pH计说明书

EnglishThermo Scientific Orion Star A211 Benchtop pH MeterpHPreparation Instruction SheetOrion Star A211 BenchtopPower Source1. Power adapter (included with meter)a. Select the appropriate wall socket plug plate. b Slide off the clear plastic cover from the plug plate.c. Slide the plug plate into the groove on the back of the power adapter.d. Connect the power adapter to the meter and power outlet.2. Batteries (sold separately)a. Select four AA alkaline batteries. b. Confirm that the meter is powered off.c. Remove the battery compartment cover – push down on the battery compartment tab and lift the battery cover up. d. Orientate the batteries as shown in the battery compartment housing and insert batteries.e. Replace the battery compartment cover.Electrodes and Other Connections1. Prepare the pH electrode and any other applicable electrodes according to the directions in the electrode user guide. 2. Connect the appropriate items as labeled on the meter and as shown in the figure on the right:Push down on tab and lift the battery coverGroundDO/RDOATC/CONRef.BNCPowerStirrerUSBRS232Electrode ArmThe electrode arm can be attached to either side of the meter. Unpack the electrode arm and base. Choose the side of the meter to attach the arm. Find a clean surface and turn the meter over. Release the existing screw from the back of the meter. Align the electrode arm base with the circles at the bottom of the meter. The metal post on the electrode arm base should be on the same side as the display. Take the screw that was removed and use it to secure the electrode arm base to the meter. Turn the meter over. Place the hole at the base of the electrode arm onto the metal post on the electrode arm base.For additional information on meter setup and operation, refer to the reference guide. The reference guide is on the included CD and available at www.thermoscientific.com/water.Orion Star A211 Benchtop pH MetersDisplay InformationDisplay IconDescriptionShown when the meter is running on AC power.Shown when the meter has batteries installed. Indicates data is being sent to a computer or printer.Indicates data is being sent to the data log.Shown when an alarm is set and the alarm value is reached.Indicates the meter is set to be interfaced with a printer or computer viathe RS232 port.Indicates the meter is set to be interfaced with a printer or computer via the USB port.Displays the time and date entered in the setup menu.C25.0˚ATCHOLDDisplays the current temperature based on the temperature probe reading orentered temperature value. Shows the origin of the temperature as MAN(entered temperature) or ATC (temperature probe). Shown when is pressed and the displayed measurement is frozen. Indicates a calibration was successfully completed.Indicates the pH electrode condition as good (two bars), fair (one bar) or bad(slash through it), based on the last saved calibration and measurement stability. M100Indicates a method is in use and the number of the method being used.Indicates the type of measurement and determines the type of calibrationthat will be performed.Specifies the stability of the electrode as stabilizing or ready.Shown when the meter is in AUTO-READ mode. The icon will blink whilethe reading is stabilizing and stop blinking when the reading is stable and themeasurement is locked on the display.pHready7.000 pH0.0mVBUFFERS: 1.68, …Displays the measurement value based on the last saved calibration and currentelectrode reading. Units are shown to the right of the value.Shows the raw millivolt reading of the electrode.Shows the buffer values used for the last saved calibration.Shows the operator assigned sample ID number. Shows the operator assigned user ID number.calsample IDDisplays the action that will be performed when f1 is pressed.Displays the action that will be performed when f2 is pressed.Displays the action that will be performed when f3 is pressed.setup2

Keypad Display Information

Press the f1, f2 and f3 function keys to perform the action shown above each key on the display.

Press to turn the meter on.

When the meter is on, press and quickly release to turn the display backlight on or off or hold down to turn the meter off.

In the measurement mode, press to take a measurement.

In the setup, calibration and other menus, press to escape the current menu and return to the measurement mode.

In the measurement mode, press to enter the setup menu.

In the setup, calibration and other menus, press to scroll up through a list of options.In the continuous measurement mode, press to freeze the displayed measurement and press again to unfreeze the measurement.

In the setup, calibration and other menus, press to scroll left through a list of options. In the measurement mode, press to change the displayed measurement mode. Options are pH, mV, RmV (relative mV) and ORP.

In the setup, calibration and other menus, press to scroll right through a list of options.In the measurement mode, press to log or print a measurement. In the setup, calibration and other menus, press to scroll down through a list of options.Press to view the data log and calibration log.

Press to start or stop the stirrer probe.

Keypad

1. Press to power the meter on. When the meter is on, press and quickly release to turn the

backlight on or off or press and hold for about three seconds to power the meter off.2. Press to exit any meter function and return to the measurement mode. 3. The f1, f2, and f3 function keys perform a variety of meter operations. The menu-specific operation is

shown above each key. For example, press f1 in the measurement mode to start a calibration.4. The , , or keys are used as navigation keys (up, right, down, left) when selecting from a fixed list or grid of meter options. In the measurement mode, these keys are used to access the setup menu, change the measurement mode, manually log or print a measurement and hold (freeze) a displayed measurement. 5. Press to turn on or off the stirrer probe (Cat. No. 096019). 6. Press to access the calibration log and data log.3

pH Calibration

One to five pH buffers can be used for calibration. Always use fresh pH buffers and select buffers that bracket the sample pH and are one to four pH units apart. Prepare the pH electrode according to the instructions in the electrode use guide. Connect the pH electrode and any other electrodes to be used (ATC probe, stirrer probe, reference electrode) to the meter. Power on the meter and set the measurement mode to pH.1. In the measurement mode, press f1 (cal).

2. Rinse the pH electrode and any other electrodes in use with distilled water, blot dry with a lint-free tissue and place into the pH buffer.3. When the electrode and buffer are ready, press f3 (start).

4. Wait for the pH value on the meter to stabilize and stop flashing and perform one of the following actions:a. Press f2 (accept) to accept the displayed pH value.

b. Press f3 (edit) to access the numeric entry screen and edit the pH buffer value.i. Press , , or to highlight a number, decimal point or negative sign; press f3 (enter) to select the highlighted item and repeat until the buffer value at the measured temperature is shown above the numeric entry screen. ii. Press f2 (done) to exit the numeric entry screen. iii. Press f2 (accept) to accept the entered pH value.

5. Press f2 (next) to proceed to the next buffer and repeat steps 2 through 4 or press f3 (cal done) to save and end the calibration. If five buffers are used, the calibration will save and end once the fifth buffer value is accepted.a. If a one point calibration is performed, press f2 (accept) to accept the displayed slope value or press f3 (edit) to access the numeric entry screen, enter the slope value and press f2 (accept). 6. The meter will display the calibration summary including the average slope. Press f1 (meas) to export the data to the calibration log or press f2 (print) to export the data to the calibration log and a printer or computer. The meter will automatically proceed to the measurement mode.

4

Measurement

Press while taking a measurement in the continuous measurement mode to freeze the display and press a second time to unfreeze the display and continue the measurement. Press while taking a measurement to manually export the measurement to the data log, if the data log is enabled in the setup menu.

1. Rinse the pH electrode and any other electrodes in use with distilled water, blot dry with a lint-free tissue and place into the sample.2. If the stirrer probe is in use, press to turn on the stirrer probe. 3. Start the measurement and wait for it to stabilize.

a. If the meter is in AUTO-READ mode (default setting), press to start the measurement. When the

icon stops flashing, record the pH and temperature of the sample. Press again to start a new measurement.b. If the meter is in continuous mode, the meter will immediately start taking a measurement and update the display whenever the measurement changes. Wait for the display to show ready and record the pH and temperature of the sample.c. If the meter is in timed mode, the meter will log measurements at the preselected time interval, regardless of the measurement stability. The meter will update the display whenever the

measurement changes, so the pH and temperature of the sample can be recorded when the display shows ready.4. If the stirrer probe is in use, press to turn off the stirrer probe.5. Remove the electrode from the sample, rinse with distilled water, blot dry and place into the next sample.6. Repeat steps 2 through 5 for all samples.

7. When all samples have been measured, store the electrode according to its user guide.

5

Setup Menu

Navigating the Setup Menu1. In the measurement mode, press to enter the main setup menu. , or to scroll through the main setup menu options. Press f3 (select) to 2. Press , select a main setup menu option. 3. Press or to scroll through setup submenu options. Press f3 (select) to select a setup submenu option.4. Perform the appropriate actions to set the desired parameter in the setup submenus.

a. To select a value from a list of options, press f3 (select) to set the value.

or to highlight the desired value and press b. To enter a numeric value, use the numeric entry screen.

i. Select the value to be entered by pressing f3 (select) or f3 (edit). The numeric entry screen will popup on the display.ii. Press , , or to highlight a number, decimal place or negative sign; press f3 (enter) to select the highlighted item and repeat until the desired value is shown on the top of the numeric entry screen.iii. Press f2 (done) to save the value and exit the numeric entry screen.5. Press f1 (back) and then to return to the measurement mode at any time.Setup Menu Overview

pH ChannelMethodMode & Settingst Measure Modet󰀁Read Typet󰀁Resolutiont󰀁Buffer Groupt󰀁Stabilityt󰀁Averagingt󰀁Alarm Settingst󰀁Sample ID Settingst Export Datat Data Logt Date / Timet Languaget Key Press Beept Alarm Beept Stirrert Contrastt Auto Shut Offt User ID.Log Viewt Data Logt Calibration LogDiagnosticst Meter Self Testt Factory Resett About MeterTemperaturet󰀁Manual Temp Valuet󰀁Temperature Unitt󰀁Temperature Calibration6

pH Buffer Group Selection

The selected buffer group allows for the automatic recognition of certain pH buffers during a pH calibration. The USA buffer group includes pH 1.68, 4.01, 7.00, 10.01 and 12.46 buffers and the DIN buffer group includes pH 1.68, 4.01, 6.86, and 9.18 buffers.1. In the measurement mode, press 2. Press , , or to highlight pH Channel and press f3 (select).

3. Press or to highlight Mode and Settings and press f3 (select).4. Press or to highlight Buffer Group and press f3 (select).5. Press or keys to highlight USA or DIN and press f3 (select).

6. Press to return to the measurement mode.Read Type Selection

1. In the measurement mode, press . 2. Press , , or to highlight pH Channel and press f3 (select).

3. Press or to highlight Mode and Settings and press f3 (select).4. Press or to highlight Read Type and press f3 (select).

5. Press or to highlight Auto, Continuous or Timed and press f3 (select).

a. If Timed is selected and the time interval needs to be changed – highlight Timed; press to highlight hours (HH), minutes (MM) or seconds (SS); press f3 (edit) to access the numeric entry screen; use the numeric entry screen to change the values and press f1 (back) when the time interval is correct. 6. Press to return to the measurement mode.7

Viewing the Calibration Log

1. In the measurement mode, press 2. Press 3. Press or or . to highlight Calibration Log and press f2 (accept). to highlight pH – Channel and press f2 (select).

to highlight pH, RmV, ORP or Temperature as the calibration type and 4. Press or press f2 (select).5. The meter will display a list of calibrations for the selected channel and calibration type. The list shows the sequential number of the calibration and the date and time it was saved (07/01/2011 12:45). or to highlight a specific calibration and press 6. To view the calibration data, press f2 (select). Press f2 (print) to print the calibration, press f3 (info) to view the electrode slope between calibration points or press f1 (back) to return to the list of calibrations.7. Press to return to the measurement mode. Viewing the Data Log

1. In the measurement mode, press 2. Press or . to highlight Data Log and press (accept).

3. The meter will display a list of the data points. The list shows the sequential number of the data point and the date and time the data point was saved (07/01/2011 12:45). or to highlight the data 4. To view the measurement information for an individual data point, press point and press f2 (select). Press f2 (print) to print the data point or press f1 (back) to return to the list of data points.5. Press to return to the measurement mode. Water Analysis Instruments www.thermoscientific.com/waterNorth America 166 Cummings Center Beverly, MA 01915 USA Toll Free: 1-800-225-1480 Tel: 1-978-232-6000 info.water@thermo.com©2011 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are the property of Thermo Fisher Scientific Inc. & its subsidiaries.

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