Related Manuals for Accumet AP85
Summary of Contents for Accumet AP85
- Page 1 OPERATING INSTRUCTIONS accumet 13636AP85 ® AP85 Portable Waterproof pH/Conductivity Meter ISO 9001 v e n d o r C E R T I F I E D 1/02...
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Page 2: Table Of Contents
Table of Contents 6.5 Program 4.0: Resetting to factory default settings (pH) ..........32 1. Introduction....................4 6.6 Program 5.0: Viewing previous conductivity/TDS calibration data......33 2. Display and keypad functions ...............5-6 6.7 Program 6.0: Viewing conductivity/TDS probe data (effective cell constant) ...34 2.1 Display............................5 6.8 Program 7.0: Conductivity/TDS measurement configuration.........35-38 2.2 Keypad .............................6... -
Page 3: Introduction
1. Introduction 2. Display and Keypad Functions Thank you for selecting an accumet AP85 meter. This portable meter is a ® microprocessor-based instrument that measures pH, conductivity, Total Dissolved Display Solids (TDS) and temperature. Your meter has many user-friendly features, all of which are accessible through the membrane keypad. -
Page 4: Keypad
Keypad 3. Preparation The large membrane keypad makes the instrument easy to use. Each button, when pressed, has a corresponding graphic indicator on the LCD. Inserting the Batteries ON/OFF....Powers and shuts off the meter. Four AAA batteries are included with your meter. HOLD ....Freezes the measured reading. -
Page 5: Probe Information
Probe information Slide the BNC connector of the probe over the BNC connector socket on the Your AP85 meter includes two probes: meter. Make sure the slots of the connector are in line with the posts of the • single junction, epoxy body combination pH electrode with BNC connector socket. -
Page 6: Calibration
pH calibration 4. Calibration We recommend that you calibrate at least two buffers that bracket (one above and one below) your expected sample range. Important Information on Meter Calibration Preparing for pH calibration When you recalibrate your meter, old calibration points are replaced on a “point This meter can calibrate up to 5 pH buffer values to ensure accuracy across the entire by point”... -
Page 7: Conductivity And Tds Calibration
Conductivity and TDS calibration Press CAL/MEAS to enter pH calibra- tion mode. The CAL indicator lights. You can calibrate up to 5 conductivity or TDS points, using a maximum of one point The primary display will show the per range (listed below): measured reading while the smaller secondary display will indicate the Range... - Page 8 To calibrate conductivity: Calibrating for TDS directly If necessary, press the MODE key to The factory default setting for TDS conversion factor is 0.5. If your solution has a select conductivity mode. different TDS factor, you can improve calibration accuracy by setting the TDS factor prior to calibration.
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Page 9: Temperature Calibration
Temperature calibration 5. Measurement The temperature sensor (located in the conductivity cell) is factory calibrated. Calibrate your sensor only if you suspect sensor drift that may have occurred Taking pH Measurements over a long period of time or if you have a replacement probe. To take readings: Temperature calibration Rinse the pH electrode with deionized or distilled water before use to remove any... -
Page 10: Taking Conductivity Or Tds Measurements
Taking Conductivity or TDS Measurements HOLD function To take readings: This feature lets you freeze your reading for a delayed observation. HOLD can be used any time when in MEAS mode. Rinse the probe with deionized or distilled water before use to remove any impurities adhering to the probe body. -
Page 11: Using Manual Ranging Function: Conductivity/Tds
Selecting manual temperature compensation: Using manual ranging function: conductivity/TDS conductivity or TDS When shipped from the factory, your meter automatically selects the range in which your readings appear. The manual ranging function lets you select the specific range For manual temperature compensation in conductivity or TDS mode, you must: in which you want to work. -
Page 12: Selecting The Manual Temperature Compensation Value
Selecting the manual temperature compensation value 6. Advanced set up functions To use manual temperature compensation, you need to enter the temperature The advanced set up mode lets you customize your value of your process into the meter. This is the value at which readings will meter’s preferences and defaults. - Page 13 Sub groups available from conductivity/TDS measurement mode Advanced set-up mode detailed overview P5.0: Viewing Con./TDS calibration data Press the SETUP key to enter Set up mode. Press the keys to scroll through sub groups. P5.1 View conductivity/TDS calibration data R1 R1 = 0.00-19.99 µS / 0.00-9.99 ppm Sub groups available from pH measurement mode P5.2 View conductivity/TDS calibration data R2...
- Page 14 P1.0: Viewing previous pH calibration data P2.0: Viewing pH electrode data This mode lets you recall previous pH calibration data, which lets you know at which Program 2 has two “view only”options that lets you check the pH electrode points this meter was previously calibrated. This is a “view only” mode. parameters for diagnostic purposes.
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Page 15: P3.2 Selecting Number Of Ph Calibration Points
P3.0: pH measurement configuration P3.2: Selecting number of pH calibration points Program P3.2 lets you select the number of pH calibration points the meter will use P3.1: READY indicator and auto endpoint function in calibration mode: 2, 3, 4, or 5. The meter will automatically exit calibration mode after you have calibrated to your selected number of points. -
Page 16: P3.4 Selecting °C Or °F
P3.3: Selecting NIST or USA buffer sets P3.4 Selecting °C or °F Program P3.3 lets you select between the following calibration buffer sets: This meter lets you select between °C and °F units for temperature readings. USA: pH 1.68, 4.01, 7.00, 10.00, 12.45 NIST: pH 1.68, 4.01, 6.86, 9.18, 12.45 From measurement mode Factory default is the USA buffer set. - Page 17 P4.0: Resetting to factory default settings (pH) P5.0: Viewing previous conductivity/TDS calibration data This program lets you reset all pH parameters to factory default settings. This This mode lets you recall previous conductivity or TDS calibration data, which lets clears all calibration data any other pH setup functions you might have changed. you know at which points this meter was previously calibrated.
- Page 18 P6.0: Viewing conductivity/TDS probe data P7.0: Conductivity/TDS measurement configuration Program 6 has five "view only" options that let you check your conductivity/TDS P7.1: READY indicator and auto endpoint function probe’s parameters for diagnostic purposes. These options show you the effective cell constant for each range.
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Page 19: P7.2 Selecting °C Or °F
P7.2 Selecting °C or °F P7.3 Selecting Automatic or Manual Temperature Compensation This meter lets you select between °C and °F units for temperature readings. This feature lets you select between Automatic Temperature Compensation (ATC) and Manual Temperature Compensation for conductivity by deactivating the temperature sensor in the conductivity/TDS probe. -
Page 20: P7.4 Setting The Tds Factor
P7.4 Setting the TDS factor P8.0: Temperature Settings As the concentration of dissolved salts in solution increases, the conductivity P8.1 Selecting the temperature coefficient increases. This relationship varies from salt to salt and is roughly linear over a given range for a given salt. The TDS conversion factor is used by the meter to The temperature coefficient is the amount of change in conductivity per degree of convert conductivity to TDS. -
Page 21: P8.2 Selecting The Normalization Temperature
P9.0: Resetting to factory default settings (conductivity/TDS) P8.2 Selecting the normalization temperature 6.10 Your meter will normalize its conductivity measurements to a standard temperature This program lets you reset all conductivity parameters to factory default settings. that you can select. You can adjust the normalization temperature from 15 to 30°C This clears all calibration data any other conductivity setup functions you might (59 to 86°F). -
Page 22: Probe Care And Maintenance
pH electrode activation (for glass bodied electrodes only) 7. Probe Care and Maintenance WARNING: Only qualified persons proficient with the safe handling of dangerous chemicals should perform the procedure below. Provide proper containers, fume pH electrode care hoods, ventilation, and waste disposal. Safety goggles and protective clothing must be worn while performing this procedure. -
Page 23: Troubleshooting
9. Error Messages 8. Troubleshooting Problem Cause Solution Indicates Cause Solution Display Power on but a) Batteries not in place. a) Check that batteries are in no display place and making good Unrecognized input Wrong input in Release key. Select contact. -
Page 24: Specifications
10. Specifications Mode Temperature Conductivity 0 to 19.99 µS 0.00 to 9.99 ppm -10.0 to 0 to 199.9 µS 10.0 to 99.9 ppm –2.00 to Range 110.0°C / 0 to 1999 µS 100 to 999 ppm 16.00 pH 14.0 to 230.0°F 0 to 19.99 mS 1.00 to 9.99 ppt 0 to 199.9 mS... -
Page 25: Appendix 2: Calculating Tds Conversion Factors
12. Appendix 2: Calculating TDS Conversion Factors 13. Appendix 3: Calculating Temperature Coefficients You can calibrate your meter using TDS calibration standard solutions. The calibra- To determine the temperature coefficient of your sample solution use this formula: tion standard only needs to give the TDS value at a standard temperature such as 25°C. -
Page 26: Appendix 4: Meter Factory Default Settings
15. Appendix 4: Meter factory default settings Resetting the meter to factory default settings clears all calibration data and most other setup functions you might have changed. The following settings will remain as you have set them: • temperature unit of measure (°C or °F) •...
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