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Summary of Contents for TPS Aqua Series
- Page 1 QUALITY. SERVICE. VALUE. Aqua Series Portables Aqua-DY User Manual One-Touch Calibration Waterproof User Friendly tps.com.au...
- Page 2 The Aqua-DY is a breeze to operate. This manual has been designed to help you get started, and also contains some handy application tips. If at any stage you require assistance, please contact either your local TPS representative or the TPS factory in Brisbane.
- Page 3 Page 2 TPS Pty Ltd Phone : (07) 3205 8027 International : 61 7 3205 8027 Email : sales@tps.com.au www.tps.com.au Aqua-DY Dissolved Oxygen -Temp. Meter Version : 1.1 Date 15/06/2021...
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Page 4: Table Of Contents
Page 3 Contents Introduction Aqua-DY Display and Controls Unpacking Information Specifications Operating Modes 9 Dissolved Oxygen Calibration Calibration Dissolved Oxygen Calibration Notes Dissolved Oxygen Calibration Messages Temperature Calibration 14 Calibration Calibration Notes 15 Calibration Messages Setting the Salinity Correction Value Battery Battery Saver Function Changing the Battery... -
Page 5: Introduction
Page 4 1. Introduction 1.1 Aqua-DY Display and Controls... - Page 6 Page 5 � Display 24 character alpha-numeric display. Can show any of the following combinations of readouts (see section 2). % Saturation + Salinity-corrected ppM Temperature (mg/L) + Temperature Salinity Correction Temperature only Value (in ppK) A unique “Large Digit” mode nearly doubles the size of the digits (section 2).
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Page 7: Unpacking Information
Page 6 1.2 Unpacking Information Before using your new Aqua-DY, please check that the following accessories have been included: Part No Aqua-DY Dissolved Oxygen-Temperature Instrument 123144/1 123144/3 123144/5 Oxygen sensor 123204 Oxygen sensor cable: 1, 3 or 5m cable (see cable label for part No) Membrane kit for oxygen sensor 123300 Manual... -
Page 8: Specifications
Page 7 1.3 Specifications Range Resolution Accuracy % Saturation 0 to 250.0 % Sat’n 0.1 % Sat’n ±0.3 % Sat’n 0 to 25.0 ppM 0.1 ppM ±0.1 ppM ppM (mg/L) 0 to 50.0 ppK 0.1 ppK Not Applicable Salinity (Manually set) -10.0 to 120.0 ±0.2 Temperature... - Page 9 Page 8 General Specifications Display 24 Character alphanumeric LCD, with full text prompts and error messages. Power 9V Alkaline Battery for 100+ hours operation. Battery Saver On Auto switch-off after 5 minutes :Continuous use Dimensions 165 x 85 x 35 mm Mass Instrument only Approx 280g Full Kit...
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Page 10: Operating Modes
Page 9 2. Operating Modes Press the key to select the desired operating mode. The sequence is shown in the following table… 100.0%S % Saturation Mode 25.0 Dissolved Oxygen data in % Saturation units is shown on the top line and Temperature data is shown on the bottom line. - Page 11 Page 10 Operating modes, continued… 25.0 Temperature Mode Temperature data only is shown on the top line. Select this mode to calibrate Temperature. Press to toggle between regular readout or large digit readout. � Back to % Saturation mode Note: The decimal point is replaced by a ” � “ if a Dissolved Oxygen or Temperature calibration has failed (see sections 3 and 4), if the unit is initialised (see section 7), or if the unit has lost its factory calibration (see section 9.1).
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Page 12: Dissolved Oxygen Calibration
Page 11 3. Dissolved Oxygen Calibration A “ � ” in place of the decimal point indicates that the Dissolved Oxygen readout is not calibrated, or a past calibration has failed. The “ � ” will be removed once an Air calibration has been successfully performed. 3.1 Calibration Switch the Aqua-DY on. -
Page 13: Dissolved Oxygen Calibration Notes
Page 12 Air Calibration (a) Hang the Dissolved Oxygen sensor in air. The tip of the sensor should be pointing downwards. (b) Allow the reading to stabilise. After a zero calibration, this may take up to 5 minutes. (c) Press and hold the key for 2 seconds to calibrate. -
Page 14: Dissolved Oxygen Calibration Messages
Page 13 3.3 Dissolved Oxygen Calibration Messages If a zero calibration has been successfully performed, the Aqua-DY will display the following message, and then display the zero response of the sensor. Cal. OK Zero= 1.0% If a zero calibration has failed, the Aqua-DY will display the following message, then the failed zero value of the sensor. -
Page 15: Temperature Calibration
Page 14 4. Temperature Calibration A “ � ” in place of the decimal point indicates that the Temperature readout is not calibrated, or a past calibration has failed. The “ � ” will be removed once Temperature has been successfully calibrated. 4.1 Calibration Switch the Aqua-DY on. -
Page 16: Calibration Notes
Page 15 4.2 Calibration Notes Temperature calibration information is stored in memory when the meter is switched off, even if the battery is removed. Temperature does not need to be re-calibrated unless the Dissolved Oxygen sensor is replaced or the meter is initialised. 4.3 Calibration Messages If a temperature calibration has been successfully performed, the Aqua-DY will display the offset value of the sensor. -
Page 17: Setting The Salinity Correction Value
Dissolved Oxygen readings. To set the salinity correction value: Measure the salinity of the sample solution. For best results, use a good quality salinity meter, such as a TPS model Aqua-C or WP-84. Note the reading. Switch the Aqua-DY on. -
Page 18: Battery
Page 17 6. Battery 6.1 Battery Saver Function The Aqua-DY is equipped with a battery saver function. If no button has been pressed for five minutes, the unit beeps and flashes the display for 20 seconds, and then shuts off. This function can be disabled for continuous use. -
Page 19: Changing The Battery
Page 18 6.2 Changing the Battery Turn the instrument over and locate the 2 battery cover screws on the rear. See the diagram below. Raise the fold out stand (so it is out of the way) and then fully loosen both screws. -
Page 20: Initialising The Aqua-Dy
8. Instrument software version number. If you need to phone or fax TPS for any further technical assistance, the version number of your Aqua-DY firmware may of benefit to us. Please obtain the version number before phoning or faxing. -
Page 21: Troubleshooting
Possible Causes Remedy Message Factory The EEPROM chip which The unit must be returned to Cal. Fail contains the factory TPS for service. calibration information has failed. Handbook Memory User calibration settings Re-calibrate the instrument. Failed have been lost or corrupted. -
Page 22: Dissolved Oxygen Troubleshooting
4. Sensor is faulty. Return sensor to factory for repair or replacement Blackened Silver Sensor has been exposed to Return to the TPS factory for anode sulphides or other chemical cleaning and service. poisoning. Tarnished or Sensor has been chemically... -
Page 23: Temperature Troubleshooting
Page 22 9.3 Temperature Troubleshooting Symptom Possible Causes Remedy Displays “OVR C” 1. Faulty detachable cable. Fit new detachable cable. when sensor is 2. Faulty sensor. Fit new sensor. plugged in. 1. Faulty instrument. Return instrument to factory for repair. Temperature 1. -
Page 24: Dissolved Oxygen Sensor Fundamentals
Page 23 10. Dissolved Oxygen Sensor Fundamentals The sensor used is the amperometric type of Clark Sensor and is suitable for the measurement of oxygen pressures in the range 0 to 100 cm of mercury. While the sensor actually reads partial pressure of oxygen, the circuit is calibrated to be read in percentage saturation or parts per million (Milligrams/litre). -
Page 25: Maintenance Of The Membrane
Page 24 10.2 Maintenance Of The Membrane The membrane does not require replacement as long as it remains intact. If punctured or suspected of leaking around the edges, it must be replaced. Oils, fats or other greasy build-ups will reduce the sensitivity of the sensor, eventually making it fail to calibrate. -
Page 26: Notes On Units Of Dissolved Oxygen
Page 25 10.4 Notes On Units Of Dissolved Oxygen The terms "Oxygen Concentration" and "Oxygen Partial Pressure" frequently give rise to some confusion. Oxygen Concentration is the absolute quantity of oxygen present per � unit mass of the liquid. Oxygen Partial Pressure is the oxygen fraction of the total pressure of �... -
Page 27: Equilibrium Conditions
Page 26 If mass units are used for measurement of Dissolved Oxygen, the temperature problem of relating the linear partial pressure reading of the sensor to the mass (ppM or mg/L) at different temperatures becomes more involved. As well, there is the mass variation due to dissolved salts (salinity correction). -
Page 28: Velocity Past The Membrane
Page 27 10.6 Velocity Past The Membrane Workers have shown that the relationship between the diffusion current (oxygen current) and the external velocity of the liquid is expotential. Some workers using thicker membranes have shown even less dependence of the diffusion current on liquid velocity. Because of the expotential nature of the relationship, considerable changes in velocity have to be made before noticing any change in the diffusing current once the flow is sufficiently high.
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