User manual HANNA INSTRUMENTS HI 4421

[. . . ] Instruction Manual HI 4421 DO/BOD/OUR/SOUR/Temperature Bench 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. [. . . ] To customise the logging data configuration: or to highlight the Logging Data · Use Configuration option. and then use or to enable · Press the parameter by selecting Yes or to disable it by selecting No for each option. · Press Sampling Period This option allows the user to select the desired sampling period for automatic logging. To set the sampling period: or to highlight the Sampling Period option. · Use and use or · Press desired option from 1, 2, 5, 10, 30 seconds. to select the to New Lot Accessing this option, the new manually logged readings will be put in a new log lot. · Use · Press · Press to generate a new manual lot. to confirm or press to escape without saving and return to the Log options. Note: The New Lot option is available only for manual logging. 27 Alarm This option allows the user to define two alarm limits for the measurements. Alarm State The following options are available: Disabled ­ the alarm will be disabled. Inside Limits ­ the alarm will notify the user when the measured value is inside the preset limits. Outside Limits ­ the alarm will notify the user when the measured value is outside the preset limits. To set the alarm state: · Use or to highlight the Alarm State option. or to highlight the to and use · Press desired option. · Press to confirm your selection or press cancel operation. Alarm Limits This option allows the user to set the alarm limits for the measured value. To set the alarm limits: · Highlight the Alarm Limits option and then press · Use then press or · Use alarm value. to increase / decrease the selected . to select the low / high alarm limit and to return to the Alarm options. 28 BOD SETUP The BOD Setup menu allows the user to set the parameters related to the resistivity measurements. Accessing BOD Setup · Press while in Measure mode and then select resistivity range. · Press · Use · Press and then or To access a BOD Setup option: to select the desired option. to to access BOD Setup menu. The following is a description of the Resistivity Setup option screens. Method Configuration This option allows the user to edit the BOD method configuration. To edit the options: · Highlight the Method Configuration option and then press . [. . . ] A thermistor temperature sensor provides temperature measurements of the sample. AND PULL To replace the membrane or refill with electrolyte, proceed as follows: fig. 1 Remove the protective cap by gently twisting, and pulling and pulling it off the body of the probe (see fig. Wet the sensor by soaking the bottom 2 cm (1'') of the probe in electrolyte for five minutes. [. . . ]