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.
TABLE OF CONTENTS 1 INTRODUCTION ......................................................................1 2 DISPLAY & KEYPAD FUNCTIONS......................................2 2.1 2.2 3 DISPLAY ................................................................................2 KEYPAD ................................................................................3 PREPARATION.........................................................................4 3.1 INSERTING & REMOVING RUBBER BOOT ....................
5.3 TAKING MEASUREMENTS ....................................................25 5.3.1 To take measurements: ...............................................25 5.4 TAKING PRESSURE/SALINITY COMPENSATED DO MEASUREMENTS .............................................................................26 5.4.1 Pressure Setting Adjustment.......................................26 5.4.2 Salinity Setting Adjustment.........................................29 6 HOLD FUNCTION..................................................
7.8.1 7.8.2 8 Pressure Setting Adjustment.......................................49 Salinity Setting Adjustment.........................................51 PROBE CARE AND MAINTENANCE.................................52 8.1 8.2 8.3 8.4 9 PROBE CARE .......................................................................53 PRE-MEMBRANED CAPS REPLACEMENT .............................53 TO REPLACE THE PROBE PRE-MEMBRANED CAP...................54 ELECTROLYTE SOLUTION .............................................
Instruction Manual 1 DO 6 INTRODUCTION Thank you for purchasing the DO 6 Dissolved Oxygen palm-top meter. This economy microprocessor-based palm-top meter has a large custom LCD (Liquid Crystal Display) for clear and easy reading. The DO 6 offers the measurement of dissolved oxygen in the percentage saturation mode and in the concentration mode. Temperature measurement is also available in degrees Celsius.
Instruction Manual 2 DO 6 DISPLAY & KEYPAD FUNCTIONS 2.1 Display The meter has a large custom LCD that consists of 14-segment 4 digit display and operation annunciators for Percentage Saturation measurement mode (%), Concentration measurement mode (mg/L or ppm) and Temperature measurement mode in degrees Celsius (T). Other annunciators include “A” (when the ATC function is activated), “CAL” (when meter is in calibration mode) and battery diagram for low battery condition. See Figure 1.
Instruction Manual 2.2 DO 6 Keypad The DO 6 meter has 6 keys on its splash-proof keypad; ON/OFF, HOLD/ENTER CAL, MODE, ▲ and ▼ keys. Some buttons have several functions depending on its mode of operation. ON OFF ON/OFF – Powers on and shuts off the meter. The meter will start in the measurement mode it was in when last switched off. CAL CAL – Activates the calibration mode for Percentage Saturation, Concentration and Temperature calibrations.
Instruction Manual 3 3.1 DO 6 PREPARATION Inserting & Removing Rubber Boot 1) To remove meter from rubber boot, push out from the bottom edges of meter until it is completely out of boot. Ensure that the cables of Dissolved Oxygen electrode or temperature probe are not connected. 2) To insert meter into rubber boot, slide in from the top of meter before pushing the bottom edges of meter down to set it into position. Lift up the stand at the back of meter for bench top applications if necessary.
Instruction Manual 3.2 DO 6 Inserting the Batteries The battery compartment is found at the back of instrument as shown in Figure 3. To open the battery compartment first remove protective rubber boot/stand then: 1) Push in the direction of arrow and lift up the cover. 2) Note the polarity of battery before inserting into position. 3) After replacement, place cover back and press down until it locks tight.
Instruction Manual 3.3 DO 6 Battery Replacement A low battery annunciator in the LCD alerts you when battery power is running low. See Figure 4. Replace with the same type as recommended by the manufacturer. % Figure 4: Low Battery Condition Caution: Power off the meter when changing battery.
Instruction Manual 3.4 DO 6 Dissolved Oxygen Probe Information The DO 6 palm top meter is supplied with a Dissolved Oxygen Probe that works on galvanic principle, that is, it does not require any polarising voltage from your meter. Rather it will generate a millivolt signal proportional to the amount of oxygen in the solution. Your DO Probe has a twin cable, one with a BNC connector for the DO measurement input, and the other with a phono jack plug for the temperature measurement input.
Instruction Manual DO 6 time. Always immerse the probe beyond the pre-membraned cap. The minimum water flow rate is 2 inch/second across membrane. The temperature range for use is within 0 to 50 °C. Always ensure that the probe’s membrane is protected against any scratches or dents. The whole pre-membraned cap has to be replaced if the membrane is damaged. It is also important to keep the membrane clean so as to produce an optimum and accurate measurement.
Instruction Manual 3.5 DO 6 Connecting the Probe to Meter 1) Insert the BNC connector from the electrode to the BNC connector socket on the meter accordingly and rotate connector clockwise until it locks. See Figure below. 2) To remove, simply rotate the connector in counter-clockwise direction until it unlocks, and slide the connector off the socket. 3) Plug the phono jack of temperature sensor into the phono socket of the meter as shown in Figure below.
Instruction Manual 3.6 DO 6 Switching the Meter On When switching the meter on, it will go through a series of display, eventually showing the revision number of the meter before going to the measurement mode. The mode of measurement which the meter displays will be similar to the last measurement mode to which the meter is switched off. ON OFF CAL 13 CAL 24 TAvg mg/l NTU ppm %pH Press ON/OFF key to power up your meter. 1) All LCD segments will light up for 1.5 seconds.
Instruction Manual 3.7 DO 6 Measurement Mode Selection:- Percentage Saturation (%), Concentration (mg/L)(ppm) and Temperature(T) By simply pressing the MODE key, you can select the measurement mode of percentage saturation measurement, concentration measurement or temperature measurement. The customized annunciator shall indicate the selection of the measurement mode.
Instruction Manual 4 4.1 DO 6 CALIBRATION Important Information on Meter Calibration Your meter has three measurement modes namely the DO % saturation measurement mode, the DO mg/L (ppm) concentration mode and the Temperature measurement mode. Since the mg/L (ppm) concentration value of dissolved oxygen varies with temperature, barometric pressure and salinity, the meter with its electrode has to be calibrated with consideration to these factors to ensure a proper measurement.
Instruction Manual DO 6 In the mg/L (ppm) concentration calibration mode, barometric pressure, salinity and temperature of the calibration sample needs to be set in the meter prior to calibration.
Instruction Manual DO 6 calibration failure for 0% Saturation slope calibration; the meter may have exceeded the limit of 10% of the factory calibrated absolute value. The sensor may have to be re- conditioned. Also, note that the DO 6 meter will not perform 0% or 100% Saturation calibration for absolute value ranging from 10.1% to 49.9%. The meter also will not perform the mg/L (ppm) Concentration calibration for an absolute value of less than 2.
Instruction Manual 4.3 DO 6 Temperature Calibration DO mg/L (ppm) Concentration measurement is dependent on the temperature of the sample to be measured. Most users will choose to have the DO6 automatically compensate for temperature using the temperature sensor that is built into the DO probe. However, it is possible to manually enter a known temperature to the meter (manual temperature compensation). The built-in temperature sensor of the DO6 probe is factory calibrated.
Instruction Manual DO 6 4) Press the ▲ and ▼ keys to adjust the meter reading to the correct temperature value (i.e. the temperature of the temperature bath) 5) Press the HOLD/ENTER key to confirm temperature calibration and return to measurement mode. NOTE: To exit from Temperature Calibration mode without confirming the calibration, press CAL instead of HOLD/ENTER. Temperature calibration is restricted to ± 5°C from the factory default temperature measurement displayed during calibration.
Instruction Manual 4.4 DO 6 Dissolved Oxygen Calibration in % Saturation You can calibrate this meter quickly and easily in air. The exact calibration value depends on barometric pressure. The meter is set to a factory default of 760 mm Hg, which results in a calibration value of 100% Saturation in air. A % CAL CAL NOTE: If the barometric pressure setting has been changed from 760 mm Hg, the calibration value in air will automatically adjust to a value other than 100%.
Instruction Manual DO 6 blink and the display will show a value which is with respect to the factory default calibration. NOTES: When calibration is attempted on a factory calibrated absolute value measurement of 10.1% to 49.9%, the display will show the absolute value measurement for 1.5 seconds before displaying Err.1 and goes to the measurement mode. 5) Press the HOLD/ENTER key to confirm the calibration. The meter displays “CO” for 1.5 seconds and automatically calibrates to 100.
Instruction Manual 4.4.2 DO 6 To calibrate 0% Saturation A 1) Rinse the probe well with DI water or rinse solution. 2) Press the MODE key to select the % Saturation mode, if necessary. 3) Dip the probe into the zero oxygen solution. Wait for the reading to stabilize. 4) Press the CAL key. The display will show the intended percentage calibration point (0%) with a CAL indicator at the top corner for 1.5 seconds.
Instruction Manual 4.5 DO 6 Dissolved Oxygen Calibration in mg/L or ppm concentration mode Calibrating the meter to 100% Saturation will also calibrate the concentration mode at the value in mg/L corresponding to 100% Saturation. This should produce acceptable results in most applications. A mg/l CAL CAL mg/l This meter also lets you make a calibration adjustment in mg/L (ppm) Concentration mode without affecting your % Saturation calibration.
Instruction Manual DO 6 the factory default calibration with a CAL indicator blinking at the corner of the display. 6) Press the ▲ and ▼ keys to adjust the reading to the known oxygen concentration of the sample. 7) Press the HOLD/ENTER key to confirm the calibration. The meter will display “CO” for 1.5 seconds and automatically calibrates to the value you have entered and returns to the measurement mode. NOTES: The concentration calibration window is +/- 40% of the factory default value.
Instruction Manual 5 DO 6 MEASUREMENT The DO 6 meter is capable of taking measurements with automatic or manual temperature compensation. 5.1 With Automatic Temperature Compensation (ATC) For Automatic temperature compensation, make sure the phono jack of the probe (see Figure 6 in Section 3.5) is securely inserted. The ATC annunciator “A” will be blinking if the ATC probe is disconnected. Activate the “A.ATC” mode in the set up menu, if necessary. See page 36.
Instruction Manual 5.2 DO 6 T Manual Temperature Compensation For manual temperature compensation, simply deactivate the “A.ATC” mode as explained in the set up menu on page 36. The automatic temperature compensation annunciator “A” will not be displayed to represent that the meter is in manual temperature compensation mode. To use manual temperature compensation, you need to enter the temperature value of your process into the meter. You can select any temperature between 0 and 50 °C.
Instruction Manual DO 6 value of the reference thermometer used. 5) Press the HOLD/ENTER key to confirm the manual temperature setting made. The “CO” indicator will appear for 1.5 seconds before the display returns to the measurement mode.
Instruction Manual 5.3 DO 6 Taking Measurements During measurement, care must be taken to ensure that the probe’s membrane surface does not touch anything. Stir around the solution to prevent any air bubbles from being trapped on the A membrane before taking a reading. IMPORTANT: Since the DO probe consumes oxygen from the sample, the sample must constantly flow past the membrane to achieve more accurate readings. You can use a stirrer to accomplish this. % MODE A 5.3.
Instruction Manual 5.4 DO 6 Taking Pressure/Salinity Compensated DO Measurements In taking pressure and salinity compensated DO measurements, the pressure and salinity values of your measurements need to be adjusted from the Set Up menu. The pressure setting adjustment feature is available when Set Up menu is derived from the % Saturation mode, mg/L (ppm) Concentration mode or Temperature mode.
Instruction Manual DO 6 7) Use the ▲ and ▼ keys to set the pressure value and press the HOLD/ENTER to confirm the setting. A confirmation indicator “CO” will be displayed for 1.5 seconds before the meter shows the next display of Salinity setting “b.SAL”. If the Set Up menu is derived from other than the mg/L (ppm) Concentration mode, the meter will return to the Set Up main group menu “DPr.7”. 8) Press CAL key to return to measurement mode, or continue to make a salinity setting adjustment.
Instruction Manual DO 6 HOLD ENTER HOLD ENTER HOLD ENTER HOLD ENTER HOLD ENTER “CO” will display for 1.5 seconds Display will continue to Salinity setting menu “b.SAL” if Set Up menu is entered from mg/l (ppm) mode. Otherwise display will return back to “DPr.7” “CO” will display for 1.5 seconds Display will continue to Salinity setting menu “b.SAL” if Set Up menu is entered from mg/l (ppm) mode. Otherwise display will return back to “DPr.
Instruction Manual 5.4.2 DO 6 Salinity Setting Adjustment NOTE: This mode is available only from the mg/L (ppm) Concentration Set Up menu. 1) Repeat steps 1 to 5 as in the steps of Pressure Setting Adjustment. 2) Press the HOLD/ENTER key twice till the meter displays the Salinity setting mode “b.SAL”. 3) Press the HOLD/ENTER key to enter the Salinity setting mode. 4) Use the ▲ and ▼ keys to enter the salinity of your solution in parts per thousand (ppt). Factory default is 0.0.
Instruction Manual 6 DO 6 HOLD FUNCTION This feature lets you freeze the display for a delayed observation. HOLD can be used in any measurement mode. 1) To hold a measurement, press the HOLD/ENTER key while in measurement mode. The %, mg/L, ppm or T annunciator in the display will start blinking to indicate that the measurement is being held. 2) To release the held value, press the HOLD/ENTER again. The annunciator will stop blinking to indicate that the held value has been released.
Instruction Manual 7 7.1 DO 6 ADVANCED SETUP FUNCTIONS Advanced Setup Overview The advanced setup mode lets you customize your meter’s preferences and defaults. There are two Set Up menus: - one which is derived from the % Saturation or Temperature mode and the other is derived from the mg/L (ppm) Concentration mode. 7.1.1 To enter the % Saturation or Temperature Set Up menu: 1) Make sure that the meter is switched-off while in the % Saturation or Temperature measurement mode.
Instruction Manual DO 6 SEt.P – Enter Set Up Menu 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.
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.
Instruction Manual MODE ON OFF DO 6 Switch off from % Saturation or Temperature measurement mode. Press and hold MODE key and then switch on. SEt.
Instruction Manual MODE ON OFF DO 6 Switch off from Concentration measurement mode. Press and hold MODE key and then switch on. SEt.
Instruction Manual 7.2 DO 6 (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 HOLD ENTER Selection of Automatic Temperature Compensation HOLD ENTER From “COF.
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.
Instruction Manual 7.2.2 DO 6 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”. 2) Use the ▲ and ▼ keys to select the desired mode of measurement. 3) Press the HOLD/ENTER key to confirm the selection made and to return to the subgroup menu. 4) Press the CAL key to return to the measurement mode.
Instruction Manual 7.3 DO 6 (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 HOLD ENTER Saturation CAL From the % Saturation or Temperature Set Up menu, 1) 2) Press the ▲ and ▼ keys to scroll through the main group to enter the viewing menu “CAL.2” for the latest calibration data.
Instruction Manual 7.4 DO 6 (ELE.3) Electrode Properties This menu features data of the electrode properties for diagnostic purposes. The “view only” parameters such as the electrode Slope Factor, % Saturation Offset setting, 100% Saturation mV value and 0% Saturation mV value are very useful in determining the life efficiency of the electrode. These electrode properties can be examined through its data in % Saturation and mg/L (ppm) Concentration which is available in their Set Up menu respectively. 7.
Instruction Manual 7.4.3 DO 6 Viewing the 100% Saturation mV value This parameter shows the sensor’s mV output corresponding to 100% Saturation. From Step 5 above, 6) 7.4.4 Press the HOLD/ENTER key. The display will show “HI.mV” momentarily before displaying the sensor’s mV output value with respect to 100% Saturation. Viewing the 0% Saturation mV value This parameter lets you view the sensor’s mV output corresponding to 0% Saturation. From Step 6 above, 7) Press the HOLD/ENTER key.
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. “OFS” displays for 1.5 seconds HOLD ENT ER % “HI.mV” displays for 1.5 seconds HOLD ENT ER HOLD ENT ER “LO.mV” displays for 1.
Instruction Manual 7.5 DO 6 (AtO.4) Automatic Off This feature is useful for batteries energy conservation. The meter automatically shuts off 20 minutes from the last key press. From any Set Up Menu, 1) Scroll the Set Up main group menu by using the ▲ and ▼ keys until the meter displays the Automatic Off menu “AtO.4”. 2) Press the HOLD/ENTER key to enter the menu. 3) Use the ▲ and ▼ keys to activate or deactivate the automatic off selection. a. HOLD ENTER YES – activates Automatic Off b.
Instruction Manual 7.6 DO 6 (rSt.5) Reset to Factory Default This mode lets you reset all parameters to factory default settings. There are two levels of reset: 1) 2) Calibration Reset: - Reset only the calibration values. This clears all previous calibrated values and reset to factory default. See Section 11 for factory default settings. HOLD ENTER User Reset: - Clears all data including calibration and other customized setup functions and reset it to factory default.
Instruction Manual DO 6 b. NO – deactivates Calibration Reset 5) Press HOLD/ENTER key to confirm the selection made. 6) If selection is ‘YES’, meter would immediately return to measurement mode. Otherwise it will return to the main group menu. Press CAL to return to the measurement mode. Note: When you reset your meter from % Saturation Set Up menu, both % Saturation and mg/L (ppm) Concentration calibrations are reset to factory default.
Instruction Manual 7.6.2 DO 6 User Reset This program clears all data including calibration and other customized setup functions and reset it to factory default. You can skip Calibration Reset and proceed straight to User Reset From “rSt.5” menu, HOLD ENTER 1) Press HOLD/ENTER key three times until meter displays the User Reset menu “b.USR” 2) Press HOLD/ENTER key to enter the menu. 3) Use the ▲ and ▼ keys to activate or deactivate the User Reset selection. User Reset a.
Instruction Manual 7.7 DO 6 (OFS.6) % Saturation Offset Adjustment This is a useful feature that allows you to offset meter’s value when cross referenced with another DO meter. That way, it can be standardized without you having to perform manual calculation. Your DO 6 meter allows % Saturation Offset adjustment within +/- 10.0% offset and its adjusted offset value can be viewed in the Electrode Properties menu “ELE.3”.
Instruction Manual DO 6 momentarily show the measured reading based on the last calibration before displaying the last offset adjusted value. 6) Use the ▲ and ▼ keys to enter the new value. 7) Press the HOLD/ENTER key to confirm the offset adjustment. “CO” will be displayed for 1.5 seconds before the display returns to the subgroup menu. 8) Press CAL key to exit the Set UP menu to return to the measurement mode. Note: When a user calibration is done, the offset gets reset to zero.
Instruction Manual 7.8 DO 6 (DPr.7) Dissolved Oxygen Parameters This Set Up menu allows you to set the barometric pressure and the salinity value of the sample to be measured. You are given the option to use mmHg or kilo Pascal barometric pressure units. The Salinity value to be entered will be based on ppt and is available in mg/L (ppm) Concentration Set Up menu. The Set Up menu for barometric pressure correction is “A.Hg” (for mmHg) and “A.
Instruction Manual DO 6 HOLD ENTER HOLD ENTER HOLD ENTER HOLD ENTER HOLD ENTER “CO” will display for 1.5 seconds Display will continue to Salinity setting menu “b.SAL” if Set Up menu is entered from mg/l (ppm) mode. Otherwise display will return back to “DPr.7” “CO” will display for 1.5 seconds Display will continue to Salinity setting menu “b.SAL” if Set Up menu is entered from mg/l (ppm) mode. Otherwise display will return back to “DPr.
Instruction Manual 7.8.2 DO 6 Salinity Setting Adjustment Note: This mode is available only from the mg/L (ppm) Concentration Set Up menu. 1) Repeat steps 1 to 5 as in the steps of Pressure Setting Adjustment. 2) Press the HOLD/ENTER key twice till the meter displays the Salinity setting mode “b.SAL”. 3) Press the HOLD/ENTER key to enter the Salinity setting mode. 4) Use the ▲ and ▼ keys to enter the salinity of your solution in ppt.
Instruction Manual 8 DO 6 PROBE CARE AND MAINTENANCE The DO6 probe is a galvanic measuring element which produces an output proportional to the oxygen present in the medium in which it is placed. The galvanic probe design lets you take measurements immediately – without the typical 15 minute wait of other dissolved oxygen probes. The probe consists of two parts: • An upper part consisting of the anode, a cathode, and the dual cable.
Instruction Manual 8.1 DO 6 Probe Care Proper care and maintenance will help you receive the maximum probe life and ensure more accurate readings. Since any deposits on the membrane surface act as a barrier to oxygen diffusing through the membrane, the membrane must be cleaned at regular intervals to assure maximum reliability. After using the probe, rinse the probe with clean water and wipe it with a soft cloth or paper to avoid any hardening of deposits if necessary.
Instruction Manual 8.3 DO 6 To replace the probe pre-membraned cap 1) Unscrew counter clockwise the pre-membraned cap from the probe sensing tip and discard. 2) Wash the probe under running water. 3) Take out the bottle of refill solution provided and assemble the needle tip on the tip of the plastic bottle. 4) Hold the probe upside down. Insert the needle into one of the 4 holes surrounding the silver cathode. Squeeze the bottle to inject fill solution into the probe body.
Instruction Manual 8.4 DO 6 Electrolyte Solution The electrolyte solution in your probe’s cap will deplete on usage and will need to be replaced periodically. Your DO probe comes with replacement electrolyte solution. The replacement electrolyte comes premixed and ready to use. To order more electrolyte solution, see “Accessories” section.
Instruction Manual 9 DO 6 TROUBLE-SHOOTING GUIDE Problem Cause Solution No display when turned on a) Batteries not in place a) b) Batteries not in correct polarity (+ and – position). Remove rubber boot/stand. Check that batteries are in place and making good contact. b) c) Weak batteries Re-insert batteries with correct polarity. c) Replace batteries. Unstable readings Slow response Not responding to key press a) Insufficient electrolyte in probe.
Instruction Manual 10 DO 6 ERROR MESSAGES LCD Display Indicates Cause Solution Low battery level. Need new batteries or battery connection is bad. Clean battery contacts. Replace batteries with fresh ones, noting polarity. “Err 1” in % Saturation Mode % Saturation Calibration error Calibration is performed when factory calibrated absolute value is out of calibration range – 10.1% to 49.9% Check the value of the calibration solution.
Instruction Manual 11 DO 6 FACTORY DEFAULT SETTINGS Setting Menu FUNCTION PARAMETER OPTING KEYS PARAMETER OPTIONS DEFAULT SETTING COF.1 Unit Configuration Parameter Title Only Parameter Title Only A.ATC Selection of Automatic or Manual Temperature Compensation ▲ and ▼ YES; NO YES b.DO Selection of mg/L or ppm of the concentration mode ▲ and ▼ mg/L or ppm mg/L CAL.2 Viewing the latest calibration data Viewing Only Viewing Only ____ ELE.
Instruction Manual Setting Menu DO 6 FUNCTION PARAMETER OPTING KEYS PARAMETER OPTIONS DPr.7 Barometric Pressure Selection Menu Parameter Title Only Parameter Title Only A.HG Selection of Barometric Pressure Setting Adjustment in mmHg ▲ and ▼ 500 to 1499 mmHg 760 mm Hg A.PA Selection of Barometric Pressure Setting Adjustment in Kilo Pascal ▲ and ▼ 66.6 to 199.9 kPA 101.3 kPA b.SAL Salinity Setting Adjustment ▲ and ▼ 0.0 to 50.0 ppt 0.
Instruction Manual 12 DO 6 SPECIFICATIONS % Saturation Mode Range Resolution Relative accuracy 0.00 – 200.0 % 0.1 % ± 1.5% of Full Scale mg/L (ppm) Concentration Mode Range Resolution Relative accuracy 0.00 – 20.00 mg/L or ppm 0.01 mg/L; 0.01 ppm ± 1.5% of Full Scale Temperature Range Resolution Relative accuracy -5.0 – 105.0 °C 0.1 °C ± 0.5 °C Salinity Correction Range Resolution Method 0.0 – 50.0 ppt 0.
Instruction Manual DO 6 % Saturation Calibration Limits Factory calibrated absolute value of 10.0% and below for 0% point & 50% to 200% for 100% point. Concentration Calibration Window +/- 40% from the factory default measurement value. Minimum reading allowed is 2.00 mg/L (ppm). Temperature Calibration Window +/- 5°C from factory default measurement Offset Adjustments (% Saturation) +/- 10.0 of reading in Saturation mode HOLD function Yes Auto-Off function Selectable Auto Off function.
Instruction Manual 13 DO 6 ACCESSORIES Eutech Instruments Oakton Instruments DO 6 meter and probe kit in hard carrying case ECDO601K “Ecoscan DO6” 35642-60 “Acorn DO6” DO 6 meter and probe ECDO601 “Ecoscan DO6” 35642-10 “Acorn DO6” Replacement galvanic DO probe with 10-mL electrolyte. 12-mm dia, 1 meter cable.
Instruction Manual 14 DO 6 ADDITIONAL INFORMATION 14.1 Dissolved Oxygen 14.1.1 General Information Dissolved Oxygen (DO) refers to the volume of oxygen that is contained in water. There are two main sources of DO in water: from atmosphere and photosynthesis. Waves and tumbling water mix air into the water where oxygen readily dissolves until saturation occurs. Oxygen is also produced by aquatic plants and algae as a by-product of photosynthesis.
Instruction Manual DO 6 The chart in Figure 32 shows the solubility of DO in mg/L in water at various temperatures.
Instruction Manual 14.1.2 DO 6 Measurement Units One measure of DO in water is parts per million (ppm) which is the number of oxygen molecules (O2) per million total molecules in a sample. Calculating the % Saturation is another way to analyze DO levels. % Saturation is the measured DO level divided by the greatest amount of oxygen that the water could hold under various temperature and atmospheric pressure conditions multiplied by 100. 14.1.
Instruction Manual 14.1.4 DO 6 Air Calibration Understanding the principle of air calibration is easy, once you know that it is partial pressure that the probe is responding to. When the probe is in air, it is measuring the partial pressure of oxygen in air. If water is air saturated, then the partial pressure of oxygen in the water will be the same as it is in air. Therefore, all you need to know is the temperature of the air in which the probe is placed.
Instruction Manual DO 6 In boiler water application, presence of oxygen in the water will increase corrosion and helps build up boiler scale that inhibits heat transfer. In such instance it is critical to keep DO concentration to a minimum. Some pollutants such as acid mine drainage produce direct chemical demands on oxygen in the water.
Instruction Manual 15 DO 6 WARRANTY This meter is supplied with a three-year warranty, six-month warranty for electrode against significant deviations in material and workmanship. If repair or adjustment is necessary and has not been the result of abuse or misuse within the designated period, please return – freight pre-paid – and correction will be made without charge. Eutech Instruments/ Oakton Instruments will determine if the product problem is due to deviations or customer misuse.
Instruction Manual 16 DO 6 RETURN OF ITEMS Authorization must be obtained from our Customer Service Department or authorized distributor before returning items for any reason. A “Return Goods Authorization” (RGA) form is available through our Authorized Distributor. Please include data regarding the reason the items are to be returned. For your protection, items must be carefully packed to prevent damage in shipment and insured against possible damage or loss.
For more information on Eutech Instruments/ Oakton Instruments’ products, contact your nearest distributor or visit our website listed below: Oakton Instruments Eutech Instruments Pte Ltd. P.O Box 5136, Blk 55, Ayer Rajah Crescent, Vernon Hills, IL 60061, USA #04-16/24 Singapore 139949 Tel: (1) 888-462-5866 Tel: (65) 6778 6876 Fax: (1) 847-247-2984 Fax: (65) 6773 0836 E-mail: info@4oakton.com E-mail: marketing@eutechinst.com Web-sites: Web-site: www.eutechinst.com www.4oakton.com www.
