YSI pH100A User Manual [en, es, fr]

Operations Manual

EcoSense® pH100A

ês

Portable

pH, mV and

Temperature

Instrument

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WARRANTY

The EcoSense® pH100A Instrument is warranted for one year from date of purchase by the
end user against defects in materials and workmanship. pH100A probes and cables are
warranted for six months from date of purchase by the end user against defects in material
and workmanship. 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, write or call your local YSI representative, or contact YSI Customer
Service in Yellow Springs, Ohio. 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: (i) failure to
install, operate or use the product in accordance with YSI's written instructions; (ii) abuse or
misuse of the product; (iii) failure to maintain the product in accordance with YSI's written
instructions or standard industry procedure; (iv) any improper repairs to the product; (v) use
by you of defective or improper components or parts in servicing or repairing the product; or
(vi) 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.

CONTACT INFORMATION

YSI Inc.
1725 Brannum Lane
Yellow Springs OH, 45387
800-897-4151; 937-767-7241
Fax: [phone]
Email: [e-mail]
Website: www.ysi.com

1

CONTENTS

WARRANTY ............................................................................................................ 1

CONTACT INFORMATION .................................................................................. 1

GENERAL INTRODUCTION ................................................................................. 3

INITIAL INSPECTION ............................................................................................ 3

THE INSTRUMENT ................................................................................................ 3

BATTERY INSTALLATION .................................................................................... 3

Battery Disposal ............................................................................................... 3

KEY FUNCTIONS OF THE MODEL pH100A ..................................................... 4

THE LCD DISPLAY ................................................................................................. 4

OPERATIONAL PROCEDURES ........................................................................... 4

Buffer Set Selection ......................................................................................... 4

pH Calibration .................................................................................................. 5

Using the model pH160 Electrode Simulator ............................................. 5

pH Measurements ........................................................................................... 5

Temperature Measurements ......................................................................... 6

mV Measurements .......................................................................................... 6

Saving, Viewing and Deleting Data .............................................................. 6

TROUBLESHOOTING ........................................................................................... 7

SPECIFICATIONS .................................................................................................. 7

RECOMMENDED SPARE PARTS LIST ................................................................ 8



2

GENERAL INTRODUCTION

The model pH100A is one of three instruments in the EcoSense product line from YSI. The
pH100A is a precision tool that measures pH, mV and temperature. A built-in microprocessor
stores, calculates and compensates for all parameters related to pH determinations including
pH electrode temperature characteristics, electrode slope deviations and buffer solutions.

This instrument is waterproof (IP67) when the connector cap is installed. The mechanical
touch keys are highly reliable with tactile and audio feedback. This meter uses one 9V battery.
Re-calibration is not required when power is restored.
The front of the meter has a large LCD that displays pH or mV and temperature
simultaneously along with user prompts and mode indicators. The unit prompts the user
through calibration and measurement procedures.

An AUTOLOCK feature for both pH and mV measurements enables the unit to automatically
sense the end point and "lock" the display to indicate the end point value of a measurement.
The pH100A can also be used in non-AUTOLOCK mode. AUTOLOCK and user prompts help
eliminate most errors in determining pH and mV values, resulting in precise, repeatable,
error-free measurements.

The model pH100A is available with pH, mV, ORP and ATC (Automatic Temperature
Compensation) probes. Other features include electrode offset recognition, electrode slope
recognition, electrode efficiency display, built-in buffer coefficients, automatic or manual
temperature compensation, long battery life, 50 data set memory and 50/60 Hz AC noise
rejection. This meter is universal, user-friendly, for field, industrial and laboratory applications.

INITIAL INSPECTION

Carefully unpack the unit and accessories, and inspect for shipping damages. Compare
received parts with materials listed on the packing list. Notify YSI immediately of any damage
or missing parts. Save all packing materials until satisfactory operation is confirmed.

THE INSTRUMENT

Though the instrument is housed in a water-proof IP67 case, DO NOT use it underwater. The
connector is not waterproof unless the cap cable is installed. In case of submersion without
the cap connected, follow these steps immediately:

1. Rinse unit carefully with distilled water. After rinsing and drying, inspect and clean

connectors to remove all contaminants that may affect probe connections.

2. Wait for the unit and probe to dry completely before resuming operation.

3. If the unit does not function correctly after steps 1 and 2, call YSI for possible repair or

replacement (see Warranty).

BATTERY INSTALLATION

An initial display of “BAT” on the LCD indicates approximately one
hour of battery life for unit operation within specifications. Replace
battery when “BAT” appears on the LCD. (See Figure 1.)
To replace battery, remove the two battery cover screws and
battery cover and o-ring. Replace the 9V battery. Replace battery
cover and o-ring (align the o-ring properly to insure a good seal)
and fasten the two battery cover screws for the splash-resistant
feature.

Figure 1.
Battery Installation

Battery Disposal

This instrument is powered by a 9 volt battery, which the user must remove and dispose of
when the batteries no longer power the instrument. Disposal requirements vary by country

3

and region, and users are expected to understand and follow the battery disposal
requirements for their specific locale.

KEY FUNCTIONS OF THE MODEL pH100A

1. : Turns the unit ON or OFF. The pH calibration values are not erased when the unit is

turned off. The unit powers up in the same status as when it was turned off. When the
unit is not in use, turn it off to save battery life. The instrument has a 30 minute auto shut
off feature when not in use. For long term storage, remove the batteries.

2. MODE: Selects display mode. Press MODE to sequentially display pH-AUTOLOCK ,

mV-AUTOLOCK , pH, mV, Recall and Delete. Calibration values are not affected by

.

changing display mode

3. STAND and SLOPE Keys: Used for dual-point pH calibration of the unit. Press and hold

STAND while turning on the power to change buffer sets.

4.  and  Keys: Press to enter temperature values in manual (MAN) mode. These keys are

inoperative when operating in ATC mode.

5. MEA./EFF.: Press to release the unit from AUTOLOCK status when operating in pH-

AUTOLOCK or mV-AUTOLOCK mode. Press and hold for 5 seconds to display the
electrode efficiency.

6. ESC: Press once to store data. Press and hold for 2 seconds to clear the unit when an

error message appears; it clears all calibration values stored in internal memory. When
ESC is pressed for 2 seconds, all LCD elements light. After about 2 seconds, the unit
enters pH-AUTOLOCK mode. “AUTOLOCK” displays and “STAND” begins to flash
indicating the need for calibration.

THE LCD DISPLAY

1. WAIT: Displays while unit waits for a

stable reading or end point sensing.

2. BAT: Low battery indicator.

3. ATC/MAN: “ATC” displays if an ATC

probe is connected. Otherwise, “MAN”
displays.

4. STAND/SLOPE: “STAND” or “SLOPE”

remains steady if the parameter has been
calibrated. If either one has not been
calibrated, it flashes.

5. AUTO: Autolock mode indicator.

6. HOLD: Indicates a reading is frozen during Autolock mode.

7. EFF%: Displays when the user views electrode efficiency. It is recommended to replace the

electrode when efficiency is less than 75%.

8. pH/mV : Unit and mode indicators.

9. Main display for pH, mV and probe efficiency values.

10. C: Temperature display.

1

WAITHOLD

STA ND
SLOPE

AUTO

T

A

B

ATC
MA N

2

3

4

5

EFF%

Figure 1. LCD Display

pH

mV

C

OPERATIONAL PROCEDURES
Buffer Set Selection

The pH100A has two buffer sets: 7.00, 4.01, 10.01 pH and 6.86, 4.00, 9.18 pH. The factory
default is buffer set 7.00, 4.01, and 10.01. To change the buffer set, turn off the unit and
place the sensor in buffer 7.0. Next, turn the unit on while pressing and holding the STAND
key. Continue pressing the STAND key until the unit beeps. If the unit is uncalibrated and in
pH mode, it displays “7.00” if the first set is active, and “6.86” if the second set is active.

4

6

7

8

9

10

pH Calibration

The pH100A uses a 2-point calibration. The first point must be a 6.86/7.00 buffer, and the
second either a 4.00/4.01 or 9.18/10.01. These buffers can be purchased from a YSI
representative.

1. Turn the unit on. Connect the pH electrode to the BNC connector and the ATC/Temp

probe to the ATC/Temp connector of the unit; “ATC” displays. Press MODE until “pH”
displays. Autolock may be on or off as desired.

2. Place the pH and ATC/temp probes into the first buffer solution (either 7.00 or 6.86).

Allow temperature readings to stabilize, then press and hold “STAND” for 3 seconds to
calibrate. If AUTOLOCK is off, the first point has been calibrated. If AUTOLOCK is on,
“WAIT” flashes until the unit detects a stable reading. Once the unit calibrates the first
point, “SLOPE” flashes. NOTE: If no temperature probe is connected, adjust the
temperature reading to that of the first buffer using the  or  keys (0.0 to 60ºC) BEFORE
pressing “STAND”.

3. Rinse the pH and ATC/temp probes in distilled water, then place into the second buffer

solution (either 4.01/4.00 or 10.01/9.18). Allow temperature readings to stabilize, then
press “SLOPE” to calibrate. If AUTOLOCK is off, the second point has been calibrated. If
AUTOLOCK is on, “WAIT” flashes until the unit detects a stable reading. Once the unit
calibrates the second point, the unit beeps twice and both “STAND” and “SLOPE” display
steadily. NOTE: If no temperature probe is connected, adjust the temperature reading to
that of the first buffer using the  or  keys (0.0 to 60ºC) BEFORE pressing “SLOPE”.

4. The unit calculates and compensates for the pH electrode slope deviation corresponding

to the values of the two calibration buffers. The unit is now dual-point calibrated and

ready for measurements. After calibration, press and hold MEA. /EFF. for about 5

seconds to display the new electrode efficiency.

Using the model pH160 Electrode Simulator

The model pH160 Electrode Simulator can be used to confirm proper instrument calibration.
To use the simulator:

1. Install the 9V battery provided.

2. Attach the pH160 to the pH100A. Turn both units on. The pH160 has a small switch to the

right of the pH buttons.

3. In pH measurement mode, press one of the pH buffer simulator buttons on the pH160.

The corresponding pH value should appear on both screens.
Note: Calibration with the pH simulator calibrates only the instrument - NOT the instrument
and probe. For best accuracy, calibrate the pH instrument and probe together using buffer
solutions.

pH Measurements

To take pH measurements, “STAND” and “SLOPE” must display steadily, indicating the unit is
dual-point calibrated and ready for measurements. If “STAND” and “SLOPE” are blinking,
perform a pH calibration before taking measurements.

1. Press MODE to enter pH mode with AUTOLOCK on or off as desired. For inherently

unstable samples, the unit will not AUTOLOCK. Turn AUTOLOCK off in this case.

2. Rinse the pH electrode and/or ATC/temp probe with distilled water and immerse in the

sample to be measured. Remove any air bubbles trapped around the probe by shaking or
stirring the probe. Allow the pH and/or temperature to stabilize. If no ATC/temp probe is
connected, “MAN” displays, indicating manual temperature compensation. Set unit to
display the sample temperature by pressing the  and  keys (-10.0 to 120°C). If an
ATC/temp probe is connected “ATC” displays along with the sample temperature.

3. If AUTOLOCK is off, the pH value of the sample displays on the screen. If both pH and

temperature readings are stable, take a reading. If AUTOLOCK is on, press MEA./EFF.
“WAIT” flashes until the unit determines a stable pH reading.

5

Temperature Measurements

The model pH100A can measure temperature independently with the ATC/Temp probe
without using the pH electrode. Place the ATC/Temp probe in the media to be measured.
The measured temperature displays.

mV Measurements

1. Connect the optional combination mV electrode to the unit. Press MODE to enter mV

mode with AUTOLOCK on or off as desired. For inherently unstable samples, the unit will
not AUTOLOCK. Use mV mode with AUTOLOCK off in this case.

2. Rinse electrode with distilled water and immerse it in sample to be measured. If

AUTOLOCK is off, the mV value of the sample will be displayed on the screen. If
AUTOLOCK is on, press MEA./EFF. “WAIT” flashes until the unit determines a stable mV
reading.

Saving, Viewing and Deleting Data

The pH100A can save 50 data records. When in measurement mode, press ESC to save a
record. The instrument will confirm the saved data by displaying SAVE and the record
number for one second. “Full” is displayed when trying to save data and the memory is full.

To view saved data, press mode until RECALL is displayed and then press ESC. Use the Up
or Down arrow keys to review different saved records. Press Mode to escape back to
measurement mode.

To delete data records, press Mode while in measurement mode until DELETE is displayed.
Press ESC . “All” will be displayed and blinking. Press the Up or Down arrow key to switch
between delete ‘All’ or ‘Each’ options. Select either ‘All’ or ‘Each’ by pressing ESC while that
option is displayed.

If ‘All’ is selected, all records will be deleted from memory and ‘None’ will be displayed. Press
Mode twice to return to the measurement mode.

If ‘Each’ is selected, the Up and Down arrow keys will allow you to scroll through the saved
data records. Press ESC to delete the selected record. All records after the deleted
record will shift up to keep the records in sequential order. For example, if record 3 is
deleted, record 4 will become record 3 and record 5 will become record 4. Press Mode twice
to return to the measurement mode.

6

TROUBLESHOOTING



MAIN

DISPLAY

Er 1

Er 2

 pH electrode offset is greater/less

 STAND was pressed before the

 pH electrode is faulty
 pH electrode slope is off by more

 SLOPE was pressed before the

 Buffer 4.00, 4.01, 9.18 or 10.01 is not

POSSIBLE CAUSE CORRECTIVE ACTION

 Replace the buffer and/or

than +/-1.5 pH.

the pH electrode. Press ESC.

 Allow sufficient time for the

electrode and ATC/Temp probe settle
to within ±1.5 pH of the buffer value.

electrode and ATC/Temp
probe to stabilize.

 Return for service.

Check that the correct buffer

than 30% of ideal slope.

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

correct.

is used and that the
electrode slope is not off by
more than 30% from the
theoretical slope.

 Allow sufficient time for the

electrode and ATC/Temp
probe to stabilize.

 Replace the buffer and/or

the pH electrode. Press ESC.

 Return for service.

Er 3

 Temperature is out of the 0.0 to 60.0

°C range.

 Bring the buffer temperature

within range.

 Return for service.

OvEr/Undr

 Measured pH is out of the 16.00/-2.00

pH range.

 Measured mV is out of the 1250/-

2000 mV range.

 Measured temperature is out of the

-10/120 °C range.

 Bring the out of range unit

into the correct measuring
range.

 If units are within proper

range, return product for
service.

SPECIFICATIONS

Display Range Accuracy Resolution

pH -2.00 to 16.00 pH ±0.1%, ±2 lsd 0.01 pH
mV -1999 to 1999 mV ±0.1%, ±1 lsd 1 mV

Temperature °C -10.0 to 120 °C ±0.5 °C 0.1 °C

pH Temp Compensation
pH Buffer Recognition (4.01, 7.00 & 10.01) or (4.00, 6.86 & 9.18)
pH Buffer Calibration Temp. Range
pH Electrode Offset Recognition ±90mV at pH 7.00 or 6.86
pH Electrode Slope Recognition ±30% at pH 4.00, 4.01, 9.18 or 10.01
Power

Instrument Casing Waterproof IP 67
Calibration Back-up Yes

Audio Feedback Yes, on all touch keys
Autolock Feature Yes
Operating Temp. Range
Operating Relative Humidity Range up to 95%
ATC Probe
Dimensions (L x W x D)
Weight (batteries included)

AUTO/MANual -10.0 to 120.0

°C

0 to 60

One 9V battery/ Approximately 1000 hours

°C

0 to 50

Thermistor, 10k / 25

18.7 cm x 7.6 cm x 3.8 cm (7.37 in x 3 in x 1.5 in)
270 grams (.6 lb)

7

°C

°C

RECOMMENDED SPARE PARTS LIST

PART # DESCRIPTION

100-1 1-meter waterproof Y-cable with combo pH/reference junction & ATC

electrodes.

100-4 4-meter waterproof Y-cable with combo pH/reference junction & ATC

electrode.
110-1 pH electrode with 1-meter cable.
115-1 mV electrode with 1-meter cable.
130-1 ATC (temperature) electrode with 1-meter cable

160 pH Simulator electrode

606031 pH carrying case, hard sided

440 Cable weight kit
485 Instrument carrying case, soft sided

Revision C • January 2013

For the latest version of this manual, visit www.ysi.com

Item #606030REF

8

GARANTIE

L'appareil EcoSense® pH100A est garanti pour une période d'un an, à compter de la date
d'achat par l'utilisateur final, contre tout défaut matériel et de fabrication. Les sondes et les
câbles de l' pH100A sont garantis pour une période de six mois, à compter de la date d'achat
par l'utilisateur final, contre tout défaut matériel et de fabrication. Pendant la période de
garantie, YSI s'engage à réparer ou à remplacer, gratuitement et à sa discrétion, tout produit
qu'YSI peut établir comme étant couvert par la garantie.

Pour faire valoir cette garantie, écrivez ou appelez votre représentant YSI ou contactez le
Service clientèle d'YSI à Yellow Springs, Ohio, États-Unis. Envoyez le produit et son justificatif
d'achat en port payé au Centre de service homologué sélectionné par YSI. La réparation ou
le remplacement seront effectués et le produit vous sera retourné en port payé. Les produits
réparés ou remplacés sont garantis jusqu'à expiration de la période de garantie originale ou
pour au moins 90 jours, à compter de la date de réparation ou de remplacement.

Limitation de garantie

Cette garantie ne s'applique pas aux produits YSI endommagés ou présentant des
dysfonctionnements pour les raisons suivantes : (i) installation, exploitation ou utilisation du
produit d'une façon non conforme aux instructions écrites d'YSI ; (ii) abus ou mésusage du
produit ; (iii) manquement à l'entretien du produit conformément aux instructions écrites
d'YSI ou aux procédures industrielles normales ; (iv) réparation non conforme du produit ; (v)
utilisation par vous de pièces ou de composants défectueux ou non conformes lors de
l'entretien ou de la réparation du produit, ou ; (vi) modification du produit d'une façon non
expressément autorisée par YSI.

CETTE GARANTIE REMPLACE TOUTES LES AUTRES GARANTIES, EXPRESSES OU INDUITES,
Y COMPRIS LES GARANTIES DE COMMERCIABILITÉ OU D'ADAPTATION À UN USAGE
PARTICULIER. LA RESPONSABILITÉ D'YSI SELON LES TERMES DE CETTE GARANTIE SE
LIMITE À LA RÉPARATION OU AU REMPLACEMENT DU PRODUIT, CONSTITUANT VOTRE
SEUL ET UNIQUE RECOURS POUR TOUT PRODUIT DÉFECTUEUX COUVERT PAR CETTE
GARANTIE. YSI NE POURRA EN AUCUN CAS ÊTRE TENU RESPONSABLE DE DOMMAGES
SPÉCIAUX, INDIRECTS, ACCIDENTELS OU CONSÉCUTIFS RÉSULTANT DE L'UTILISATION DE
TOUT PRODUIT DÉFECTUEUX COUVERT PAR CETTE GARANTIE.

COMMENT NOUS CONTACTER

YSI Inc.
1725 Brannum Lane
Yellow Springs OH, 45387, États-Unis
800-897-4151; 937-767-7241
Télécopie : 937-767-1058
E-mail : [e-mail]
Site Web : www.ysi.com

1

TABLE DES MATIÈRES

GARANTIE .............................................................................................................. 1

Limitation de garantie ..................................................................................... 1

COMMENT NOUS CONTACTER ........................................................................ 1

INTRODUCTION GÉNÉRALE .............................................................................. 3

INSPECTION INITIALE .......................................................................................... 3

L’APPAREIL

............................................................................................................ 3

INSTALLATION DE LA PILE ................................................................................. 4

Mise Au Rebut De La Piles ............................................................................. 4

FONCTIONNALITÉS CLÉS DU MODÈLE pH100A ........................................... 4

ÉCRAN À CRISTAUX LIQUIDES .......................................................................... 5

PROCÉDURES D'UTILISATION ........................................................................... 5

Sélection du jeu de tampons ......................................................................... 5

Étalonnage du pH ........................................................................................... 5

Utilisation du simulateur d'électrode du modèle pH160 .......................... 6

Mesures du pH ................................................................................................ 6

Mesures de température ................................................................................ 6

Mesures de millivoltage ................................................................................. 7

Enregistrement, afficage et suppressions des donées

.......................... 7

DÉPANNAGE ......................................................................................................... 8

SPÉCIFICATIONS .................................................................................................. 8

LISTE DES PIÈCES DÉTACHÉES RECOMMANDÉES ........................................ 9



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2