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QUALITY. SERVICE. VALUE. WP Series Waterproof Portables WP-84 User Manual Waterproof User Friendly GLP Compliant USB Download Data logging Multiple Power Options tps.com.au...
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The WP-84 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 Contents Introduction WP-84 Display and Controls Unpacking Information Specifications WP-84 Menu Structure Operating Modes Selecting Conductivity, TDS (setting factor) or Salinity Mode Conductivity (TDS/Salinity) Calibration Calibration Procedure Calibration Notes Calibration Messages Temperature Calibration Calibration Procedure Calibration Notes Calibration Messages ATC Coefficient Setting the ATC Coefficient Calculating the ATC Coefficient of a Solution...
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Page 4 10.8 Importing Data into Microsoft Excel Battery Saver Function Recharging the Battery Clock Function 13.1 Setting the Clock 13.2 Displaying or Hiding the Clock Selecting k=0.1 or k=10 Sensors Initialising the WP-84 Instrument firmware version number Troubleshooting 17.1 General Errors 17.2 Conductivity/TDS/Salinity Troubleshooting...
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Page 6 Press to record readings into memory. See section 8.1. Press to show or hide the date and time. See section 13.2. Also used to select k=0.1 or k=10 sensor, when the standard k=1 sensor is not being used. Press to start or stop automatic logging.
Page 7 Unpacking Information Before using your new WP-84, please check that the following accessories have been included: Part No 1. WP-84 Conductivity-TDS-Sal-Temp instrument 122159/1 122159/3 122159/5 2. Conductivity/ATC/Temperature Sensor: 1, 3 or 5m cable k=10 1, 3 or 5m cable (see cable label for part No) k=0.1 1, 3 or 5m cable 3.
Page 8 Specifications Conductivity Ranges 4 ranges, with automatic range selection. k=0.1 Sensor...0 uS/cm to 2000 uS/cm k=1.0 Sensor...0 uS/cm to 20.00 mS/cm k=10 Sensor...0 uS/cm to 2000.0.mS/cm Resolution 0.05% of selected range Accuracy �0.5% of full scale of selected range at 25 Ranges: 4 ranges, with automatic range selection.
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Page 9 Calibration: Conductivity/TDS/Salinity Auto Standard Recognition 150uS/cm, 1413uS/cm, 2.76mS/cm, 12.88mS/cm, 58.0mS/cm Conductivity Span Range k=0.1 Sensor: k=0.075 to k=0.133 k=1.0 Sensor: k=0.75 to k=1.33 k=10 Sensor: k=7.5 to k=13.3 Temperature Use a reference thermometer. Temperature Sensor Offset -10.0 C to +10.0 Memory 3600 readings including date and time.
Page 10 WP-84 Menu Structure A detailed breakdown of the menu system of the WP-84 is shown below. This diagram provides a quick reference for the WP-84 menu functions. F1:Cal F1:Cond � � F3:Temp F4:ATC % F2:Notepad F1:Recall � � F2:Erase F3:Print F4:Prog...
Page 12 Conductivity (TDS/Salinity) Calibration To achieve accurate Conductivity/TDS/Salinity results, the WP-84 requires calibration to an allowable Conductivity standard. The TDS and Salinity values are derived from the Conductivity reading and do not require a separate calibration. The conductivity of a solution varies with temperature.
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Page 13 For plastic bodied k=1 and k=10 sensors, place the sensor into a sample of Conductivity standard, so that it is immersed at least to the vent hole in the white plastic cover. The white plastic cover MUST be in place for correct readings.
Page 14 Calibration Notes 1. A Zero calibration should be performed at least monthly. In low conductivity applications (where a zero error is particularly significant) a zero calibration may have to be done weekly. 2. A Standard calibration should be performed at least weekly. Of course, more frequent calibration will result in greater confidence in results.
Page 15 Temperature Calibration Calibration Procedure 1. Plug the Conductivity/Temperature sensor into the Sensor socket. 2. Place the sensor into a beaker of room temperature water, alongside a good quality mercury thermometer. Stir the sensor and the thermometer gently to ensure an even temperature throughout the beaker.
Page 16 Calibration Messages 1. If a temperature calibration has been successfully performed, the WP- 84 will display the following message and the offset value of the sensor. Calibrate OK Offset= 2. If a temperature calibration has failed, the WP-84 will display the following message and the failed offset value of the sensor.
<Enter first Conductivity reading> Temperature 1 <Enter first Temperature reading> Conductivity 2 <Enter second Conductivity reading> Temperature 2 <Enter second Temperature reading> ATC Slope =100*((10^((LOG10(B3/B1))/(B4-B2)))-1) A ready-made file can be downloaded from the Downloads section of the TPS Web Site : http://www.tps.com.au/downloads...
Page 19 Good Laboratory Practices (GLP) The WP-84 keeps a record of the date and time of the last Conductivity and Temperature calibrations as part of GLP guidelines. To recall GLP information on the display Select the GLP menu ( �...
Page 20 Cond Zero 0.00uS k=1.00 @ 2.76mS @ 00/00/00 00:00 @ 00/00/00 00:00 Note that these calibration values are still used if further measurements are taken without re-calibrating. Printing GLP Information to the RS232 Port The GLP information stored in the instrument’s memory can be sent to a printer or PC via the RS232 port.
Page 21 Notepad Function Recording Readings into the Notepad To record readings into the Notepad memory… 1. Press in normal display mode. The display should now look like this…(when in Conductivity mode) 2.76mS 25.0 12:00:00 2. Press to record the Conductivity/TDS/Salinity, Temperature, Date and Time into the notepad.
The display shows the word “Printing” until printing is completed. Note Downloading the recorded readings is as simple as clicking on the toolbar using the optional WinTPS RS232 Communication Software. This is part number 130086 and is available from TPS or your distributor.
Page 23 Automatic Data logging The WP-84 can automatically log records into the Notepad. First the logging period must be programmed, then automatic logging can be started and stopped as required. 1. Select the Program menu ( � F2:Notepad � F4:Prog.). 2.
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Page 24 Automatic Data logging, continued… If the WP-84 is sending records directly to the RS232 port, the display will look like this… 2.76mS 25.0 Sending 12:00:00 The WP-84 will beep each time a record is sent to the RS232 port. 8.
Page 25 RS232 Port 10.1 Setting the Baud Rate 1. Select the RS232 Set-up menu ( � F4:Setup � F4:Baud). 2. The available baud rates are listed on the display… F1:300 F2:1200 >F3:9600 F4:19200 The arrow shows the current selection. 3.
Page 26 10.5 Commands The following commands can be sent from a PC to the WP-84. Note that <cr> denotes carriage return and <lf> denotes a line feed. Action Command Notes Request current data ?D<cr> Returns the current Conductivity/ TDS/Salinity, Temperature, date and time from the WP-84.
Page 27 is the Conductivity/TDS/Salinity unit description, either “uS�”, “mS�”, “ppM” ,“ppK”, “%��” or “PSU” is the Temperature Data. Maximum 6 characters, right TTTTTT justified. is the Temperature unit description. is the date, month and year data. dd/mm/yy is the hours, minutes and seconds data. hh:mm:ss Notes When requested by a PC with the ?D or ?R commands (section 10.5),...
Page 28 10.8 Importing Data into Microsoft Excel The following procedure details the method for importing a WP-84 text � � data file into Microsoft Excel � � Start Microsoft Excel and select File � Open In the “Files of type:” pull-down box, choose “Text Files (*prn; *.txt; *.csv)”.
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TPS recommends the breaks be inserted. Press “Next >” after the column breaks have been inserted. Simply press “Finish” at step 3 of the Text Import Wizard. TPS recommends that the data format for each column be set once the data is in spreadsheet format.
Page 30 Battery Saver Function The WP-84 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 switched off for continuous use.
Page 31 Recharging the Battery symbol flashes when the battery drops below 5.60 volts. The battery should be recharged at this point. If the battery is not recharged, the WP-84 will switch itself off when the battery drops below 5.00 volts. To recharge the battery…...
Page 32 Clock Function 13.1 Setting the Clock 1. Select the Clock Set-up menu ( � F4:Setup � F2:Clock). 2. The display now shows the current date and time. The cursor starts at the day. For example… 31/12/10 12:00 ��:Set �...
Page 33 Selecting k=0.1 or k=10 Sensors The WP-84 automatically recognises a k=1.0 sensor. The WP-84 does not automatically recognise k=0.1 or k=10 sensors. When a k=0.1 or k=10 sensor is used, the WP-84 must be set to the correct k factor before use.
See section 14 if you wish to select a k=0.1 sensor. Instrument firmware version number. If you need to email, phone or fax TPS for any further technical assistance, the version number of your WP-84 firmware may of benefit to...
Error Message Possible Causes Remedy Factory Cal. The EEPROM chip which The unit must be returned to Failed contains the factory TPS for service. calibration information has failed. Handbook Memory Failed User calibration settings Re-calibrate the instrument. Calibration Lost have been lost or A full 2-point calibration will corrupted.
Page 36 17.2 Conductivity/TDS/Salinity Troubleshooting Symptom Possible Causes Remedy Unit fails to Calibration settings outside Initialise the unit. See section calibrate, even of allowable limits due to with new sensor. previous failed calibration. Unit attempts Sensor has Zero error. Thoroughly rinse sensor in Span calibration distilled water and allow to instead of Zero...
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Page 37 Conductivity/TDS/Salinity Troubleshooting, continued... Standard 8. White protective cover is The white protective cover calibration fails, not fitted or upside down. MUST be fitted for correct and k factor is readings. The vent hole must less than 0.075, be towards the cable end of 0.75 or 7.5, the sensor.
Page 38 17.3 Temperature Troubleshooting Symptom Possible Causes Remedy Displays “OVR C” 1. Faulty sensor. Fit new sensor. when sensor is 2. Faulty instrument. Return to factory for repair. plugged in. Temperature 1. Faulty connector. Check the connector and inaccurate and replace if necessary.
Page 39 Appendices 18.1 Care, Cleaning and Maintenance of Conductivity Sensors 21.1.1 Care of Conductivity sensors The conductivity section of the sensor supplied with your WP-81 consists of two platinum wires that are plated with a layer of “platinum-black”. This is quite a soft layer and is required for stable, accurate measurements.
18.2 Replatinising Conductivity Sensors There are several ways to replatinise Conductivity sensors. 1. The simplest way is to return the sensor to the TPS factory. We can fully clean the sensor, replatinise it and test all aspects of its performance.
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