User Manual ExStik® DO600 Dissolved Oxygen Meter II RECALL Dissolved Oxygen DO600 Additional User Manual Translations available at www.extech.
Introduction Congratulations on your purchase of the ExStik® DO600 dissolved oxygen / temperature meter which simultaneously displays dissolved oxygen and temperature. Units of measure are % saturation, mg/l or ppm for dissolved oxygen, and °C or °F for temperature. Advanced features include Data Hold, 25‐point memory, auto power off, automatic temperature compensation, salinity and altitude compensation.
Operation Prepare the Electrode The electrode is shipped “dry” and requires filling with the supplied electrolyte solution before use. The membrane should be in place and does not need replacement. Follow the procedure at the end of this guide for filling the bonded cap. NOTE: Make sure that there are no air bubbles in the electrode before use. Powering the ExStik® The ExStik® uses four (4) CR2032 Lithium Ion Batteries. Press the ON/OFF button to turn the meter on or off.
Calibration 1. 2. 3. 4. 5. 6. 7. Calibration should be performed on a daily basis. Turn the meter ON Press and hold the MODE/HOLD button until % is displayed on the LCD. If the meter has not been used for seven (7) days or longer, allow the electrode to fully polarize. This may take 2‐3 minutes. Place the electrode cap onto the electrode. The sponge contained in the cap should be only moistened (not soaked) with (distilled water) or clean tap water.
Measurements 1. 2. 3. 4. 5. Cover the electrode with the electrode cap. The sponge contained in the cap should be moistened (not soaked) with (distilled water) or clean tap water. Pressing the ON/OFF button turns the meter ON or OFF. When turned ON, the meter’s display switches on and the Self Calibration utility runs (see above). If this is the first time the meter is powered up, wait approx.
Altitude Compensation 1. 2. 3. 4. With the unit ON, momentarily press the CAL/RECALL button twice in quick succession (‘SAL’ is shown in the lower temperature display. Press and hold CAL/RECALL again for 2 seconds to enter the Altitude Mode (‘Ald’ will be shown in the lower temperature display). The factory default value is sea level. Each press of the MODE/HOLD button increases the compensation by 1000ft. The maximum value is 20 presses (20,000ft above sea level).
Clearing Stored Readings 1. 2. With the unit ON press and hold the ON/OFF button for 4 seconds When “clr” is shown in the main display the memory is cleared. Measurement and Display Considerations The DO600 uses a polarographic sensor, which consumes oxygen at the sensing surface. This requires a constant movement of the sample across the membrane to maintain a constant dissolved oxygen level.
Maintenance Battery Replacement 1. Twist off the battery compartment cover. 2. Holding the battery housing in place with a finger, pull out the battery carrier using the two small tabs. 3. Replace the four (4) CR2032 batteries observing proper polarity. 4. Replace the battery carrier, reattach the battery compartment cap and tighten securely. Never dispose of used batteries or rechargeable batteries in household waste.
DO Bonded Membrane Cap replacement Important Note : Do not touch the membrane as skin oils will interfere with the oxygen permeability rate of the membrane. Use caution when replacing the bonded cap. 1. It is recommended that the electrode remain attached to the meter during this replacement process. 2. To remove the bonded cap from the electrode, unscrew the cap firmly and carefully counter‐clockwise from the electrode (see diagram below). 3. Discard the used cap.
Specifications Display 2000 count, Dual function 3 ½ digit LCD with Bargraph, Display size: 24 mm x 20 mm Sensor Polarographic type Membrane Bonded membrane cap with threaded fitting Operating Temp.
Appendices Troubleshooting Guide Symptom Unit will not power on Possible Causes ‐Batteries not in place ‐Dead batteries ‐Battery polarity incorrect “BAT” indicator shown on display Unstable Readings ‐Batteries are weak Readings drift down Slow Response Electrode cannot be calibrated Electrode cannot be calibrated after replacing the electrolyte and membrane cap Sample reading is frozen ‐Insufficient electrolyte in probe (Air bubbles present when probe is inverted.
Operational Matrix for the Model DO600 Function / Resulting Action On/Off Water Saturated Air Calibration Zero Calibration Store Reading Power Status Mode Setting Any On Any Any On Any Place Electrode in Zero Solution, wait for stability Press & hold CAL/RECALL button for 2 seconds Also works with probe removed (Cal at zero current) On Any Momentary press of the MODE/HOLD button Stores and holds reading “HOLD” displayed On While In Hold Mode Momentary press of the MODE/HOLD button On Any
Re‐order and Accessories Information Part Number Description DO600 ExStik II Dissolved Oxygen Meter DO600‐K ExStik II Dissolved Oxygen Meter Kit – contains DO600, DO603, EX050 cable, and weight, and CA895 case DO605 Replacement Probe, ExStik II Dissolved Oxygen Meter DO603 Membrane Kit for DO600 Contains: 6 Membrane Caps, 15 mL KCL Filling Solution, Polishing Paper EX010 Extension Cable 3 feet (1 Meter) & Probe Weight EX050 Extension Cable 16 feet (5 Meter) & Probe Weight DO610 ExStik II DO/p
