User manual EUTECH INSTRUMENTS WATERPROOF ORPTESTR 10 ORPREDOX

[. . . ] This Instruction Manual is also available for download on our Web-site: eutechinst. com or 4oakton. com 5. Immediately press and hold the HOLD/ENT button to scroll the reading to match value of the known solution sample. The offset adjustment is up to +/- 150mV from the default measurement. [. . . ] While pressing the `Cal' button, press and release the ON/OFF button to enter the `User Reset' selection menu. The screen will display `rSt' on the bottom display with a flashing `nO' selection. Use the `CAL' button to toggle between `nO' and `YES' selection. · nO deactivates reset selection · YES activates the reset selection 4. Press the HOLD/ENT button to confirm the selection made. Figure 1: Calibration or Offset Adjustment Sequence Before you begin: To condition electrode, immerse electrode in electrode storage solution or tap water for at least 30 minutes before use. Remove cap from the electrode and press the ON/OFF button to switch the tester on. If you do not press a button for 8. 5 minutes, the tester will automatically shut off to conserve batteries. Note: For ORPTestr10BNC, please refer to the ORP electrode's instruction manual. Calibration Calibration is not necessary unless exact readout agreement with a work standard and at a specific ORP value is needed. Select a known solution sample from the actual process as near the critical ORP value as possible, for example, 255 mV. Dip the conditioned electrode into this solution for 2 to 5 minutes until the readings stabilize. The screen will switch to a dual display with the upper display flashing the relative mV value to be calibrated and the lower display showing the default measurement value of the sample. The `CAL' indicator will also be shown on the screen replacing `MEAS' to indicate that the tester is in calibration mode. Switching on ORP Testr 10 With meter powered off, press CAL and ON/OFF at the same time. First release ON/OFF button, then CAL button. Figure 4: User Reset Sequence After reset, whole LCD segment lits up and goes back to measurement mode. Ready to take measurement Note: To abor t calibration, press the `CAL' button to return to the measurement mode. Figure 2: Power Up Sequence Electrode Maintenance 1. Rinse the electrode with tap water or electrode storage solution after each measurement. In aggressive chemicals, dir ty or viscous solutions, and solutions with heavy metals or proteins, take readings quickly and rinse electrode immediately afterward. If possible, keep a small piece of paper or sponge in the electrode cap ­ moistened with clean water or electrode storage solution (NOT de-ionized water) ­ and close the cap over the electrode. Electrode Replacement You can replace the electrode module at the fraction of the cost of a new tester. When the tester fails to calibrate or gives fluctuating readings in calibration standards, you need to change the electrode. [. . . ] (165 x 38 mm) Boxed: 220 x 60 x 50 mm Weight 3. 25 oz (90 gm) Range Self-Diagnostic Messages 3 Bars indicates Battery is full (100%) Insert Electrode Module Electrode Module Large O-ring Resolution Accuracy Calibration Window Auto Off User Reset Non Volatile Memory Backup Low battery indicator 2 Bars indicates 50% of the battery life is left 1 Bar indicates 25% of the battery life is left Blinking battery casing indicates the need to replace batteries with fresh ones as specified by manufacturer Small O-ring Small Tab Large Tab Over range / Under range signal Or / Ur Electrode is not in contact with solution or electrode is failing Replacement sensor is not connected properly to the tester during sensor replacement LCD Display Power Requirement Battery Life Operating Temperature Error Message r. 0 mV calibration error while attempting to calibrate tester to a value which is out of range 4. Push the collar over the module and thread it into place by firmly twisting clockwise. Tester Dimension Note: It is necessary that you recalibrate your tester prior to measurement after an electrode replacement. 68X068043 01/04 Rev 0 [. . . ]