Thermo Scientific STARA3295, STARA3290 User Manual

English

Thermo Scientiﬁc Orion Star A329 Portable pH/ISE/Conductivity/RDO/DO Meter

pH / ISE /

COND /

RDO / DO

Instruction Sheet

Preparation

Power Source

1. Power adapter (sold separately) 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 (included with meter) a. Select four AA alkaline batteries. b. Conﬁrm that the meter is powered off. c. Remove the battery compartment cover – loosen the

screws holding the battery cover, release the top portion of the battery cover from the meter (use a coin or your ﬁnger) and release the bottom portion of the battery cover.

d. Orientate the batteries as shown in the battery

compartment housing and insert batteries.

e. Replace the battery compartment cover and screws.

Electrodes and Other Connections

Orion Star A329 Portable

Use coin or ﬁnger to lift.

Remove screws

DO/ RDO

POWER

1. Prepare the pH electrode, ion selective electrode (ISE), conductivity cell, RDO optical dissolved oxygen probe, polarographic dissolved oxygen probe 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 above:

USB

ATC/ COND

REF

RS232

BNC

Orion Star A329 Portable pH/ISE/Conductivity/RDO/DO Meters

Display Information

Display Icon

25.0˚

ATC

HOLD

100

ready

7.000 pH

0.0mV

BUFFERS: 1.68, …

STANDARDS:

0.10 1.0 10

Cell Constant : 0.4750

Auto Baro Press : 757.3

Salt: 0.0

cal

sample ID

channel

Description

Shown 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 via the 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.

Displays the current temperature based on the temperature probe reading or entered 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 or ion selective electrode condition as good (two bars), fair (one bar) or bad (slash through it), based on the last saved calibration and measurement stability.

Indicates a method is in use and the number of the method being used.

Indicates the type of measurement and determines the type of calibration that 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 while the reading is stabilizing and stop blinking when the reading is stable and the measurement is locked on the display.

Displays the measurement value based on the last saved calibration and current electrode reading. Units are shown to the right of the value.

Shows the raw millivolt reading of the electrode. pH and ISE modes only.

Shows the buffer values used for the last saved calibration. pH mode only.

Shows the standard values used for the last saved calibration. ISE mode only.

Shows the cell constant in use from last saved calibration. Conductivity/TDS/Salinity/Resistivity

modes only.

Shows the barometric pressure measured by the meter (Auto) or entered by operator (Man.) and used to correct dissolved oxygen measurements. RDO/DO modes only.

Displays the salinity correction factor used to correct dissolved oxygen measurements. RDO/DO modes only.

Shows the operator assigned sample ID number.

Shows the operator assigned user ID number.

Displays 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.

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 single channel measurement modes, press to change the displayed measurement mode. Op tions for channel 1 are pH, mV, RmV (relative mV ), ORP and ISE. Op tions for channel 2 are Cond (conductivity), TDS, Salinity and Res (resistivit y). Options for channel 3 are %sat (dissolved oxygen in percent saturation), mg/L (dissolved oxygen in milligrams per liter) or °C (probe membrane temperature).

In the setup, calibration and other menus, press to scroll right through a list of options.

Orion Star A329 Portable pH/ISE/Conductivity/RDO/DO Meters

In the measurement mode, press to log or print a measurement.

In the setup, calibr ation and other menus, press to scr oll down through a lis t of options.

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

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.

for about three seconds to power the meter off.

Orion Star A329 Portable pH/ISE/Conductivity/RDO/DO Meters

pH and ISE 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, reference electrode) to the meter. Power on the meter and set the measurement mode to pH.

One to ﬁve standards can be used for ISE calibration. If more than one standard is used to calibration, start with the lowest concentration standard and work up to the highest concentration standard last. Always use fresh standards. Select standards that bracket the sample concentration and are a decade apart in concentration. Prepare the ion selective electrode according to the instructions in the electrode use guide. Connect the ISE and any other electrodes to be used (ATC probe, reference electrode) to the meter. Power on the meter and set the measurement mode to ISE.

1. In the measurement mode, press f1 (cal). Press

2. Rinse the pH or ion selective electrode and any other electrodes in use with distilled water, blot dry with a lint-free tissue and place into the pH buffer or ISE standard.

3. When the electrode and buffer or standard are ready, press f3 (start).

4. Wait for the pH or concentration value on the meter to stabilize and stop ﬂashing and perform one of the following actions:

a. Press f2 (accept) to accept the displayed value.

b. Press f3 (edit) to access the numeric entry screen and edit the value.

i. Press

f3 (enter) to select the highlighted item and repeat until the 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 value.

5. Press f2 (next) to proceed to the next buffer or standard and repeat steps 2 through 4 or press f3 (cal done) to save and end the calibration. If ﬁve buffers or standards are used, the calibration will save and end once the ﬁfth 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.

, , or to highlight a number, decimal point or negative sign; press

or to highlight pH-Channel and press f2 (select).

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