Science Learning Center Chemistry Pre-laboratory Tutorials Written By Patrick Herklotz.

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Presentation transcript:

Science Learning Center Chemistry Pre-laboratory Tutorials Written By Patrick Herklotz

Menu Options: Click on Links To… Replay Continue Step # Location of Written Instructions Link: Go to Preceding Slide Link: Watch Current Slide Animations Again Link: Advance to Next Slide Instructions Previous Slide

Tutorial 4 Calibrating and Operating the Vernier pH Sensor

Previous Slide Replay Continue Tutorial 4 Calibrating and Operating the Vernier pH Sensor

Top View Previous Slide Replay Continue VERNIER LabPro Quick Setup Start/Stop Transfer Vernier Power Supply STAT PLOT F1 TBLSET F2 FORNAT F3CALC F4 TABLE F5 Alpha 2ND Mode DEL STAT PRGM COS ( X,T,O,N APPS MATH (-) x + - ÷ Enter X -1 X2X2 LOG LN STO> ON SIN, VARS CLEAR TAN > ) Step 1: Assemble the LabPro Calculator as explained in Tutorial 1

Top View Previous Slide Replay Continue VERNIER LabPro Quick Setup Start/Stop Transfer Vernier Power Supply STAT PLOT F1 TBLSET F2 FORNAT F3CALC F4 TABLE F5 Alpha 2ND Mode DEL STAT PRGM COS ( X,T,O,N APPS MATH (-) x + - ÷ Enter X -1 X2X2 LOG LN STO> ON SIN, VARS CLEAR TAN > ) Step 1: Assemble the LabPro Calculator as explained in Tutorial 1.

Top View Previous Slide Replay Continue VERNIER LabPro Quick Setup Start/Stop Transfer Vernier Power Supply STAT PLOT F1 TBLSET F2 FORNAT F3CALC F4 TABLE F5 Alpha 2ND Mode DEL STAT PRGM COS ( X,T,O,N APPS MATH (-) x + - ÷ Enter X -1 X2X2 LOG LN STO> ON SIN, VARS CLEAR TAN > ) Side View Channel 1Channel 2Channel 3Channel 4 Step 2: Obtain the pH sensor and plug it into channel 1. Run the DataMate program by selecting it from the APPS menu in order to allow the calculator to detect the pH sensor.

pH SENSOR Top View Previous Slide Replay Continue VERNIER LabPro Quick Setup Start/Stop Transfer Vernier Power Supply STAT PLOT F1 TBLSET F2 FORNAT F3CALC F4 TABLE F5 Alpha 2ND Mode DEL STAT PRGM COS ( X,T,O,N APPS MATH (-) x + - ÷ Enter X -1 X2X2 LOG LN STO> ON SIN, VARS CLEAR TAN > ) Step 2: Obtain the pH sensor and plug it into channel 1. Run the DataMate program by selecting it from the APPS menu in order to allow the calculator to detect the pH sensor. Side View Channel 1Channel 2Channel 3Channel 4 Channel 1 Port click VERNIER SOFTWARE DATAMATE (VER 1.15) ROM 6.27 (C)2003 Checking Sensors Mode: TIME GRAPH-180 1: SETUP 4: ANALYZE 2: START 5: TOOLS 3: GRAPH 6: QUIT CH 1: Absorbance Mode: TIME GRAPH-180 1: SETUP 4: ANALYZE 2: START 5: TOOLS 3: GRAPH 6: QUIT

Previous Slide Replay Continue Step 3: In the default DataMate program screen, press the 1 key (SETUP). In the next menu, press 2 (CALIBRATE) once the cursor triangle is to the left of CH 1. In the third menu, press the 2 key (CALIBRATE NOW). Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments pH SENSOR CH 1: PH Mode: TIME GRAPH-180 1: SETUP4: ANALYZE 2: START5: TOOLS 3: GRAPH6: QUIT

Previous Slide Replay Continue Step 3: In the default DataMate program screen, press the 1 key (SETUP). In the next menu, press 2 (CALIBRATE) once the cursor triangle is to the left of CH 1. In the third menu, press the 2 key (CALIBRATE NOW). Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments pH SENSOR CH 1: PH Mode: TIME GRAPH-180 1: SETUP4: ANALYZE 2: START5: TOOLS 3: GRAPH6: QUIT CH 1: PH CH 2: CH 3: CH 4: DIG1: DIG2: MODE: TIME GRAPH-900 1:OK 3:ZERO 2:CALIBRATE 4:SAVE/LOAD CALIBRATION PH CALIBRATION: LINEAR SLOPE INT 0 4 1:OK 2:CALIBRATE NOW 3:MANUAL ENTRY CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2:

- Previous Slide Replay Continue Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments pH SENSOR ml CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: Step 4: Remove the pH sensor from the solution bottle that keeps it moist. Thoroughly rinse the pH electrode with DI water over a beaker. Always perform this step before measuring the pH of a new solution. Use a Chemwipe to gently rub off strong bases from the sensor’s electrode after rinsing it with DI water.

- Previous Slide Replay Continue Step 4: Remove the pH sensor from the solution bottle that keeps it moist. Thoroughly rinse the pH electrode with DI water over a beaker. Always perform this step before measuring the pH of a new solution. Use a Chemwipe to gently rub off strong bases from the sensor’s electrode after rinsing it with DI water. Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: pH SENSOR ml Rinse pH electrode with DI water from lab squeeze bottles.

- Previous Slide Replay Continue Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments pH SENSOR ml Step 5: Place the sensor electrode into a buffer that has a pH of 4. Allow the voltage to stabilize to a reasonably constant value out to the hundredth place past the decimal. This may take seconds. Once this occurs, press the ENTER key. On the next screen, press the 4 key to input the pH of this buffer into the calculators memory. Press the ENTER Key again. CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2:

- Previous Slide Replay Continue Step 5: Place the sensor electrode into a buffer that has a pH of 4. Allow the voltage to stabilize to a reasonably constant value out to the hundredth place past the decimal. This may take seconds. Once this occurs, press the ENTER key. On the next screen, press the 4 key to input the pH of this buffer into the calculators memory. Press the ENTER Key again. Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: pH SENSOR ml ENTER VALUE ? 4 CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2:

- Previous Slide Replay Continue Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments pH SENSOR ml Step 6: Rinse the electrode with DI water. Next, place the pH electrode into a buffer that has a pH of 7. Allow the voltage to stabilize to a reasonably constant value out to the hundredths place past the decimal. Once this occurs, press the ENTER key. On the next screen, press the 7 key to input the pH of this buffer into the calculators memory. Press ENTER to complete the calibrating process. CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2:

- Previous Slide Replay Continue Step 6: Rinse the electrode with DI water. Next, place the pH electrode into a buffer that has a pH of 7. Allow the voltage to stabilize to a reasonably constant value out to the hundredths place past the decimal. Once this occurs, press the ENTER key. On the next screen, press the 7 key to input the pH of this buffer into the calculators memory. Press ENTER to complete the calibrating process. Power Supply LabPro Calculator Screen TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: pH SENSOR ENTER VALUE ? 7 CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: CALIBRATION PH CALIBRATION: LINEAR SLOPE INT :OK 2:CALIBRATE NOW 3:MANUAL ENTRY The pH sensor is now calibrated! ml

- Previous Slide Replay Continue Step 7: Press the 1 key [OK] to return to the Settings menu. Press the 1 key [OK] again to return to the main menu. Power Supply TI-84 Silver Edition Texas Instruments pH SENSOR ml CALIBRATION PH CALIBRATION: LINEAR SLOPE INT :OK 2:CALIBRATE NOW 3:MANUAL ENTRY

- Previous Slide Replay Continue Step 7: Press the 1 key [OK] to return to the Settings menu. Press the 1 key [OK] again to return to the main menu. Power Supply TI-84 Silver Edition Texas Instruments pH SENSOR CALIBRATION PH CALIBRATION: LINEAR SLOPE INT :OK 2:CALIBRATE NOW 3:MANUAL ENTRY ml CH 1: PH 7 Mode: TIME GRAPH-180 1: SETUP4: ANALYZE 2: START5: TOOLS 3: GRAPH6: QUIT CH 1: PH CH 2: CH 3: CH 4: DIG1: DIG2: MODE: TIME GRAPH-900 1:OK 3:ZERO 2:CALIBRATE 4:SAVE/LOAD pH reading for a solution

TI-84 Silver Edition Texas Instruments CALIBRATION PH CALIBRATION: LINEAR SLOPE INT 0 4 1:OK 2:CALIBRATE NOW 3:MANUAL ENTRY TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: TI-84 Silver Edition Texas Instruments 1 ENTER VALUE ? 4 TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: TI-84 Silver Edition Texas Instruments 2 ENTER VALUE ? 7 TI-84 Silver Edition Texas Instruments CALIBRATION PH CALIBRATION: LINEAR SLOPE INT :OK 2:CALIBRATE NOW 3:MANUAL ENTRY Previous Slide Replay Continue (2) Press ENTER key (3) Press 4 Key then the ENTER Key (1) Press 2: CALIBRATE NOW (4) Press ENTER key (5) Press 7 key then the ENTER key Calibrating The pH Sensor: Review of Steps 5-7 (6) Press 1 twice to return to default menu screen

TI-84 Silver Edition Texas Instruments CALIBRATION PH CALIBRATION: LINEAR SLOPE INT 0 4 1:OK 2:CALIBRATE NOW 3:MANUAL ENTRY TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: TI-84 Silver Edition Texas Instruments 1 ENTER VALUE ? 4 TI-84 Silver Edition Texas Instruments CALIBRATION SENSOR MONITOR VOLTAGE, WHEN STABLE,PRESS [ENTER]. VALUE VOLTAGE POINT 1: POINT 2: TI-84 Silver Edition Texas Instruments 2 ENTER VALUE ? 7 TI-84 Silver Edition Texas Instruments CALIBRATION PH CALIBRATION: LINEAR SLOPE INT :OK 2:CALIBRATE NOW 3:MANUAL ENTRY Previous Slide Replay Continue (2) Press ENTER key (3) Press 4 Key then the ENTER Key (1) Press 2: CALIBRATE NOW (4) Press ENTER key (5) Press 7 key then the ENTER key (6) Press 1 twice to return to default menu screen Calibrating The pH Sensor: Review of Steps 5-7

End of Tutorial 4 Menu Options Back to Beginning Previous Slide Finished