EUTECH INSTRUMENTS CYBERSCAN PC 10 COMBINATION PHCONDUCTIVITY... User manual

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Instruction Manual
PC 10
Waterproof Hand-held pH/Conductivity/Temperature Meter
68X230401
Rev 5 08/04

Preface
This manual serves to explain the use of the Waterproof PC 10 hand-held meters. It functions
as a step by step guide to help you operate the meter and as a handy reference guide. It is
written to cover as many anticipated applications of the Waterproof PC 10 meters as possible.
If there are doubts in the use of this meter, please do not hesitate to contact the nearest
Authorised Distributor.
Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or
malfunction to the meter caused by improper use of the instrument.
The information presented in this manual is subject to change without notice as improvements
are made, and does not represent a commitment on the part of Eutech Instruments Pte Ltd/
Oakton Instruments.
Copyright © 1999
Eutech Instruments Pte Ltd/ Oakton Instruments
All rights reserved.
Rev 5, 08/04

TABLE OF CONTENTS
1. INTRODUCTION ........................................................................................1
2. DISPLAY AND KEYPAD FUNCTIONS...................................................2
2.1. DISPLAY.................................................................................................2
2.2. KEYPAD .................................................................................................3
3. PREPARATION...........................................................................................4
3.1 INSERTING THE BATTERIES ....................................................................4
3.2 CONNECTING THE PROBE.......................................................................5
4. CALIBRATION............................................................................................6
4.1. IMPORTANT INFORMATION ON METER CALIBRATION ............................6
4.2. PREPARING THE METER FOR CALIBRATION ...........................................7
4.3. TEMPERATURE CALIBRATION ................................................................8
4.4. PHCALIBRATION .................................................................................10
NOTES..................................................................................................................11
4.5. CONDUCTIVITY CALIBRATION .............................................................12
4.6. CALIBRATING FOR CONDUCTIVITY:.....................................................13
NOTES:.................................................................................................................14
5. MEASUREMENT ......................................................................................15
6. HOLD FUNCTION....................................................................................16
7. PROBE CARE AND MAINTENANCE...................................................17
8. TROUBLESHOOTING.............................................................................18
9. ERROR MESSAGES.................................................................................19
10. SPECIFICATIONS................................................................................20
11. ACCESSORIES .....................................................................................21
11.1. REPLACEMENT METER AND METER ACCESSORIES...............................21
11.2. CALIBRATION SOLUTIONS....................................................................23
12. WARRANTY..........................................................................................24
13. RETURN OF ITEMS............................................................................25

Instruction Manual PC 10
- 1 -
1. INTRODUCTION
Thank you for selecting the Waterproof PC 10 portable meter. The meter is a microprocessor-
based instrument that measures pH, conductivity, and temperature with just one probe. This
meter has many user-friendly features – all of which are completely accessible through the
water-resistant membrane keypad.
Your meter includes 4 “AAA” batteries and a combination pH / conductivity / temperature
probe with 3-meter submersible cable. Please read this manual thoroughly before operating
your meter.
WATERPROOF
pH/ Conductivity/ °C Meter
PC 1 0 Ser ies
ON
OFF
MODE
ENTER
CAL
MEAS
HOLD
Figure 1: Waterproof PC 10 portable meter

Instruction Manual PC 10
- 2 -
2. DISPLAY AND KEYPAD FUNCTIONS
2.1. Display
The LCD has a primary and secondary display.
•The primary display shows the measured pH or conductivity (µS or mS)
reading.
•The secondary display shows the temperature in °C.
The display also shows error messages, keypad functions and program functions.
See Figure 2.
pH Temp
HOLD
CONMEAS CAL
READY
ERR
pH
pH
°C
ATC
µ mS
MEASurement
mode indicator
HOLD
indicator
ERRor
indicator
Buffer
indicator
Probe
indicator
Low Battery
indicator
pH calibration
mode indicator
Temperature
calibration
mode indicator
Automatic
Temperature
Compensation
indicator
CONfirm
indicator
Primary
Display
Secondary
Display
READY
indicator
CALibration
indicator
Figure 2: A full LCD screen

Instruction Manual PC 10
- 3 -
2.2. Keypad
The large membrane keypad makes the instrument easy to use. Each button, when pressed,
has a corresponding graphic indicator on the LCD. See Figure 3.
Key Function
ON/OFF Powers on and shuts off the meter. The meter powers on in the mode it was
shut off in. For example, if you shut the meter off in Conductivity measurement
mode, the meter will be in Conductivity measurement mode when you switch
the meter on.
HOLD Freezes the measured reading. To activate, press HOLD while in
measurement mode. To release, press HOLD again.
MODE Selects the measurement parameter (conductivity or pH). Press MODE to
toggle between pH and Conductivity mode.
CAL/MEAS Toggles user between Calibration and Measurement mode.
If you were in Conductivity Measurement mode, press CAL/MEAS to enter
Conductivity Calibration mode.
If you were in pH Measurement mode, press CAL/MEAS to enter pH
Calibration mode.
NOTE: Temperature calibration is accessible from pH Calibration mode; see
pages 10 for instructions.
ENTER Press to confirm your calibration values in Calibration mode.
/  Scrolls values up and down in Calibration mode.
In pH mode, / scrolls through the auto buffer values 4.00, 7.00 and
10.00.
In Conductivity and Temperature Calibration mode,  / lets you increase
or decrease the calibration value.
Figure 3: Keypad membranes of Waterproof PC 10

Instruction Manual PC 10
- 4 -
3. PREPARATION
3.1 Inserting the Batteries
The meter is packaged with 4 “AAA” alkaline batteries required for operation. To insert the
batteries into the meter, follow the procedure outlined below.
1. Use a Philips screwdriver to remove the two screws holding the battery cover. See Figure
6 below.
2. Remove battery cover.
3. Insert batteries. Follow the diagram inside the cover for correct polarity.
4. Replace the battery cover into its original position using the two screws removed earlier.
Figure 4: Battery Compartment

Instruction Manual PC 10
- 5 -
3.2 Connecting the Probe
The Waterproof PC 10 meter uses a special combination pH / Conductivity / Temperature
probe. The probe cable has a notched 6-pin connector to attach the probe to the meter.
NOTE: Do not substitute other probes or electrodes. For replacement probe, see
the “Accessories” section, page 21-23.
NOTE: Keep connector dry and clean. Do not touch connector with soiled hands.
To connect the pH / Conductivity / Temperature probe:
1. Line up the notch and 6 pins of the meter’s connector with the holes in the probe’s
connector. Push down and screw the metal sleeve to lock the probe connector into
place. See Figure 5.
2. To remove probe, unscrew the metal sleeve and slide up the probe connector. While
holding onto metal sleeve, pull probe away from the meter.
CAUTION: Do not pull on the probe cord or the probe wires might disconnect.
Figure 5: Probe Connector

Instruction Manual PC 10
- 6 -
4. CALIBRATION
4.1. Important Information on Meter Calibration
When you recalibrate your meter, old pH and conductivity calibration data are replaced on a
point by point basis. For example, if you previously calibrated your meter at pH 4.0, 7.0, and
10.0, and you recalibrate at pH 7.0, the meter retains the old calibration data at pH 4.0 and pH
10.0.
To completely recalibrate your meter, or when you use a replacement probe, it is best to set
the meter to its factory defaults and recalibrate the meter at all points.
To reset the meter to its factory defaults:
1. While in Measurement mode, press
CAL/MEAS and hold for 3 seconds.
2. The meter will prompt RST in the lower display
and CAL in the upper display. See Figure 6.
3. Press ENTER to reset your meter to its factory
defaults. If you do not want to erase existing
calibration data, press CAL/MEAS to escape
this mode.
For information on how to calibrate your meter:
See Section 4.3 on page 8 for Temperature calibration.
See Section 4.4 on pages 10 for pH calibration.
See Section 4.5 on pages 12 for conductivity calibration.
Figure 6: Reset to factory defaults

Instruction Manual PC 10
- 7 -
4.2. Preparing the Meter for Calibration
The pH/conductivity/temperature probe included with this meter is designed for use with this
meter only. Do not substitute other types of probes or electrodes. For a replacement probe,
see the “Accessories” section, page 21.
Be sure to remove the protective cap of the pH probe before calibration or
measurement. Always immerse the probe beyond the electrode band.
Immerse the probe in tap water for 10 minutes before calibrating or taking readings to hydrate
the pH electrode surface and minimise drift.
Rinse your probe in DI water after use. Storage in electrode storage solution is ideal.
Alternatively, pH 4.0 or 7.0 calibration standards can be used for short term storage. Do not
reuse buffer solutions after calibration. Contaminants in the solution can affect the calibration,
and eventually the accuracy of the measurements.
Alwa
y
s immerse the
electrode be
y
ond this band
Always remove this protective cap
before calibration or measurement

Instruction Manual PC 10
- 8 -
4.3. Temperature Calibration
The built-in temperature sensor included in the
probe is factory calibrated. Calibrate your sensor
only if you suspect temperature errors may have
occurred over a long period of time or if you have a
replacement probe.
1. Turn the meter on. Press MODE to select pH
Measurement mode.
2. Press the CAL/MEAS key to enter pH
calibration mode. The CAL indicator will appear
above the primary display.
See Figure 10.
3. While in pH calibration mode, press the MODE
key to enter temperature calibration mode. The
primary display shows the temperature reading
with zero offset and the secondary display
shows you what the temperature value was
initially.
See Figure 11.
4. Dip the probe into a solution with known
temperature (i.e. a temperature bath). Allow
sufficient time for the meter’s temperature
reading to stabilize.
5. Press the or key to set the primary display
reading to the correct temperature value. (i.e.
the temperature of the temperature bath)
See Figure 12.
Figure 7: Enter pH Calibration mode
Figure 8: Initial temperature value
Figure 9: Adjust temperature value

Instruction Manual PC 10
- 9 -
6. Press the ENTER key to confirm temperature
calibration. The CON indicator will flash to
confirm calibration.
See Figure 13.
NOTES
To exit from Temperature Calibration mode without
confirming calibration, DO NOT press ENTER in step
6. Press CAL/MEAS instead.
Temperature calibration is restricted to ±5°C from
the initial value displayed during calibration (shown
in the secondary display).
Since temperature readings affect the accuracy of the pH and conductivity measurements, it is
strongly recommended to carry out pH and conductivity calibration after a temperature
calibration is done.
Figure 10: CONFIRM temperature
calibration

Instruction Manual PC 10
- 10 -
4.4. pH Calibration
This instrument is capable of up to 3-point pH calibration to ensure accuracy across the entire
pH range of the meter. You can perform 1, 2, or 3 point calibration with standard pH buffers of
4.01, 7.00 and 10.00.
We recommend that you perform at least 2-point calibration using standard buffers that covers
the expected sample range. You can also perform a 1-point calibration, but make sure that the
buffer value is close to the sample value you are measuring.
This meter features three pre-programmed pH buffers (pH 4.01, 7.00 and 10.00). The meter
automatically recognizes and calibrates to these standard buffer values, which makes pH
calibration faster and easier.
Calibrating for pH:
1. If necessary, press the MODE key to select pH mode. The pH indicator appears in the
upper right hand corner of the display.
2. Rinse the probe thoroughly with DI water or a rinse solution. Do not wipe the probe; this
causes a build-up of electrostatic charge on the
glass surface.
3. Dip the probe into the calibration buffer. The
end of the probe must be completely immersed
into the sample. Stir the sample using the
probe gently to create a homogeneous sample.
4. Press CAL/MEAS to enter pH calibration mode.
The primary display will show the measured
reading while the smaller secondary display will
indicate the pH standard buffer solution.
See Figure 11.
NOTE: If using a pH buffer other than pH 7,
press the or key to scroll up or
down until the secondary display value
is the same as your pH buffer value
(pH 4.00, 7.00 or 10.00).
5. Wait for the measured pH value to stabilize.
The READY indicator will display when the
reading stabilizes.
See Figure 12.
Figure 11: Calibration at pH 7.00
Figure 12: READY is displayed when
readin
g
is stable

Instruction Manual PC 10
- 11 -
6. After the reading has stabilized and the READY
indicator is displayed, press ENTER to confirm
calibration. A confirming indicator (CON)
flashes and disappears. The meter is now
calibrated to the buffer indicated in the
secondary display.
See Figure 13.
The secondary display automatically scrolls to the
next buffer calibration option.
If you are performing multi-point calibration, go to
step 7.
If you are performing one-point calibration, go to step
10.
7. Press the or key to select the next buffer value you want to calibrate (pH 4.00, 7.00
or 10.00).
See Figure 14.
8. Rinse the probe with DI water or a rinse
solution, and place it in the next pH buffer you
want to calibrate.
9. Follow steps 5 to 8 for all calibration processes
(up to 3 points).
10. When calibration is complete, press
CAL/MEAS to return to pH measurement
mode.
NOTES
To exit from pH Calibration mode without confirming calibration, DO NOT press ENTER in
step 6. Press CAL/MEAS instead.
If the selected buffer value is not within ±1.00 pH from the measured pH value:
The electrode and buffer icon blink and the ERR annunciator appears in the lower left corner
of the display. These indicators also flash if the buffer used is not the same as the buffer value
on the secondary display.
Figure 13: CONFIRM calibration point
Figure 14: Next calibration point

Instruction Manual PC 10
- 12 -
4.5. Conductivity Calibration
The Important Information on Conductivity Calibration
Your meter has four measuring ranges. You can calibrate one point in each of the measuring
ranges (up to four points). If you are measuring values in more than one range, make sure to
calibrate each of the ranges you are measuring.
The following table lists the corresponding conductivity range. You should calibrate each
range using a solution that falls between the values in the “recommended calibration solution
range” column.
Conductivity Range Recommended Calibration
Solution Range
0.00 to 19.99 µS 6.00 to 17.00 µS
0.0 to 199.9 µS 60.0 to 170.0 µS
0 to 1999 µS 600 to 1700 µS
0.00 to 19.99 mS 6.00 to 17.00 mS
NOTE:
Minimum calibration value should be 20% of full scale for the specific range. E.g.: The
LOWEST calibration value for the range of 0.00 to 19.99 µSis 4.00 µS.
When you recalibrate your meter, old calibrations are replaced on a range basis. For example,
if you previously calibrated your conductivity meter at 1413 µS in the 0 to 1999 µS range and
you recalibrate at 1500 µS (also in the 0 to 1999 µS range), the meter will replace the old
calibration data (1413 µS) in that range. The meter will retain all calibration data in other
ranges.
To completely recalibrate your meter, or when you use a replacement probe, it is best to clear
all calibration data in memory. To erase all the old conductivity data, see Section 4.1:
Important Information on Meter Calibration.
NOTE:
These meters are factory set to a temperature coefficient of 2.00% per °C. For most
applications this will provide good results. The factory default value for normalization
temperature is 25°C.

Instruction Manual PC 10
- 13 -
4.6. Calibrating for Conductivity:
1. Pour out two separate portions of your calibration
standard and one of DI water into separate clean
containers.
2. If necessary, press MODE key to select
Conductivity Mode. The µS and mS indicator will
appear on the right side of the display.
3. Rinse your probe with DI water, then rinse the
probe in one portion of the calibration standard.
Immerse the probe into the second portion of the
calibration standard. The meter auto ranging
function selects the appropriate conductivity range
(four ranges are possible). Be sure the probe is
free from air bubbles and sufficient calibration
standard is used to cover the conductivity sensor.
Wait for the reading to stabilize. The READY
indicator lights when the reading is stable.
See Figure 18
4. Press the CAL/MEAS key. The CAL indicator
appears above the primary display. The primary
display shows the measured reading and the
secondary display shows the temperature.
See Figure 19.
5. Press the ▼or ▲key to scroll to the value of your
conductivity standard. Press and hold the ▼or ▲
keys to scroll faster. See Figure 20.
MEAS
READY
°C
ATC
mS
CAL
READY
°C
ATC
mS
CAL
READY
°C
ATC
mS
Figure 16: CAL Indicator
Figure 15: Stabilized measurement
Figure 17: Adjust to standard value

Instruction Manual PC 10
- 14 -
6. Press the ENTER key to confirm calibration.
Upon confirmation, the CON indicator
appears briefly. The meter automatically
switches back into Measurement mode. The
display now shows the calibrated,
temperature compensated conductivity value.
See Figure 21.
7. For calibration in other ranges (maximum:
four ranges) repeat steps 1 through 6 with
the appropriate calibration standards.
NOTES:
To exit from Conductivity Calibration mode without confirming calibration, DO NOT press
ENTER in step 6. Press CAL/MEAS instead.
If the calibration value input into the meter is different from the initial value displayed by more
than 20%, the ERR annunciator appears in the lower left corner of the display.
Figure 18 CONFIRM the calibration value

Instruction Manual PC 10
- 15 -
5. MEASUREMENT
The READY indicator appears on the display when
the readings stabilise. It will turn off if the readings
start to fluctuate.
NOTE: Be sure to remove the protective cap of the
pH electrode before measurement.
To take readings:
1. Rinse the probe with DI water before use to
remove any impurities adhering to the probe
body. If the pH electrode has dehydrated,
soak it for 30 minutes in tap water.
2. Switch on the meter. The MEAS annunciator
appears on the top center of the LCD. The
ATC indicator appears in the lower right hand
corner to indicate Automatic Temperature
Compensation. See Figure 22.
3. Dip the probe into the sample.
NOTE: When measuring a sample, make sure that
the probe is immersed beyond the electrode band.
See figure in Section 4.2. Stir the sample using the
probe gently to create a homogenous sample. Allow
time for the readings to stabilize. Note the readings
on the display. When the readings are stable, the
READY annunciator appears.
4. To toggle between pH and conductivity
readings, press the MODE key. See Figures
23 and 24.
NOTE: Conductivity readings are auto
ranging and will automatically move to
the correct range (four ranges
possible).
MEAS
pH
°C
ATC
Figure 19: Measurement mode
Figure 20: READY
Figure 21: Conductivity mode

Instruction Manual PC 10
- 16 -
6. HOLD FUNCTION
This feature lets you freeze the value of the pH or
conductivity reading for a delayed observation.
HOLD can be used any time when in MEAS mode.
1. To hold a measurement, press the HOLD key
while in measurement mode. “HOLD” will
appear on the display.
See Figure 25.
2. To release the held value, press HOLD again.
Continue to take measurements.
NOTE: This meter will hold a reading for up to
20 minutes, after which time the meter will automatically shutoff to
conserve batteries without retaining the value that was held.
Figure 22: HOLD function