User manual EUTECH INSTRUMENTS DO 6PLUS DISSOLVED OXYGEN TEMP

[. . . ] Instruction Manual DO 6+ Dissolved Oxygen/Temp 68X243634 Rev 0 Mar 09 Technology Made Easy . . . Part of Thermo Fisher Scientific Instruction Manual DO 6+ Instruction Manual DO 6+ Preface This manual serves to explain the use of the DO 6+ hand held meter. This manual functions in two ways: first as a step by step guide to help you operate the meter; second, as a handy reference guide. This manual is written to cover as many anticipated applications of the DO 6+ meter as possible. If there are doubts in the use of this meter, please do not hesitate to contact the nearest Eutech Instruments Authorized Distributor. [. . . ] 1) 2) 3) From "COF. 1" of either setup menu, press HOLD/ENTER to display "A. ATC". Press HOLD/ENTER to enter the selection menu. Use to select YES (activate ATC) or NO (deactivate ATC and activate manual temperature compensation). Press CAL to return to measurement mode. HOLD ENTER HOLD ENTER 4) 5) Selection of Automatic or Manual Temperature Compensation - 21 - Instruction Manual DO 6+ 5. 3 1) Selection of mg/L or ppm (b. DO) From "COF. 1" of the mg/L (ppm) setup menu, press HOLD/ENTER three times to display "b. DO". Use to select the desired units of measurement. Press CAL to return to measurement mode. ppm mg/l 2) 3) 4) 5. 4 Calibration Data (CAL. 2) To view the % saturation or mg/L (ppm) concentration calibration data, proceed from the corresponding setup menu. 1) 2) 3) 4) From the setup menu, press to select "CAL. 2" for the most recent calibration data. Press HOLD/ENTER to view calibration data. Press CAL to return to measurement mode. % Display will show the latest % saturation calibration if set up menu is selected from the DO % Saturation Mode HOLD ENTER CAL Note: " -- -- -- -- " indicates no calibration data exists for the selected mode. CAL mg/l Display will show the latest mg/l or ppm calibration if set up menu is selected from the DO mg/l (ppm) Concentration Mode - 22 - Instruction Manual DO 6+ 5. 5 Electrode Data (ELE. 3) Use this menu to view electrode data for diagnostic purposes. Data includes; slope factor (FACT), % saturation offset (OFS), 100% saturation mV value (HI. mV), and 0% saturation mV value (LO. mV). To view electrode data for % saturation or mg/L (ppm) modes, enter from the corresponding setup menu. The electrode slope factor gives an indication of the probe's efficiency. It is the ratio of the actual mV produced by the probe to the theoretical mV value. The % saturation offset allows you to view the electrode offset adjustment made in Section 5. 8 -- % Saturation Offset Adjustment. 1) 2) 3) From the setup menu, press to select "ELE. 3". "FACT" is momentarily shown before displaying the slope factor. "OFS" is momentarily shown before displaying % saturation offset. Note: this is not available from the mg/L (ppm) concentration setup menu. "HI. mV" is momentarily shown before displaying the electrodes mV output at 100%. "LO. mV" is momentarily shown before displaying the electrodes mV output at 0%. 4) 5) Press CAL to exit the setup mode and return to measurement mode at any time. - 23 - Instruction Manual DO 6+ HOLD ENT ER "FACT" displays for 1. 5 seconds Viewing of the offset percentage adjustment will be available only if set up menu is selected from the DO % Saturation or the Temperature Mode. Otherwise, this menu will be skipped. HOLD ENT ER "OFS" displays for 1. 5 seconds % "HI. mV" displays for 1. 5 seconds HOLD ENT ER HOLD ENT ER "LO. mV" displays for 1. 5 seconds 5. 6 Automatic Shut Off (AtO. 4) Use this feature to conserve batteries. When active, the meter will automatically shut off 20 minutes after the last key press. [. . . ] Fish growth and activity usually require 5 to 6 ppm of DO, an important consideration for Aqua-culture industry. Low DO indicates a demand on the oxygen of the system. Natural organic material such as leaves accumulate in the stream and create an oxygen demand as it is decomposed. Organic materials from human activities also create an oxygen demand in the system. [. . . ]