EUTECH INSTRUMENTS WATERPROOF CYBERSCAN DO 300 DISSOLVED OXYGEN METER Instruction Manual
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EUTECH INSTRUMENTS WATERPROOF CYBERSCAN DO 300 DISSOLVED OXYGEN METER Instruction Manual

Waterproof hand-held dissolved oxygen / temperature meter
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Instruction Manual
DO 300
Waterproof Hand-held Dissolved Oxygen / Temperature Meter
68X248909
Technology Made Easy ...
Rev 3 02/04

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Summary of Contents for EUTECH INSTRUMENTS WATERPROOF CYBERSCAN DO 300 DISSOLVED OXYGEN METER

  • Page 1 Instruction Manual DO 300 Waterproof Hand-held Dissolved Oxygen / Temperature Meter 68X248909 Technology Made Easy ... Rev 3 02/04...
  • Page 2 The information presented in this manual is subjected to change without notice as improvements are made, and does not represent a commitment on the part of Eutech Instruments Pte Ltd/ Oakton Instruments.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION DISPLAY AND KEYPAD FUNCTIONS Display Keypad PREPARATION Inserting the Batteries Connecting the Probe CALIBRATION Preparing the meter for calibration Temperature Calibration Dissolved Oxygen Calibration in % Saturation Dissolved Oxygen Calibration in mg/L (ppm) mode MEASUREMENT Taking DO readings Taking Pressure/Salinity Compensated DO measurements HOLD FUNCTION MEMORY FUNCTIONS...

  • Page 4: Introduction

    Instruction Manual DO 300 INTRODUCTION Thank you for selecting the DO 300 waterproof portable meter. This meter is a microprocessor-based instrument that is designed to be handy and capable of allowing one- hand operation. It is capable of measuring Dissolved Oxygen in mg/L or ppm, % Saturation of Oxygen and Temperature.

  • Page 5: Display And Keypad Functions

    Instruction Manual DO 300 DISPLAY AND KEYPAD FUNCTIONS Display The LCD has a primary and secondary display. The primary display shows the measured DO value either in mg/L, ppm or %, depending on units of measurement selected. The secondary display shows the measured temperature in °C. The display also shows error messages, keypad functions and program functions.

  • Page 6: Keypad

    Instruction Manual DO 300 Keypad The large membrane keypad makes the instrument easy to use. Each button, when pressed, has a corresponding graphic indicator on the LCD. See Figure 1. Some buttons have several functions depending on its mode of operation. Function ON/OFF Powers meter on and off.

  • Page 7: Preparation

    Instruction Manual DO 300 PREPARATION Inserting the Batteries Four AAA batteries are included with your meter. Use a Philips screwdriver to remove the two screws holding the battery cover. See Figure 3 below. Remove battery cover to expose batteries. Insert batteries. Follow the diagram inside the cover for correct polarity. Replace the battery cover into its original position and secure into place using the two screws removed earlier.

  • Page 8: Connecting The Probe

    Instruction Manual DO 300 Connecting the Probe Your meter uses a dissolved oxygen/temperature probe. The probe cable has a notched 6-pin connector to attach the probe to the meter. NOTE: Do not substitute other probes. For a replacement probe, see the “Accessories” section, page 47- 48.

  • Page 9: Calibration

    Instruction Manual DO 300 CALIBRATION Preparing the meter for calibration The amount of oxygen dissolved in water will depend on its temperature, atmospheric pressure and its salinity. While the pressure and salinity values are manually entered into the instrument, the temperature is being measured by the probe. It is therefore very important that the temperature is calibrated if necessary prior to the DO calibration.

  • Page 10: Temperature Calibration

    Instruction Manual DO 300 Temperature Calibration DO in mg/L is dependent on temperature, so it is first necessary to verify the temperature reading. Temperature calibration is accessible from the mg/L or ppm measurement mode. The built-in temperature sensor in the probe is factory calibrated. Calibrate your sensor only if you suspect temperature errors may have occurred over a long period of time or if you have a replacement probe.

  • Page 11: Dissolved Oxygen Calibration In % Saturation

    Instruction Manual DO 300 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.
  • Page 12 Instruction Manual DO 300 To calibrate 0% Saturation: Rinse the probe well with DI rinse water. For best MEAS accuracy, wipe the end of the probe dry. Do not touch the READY membrane. 2 3 . 4 °C Press the MODE key to select the % saturation mode. Place the probe in zero oxygen solution.

  • Page 13: Dissolved Oxygen Calibration In Mg/L (Ppm) Mode

    Instruction Manual DO 300 Dissolved Oxygen Calibration in mg/L (ppm) mode Calibrating the meter to 100% in saturation mode will also calibrate the mg/L mode at the value in mg/L corresponding to 100% saturation. This should produce acceptable results in most applications.

  • Page 14: Measurement

    Instruction Manual DO 300 MEASUREMENT Taking DO readings During measurement, the probe can be: Fully immersed in the solution Partially immersed in the solution Do not allow the probe’s membrane surface to touch anything! It is always advisable to insert the probe guard (refer to Figure 34 and 35 on pages 38 and 39) IMPORTANT: Since the DO probe consumes oxygen from the sample, the sample must constantly flow past the membrane...
  • Page 15 Instruction Manual DO 300 NOTE: To select between mg/L and ppm units, see Section 8.7.2 on page 30. The ATC indicator should appear in the lower right hand corner of the display. If it does not, this indicates an error. Taking measurements with READY ON indicator selected on If the READY indicator has been activated, the READY annunciator lights when the reading is stable.

  • Page 16: Taking Pressure/Salinity Compensated Do Measurements

    Instruction Manual DO 300 Taking Pressure/Salinity Compensated DO measurements If necessary, you can adjust the pressure and salinity values of your measurements in the SETUP mode. The DO meter will automatically compensate for salinity and pressure based on the values entered in the SETUP functions. The meter is factory set at 760 mm Hg (101.3 kilo Pascals) pressure adjustment and a factor of 0.0 ppt salinity adjustment.

  • Page 17: Hold Function

    Instruction Manual DO 300 HOLD FUNCTION This feature lets you freeze the dissolved oxygen and temperature readings for a delayed observation. HOLD can be used any time when in MEAS mode. To hold a measurement, press the HOLD key while in measurement mode.

  • Page 18: Memory Functions

    Instruction Manual DO 300 MEMORY FUNCTIONS Memory Input Your meter stores data in sets that include: Dissolved oxygen with corresponding temperature reading Time and date reading was taken You can store up to 50 sets of data in any combination of %, mg/L or ppm readings.

  • Page 19: Memory Recall

    Instruction Manual DO 300 Memory Recall This function recalls the previous readings stored in the memory. You can only access MR from the MEASurement mode. Memory recall is in “Last In First Out” order. To recall readings: Press the MR/ key once to retrieve the last reading stored.

  • Page 20: Advanced Setup Functions

    Instruction Manual DO 300 ADVANCED SETUP FUNCTIONS Your waterproof meter advanced SETUP mode lets you customize your meter parameters. It’s menu features different main groups for various parameter preferences. This meter will have two sets of SETUP mode; one set is when SETUP mode is entered from % saturation or Clock mode (% saturation SETUP mode) and the other set is when SETUP is entered from the mg/L (ppm) measurement mode (mg/L (ppm) SETUP mode).

  • Page 21: Advanced Setup Mode Detailed Overview

    Instruction Manual DO 300 Advanced SETUP Mode Detailed Overview Press the SETUP key to enter SETUP mode. Press MI/ or MR/ keys to scroll through main groups. mg/L (ppm) Measurement Mode CLr: Memory Clear • Clear all stored readings Instructions on page 20. dPr: Dissolved Oxygen parameters •...
  • Page 22 Instruction Manual DO 300 % saturation Measurement Mode CLr: Memory Clear • Clear all stored readings Instructions on page 20. dPr: Dissolved Oxygen parameters • Select Hg or Pa barometric pressure units • Select barometric pressure Instructions on page 21. OFS: % saturation offset adjustment •...

  • Page 23: Clr: Memory Clear

    Instruction Manual DO 300 Clr: Memory Clear Use this feature to clear all memory values when you need to store a new series of values. This will avoid confusing the old values with the new ones. From measurement mode: Press the SETUP key to enter SETUP mode. Press MI/ or MR/ keys to scroll through main...

  • Page 24: Dpr: Dissolved Oxygen Parameters

    Instruction Manual DO 300 dPr: Dissolved Oxygen Parameters This parameter lets you adjust the barometric pressure and salinity. 8.3.1 Pressure adjustment mode Barometric pressure is vital to correct dissolved oxygen measurements. You need to enter the correct barometric pressure of the area where you are performing your DO measurement. This mode lets you perform two functions: Select either mm Hg or Kilo Pascal barometric pressure units.
  • Page 25 Instruction Manual DO 300 Figure 18: Change pressure units (mm Hg or kPa) & adjusting its values...
  • Page 26 Instruction Manual DO 300 8.3.2 Salinity Adjustment Mode NOTE: This mode appears only from mg/L (ppm) SETUP mode . Salinity correction mode lets you correct for the variations in oxygen solubility due to salt concentration in the sample. From measurement mode: Press the MODE key to select mg/L (ppm) mode.

  • Page 27: Ofs: Offset For % Saturation Measurement

    Instruction Manual DO 300 OFS: Offset for % Saturation Measurement NOTE: This feature appears from % saturation SETUP mode only. From measurement mode: Press the MODE key to select % saturation mode. Press the SETUP key to enter SETUP mode. Press MI/ or MR/ keys to scroll through main groups...

  • Page 28: Cal: Previous Calibration Information

    Instruction Manual DO 300 CAL: Previous Calibration Information This feature shows you the previous calibration data, along with date and time of calibration. This is a “view only” parameter. In % saturation SETUP mode: Calibration information is shown in % saturation units. In mg/L (ppm) SETUP mode: Calibration information is shown in mg/L (ppm) units.

  • Page 29: Ele: Electrode Properties

    Instruction Manual DO 300 ELE: Electrode Properties These “view only” parameters show you the electrode properties Checking electrode data from % saturation for diagnostic purposes: SETUP mode Probe Slope: Lets you view and give an indication of the probe’s efficiency. The value displayed is the ratio of the SETUP theoretical value to the actual value produced by the probe.
  • Page 30 Instruction Manual DO 300 Press the ENTER key. The upper display shows the 100% Checking electrode data saturation mV value. from mg/L (ppm) SETUP mode Press the ENTER key. The upper display shows the 0% saturation mV value. SETUP Press the ENTER key to move back to main group “ELE”. If e l e you want to return to measurement mode, press CAL/MEAS.

  • Page 31: Cof: Unit Configuration

    Instruction Manual DO 300 COF: Unit Configuration Unit configuration mode lets you select the following parameters: READY indicator and auto endpoint function. mg/L or ppm units (available from mg/L or ppm SETUP mode only) Temperature in °C or °F. Figure 25: Unit configuration from % saturation SETUP mode Figure 26: Unit configuration...
  • Page 32 Instruction Manual DO 300 8.7.1 READY Indicator and Auto Endpoint Function The first program lets you select: • “READY indicator ON” to indicate when the reading is stable. • “READY indicator OFF” for faster meter response. • Auto Endpoint Function Select auto endpoint ON to “HOLD”...
  • Page 33 Instruction Manual DO 300 8.7.2 Selecting mg/L or ppm units NOTE: This mode appears in mg/L (ppm) SETUP mode only. This mode lets you have the option to select either mg/L or ppm dissolved oxygen units. From measurement mode Press the MODE key to select mg/L (ppm) mode. Press SETUP key to enter SETUP mode.
  • Page 34 Instruction Manual DO 300 8.7.3 Selecting °C or °F Temperature Unit This meter lets you select between °C and °F units for temperature readings. From measurement mode Press SETUP key to enter SETUP mode. Press MI/ or MR/ keys to scroll through main groups until you view parameter “COF”...

  • Page 35: Lcd: Adjusting Lcd Brightness

    Instruction Manual DO 300 LCd: Adjusting LCD Brightness This mode allows you to make adjustment to the brightness of the backlit LCD. Selecting a dimmer back-lighting level helps conserve batteries. From measurement mode Press SETUP key to enter SETUP mode. Press MI/ or MR/ keys to scroll through main...

  • Page 36: Clo: Setting The Real-Time Clock

    Instruction Manual DO 300 CLO: Setting the Real-Time Clock Your meter features a real-time calendar and clock. This helps you meet GLP (Good Laboratory Practice) standards. From measurement mode Press SETUP key to enter SETUP mode. Press MI/ or MR/ keys to scroll through main groups until you view parameter “CLO”...
  • Page 37 Instruction Manual DO 300 Press MI/ or MR/ keys to toggle to the correct minutes. 15. Press the ENTER key to confirm the minutes and move to “second” selection. The “second” digits will flash. 16. Press MI/ or MR/ keys to toggle to the correct seconds.

  • Page 38: Rst: Resetting To Factory Default Setting

    Instruction Manual DO 300 8.10 rSt: Resetting to Factory Default Setting This program lets you reset all parameters to factory default settings. This clears all calibration data, memory, and any other setup functions you might have changed. However, the clock settings will remain as you have set them.

  • Page 39: Probe Care And Maintenance

    Instruction Manual DO 300 PROBE CARE AND MAINTENANCE The 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.

  • Page 40: Probe Care

    Instruction Manual DO 300 Probe Care Under typical operating conditions, the probe should last for several years. 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.

  • Page 41: Membrane Housing Replacement

    Instruction Manual DO 300 Membrane Housing Replacement Replacement of the membrane cap housing/ membrane is required only when you cannot calibrate the probe, or if the membrane is damaged. Typical membrane damages are punctures or wrinkles caused during measurements or cleaning. Your new DO probe comes with a replacement membrane housing.

  • Page 42: Membrane/O-Ring Replacement (Optional Procedure)

    Instruction Manual DO 300 Membrane/O-ring Replacement (Optional Procedure) It is recommended only experienced service personnel can perform this procedure. This procedure is OPTIONAL, and should only be performed if you have new membrane and O-ring. You are also required to have a membrane installation tool. These items are available as optional accessories in the Accessories section.
  • Page 43 Instruction Manual DO 300 10. Using the installation tool, screw the membrane lock back into the cap. Tighten the lock firmly over Installation tool the membrane and O-ring, but do not over tighten. Open Close 11. Inspect the membrane for wrinkles. If wrinkles exist, remove the membrane and repeat steps 8 –...

  • Page 44: Electrolyte Solution

    Instruction Manual DO 300 Electrolyte Solution The electrolyte solution in your probe’s cap will periodically evaporate and need to be replaced. Your new DO probe comes with accessories of one 50-ml replacement electrolyte solution and a spare membrane cap. The replacement electrolyte comes premixed and ready to use. To order more electrolyte solution, see Accessories section.

  • Page 45: Do Probe Troubleshooting Table

    Instruction Manual DO 300 DO Probe Troubleshooting Table When experiencing difficulties with the equipment, keep in mind of the following: Check for the obvious, such as physical condition of the probe, any signs of damage to the cable, power and signal connections etc. Determine whether it is the probe, meter or the surrounding environment that is causing the problem.
  • Page 46 Instruction Manual DO 300 Problem Probable Causes Solution It is not possible to Probe has dried out – no Service probe and change calibrate the probe in electrolyte inside. membrane. Use a stiff nylon brush to air – the display will remove the oxide built-up from the Probe is overdue for servicing not read high enough...

  • Page 47: Trouble Shooting Guide

    Instruction Manual DO 300 10 TROUBLE SHOOTING GUIDE Problem Cause Solution No display when Batteries not in place Check that batteries are in place turned on and making good contact. Batteries not in correct polarity (+ Re-insert batteries with correct and –...

  • Page 48: Error Messages

    Instruction Manual DO 300 11 ERROR MESSAGES LCD Display Indicates Cause Solution Err annunciator Unrecognised input Wrong input in selected Release key. Select valid from keypad mode. operations depending on mode. CAL & Err Calibration error. Wrong value input at Check your input value, annunciators on / calibration.

  • Page 49: Specifications

    Instruction Manual DO 300 12 SPECIFICATIONS Dissolved Oxygen Range 0.00 – 19.99 mg/L or ppm Resolution 0.01 mg/L; 0.01 ppm Relative accuracy ± 1.5% of Full Scale % Saturation of Oxygen Range 0.0 – 199.9 % Resolution 0.1 % Relative accuracy ±...

  • Page 50: Accessories

    Instruction Manual DO 300 13 ACCESSORIES Replacement Meter and Meter accessories Eutech Instruments Item Eutech Instruments Ordering Code. Waterproof DO 300 Dissolved Oxygen meter (back-lit display) complete with EC-DOWP300/01K submersible DO electrode (3m/ 10ft cable), electrode maintenance kit and carrying case with accessories...
  • Page 51 Instruction Manual DO 300 Oakton Instruments Item Oakton Instruments Ordering Code. Waterproof DO 300 Dissolved Oxygen meter with submersible DO electrode 35641-00 (3m/ 10ft cable), electrode maintenance kit, and carrying case with accessories Waterproof DO 300 Dissolved Oxygen meter only. 35640-01 Replacement submersible Dissolved Oxygen probe with 3-meter (10-ft) cable.

  • Page 52: Dissolved Oxygen & Meter Theory

    Instruction Manual DO 300 14 DISSOLVED OXYGEN & METER THEORY 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.

  • Page 53: Pressure Vs Altitude Table

    Instruction Manual DO 300 15 PRESSURE VS ALTITUDE TABLE Barometric pressure affects DO readings; therefore this meter lets you enter the correct barometric pressure at your altitude. If you do not have equipment that lets you measure the exact barometric pressure at your altitude, you can estimate it using the chart below. If you change the barometric pressure setting from its factory setting (760 mm Hg), the % saturation calibration value in air will automatically adjust to a value other than 100% (see “corrected % saturation value”...

  • Page 54: Factory Default Settings

    Instruction Manual DO 300 16 FACTORY DEFAULT SETTINGS Resetting the meter to factory default settings clears all DO calibration data and memory, and returns other setup functions to the default settings shown in the table below. However, the clock settings will remain as you have set them. See page 35 for directions on setting the meter to factory default settings.

  • Page 55: Over-View Of Setup Functions

    17 OVER-VIEW OF SETUP FUNCTIONS (The values shown above are for illustration purpose. Your meter may display different values depending on the settings & your environmental conditions)
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  • Page 59: Warranty

    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.
  • Page 60 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. Distributed by: P.O Box 5136, Blk 55, Ayer Rajah Crescent, Vernon Hills, IL 60061, USA...

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