification of the sampling location. Note: If the tag is not read within 20 seconds, the logging procedure is canceled. LOG RECALL MODE MESSAGES This prompt appears when entering recall data. The blinking "DEL" indicates that the last record will be deleted if the /DEL key is pressed. The blinking "DEL" indicates that all records will be deleted if the /DEL key is pressed. ERROR MESSAGES a) on zero reading: "Light high": there is too much light to perform a measurement. "Light low": there is not enough light to perform a measurement. b) on sample reading: There is too much light for the sample measurement. Follow the instruction in the measurement procedure for zeroing the instrument. Check the procedure and make sure you use the same cuvet for reference (zero) and measurement. A flashing value of the maximum concentration indicates an over range condition. The concentration of the sample is beyond the programmed range: dilute the sample and measure again. 13 GENERAL TIPS FOR AN ACCURATE MEASUREMENT The instructions listed below should be carefully followed during testing, to ensure best accuracy. · For filling correctly the cuvet: the liquid in the cuvet forms a convexity on the top; the bottom of this convexity must be at the same level of the 10 mL mark. · Proper use of the powder reagent packet: (a) use scissors to open the powder packet; (b) push the edges of the packet to form a spout; (c) pour out the content of the packet. · It is important that the sample does not contain any debris. · Each time the cuvet is used, the cap must be tightened to the same degree. · 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 the supplied tissue (HI 731318) or a lint-free cloth prior to insertion. [. . . ] 23 RECALL DATA The log records are organized in chronological order. · Use the UP or DOWN keys to scroll the log memory, record by record. Each record contains several panels: i) Record number and parameter number. iii) The hexadecimal string of the tag for the identification of the sampling location. [. . . ]