User manual EUTECH INSTRUMENTS ECOSCAN DO 6 DO METER

[. . . ] Instruction Manual DO 6 Economy Hand-held Dissolved Oxygen Meter 68X243622 Rev 0 01/04 Technology Made Easy . . . Preface This manual serves to explain the use of the Dissolved Oxygen palm-top meter DO 6. This manual functions in two ways: first as a step by step guide to help you operate the meter; second, it serves as a handy reference guide. This manual is written to cover as many anticipated applications of the DO6 palm-top meter as possible. If there are doubts in the use of the Dissolved Oxygen palm-top meters, please do not hesitate to contact the nearest Eutech Instruments / Oakton Instruments authorized Distributor. [. . . ] "SEt. P" indicator will appear momentarily and "COF. 1" will appear next. You are now in the % Saturation or Temperature Set Up menu. To enter the mg/L (ppm) Concentration Set Up menu: Switch off the meter in the mg/L (ppm) Concentration measurement mode. Repeat steps 2 to 3 as above and you will be in the mg/L (ppm) Concentration Set Up menu. The following table combines the explanation for the features available in both Set Up menus. Figures 19 and 20 give an overall view of the Set Up sequence for the % Saturation or Temperature Set Up menu and the mg/L (ppm) Concentration Set Up menu. 31 Instruction Manual SEt. P ­ Enter Set Up Menu DO 6 COF. 1 ­ Enter Configuration Menu A. ATC ­ Selection for automatic temperature compensation. b. DO ­ Selection of mg/L or ppm of the concentration mode measurement. (Only available in Concentration Set Up menu) CAL. 2 ­ Viewing the latest Calibration data `View only' parameter for the latest calibration data of the DO % Saturation calibration and the DO mg/L (ppm) Concentration calibration. Calibration data will be viewed according to its respective Set Up menu. ELE. 3 ­ Viewing the Electrode properties FACT ­ Viewing the Slope Factor OFS ­ Viewing the % Saturation offset adjustment. (Only available in % Saturation Set Up menu) HI. mV ­ Viewing the mV value for 100% Saturation LO. mV ­ Viewing the mV value for 0% Saturation AtO. 4 ­ Selection of automatic power off (20 minutes from the last key press) rSt. 5 ­ Enter Reset Menu A. CAL ­ Selection of Calibration Reset (Clear only Calibration and its Data back to factory default condition) b. USR ­ Selection of User Reset (Clear all user setting back to factory default condition) 32 Instruction Manual DO 6 OFS. 6 - % Saturation Offset Adjustment (Only available in % Saturation Set Up menu) DPr. 7 ­ Enter Barometric Pressure Selection Menu A. HG ­ Selection of Barometric Pressure Setting Adjustment in mmHg A. PA - Selection of Barometric Pressure Setting Adjustment in Kilo Pascal b. SAL ­ Enter the Salinity Setting Adjustment Menu (Only available in mg/L (ppm) Concentration Set Up menu) 33 Instruction Manual Switch off from % Saturation or Temperature measurement mode. Press and hold MODE key and then switch on. DO 6 MODE ON OFF SEt. P will display for 1 second Figure 19: Overview of DO 6 % Saturation or Temperature Setup Menu 34 Instruction Manual DO 6 MODE ON OFF Switch off from Concentration measurement mode. Press and hold MODE key and then switch on. SEt. P will display for 1 second Figure 20: Overview of DO6 Concentration Set up Menu 35 Instruction Manual DO 6 7. 2 (COF. 1) Configuration Menu In this menu, the meter lets you configure the selection of automatic temperature compensation (A) and the selection of mg/L or ppm mode for the mg/L (ppm) Concentration measurement mode. (Second feature is only available in mg/L (ppm) Concentration Set Up menu) 7. 2. 1 Selection of Automatic Temperature Compensation HOLD ENTER From "COF. 1" of any Set Up menu, 1) Press the HOLD/ENTER key for the display to show the Automatic Temperature Compensation selection menu "A. ATC". Press the HOLD/ENTER key to enter the ATC selection menu. Use the and keys to either activate or deactivate the ATC feature. NO ­ deactivates the ATC and activates the Manual temperature compensation 4) Press the HOLD/ENTER key to confirm your selection. HOLD ENTER 2) 3) Figure 21: Selection of Automatic or Manual Temperature Compensation 36 Instruction Manual DO 6 Note: The meter will either return to the main group menu "COF. 1" if % Saturation or Temperature Set Up menu is used or will continue to the mg/L or ppm mode configuration if mg/L (ppm) Concentration Set Up menu is used. 37 Instruction Manual DO 6 7. 2. 2 Selection of mg/L or ppm mode From the "COF. 1" of the mg/L (ppm) Concentration Set Up menu, 1) Press the HOLD/ENTER key thrice to enter the mg/L or (ppm) mode selection menu "b. DO". Use the and keys to select the desired mode of measurement. Press the HOLD/ENTER key to confirm the selection made and to return to the subgroup menu. Press the CAL key to return to the measurement mode. mg/l 2) 3) ppm 4) Figure 22: Selection of mg/L or ppm mode 38 Instruction Manual DO 6 7. 3 (CAL. 2) Calibration Data You can view the latest calibration data for the % Saturation and the mg/L (ppm) Concentration calibrations. The calibration data from each mode can be viewed in the Set Up menu respectively. 7. 3. 1 Viewing the % calibration data Saturation HOLD ENTER CAL From the % Saturation or Temperature Set Up menu, 1) Press the and keys to scroll through the main group to enter the viewing menu "CAL. 2" for the latest calibration data. Press HOLD/ENTER key to view the latest % Saturation calibration data. [. . . ] 14. 1. 5 Applications Oxygen is essential for fish, invertebrate, plant, and aerobic bacteria respiration. DO levels below 3 ppm are stressful to most aquatic organisms. Levels below 2 or 1 ppm will not support fish. Fish growth and activity usually require 5 to 6 ppm of DO, an important consideration for Aqua-culture industry. [. . . ]