YSI pH1200 User Manual [en, es]

pH1200

OPERATIONS MANUAL

LABORATORY pH/mV/Temp Instrument

English, Español, Português

Item #601204REF Rev A October 2012

The YSI logo, YSI and Xylem are registered trademarks.

CONTENTS

Warranty ........................................................................................2

Getting started ..............................................................................3

Display ......................................................................................3

Keys ...........................................................................................4

Buffer Set Selection ......................................................................5

pH Calibration ...............................................................................6

Calibration with an ATC/Temp probe in the

pH-AUTOLOCK mode .............................................................6

Calibration with manual temperature compensation

in the pH-AUTOLOCK mode ..................................................7

Calibration with an ATC/Temp probe in the

pH-NON-AUTOLOCK mode ..................................................8

Calibration with manual temperature compensation

n the pH-NON-AUTOLOCK mode .........................................9

pH Measurements ........................................................................9

Measurement with an ATC/Temp probe in the

pH-AUTOLOCK mode .............................................................9

Measurement with manual temperature

compensation in the pH-AUTOLOCK mode ......................10

Measurement with an ATC/Temp probe

in the pH-NON-AUTOLOCK mode ......................................10

Measurement with manual temperature

compensation in the pH-NON-AUTOLOCK mode ............10

Temperature Measurements .....................................................11

mV Measurements ......................................................................11

Measurement in the mV-AUTOLOCK mode .......................11

Measurement in the mV NON-AUTOLOCK mode .............11

Troubleshooting .........................................................................12

Specifications ..............................................................................13

Accessories/Spare Parts .............................................................14

Recycling .....................................................................................14

Battery Disposal .....................................................................14

Contact Information ...................................................................15

Ordering and Technical Support .........................................15

Service Information ...............................................................15

WARRANTY

The YSI pH1200 instrument is warranted for two (2) year from date of purchase by the end user against defects in materials and workmanship, exclusive of batteries and any damage caused by defective batteries. pH1200 cable/ sensor assemblies are warranted for one (1) year from date of purchase by the end user against defects in material and workmanship. pH1200 instruments & cables are warranted for 90 days from date of purchase by the end user against defects in material and workmanship when purchased by rental agencies for rental purposes. Within the warranty period, YSI will repair or replace, at its sole discretion, free of charge, any product that YSI determines to be covered by this warranty.

To exercise this warranty, call your local YSI representative, or contact YSI Customer Service in Yellow Springs, Ohio at +1 937 767-7241, 800-8974151 or visit www.YSI.com for a Product Return Form. Send the product and proof of purchase, transportation prepaid, to the Authorized Service Center selected by YSI. Repair or replacement will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for the balance of the original warranty period, or at least 90 days from date of repair

or replacement.

LIMITATION OF WARRANTY

This Warranty does not apply to any YSI product damage or failure caused by:

• Failure to install, operate or use the product in accordance with

YSI’s written instructions;

• Abuse or misuse of the product;

• Failure to maintain the product in accordance with YSI’s written

instructions or standard industry procedure;

• Any improper repairs to the product;

• Use by you of defective or improper components or parts in

servicing or repairing the product;

• Modification of the product in any way not expressly authorized

by YSI.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. YSI’S LIABILITY UNDER THIS WARRANTY IS LIMITED TO REPAIR OR REPLACEMENT OF THE PRODUCT, AND THIS SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY DEFECTIVE PRODUCT COVERED BY THIS WARRANTY. IN NO EVENT SHALL YSI BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECTIVE PRODUCT COVERED BY THIS WARRANTY.

GETTING STARTED

DISPLAY

5. ATC

ATC (Automatic Temperature Compensation) indicator will be displayed if a temperature probe is connected.

12. EFF. / %

This will be displayed if the user is viewing the efficiency of the electrode. It is recommended to use a new electrode when the efficiency value is less than 75%.

1. HOLD

This will indicate that the reading is frozen during AUTOLOCK mode.

2. WAIT

This will be displayed when the unit is still waiting for a stable reading.

3. LOBAT

Low battery indicator. pH1200 uses 4 C-cell alkaline batteries. The battery compartment is on the bottom of the instrument and can be accessed by sliding the cover according to the direction of the arrows.

8. C° /F°

Temperature units.

9. AUTO

AUTOLOCK mode indicator. (If the difference between a reading at the first second and tenth second is less than 0.01 pH or 0.2 mV then the instrument will “lock” the tenth reading).

10. mV

Measurement unit and mode indicators.

6. CAL

This will be displayed when the instrument enters the calibration mode.

7. SECONDARY DISPLAY

For temperature in C° or F° display.

KEYS

Key

On/Off

Press and hold this key for 5 seconds to power on or turn off the instrument. Once the unit is powered up, press the same key to turn on or off the backlight.

Mode

Selects display mode. Pressing this key changes the display sequentially to display pH-AUTO, mV-AUTO, pH and mV. The calibration values will not be affected by changing the display modes. During pH calibration, press Mode key to exit calibration mode.

13. Buffer selection

This indicator will flash if the unit is not yet calibrated. This indicator will remain lit-up if the unit has been calibrated.

Description

4. MAN

Displayed if a temperature probe is not connected.

11. pH

Measurement unit and mode indicators.

Clear (not active in mV mode) Used to clear the unit when an error signal appears. It clears all calibration values stored in the internal memory. Under normal use, the key will not be activated unless pressed and held for 2 seconds to prevent accidentally erasing stored memory. When the “Clear” key is pressed, all segments of the LCD will be on. After about 2 seconds the unit will enter the pH-AUTO mode. The “AUTO” and “CAL” will be on and one of the buffers in the pre-selected buffer set will start to flash. The unit

must be calibrated again before use.

Up/Down

The two keys are used to manually enter the temperature values. They have no effect on the unit when operating in ATC mode.

Stand/Slope

The “Stand” and “Slope” keys are used for pH calibration of the unit. Pressing and holding the Stand key while turning on the power, will change the buffer set.

Meas. / Effic.

This key is used to bring the unit out of the AUTO condition when operating in the pH-AUTOLOCK or mV-AUTOLOCK mode. Press and hold this key for 3 seconds, the LCD will display the efficiency of the electrode.

BUFFER SET SELECTION

The pH1200 has two buffer sets: 7.00, 4.01, 10.01 and 6.86, 4.00, 9.18. The meter is factory pre-set to 7.00, 4.01 and 10.01. To change the buffer set, turn off the unit, then press and hold the “Stand” key while turning on the unit again.

Note: There is no need to repeat this procedure every time the unit is powered up unless the buffer settings need changed.

p H CALIBRATION

The pH1200 can perform a one, two or three point calibration.

Note: If the unit uses two or three point calibration, the first point must be 6.86/7.00. The second point can either be 4.00/4.01 or 9.18/ 10.01.

CALIBRATION WITH AN ATC/TEMP PROBE IN THE PH-AUTOLOCK MODE

1. Turn the unit on. Press “Clear” key for 2 seconds, all LCD elements

will light up. The meter clears all calibration values stored in internal

memory.

2. Connect the pH electrode to the BNC connector and the ATC/Temp

probe to the ATC/Temp connector of the unit: “ATC” will light up.

“pH” and “AUTO” will light up. One of the buffers in the buffer set

will flash.

3. Rinse the pH and ATC/Temp probes in distilled water and immerse

them in the first buffer solution (6.86/7.00 if doing a multipoint

calibration). Allow temperature reading to stabilize, then press and

hold “Stand” key for 2 seconds to calibrate. The “WAIT” icon will

flash until the unit detects a stable reading. Once the unit calibrates

the first point, the selected buffer remains lit up while the remaining

two buffers flash. The unit is ready to be sloped at the second buffer.

Note: If the first buffer solution is 6.86/7.00, at this moment,

press the “Mode” key. The instrument will save the calibration and

exit the calibration mode. Single point calibration is complete. If

the first buffer solution is 4.00/4.01, 9.18/10.00, at this moment,

the instrument will save the calibration and automatically exit the

calibration mode. Single point calibration is complete.

4. Rinse the pH and ATC/Temp probe in distilled water and immerse

them in the second buffer solution (either 4.00/4.01 or 9.18/10.01).

Allow temperature reading to stabilize, then press “Slope” key to

calibrate. The “WAIT” icon will flash until the unit detects a stable

reading. Once the unit calibrates the second point, the selected two

buffers light up and the remaining buffer starts to flash. The unit is

ready to be sloped at the third buffer.

Note: At this moment, press the “Mode” key and the instrument will

save the calibration and exit the calibration mode. 2-point calibration

is complete.

5. Rinse the pH and ATC/Temp probe in distilled water and immerse them in the third buffer solution (either 9.18/10.01 or 4.00/4.01). Allow temperature reading to stabilize, then press “Slope” key to calibrate. The “WAIT” icon will flash until the unit detects a stable reading. Once the instrument calibrates the third point, the unit will save the calibration and automatically exit the calibration mode. 3-point calibration is complete.

6. The unit calculates and compensates for the pH electrode slope deviation corresponding to the values of the three calibration buffers. After calibration, press and hold “Meas. / Effic.” key for about 3 seconds to display the new electrode efficiency.

CALIBRATION WITH MANUAL TEMPERATURE COMPENSATION IN THE PH-AUTOLOCK MODE

1. Turn the unit on. Press “Clear” key for 2 seconds, all LCD elements will light up. The meter clears all calibration values stored in internal memory.

2. Connect the pH electrode to the BNC connector of the unit, “MAN” will light up. “pH” and “AUTO” will light up. One of the buffers in the buffer set will flash.

3. Rinse the pH probes in distilled water and immerse it in the first buffer solution (6.86/7.00 if doing a multipoint calibration). Adjust the temperature reading to that of the first buffer using the “up” or “down” keys (0.0 to 60.0 °C). Then press and hold “Stand” key for 2 seconds to calibrate. The “WAIT” icon will flash until the unit detects a stable reading. Once the unit calibrates the first point, the selected buffer remains lit while the remaining two buffers flash. The unit is ready to be sloped at the second buffer.

CALIBRATION WITH AN ATC/TEMP PROBE IN THE PH-NON-AUTOLOCK MODE

1. Turn the unit on. Press “Clear” key for 2 seconds, all LCD elements will light up. The meter clears all calibration values stored in internal memory.

2. Connect the pH electrode to the BNC connector and the ATC/ Temp probe to the ATC/Temp connector of the unit: “ATC” will light up. Press “Mode” key to select “pH” mode. “pH” is on. One of the buffers in the buffer set will flash.

3. Rinse the pH and ATC/Temp probes in distilled water and immerse them in the first buffer solution (6.86/7.00 if doing a multipoint calibration). Allow temperature and pH readings to stabilize, then press and hold “Stand” key for 2 seconds to calibrate, the unit immediately calibrates the first point, the selected buffer remains lit while the remaining two buffers flash. The unit is ready to be sloped at the second buffer.

Note: If the first buffer solution is 6.86/7.00, at this moment, press the “Mode” key, the unit will save the calibration and exit the calibration. Single point calibration is complete. If the first buffer solution is

4.00/4.01, 9.18/10.00, at this moment, the unit will automatically exit the calibration mode. Single point calibration is complete.

4. Rinse the pH and ATC/Temp probe in distilled water and immerse them in the second buffer solution (either 4.00/4.01 or 9.18/10.01). Allow temperature and pH readings to stabilize, then press “Slope” key to calibrate. The unit immediately calibrates the second point, the other buffer solution will flash. The unit is ready to be sloped at the third buffer.

Note: If the first buffer solution is 6.86/7.00, at this moment, Press the “Mode” key, the unit will save the calibration and exit calibration mode. Single point calibration is complete. If the first buffer solution is 4.00/4.01, 9.18/10.00, at this moment, the unit will automatically exit the calibration mode. Single point calibration is complete.

4. Repeat steps 4-6 of “Calibration with an ATC/Temp probe in the pH-AUTOLOCK mode” for dual and three point calibration.

Note: At this moment, press the “Mode” key, the unit will save the calibration and exit the calibration. Dual point calibration is complete.

5. Rinse the pH and ATC/Temp probe in distilled water and immerse them in the third buffer solution (either 9.18/10.01 or 4.00/4.01). Allow temperature and pH readings to stabilize, then press “Slope” key to calibrate. The unit immediately calibrates the third point and the unit will automatically save and exit the calibration mode. Three point calibration is complete.

CALIBRATION WITH MANUAL TEMPERATURE COMPENSATION IN THE PH-NON-AUTOLOCK MODE

1. Turn the unit on. Press “Clear” key for 2 seconds, all LCD elements will lit up. The meter clears all calibration values stored in internal memory.

2. Connect the pH electrode to the BNC connector of the unit, “MAN” will light up. Press “Mode” key to select “pH” mode. “pH” is on. One of the buffers in the buffer set will flash.

3. Rinse the pH probes in distilled water and immerse it in the first buffer solution (6.86/7.00 if doing a multipoint calibration). Adjust the temperature reading to that of the first buffer using the “up” or “down” keys (0.0 to 60.0 °C). Then press and hold “Stand” key for 2 seconds to calibrate. The unit immediately calibrates the first point, the selected buffer remains lit while the remaining two buffers flash. The unit is ready to be sloped at the second buffer.

Note: If the first buffer solution is 6.86/7.00, at this moment, Press the “Mode” key, the unit will save the calibration and exit the calibration mode. Single point calibration is complete. If the first buffer solution is 4.00/4.01, 9.18/10.00, at this moment, the unit will immediately save and exit the calibration mode. Single point calibration is complete.

4. Repeat steps 4-6 of “Calibration with an ATC/Temp probe in the pH-NON- AUTOLOCK mode” for dual and three point calibration.

p H MEASUREMENTS

To take pH measurements, the pre-selected buffer solution set must light up, indicating the unit is single-, dual-, or three-point calibrated and ready for measurements. If buffer solution set flashes, perform a pH calibration before taking measurements.

4. Press the “Meas.” key. “WAIT” will flash. The unit is waiting for a stable reading. The display will track the pH value as sensed by the pH electrode and the ATC/Temp probe.

5. When “WAIT” disappears, the reading is then in “HOLD” mode and will not respond to further changes from the sample. The pH value shown is the pH value of the sample at the displayed sample temperature. Note: For samples that are inherently unstable, the

unit will not AUTOLOCK. In this case, use the pH-NON-AUTOLOCK mode for measurements.

MEASUREMENT WITH MANUAL TEMPERATURE COMPENSATION IN THE PH-AUTOLOCK MODE

1. Connect the pH electrode to the BNC connector of the unit. “MAN” will light up. Set unit to display the sample temperature by pressing the up and down keys (0.0 to 100.0 °C).

2. Repeat steps 2-5 of “Measurement with an ATC/Temp probe in

the pH- AUTOLOCK mode”.

MEASUREMENT WITH AN ATC/TEMP PROBE IN THE PH-NON-AUTOLOCK MODE

1. Connect the pH electrode to the BNC connector and the ATC/Temp probe to the ATC/Temp connector of the unit. “ATC” will light up.

2. Press “Mode” key until “pH” lights up.

3. Rinse the pH electrode and ATC/temp probe with distilled water and immerse in the sample. Remove air bubbles by shaking/stirring the probe.

4. Allow sufficient time for the display to stabilize. The instrument will display the pH value of the sample at the displayed sample temperature.

MEASUREMENT WITH AN ATC/TEMP PROBE IN THE PH-AUTOLOCK MODE

1. Connect the pH electrode to the BNC connector and the ATC/Temp probe to the ATC/Temp connector of the unit. “ATC” will light up.

2. Press “Mode” key until “pH” and “AUTO” light up.

3. Rinse the pH electrode and ATC/temp probe with distilled water and immerse in the sample. Remove air bubbles by shaking/stirring the probe.

MEASUREMENT WITH MANUAL TEMPERATURE COMPENSATION IN THE PH-NON-AUTOLOCK MODE

1. Connect the pH electrode to the BNC connector of the unit. “MAN” will light up. Set unit to display the sample temperature by pressing the “up” and “down” keys (0.0 to 100.0 °C).

2. Repeat steps 2-4 of “Measurement with an ATC/Temp probe in

the pH NON- AUTOLOCK mode”.

TEMPERATURE MEASUREMENTS

TROUBLESHOOTING

The pH1200 can measure temperature independently with the ATC/ temp probe without using the pH electrode. Place the ATC/temp probe in the sample. The unit will display the measured temperature.

m V MEASUREMENTS

MEASUREMENT IN THE MV-AUTOLOCK MODE

1. Connect the optional combination ORP electrode to the BNC connector of the unit.

2. Press “Mode” key until “mV” and “AUTO” light up.

3. Rinse electrode with distilled water and immerse in the sample. Remove air bubbles by shaking/stirring the probe.

4. Press the “Meas.” key. “WAIT” will flash. The unit is waiting for a stable reading. The display will track the mV value as sensed by the ORP electrode

5. When “WAIT” disappears, the reading is then in “HOLD” mode and will not respond to further changes from the sample. The mV value is the sample reading.

Note: For samples that are inherently unstable, the unit will not AUTOLOCK. In this case, use the mV-NON-AUTOLOCK mode for measurements.

MEASUREMENT IN THE MV NON-AUTOLOCK MODE

1. Connect the optional combination ORP electrode to the BNC connector of the unit.

2. Press “Mode” key until “mV” lights up.

3. Rinse electrode with distilled water and immerse in the sample.

4. Allow sufficient time for the display to stabilize. The instrument will display the mV value of the sample.

Error on Main

Display Possible cause(s)

Display

"Er1" 1. “Stand” was pressed

before the electrode and ATC/Temp probe settled to within +/-1.5 pH of the buffer value.

2. pH electrode offset is greater or less than +/-

1.5 pH.

3. pH electrode is faulty.

"Er2" 1. “Slope” was pressed

before the electrode and ATC/Temp probe settled to within 30% of the buffer value.

2. Buffer 4.00, 4.01,

9.18 and 10.01 are incorrect.

3. pH electrode slope is off by more than 30% of ideal slope.

"Er3" 1. Temperature is

out of the 0.0 to

60.0°C range.

"over" / ”undr”

1. Measured pH is out of the 0.00 to

14.00 pH range.

2. Measured mV is out of the –1999.9 to

1999.9 mV range.

3. Measured temperature is out of the 0.0 to

100.0°C range.

Corrective Action(s)

1. Press “Clear” key, allow sufficient time for the electrode and ATC/Temp probe to stabilize, press “Stand” again to start the calibration procedure.

2. Replace the buffer and/ or the pH electrode. Press “Clear” key to recalibrate meter.

3. Replace electrode.

1. Allow sufficient time for the electrode and ATC/Temp probe to stabilize, press “Slope” key to continue the calibration procedure.

2. Check if the correct buffer is used.

3. Replace the buffer and/ or the pH electrode. Press “Clear” key to recalibrate meter.

1. Bring the buffer or sample temperature within range.

1. Bring sample pH into the correct measuring range.

2. Bring sample ORP into the correct measuring range.

3. Bring sample temperature into the correct measuring range.

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