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Summary of Contents for Extech Instruments PH210
- Page 1 User Guide Model PH210 pH / ORP / Temperature Meter 800.561.8187 information@itm.com www. .com...
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Page 2: Meter Description
Detachable probe for ease of use in a variety of measurement environments Automatic (via optional temperature probe) or Manual temperature compensation High impedance pH measurements User pH calibration ability DATA HOLD for freezing displayed reading Records MIN MAX readings Selectable function (pH or mV), Temperature measurement units (C/F), Auto power off disable/enable, and Manual solution temperature compensation Meter Description Measurement reading Solution temperature Unit of measure (pH or mV) Power/Escape button Function/Hold/Up arrow button Record (MIN/MAX)/Enter button Setting/down arrow button Battery compartment (rear of meter) pH or mV Electrode BNC connector input 10. Optional ATC probe input jack PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com... -
Page 3: Getting Started
This pH meter was factory calibrated by mV signals simulating an ideal pH Electrode in a 25°C (77°F) environment. An ideal electrode will produce 0.0mV at pH of 7.00 in ideal conditions. Electrodes are imperfect however and the temperature at which tests are taken is not always ideal. To maintain a high level of accuracy, and to accommodate any given application, choose a calibration method from the selections below: Basic Calibration (single point calibration): pH 7.00 Complete Calibration (two points): pH 7.00 then pH 4.00 or pH 7.00 then pH 10.00 The meter should be calibrated once per testing session. Calibration is performed using standard buffer solutions at room temperature 25°C (77°F). Calibration should always be performed using the pH 7.00 buffer first, followed by a second calibration buffer if desired. Select the pH 4.00 buffer for the second calibration if typical measurements will be lower than pH 7.00 or use a pH 10.00 buffer for the second calibration if typical measurements will be greater than pH 7.00. If the display shows “ERR”, clear the existing calibration data as discussed in the pH Calibration Procedure below, and perform the calibration again. pH Calibration Procedure Place the electrode in a buffer solution. Power the meter ON and simultaneously press and release the REC and HOLD buttons; ‘CAL’ appears in the lower left corner of the display. Use the up and down arrow buttons to scroll through the 4, 7, and 10 calibration points and the Clear function (CLr). Once the correct point is selected press the ENTER button. The reading will flash for several seconds and then END will appear. Calibrate to the other buffers in the same way. Note: If there is a deviation of more than 1 pH unit from the 4, 7, or 10 pH buffer, or if the electrode slope is low, the instrument will assume an error and abort the calibration (ERR will be displayed). In this case, clear the calibration data (see step 2 above) and perform the calibration again. If the problem persists, the electrode may require replacing. For multi‐point calibration, use the arrow buttons to scroll through the calibration points as described in step 2. Always calibrate with a pH 7 buffer first, and then follow with pH 4 or pH 10. Rinse electrode and probe with distilled water between calibration buffers. Press ESC at any time to abort the calibration and return to the normal operating mode. PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com... - Page 4 Rinse the pH electrode and temperature probe with distilled water. Place the electrode and temperature probe (if ATC is to be used) in the solution. Allow 30 seconds for the electrode and ATC probe to reach thermal equilibrium with the buffer solution. Refer to the Temperature Compensation section for more information on Automatic and Manual Temperature Compensation. After the measurement stabilizes, view the pH reading and temperature solution temperature on the display. When the test is complete rinse the electrode and probe with distilled water. Store electrodes and probes when not in use according to manufacturer’s requirements. Measuring mV (ORP: Oxidation Reduction Potential) Important: Electrodes and temperature probes should always be rinsed before and between samples with distilled water to remove all traces of storage solution, process media, or previous test solution. Connect the ORP electrode to the meter (BNC connection at bottom of meter). Optionally connect the temperature probe (Extech model 850188 only) to the jack at the bottom of the meter. This temperature probe is used for automatic temperature compensation (ATC) purposes. Manual compensation is possible as explained below. Turn the meter on using the POWER/ESC button. Press and hold the FUNCTION button to select mV units if necessary. The unit of measure appears on the LCD (mV or pH). To change the solution temperature units ( C / F) refer to the Temperature Units Selection section of this guide. Rinse the ORP electrode and ATC probe (if being used) with distilled or deionized water. Place the electrode and ATC probe (if being used) in the solution. Allow 30 seconds for the ORP electrode and ATC probe to reach thermal equilibrium with the buffer solution. Refer to the Temperature Compensation section for more information on Automatic and Manual Temperature Compensation. After the measurement stabilizes, view the ORP reading in mV on the main display. When the test is complete rinse the electrode and probe with distilled water. Store electrodes and probes when not in use according to manufacturer’s requirements. PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com...
- Page 5 The PH210 automatically compensates (ATC) for solution temperature deviations when the Model 850188 temperature probe (inserted at bottom of meter) is placed in the measurement solution. The temperature of a solution is displayed on the meter’s lower LCD line. To manually compensate for solution temperature deviations a separate thermometer must be placed in the solution to monitor the solution’s temperature; then proceed as follows: Press and hold the SETTING button for 5 seconds. The display will show noATC. Press ENTER and noATC will flash (indicating the automatic compensation is switched OFF and Manual Temperature Compensation is active). Note that when noATC is not flashing Automatic Temperature Compensation mode is active. Use the up and down buttons to manually adjust the temperature value to match the solution temperature (as determined by the solution thermometer). Once the temperature is programmed, press ENTER to save the data and then press ESC to return to the normal operating mode. If the solution temperature changes, the manual temperature compensation procedure must be repeated. Temperature Units (C/F) Selection To change the temperature units ( C / F): Power on the device Press and hold the Setting button for 5 seconds, until the Setting mode is accessed Press the Setting button again; either an F or a C will be displayed Use the up arrow button to select the desired unit of measure for temperature solution Press ENTER to save the setting Press ESC to return to the normal mode of operation Automatic Power OFF Enable/Disable To conserve battery power, the instrument automatically shuts off after approximately 10 minutes of inactivity. To disable or enable this feature, follow the steps below: Power on the device Press and hold the SETTING button for 5 seconds until the Setting mode is accessed Use the SETTING button to step to the screen that shows either OFF YES or OFF NO Use the up arrow button to select YES (Auto Power OFF active) or NO (Auto Power OFF not active) Press the ENTER key to save the setting and to return to the normal operating mode PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com...
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Page 6: Specifications
± 1999mV Note: Accuracy does not include pH buffer temperature coefficient Automatic Temperature 0 to 65 C (32 to 149 F) Compensation (ATC) range Manual Temperature Compensation 0 to 100 C (32 to 212 F) Adjustment range Power 9 volt alkaline battery Display LCD display for simultaneous pH or mV and temperature readings plus programming menu parameters and icons Operating Temperature and Relative 0 to 50 C (32 to 122 F); <80% RH Humidity pH Calibration points 4.00, 7.00, 10.00 (1, 2, or 3 point calibration can be performed) Auto Power OFF 10 minutes from last key‐press (can be disabled) Low Battery Indication Battery display icon will flash when battery requires replacing Dimensions / Weight 135 x 60 x 33mm (5.3 x 2.4 x 1.3”); 200g (7.1 oz.) PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com... -
Page 7: Battery Replacement
Electrode Cleaning The type of electrode coating that occurs over time will determine the cleaning method. Soft coatings can be removed by vigorous stirring or by using a squirt bottle. Organic chemical coating (hard coatings) should be chemically removed. Only in extreme cases should the bulb be cleaned mechanically. PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com... - Page 8 Read solution for dry bulb below: Dry Bulb Long term storage without Soak electrode tip in wetting cap filled wetting with 1ml 7.00 buffer for 24 to 48 hours Static Charge Wiping electrodes Rinse electrode in 7.0 buffer and blot. Do no wipe electrode. Same readings in Cracked or broken bulb Replace electrode. Use bulb guard. different buffers and Avoid plunging electrode to bottom of samples container and spinning bars. Wetting cap will protect bulb between tests. Erratic LCD display Samples have low ionic For each 50 ml of sample add 1 drop strength (lacks salt); e.g. (50uL) of SAT. KCl (No alteration in pH distilled, de‐ionized, boiled, will occur using inert KCl). lake water (high pressure) Copyright © 2014 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form www.extech.com PH210-en-GB_v1.3 11/14 800.561.8187 information@itm.com www. .com...
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