User manual HANNA INSTRUMENTS HI 98181

[. . . ] Instruction Manual HI 98180 HI 98181 HI 98182 HI 98183 HI 98184 HI 98185 Calibration Check Waterproof pH/mV/ISE/Temperature Meters w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instruments. This manual will provide you with the necessary information for correct use of the instruments, as well as a precise idea of their versatility. [. . . ] The instruments will return to measurement mode and will memorize the calibration data. ERROR SCREENS Wrong standard The calibration cannot be confirmed. The message appears if mV input is out of ±2000 mV range. 29 Wrong slope The calibration cannot be confirmed. This message is displayed if slope is out of the accepted range. Slope under accepted value (30 % default slope). Slope over accepted value (130 % default slope). Wrong old slope An inconsistency between new and previous (old) calibration is detected. Clear old calibration parameters and proceed calibration from the current point. The instrument will keep all confirmed values during current calibration. The instrument will display "----" on the primary LCD if is not calibrated or after all calibrations are cleared. If "Clear" is pressed during the first calibration point, the instrument returns to measurement mode. Notes: ·Press T functional keys or MODE to select temperature value to be changed if the temperature probe is not connected. ·ISE range is not temperature compensated 30 GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV or ISE calibration is stored for the user to review when necessary. EXPIRED CALIBRATION The instrument is provided with a real time clock (RTC), in order to monitor the time elapsed since the last pH calibration. The real time clock is reset every time the instrument is calibrated and the "expired calibration" status is triggered when the instrument detects a calibration time out. The "CAL" "DUE" tags will start blinking to warn the user that the instrument should be recalibrated. The calibration time out can be set (see SETUP for details, page 33) from 1 to 7 days or can be disabled. For example, if a 4 days time out has been selected, the instrument will issue the alarm exactly 4 days after the last calibration. However, if at any moment the expiration value is changed (e. g. to 5 days), then the alarm will be immediately recalculated and appear 5 days after the last calibration. Notes: · When the instrument is not calibrated or calibration is cleared (default values loaded) there is no "expired calibration", and the display always shows the "CAL" "DUE" tags blinking. · When an abnormal condition in the RTC is detected, the instrument forces the "expired calibration" status. LAST pH CALIBRATION DATA The last pH calibration data is stored automatically after a successful calibration. To view the pH calibration data, press GLP when the instrument is in the pH measurement mode. The instrument will display a lot of data including calibration buffer, offset, slope, electrode condition. [. . . ] Use: general purpose. Consult the Hanna General Catalog for a complete and wide selection of electrodes. 69 EXTENSION CABLE FOR SCREW-TYPE ELECTRODES (SCREW TO BNC ADAPTER) HI 7855/1 Extension cable 1 m (3. 3') long HI 7855/3 Extension cable 3 m (9. 9') long OTHER ACCESSORIES HI 710042 HI 721317 HI 740157 HI 76405 HI 7662 HI 8427 Inductive Recharger Rugged carrying case Plastic electrode refilling pipet (20 pcs) Electrode holder Stainless steel Temperature probe with 1 m (3. 3') screened cable pH and ORP electrode simulator with 1 m (3. 3') coaxial cable ending in female BNC connectors HI 931001 pH and ORP electrode simulator with LCD and 1 m (3. 3') coaxial cable ending in female BNC connectors 70 RECOMMENDATIONS FOR USERS Before using these products, make sure they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to follow all necessary steps to correct interferences. The glass bulb at the end of the pH electrode is sensitive to electrostatic discharges. Avoid touching this glass bulb at all times. [. . . ]