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YEO-KAL 615 User Manual

Water quality analyser
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Yeo-Kal Electronics Pty Ltd 18/26 Wattle Road, Brookvale NSW Australia
Model
615 Water Quality Analyser
For firmware V1.23
Version 3.2
Date
26/4/2013
Information in this document is the copyright of YEO-KAL Electronics Pty Ltd and is subject to change
without notice. No part of this document may be copied or reproduced by any means without the
express written permission of YEO-KAL Electronics Pty Ltd. All trademarks are the property of their
respective companies.
Telephone +61 2 9939 2616 Fax +61 2 9905 1100
USER MANUAL
© 2012 Yeo-Kal Electronics Pty Ltd

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  • Page 1 Date 26/4/2013 Information in this document is the copyright of YEO-KAL Electronics Pty Ltd and is subject to change without notice. No part of this document may be copied or reproduced by any means without the express written permission of YEO-KAL Electronics Pty Ltd. All trademarks are the property of their respective companies.

  • Page 2: Table Of Contents

    Contents INTRODUCTION ..................5 ..................5 ENERAL ESCRIPTION ....................5 PECIFICATIONS Reader Unit: ................... 5 Sensors: ....................6 Temperature ..................6 Conductivity ................... 6 Salinity ....................6 Dissolved Oxygen ................... 6 Turbidity ....................6 pH ......................7 ORP ......................7 Depth (optional) ...................
  • Page 3 ..............23 ROGRAMMING THE EADER (7) ..................24 HECK ATTERY OFF/ON (8) ................24 (9) ................. 25 ENSOR ERIAL UMBER SET UP MENU ................... 26 (1) ..................... 26 LOCK 611 S (2) .................... 26 ETUP (3) ................26 SSIGN ENSORS (4) ................
  • Page 4 D.O. S ................. 39 ENSOR AINTENANCE Changing the Membrane ..............40 Dissolved Oxygen Stirrer Maintenance ..........40 H/ORP S ..............41 ENSOR AINTENANCE ..............42 URBIDITY ENSOR AINTENANCE ............43 ONDUCTIVITY ENSOR AINTENANCE STORAGE ....................45 APPENDIX 1 - CONVERSIONS USED ............46 APPENDIX 2 - COMPLIANCE ..............

  • Page 5: Introduction

    Both stored data and calibration information can be easily down loaded to a computer using the YEO-KAL data transfer programs. The YK615 comes with storage container to protect the sensors while the instrument is in storage.

  • Page 6: Sensors

    Sensors: Temperature Range: -2 - 50ºC Accuracy: ±0.05ºC Resolution: 0.01ºC Type: pt 100 platinum element Conductivity High Range: 0 - 80 ms/cm Accuracy: ±0.05 ms/cm Resolution: 0.02 ms/cm Low Range: 0-8000 us/cm Accuracy: ±5 us/cm Resolution: 3 us/cm Type: Four electrode cell Salinity Range: 0 - 60 ppt...

  • Page 7: Orp

    Range: 0 - 14 Accuracy: ±0.03 Resolution: 0.01 Type: Combination silver/silver chloride type with sintered Teflon* junction Range: -700 mV to +1100 mV Accuracy: ±3 mV Resolution: 1 mV Type: Combination bare metal electrode common reference junction with pH electrode (see Appendix 1 - Conversions Used) Depth (optional) Range:...

  • Page 8: Description Of Reader Unit

    Description of Reader Unit The Reader Unit is housed in a tough, durable, high impact polycarbonate case with a keypad and alpha-numeric display mounted on the front panel. The side of the case has five connectors. The top connector is used for data output, the second for connecting an external power supply and the third is the sensor connector.
  • Page 9 Figure 1: Reader unit for the YK615 : a) Top view showing key pad and alphanumeric display b) End view showing connectors.

  • Page 10: Description Of Probe

    Description of Probe The probe assembly consists of sensor, cable and connectors. The body of the probe is made of PVC with a PVC sensor guard. The interface cable is permanently connected to the probe body to eliminate the need for underwater connectors.

  • Page 11: Temperature Sensor

    Temperature Sensor The temperature sensor consists of a pt 100 platinum element, housed in a stainless steel sheath for robustness and corrosion resistance. The temperature sensor requires little maintenance, however the temperature measurement is used for calculating the dissolved oxygen in mg/l and for temperature correction of the conductivity sensor, so it is important that the temperature sensor is properly calibrated.

  • Page 12: Dissolved Oxygen Sensor

    The coating should last for a long period of time if it is not mechanically removed, however, the coating can be replaced using the optional platiniser or by returning the sensor to YEO-KAL Electronics Pty Ltd. Turbidity Sensor The turbidity sensor is located in the hole which runs through the bottom section of the probe and is lined with a glass tube.

  • Page 13: Assembly

    Assembly The YK615 comes already assembled. The only construction required is to connect the probe assembly to the Reader Unit and, if necessary, connecting the external power supply. Connecting the Probe Assembly To attach the probe assembly, first unscrew the knurled connector cap from the SENSOR connector of the Reader Unit.

  • Page 14: Operation

    Operation The YK615 comes already assembled. The only construction required is to connect the probe assembly to the Reader Unit and, if necessary, connecting the external power supply. If the pH sensor has a cap over it, the cap should be removed (SLIDE THE CAP OFF, DO NOT UNSCREW) prior to operation.

  • Page 15: The Menu Options Are As Follows

    Arrows: Up, Down, Back or Forward used in the main menu and tagging data. The menu options are as follows: Main Menu ADJUST CONTRAST Alter display contrast ALT CORRECT Enter altitude for correcting D.O. readings STORE DAT OUT Down load store data to computer ERASE STORE MEMORY Erase data entered using the...

  • Page 16: Adjust Contrast (1)

    600 readings. Once stored, the data can then be down loaded into a computer via the YEO-KAL software or printed at a later date. The store memory is used to hold spot measurements. To store a reading while in the field simply press the STORE key.

  • Page 17: Erase Store Data (4)

    By date, All data that falls between two dates and times will be down loaded with or without the calibration header. By tag, all data after a tag will down loaded with or without calibration constants included. If another tag is required the operator will be asked to edit the existing data tag so that the existing tag cannot used again.
  • Page 18 YEO-KAL MODEL 615 SERIAL NUMBER: DATE OF DOWNLOAD: 18/11/05 16:33 DATE FORMAT: DD/MoMo/YY HH:MM:SS Port Param Date Time lo dat lo sp lo temp hi dat hi sp hi temp offset slope -----------------------------------------------------------------------------------------------$D Ser4 Depth (M) 11/11/05 09:57 0.00 0.00 100.00...
  • Page 19 Date Time Depth (M) Temp (C) E.C (uscm) E.C (mscm) Sal (ppt) Dens(g/cm3)S.G. (sg) TDS (g/l D.O.(%sat) D.O.(mg/l) pH (pH) ORP (mv) Turb (ntu) ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 18/11/05 16:32:41 0.00 21.23 0.00 0.00 997.8 0.9979 39.9 3.54 6.81 144.0 18/11/05 16:32:45 0.00 21.25 0.00 0.00...
  • Page 20 Data tag # 1:=ABC Date 18/11/05 18/11/05 18/11/05 18/11/05 18/11/05 Time 16:32:41 16:32:45 16:32:48 16:32:50 16:32:52 Depth (M) 0.00 0.00 0.00 0.00 0.00 Temp (C) 21.23 21.25 21.26 21.27 21.27 E.C (uscm) E.C (mscm) 0.00 0.00 0.00 0.00 0.00 Sal (ppt) 0.00 0.00 0.00...
  • Page 21 Temp (C) 21.25 21.26 21.27 21.27 21.28 E.C (uscm) E.C (mscm) 0.00 0.00 0.00 0.00 0.00 Sal (ppt) 0.00 0.00 0.00 0.00 0.00 Dens(g/cm3) 997.8 997.8 997.8 997.8 997.8 S.G. (sg) 0.9979 0.9979 0.9979 0.9979 0.9979 TDS (g/l D.O.(%sat) 39.9 51.0 59.2 63.9...
  • Page 22 Data tag # 1:=ABC Date Time Depth (M) Temp (C) E.C (uscm) E.C (mscm) Sal (ppt) Dens(g/cm3)S.G. (sg) TDS (g/l D.O.(%sat) D.O.(mg/l) pH (pH) ORP (mv) Turb (ntu) ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 18/11/05 16:32:41 0.00 21.23 0.00 0.00 997.8 0.9979 39.9 3.54 6.81 144.0 18/11/05 16:32:45 0.00...

  • Page 23: Start Logger (5)

    In order to down load the data stored in memory to a computer, you will need terminal software ie Hyperterminal Data Transfer program or similar and the purpose built communications cable. To transfer data, perform the following operations: 1. Connect the 3 pin connector of the communications cable to the COMMS connector of the Reader Unit, (see figure 1).

  • Page 24: Check Battery (7)

    Aux batt/Charger input on the Reader Unit. The 615 can now be switched ON and act as an auxiliary power supply and charge the batteries at the same time. The battery charger is an intelligent system that takes care of NI-cad and NI-MHO Type rechargeable batteries and adjusts itself for best charging.

  • Page 25: Sensor Serial Number (9)

    Switching the unit ON, then go to Main Menu and Switch Data Port ON/OFF press ENTER. Sensor Serial Number (9) The reader reads the serial number of the probe attached to the 615. If more then one unit is used it identifies the correct probe to be used with the Reader Unit.

  • Page 26: Set Up Menu

    611 Setup (2) If the 615 is supplied with a Model 611 probe assembly, all that is necessary to configure the system to operate as a model 611 is to go to 611 Set up and press ENTER and enter again if the probe is fitted with a depth sensor or ESC if no depth sensor is fitted.

  • Page 27: Set Precision (5)

    ENTER to accept. Instrument Timeout (7) To save battery power the 615 will shutdown if no key is pressed after X minutes. Use arrow keys to adjust the time out from ) minutes to 120 minutes. Press ENTER to accept.

  • Page 28: Set File Out (9)

    Flow Control: None Set File Out (9) The display configuration and sensor format can be down loaded from the 615 to a PC for later retrieval by the current operator. The configuration file is sent to a PC using a terminal program and the settings are previously mentioned in (9) In Constants.

  • Page 29: Calibration

    615. 2. In cal constants As mentioned in 1. The calibration constants can be up loaded back into the 615 If the instrument has been calibrated incorrectly the saved data files may be edited and up loaded back into the 615 and the already stored data can be corrected while down loading it into a PC.
  • Page 30 Select cal inst and press ENTER. If there is any data in the Reader Unit memory, the message CLEAR ALL MEM? will appear on the display. Press ENTER to clear memory or ESC to return to the main menu. Once you have entered the calibration menu, use the arrow keys to scroll through the menu and select the sensor which you wish to calibrate by pressing ENTER.

  • Page 31: Temperature Calibration

    Temperature Calibration The temperature calibration should vary very little over the lifetime of the instrument however it is worth checking on the accuracy of your temperature measurements before calibrating the dissolved oxygen or salinity sensors. Temperature calibration is performed at two temperatures. The low temperature must be between 0 and 20 C and the high temperature must be between 30 and 50C.

  • Page 32: Low Conductivity Calibration

    3. If you wish to continue for low calibration, leave the probe in air, a visual display of the raw data is seen on the LCD display. When the raw data D is stable press ENTER, the salinity calibration coefficient will then be automatically updated.

  • Page 33: Ph Calibration

    To make a solution with 100% saturation, aerate a sample of fresh water for about two hours. A fish tank air pump and bubbler is ideal for this purpose. When you have the calibration standards ready, perform the following steps: 1.

  • Page 34: Orp Calibration

    high set point and press ENTER and a visual display of the raw data is seen on the LCD display. When the data is stable press ENTER. Press the arrow and number keys to change the displayed pH to the correct value (whichever was selected between 6.0 and 12.0) then press ENTER, the pH calibration coefficients will then be automatically updated and the instrument will return to the calibration menu.

  • Page 35: Depth Calibration

    2. If you wish to continue, immerse the probe in distilled water press ENTER or ESC the raw data is seen on the LCD display. When the data is stable press ENTER. The turbidity calibration coefficients will then be automatically updated. 3.

  • Page 36: Internal Bluetooth And Gps

    Bluetooth This method can be used to communicate to a PC. Calibration, real time and logged data can be transmitted from the 615 to the PC and calibration constants from the PC to the 615. To use bluetooth a bluetooth enabled PC can be used.

  • Page 37: Establishing Bluetooth And Gps Power

    Establishing Bluetooth and GPS Power If the reader unit is reset for any reason the power to the bluetooth and GPS modules is deactivated. Press the MENU key. Go to SETUP menu and press ENTER, go to ASSIGN/DEL sensor, press ENTER. Assign sensor will be displayed press ENTER. ASSIGN AUX CHAN 0 will be displayed.

  • Page 38: Maintenance

    Maintenance Reader Unit Maintenance The Reader Unit requires little maintenance except to charge the batteries as necessary and the connectors are kept clean and dry. When the voltage from the battery pack falls below 9.8 volts, the Reader Unit will display the message BATTERY low on the LCD display If the unit is not recharged the voltage will still drop and the instrument will then automatically shut down, although any data stored in the memory will be retained.

  • Page 39: Battery Replacement

    Battery Replacement The procedure for replacing the Reader Unit batteries is as follows: 5. Turn off the instrument and place the Reader Unit face down on a clean dry table and remove the four stainless steel retaining screws under the front panel flange.

  • Page 40: Changing The Membrane

    Changing the Membrane Figure 5: Exploded view of dissolved oxygen sensor. To change the membrane, perform the following steps, refer to figure 5. 1. Remove the dissolved oxygen sensor from the probe. To do this, lift the sensor guard and rotate the bottom section of the probe to expose the sensors. Ensure that the probe and sensors are completely dry.

  • Page 41: Ph/Orp Sensor Maintenance

    The Stirrer for the dissolved oxygen sensor is a magnetically operated paddle which oscillates and forces water past the sensor membrane. This stirrer may occasionally become clogged, particularly if the water you are testing contains a large amount of magnetic particles. To remove the stirrer paddle for cleaning, proceed as follows: 1.

  • Page 42: Turbidity Sensor Maintenance

    The later 615’s come with a black acetyl screen. This is inserted into the glass tube to reduce stray infra red from causing errors in clear water. At the end of the tube are two holes (apertures) that allow the infra red light source to pass which is then detected at 90 deg to the source.

  • Page 43: Conductivity Sensor Maintenance

    Remove the screen by unscrewing two retaining screws at the bottom of the probe, situated on the flange. Pull the tube out and wash it and also clean the glass tube. Reinsert the screen and do up the two retaining screws. Conductivity Sensor Maintenance To maintain the performance and accuracy of the conductivity / salinity sensor, the electrodes need to be periodically cleaned and if the platinum black coating is damaged,...
  • Page 44 grease to the sensor body to ensure that a water tight seal is achieved. The sensor can only be installed with the connector pins aligned. Align the sensor and push it into the probe assembly. Be sure to recalibrate the salinity and low conductivity.

  • Page 45: Storage

    Storage When storing the instrument, the pH electrode should be kept moist in a solution of 3M KCl (approximately 22 grams of KCl dissolved in water to make 100 ml of solution). It is advisable to buffer this solution to bring it to approximately pH 5 or 6. This solution may be contained in either the small pH sensor cap •...

  • Page 46: Appendix 1 - Conversions Used

    Appendix 1 - Conversions Used The YK615 measures dissolved oxygen as % saturation and then automatically converts the reading to milligrams per litre. This conversion is calculated from the dissolved oxygen solubility tables found in International Oceanographic Tables vol.2. National Institute of Oceanography 1972.

  • Page 47: Appendix 2 - Compliance

    Appendix 2 - Compliance for probe N 10255...

  • Page 48: Appendix 3 - Part Numbers

    Appendix 3 - Part Numbers Part Number Description YK615-001 Probe assembly YK615-002 Cable assembly YK615-003 Dissolved oxygen sensor YK615-004 pH/ORP sensor YK615-005 Conductivity sensor YK615-006 Depth sensor YK615-007 Dissolved oxygen membrane YK615-008 Dissolved oxygen O-ring YK615-009 Dissolved oxygen membrane retaining ring YK615-010 Dissolved oxygen electrolyte YK615-012...

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