Hanna Instruments HI 9124 - Manuals

8 Submerge the ORP electrode 4cm (1½") into the sample to be tested and wait a few minutes for the reading to stabilize. Measurements within the ±699.9 mV range are displayed with 0.1mV resolution, while outside this range the resolution automaticallyswitches to 1 mV.For accurate ORP measurement...

9 It is recommended to calibrate the instrument frequently, especially ifhigh accuracy is required.The pH range should be recalibrated:• Whenever the pH electrode or temperature probe is replaced.• At least once a week.• After testing aggressive chemicals.• When extreme accuracy is required. PREPARA...

10 • The LCD will flash the "WAIT NOT READY" message. • Once the reading is stable, if it is not close to the selected buffer, "WRONG " and "WRONG " will blink alternatively; if it is close to the selected buffer the display will change to "READY" andblinking "CFM...

11 • If the reading is not close to the selected buffer, "WRONG " and "WRONG " will blink alternatively; • If the reading is close to the selected buffer and the reading is stable, the “READY” symbol is displayed and the “CFM” symbolstarts blinking on the LCD, asking for confirmation...

13 The instrument allows the user to configure several parametersthrough the Setup Menu.To enter the Menu mode, while in measurement mode, press andhold the SETUP key for about 5 seconds.Once the menu is entered, each parameter can be changed by usingthe arrow keys; then pressing the CFM key will co...