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Related Manuals for EUTECH INSTRUMENTS CYBERSCAN DO 100 DISSOLVED OXYGEN METER
Summary of Contents for EUTECH INSTRUMENTS CYBERSCAN DO 100 DISSOLVED OXYGEN METER
- Page 1 Instruction Manual DO 100 Hand-held Dissolved Oxygen Meter 235201 Technology Made Easy ... rev 4 01/04...
- Page 3 Eutech Instruments/Oakton Instruments Authorised Distributor. Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or malfunction to the meter caused by improper use of the instrument.
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Page 4: Table Of Contents
TABLE OF CONTENTS INTRODUCTION DISPLAY AND KEYPAD FUNCTIONS Display Keypad PREPARATION Inserting the Batteries Connecting the Probe Connecting the AC Adapter CALIBRATION Temperature Calibration DO Calibration in Air (with ATC) –% Saturation Mode DO Calibration in mg/L Mode MEASUREMENT Taking Measurement HOLD FUNCTION MEMORY FUNCTION Data Input... -
Page 5: Introduction
Instruction Manual DO 100 INTR ODUCTION Thank you for selecting the DO 100 portable meter. The DO 100 portable meter is a microprocessor-based instrument that is designed to be practical and user-friendly. It is capable of measuring Dissolved Oxygen (DO) in mg/L or ppm units, % saturation and temperature. -
Page 6: Display And Keypad Functions
Instruction Manual DO 100 D ISPLAY AND K EYPAD FU NCTION S 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. •... -
Page 7: Keypad
Instruction Manual DO 100 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 2. Some buttons have several functions depending on its mode of operation. Function ON/OFF Powers on and shuts off the meter. - Page 8 Instruction Manual DO 100 Figure 2: Keypad...
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Page 9: Preparation
Instruction Manual DO 100 PR EPARATION Inserting the Batteries The DO 100 is packaged with 4 “AAA” alkaline batteries required for operation. To insert the batteries into the meter, follow the procedure outlined below. To open the battery compartment, press down the catch of the battery cover. See Figure 3a below. -
Page 10: Connecting The Probe
Instruction Manual DO 100 Connecting the Probe The DO 100 uses a special notched 6-pin connector to attach the probe to the meter. NOTE: Do not substitute other probes or electrodes. For replacement probe, see the Section 14 “Accessories” on page 52. NOTE: Keep connector dry and clean. -
Page 11: Connecting The Ac Adapter
Instruction Manual DO 100 Connecting the AC Adapter The AC adapter is not included with your meter; see the Section 14 “Accessories” on page 52. Ensure that the input mains voltage (110 or 220 V at 200 mA) matches your adapter requirements. -
Page 12: Calibration
Instruction Manual DO 100 CA LIBRATION 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 13: Temperature Calibration
Instruction Manual DO 100 Temperature Calibration DO in mg/L is dependent on temperature, so it is first necessary to calibrate or verify the temperature reading. Temperature calibration is accessible from the mg/L or ppm measurement mode. This is illustrated in the flow diagram in Figure 7. The temperature sensor is part of the DO probe and the “ATC”... - Page 14 Instruction Manual DO 100 Figure 7: Flow Diagram for Temperature and mg/L (ppm) Calibration...
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Page 15: Do Calibration In Air (With Atc) -% Saturation Mode
Instruction Manual DO 100 DO Calibration in Air (with ATC) –% Saturation Mode 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 16 Instruction Manual DO 100 To calibrate 0% Saturation: SETUP MEAS READY °C Figure 9: Calibration for 0.0% ENTER Saturation Power on the unit and immerse the DO probe in SETUP 0% solution. Ensure that the tip of the probe is completely immersed.
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Page 17: Do Calibration In Mg/L Mode
Instruction Manual DO 100 DO Calibration in mg/L Mode As mentioned in the beginning of this section, the amount of oxygen dissolved in a liquid will depend on its temperature, pressure and salinity. It is therefore very important to set these parameters correctly before attempting to do a calibration. -
Page 18: Measurement
Instruction Manual DO 100 M EA SUR EM EN T During measurement, care must be taken not to allow the membrane of the DO probe touch any surface. It is always advisable to insert the probe guard (refer to Figure 33 and 34 on pages 40 and 41). -
Page 19: Hold Function
Instruction Manual DO 100 HOLD FUNCTION This feature lets you freeze the value of the DO reading 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. “HOLD” will appear on the display. -
Page 20: Memory Function
Instruction Manual DO 100 MEMORY FUNC TION The DO 100 can store up to 16 sets of data. Each data stored can either be in % Saturation, mg/L or ppm together with its respective temperature reading taken at that moment. Stored data can be easily recalled based on LIFO (Last-In- First-Out) system. - Page 21 Instruction Manual DO 100 Data No. MEM Symbol Data No. MEM Symbol Since the memory management is based on LIFO, once memory is full, the first value that was stored in the memory will be erased to create space for the new value to be input. NOTE: Data input will remain even after the meter is switched off.
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Page 22: Memory Recall
Instruction Manual DO 100 Memory Recall Based on LIFO memory management, the last data input into memory will be recalled first. The data recalled will depend on which measurement mode (mg/L or % Saturation) the meter is presently in. For example, if the meter is in % Saturation measurement mode, pressing key will recall data recorded in that measurement mode only. - Page 23 Instruction Manual DO 100 To recall data input in the next measurement mode note the following procedure: Press CAL/MEAS key to exit memory mode. Press MODE key to toggle to the other measurement mode. Press recall data recorded that measurement mode. Press MR/ key again for next recorded data.
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Page 24: Set Function
Instruction Manual DO 100 SET FUNCTION There are two setup parameters for each of the two measurement modes (% Saturation and mg/L or ppm). This is due to the different properties associated with each unit of measurement. The SETUP function is a powerful feature that allows you to customise the meter to your needs. -
Page 25: Set Function In % Saturation Measurement Mode
Instruction Manual DO 100 SET Function in % Saturation Measurement Mode This part of the SETUP function allows display of values and the changing of parameters unique to the % Saturation measurement mode. Figure 16 on the following page shows the flow diagram of the SETUP menu. - Page 26 Instruction Manual DO 100 Press ENTER and MI/ or MR/ key to enter the menu to change parameter or simply to view the value. At any level, press CAL/MEAS to exit setup function and go back to the measurement mode. Figure 16: Flow Diagram in SETUP Menu (% Saturation mode.)
- Page 27 Instruction Manual DO 100 8.1.1 P 1.0: Clr This clears all memory data input keyed during measurement. Default setting is OFF. Press SET key to enter the first level in its setup menu. Press MI/ or MR/ key to switch to “ON”. Press ENTER key to confirm deleting all memory data.
- Page 28 Instruction Manual DO 100 8.1.2 P 2.0: OFS 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 standardised without you having to perform manual calculation. Once you come to the setup menu shown in Figure 18, press ENTER.
- Page 29 Instruction Manual DO 100 8.1.3 P 2.2: bAr This menu allows you to do two things: • Select the appropriate unit of measurement of pressure --- either mm Hg or kPA. • Keying of actual atmospheric pressure value based on the altitude of the location.
- Page 30 Instruction Manual DO 100 Figure 19: Selecting Unit of Pressure & Adjusting its Value...
- Page 31 Instruction Manual DO 100 REMARKS: The following 3 menus display the condition of the DO probe from the last calibration performed. Refer Figure 20 on the following page for flow diagram. 8.1.4 P 3.0: EL 1 This menu displays the slope of probe as a ratio of the ideal to the measured value. Once you come to the [EL 1, P 3.0] menu shown in Figure 20, press ENTER.
- Page 32 Instruction Manual DO 100 Figure 20: Checking Electrode Status in EL Menu...
- Page 33 Instruction Manual DO 100 8.1.7 P 4.1: rdY You can activate or deactivate the stabilising feature in the meter in this menu. Once you come to the setup menu shown in Figure 21, press ENTER. Press MI/ or MR/ key to toggle between ON or OFF. Press ENTER or MODE key to go into the next menu.
- Page 34 Instruction Manual DO 100 8.1.9 P 5.0: r.Set This allows you to clear all parameters programmed above and re-set it to factory default values. Once the [r.Set P 5.0] menu is reached (see Figure 23), press MI/ or MR/ key to turn reset feature ON (or OFF).
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Page 35: Set Function In Mg/L Or Ppm Measurement Mode
Instruction Manual DO 100 SET Function in mg/L or ppm Measurement Mode This part of the SETUP function allows display of values and the changing of parameters unique to the mg/L measurement mode. Figure 25 on the following page shows the flow diagram of the SETUP menu. - Page 36 Instruction Manual DO 100 Figure 25: Flow Diagram in SETUP Menu (mg/L or ppm)
- Page 37 Instruction Manual DO 100 8.2.2 P 2.1: SAL This is a useful feature that allows you to key in the salinity value of the sample solution to be measured. Once you come to the [SAL, P 2.1] menu shown in Figure 26, press ENTER.
- Page 38 Instruction Manual DO 100 NOTE: Press HOLD key to skip any part of the operation and move on to the next menu, or press CAL/MEAS key to exit setup menu to go back to measurement mode. Figure 27: Select Units for Pressure and Adjust Its Value...
- Page 39 Instruction Manual DO 100 REMARKS: The following 2 menus display the condition of the DO probe from the last calibration performed. Refer Figure 28 for flow diagram. 8.2.4 P 3.0: EL 1 This menu displays the slope of probe as a ratio of ideal to its measured value. Once you come to the [EL 1, P 3.0] menu shown in Figure 28, press ENTER.
- Page 40 Instruction Manual DO 100 8.2.6 P 4.0: do This menu allows you to choose between mg/L or ppm as unit of measurement. Press ENTER. Press MI/ or MR/ key to select “mg/L” or “ppm” as unit of measurement. Press ENTER key to go into the next level. See Figure Figure 29: Selecting mg/L or ppm as units of measure 8.2.7...
- Page 41 Instruction Manual DO 100 8.2.8 P 4.2: A.oFF The meter has a Power Auto-off feature that switches off the unit 20 minutes after the last key press. In situation where longer period of time is needed to take measurement, the power Auto- off feature can be switched off in this menu.
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Page 42: Dissolved Oxygen Probe
Instruction Manual DO 100 DISSOLVED OXYG EN PROBE Dissolved Oxygen Principle 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 –... -
Page 43: Probe Care
Instruction Manual DO 100 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 44: Membrane Housing Replacement
Instruction Manual DO 100 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. For more information see trouble-shooting guides in sections 9.6 and Your new DO probe comes with a replacement membrane housing. - Page 45 Instruction Manual DO 100 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”...
- Page 46 Instruction Manual DO 100 10. Using the installation tool, screw the membrane lock back into the cap. Tighten the lock firmly over the membrane and O-ring, but do not over tighten. Installation tool Open Close 11. Inspect the membrane for wrinkles. If wrinkles exist, remove the membrane and repeat steps 8 –...
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Page 47: Electrolyte Solution
Instruction Manual DO 100 Electrolyte Solution The electrolyte solution in your probe’s cap will deplete on usage and will need to be replaced periodically. 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”... -
Page 48: Do Probe Troubleshooting Table
Instruction Manual DO 100 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 49 Instruction Manual DO 100 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...
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Page 50: Troubleshooting
Instruction Manual DO 100 10 TR OUBLESHOOTING Problem Cause Solution No display when Batteries not in place Check that batteries are in place and turned on making good contact. Batteries not in correct polarity Reinsert batteries with correct polarity. (+ and -). Weak batteries Replace batteries or attach optional AC adapter. -
Page 51: Error Messages
Instruction Manual DO 100 11 ERROR MESSAGES LCD Display Indicates Cause Solution Err 1 (in primary Memory write error. Instrument too old (> 10 Turn meter on and off display) years). Hardware again. If message persists, failure. return unit*. Err. 2 (in primary Memory checksum Hardware failure. -
Page 52: Additional Information
Instruction Manual DO 100 12 ADD ITIONAL IN FORMAT ION 12.1 Dissolved Oxygen 12.1.1 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. - Page 53 Instruction Manual DO 100 12.1.2 Measurement Units One measure of DO in water is parts per million (ppm) which is the number of oxygen molecules (O ) 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.
- Page 54 Instruction Manual DO 100 12.1.4 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.
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Page 55: Specifications
Instruction Manual DO 100 1 3 S P E C I F ICAT ION S Dissolved Oxygen Range 0.00 – 20.00 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 –... -
Page 56: Accessories
Instruction Manual DO 100 14 ACCESSORIES Replacements and accessories Eutech Instruments Item Eutech Instruments Ordering Code DO 100 Hand-held Dissolved Oxygen Meter complete with one Submersible EC-DO100/01 Dissolved Oxygen probe with 3-meter (10-ft) cable (EC-DOHANDYNEW), one assembled membrane cap housing (15X241402) and one 50ml electrolyte (01X211226). - Page 57 Instruction Manual DO 100 Oakton Instruments Item Oakton Instruments Ordering Code DO 100 Hand-held Dissolved Oxygen Meter complete with one Submersible 35640-00 Dissolved Oxygen probe with 3-meter (10-ft) cable (EC-DOHANDYNEW), one assembled membrane cap housing (15X241402) and one 50ml electrolyte (01X211226).
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Page 58: 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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