Thermo Fisher Scientific PTTestr 35 User Manual

INSTRUCTION MANUAL

MULTI-PARAMETER TESTR 35 SERIES

pH / Conductivity / TDS / Salinity / Temperature

Part of Thermo Fisher Scientific 68X441601 Rev. 1 March 2010

Thank you for selecting our Multi-Parameter Testr. This manual serves the following (3) models:

• PCTestr 35 (Eutech PCTEST35-01X441504 / Oakton 35425-00)

pH / Conductivity / Temperature

• PTTestr 35 (Eutech PCTEST35-01X441505 / Oakton 35425-05)

pH / Total Dissolved Solids / Temperature

• PCSTestr 35 (Eutech PCSTEST35-01X441506 / Oakton 35425-10)

pH / Conductivity / Total Dissolved Solids / Salinity / Temperature

Getting Started:

Your instrument has been factory calibrated and usually works well out of the box. However, after

best accuracy.

Your Testr begins in the measuring mode that was previously used. Just prior to measurement or
when switching modes, you will see the setting associated with each parameter i.e.) pH (buffer
group selected), Conductivity (Auto), TDS (factor), Salinity (unit of measure).

extended periods of non-use, it’s best to remove the sensor cap and soak the
sensor (pictured here) in warm tap water or pH buffer for 10 minutes or so. A
brief rinse with deionized (DI) water is OK, but avoid soaking or storing in
deionized water as this will shorten the pH electrode life. Prior to taking
measurements, periodic calibration with certified standards is recommended for

Setup:

Your Testr allows customization of various settings. To access the setup mode:

1. With the Testr off, keep the

(Setup) will appear, then as you release , (Parameter) will appear.

2. Press

menu.

3. Press

*IMPORTANT*

or to choose (Parameter Setup) or (System Setup)

to enter the selected setup menu.

It is necessary to save your Parameter and System

changes in order for them to take effect.

1. When you are finished making your desired changes, press both and at the same

time and keep them pressed until you see “SA” (Save) on the display.

2. With the primary display “SA” and secondary display “YES”, press

changes. The instrument will resume measurement mode with new setting(s).

pressed down while you press and release .

to save the

Note: If auto-shut off is used, changes will be automatically saved 8.5 minutes after the last

change was made.

Parameter Setup:

Select to make changes relating to the
parameters – pH, Conductivity TDS, Salinity. Note: only the PCS Testr will have all of
these options. See below for menus available from each parameter. To Navigate the
menus:

 Press
 Press

to select or confirm the displayed option.

or to scroll thru options or change values.

pH Options:

 USA or NIST Buffer Group for calibration buffer option.

 5-pt calibration (all points) or 3-pt calibration (middle three points only).

Salinity (SALt) Option (PCS Testr only)

 Choose PPt (parts per thousand) or Per (percentage %) as unit of measure.

Total Dissolved Solids (tDS) Option (PT and PCS Tester only)

 FACt factor the instrument uses to convert from conductivity to TDS value.

Adjustable from 0.40 to 1.00 (default factor is 0.71).

Conductivity Options (PC and PCS Tester only)

 A.Cal (Automatic Calibration) Choose YES or NO (manual).

TIP: The PC Testr 35 and PCS Testr 35 are capable of automatic or manual

conductivity calibration. In automatic calibration mode, the meter will automatically
choose one of (3) conductivity calibration standards depending on the ranges listed
below. If you will only use 84

µS, 1413 µS, or 12.88 mS calibration standards,

automatic calibration is a time saving option. If you intend to calibrate with one or more
standards that are not listed below, choose “NO” which will disable auto calibration and
allow you to enter your desired value manually.

Conductivity Range Automatic Calibration Value Available with

0.0 – 200.0 µS 84 µS PCS only
201 – 2000 µS 1413 µS PC or PCS

2.01 – 20.00 mS 12.88 mS PC or PCS

 SPC (Single-Point Calibration) Choose YES or NO (multi-point calibration).

TIP: The PC Testr 35 and PCS Testr 35 are capable of single or multi-point conductivity

calibration. Use Single-Point Calibration to apply a single calibration value across all
ranges. Use Multi-Point Calibration for individual calibration in each range. This will
restrict an individual calibration so that it is applied to one range only. When using
multi-point calibration, perform a calibration in each range that you expect to use for
best results.

System Setup:

Select to make changes relating to the system. See below for available menus.
Note: other than changing Temperature units, it is advised to keep the factory default
settings for best results. To Navigate the System menus:

 Press

to select or confirm the displayed option.

 Press or to scroll thru menu options or change values.
 Unit rSt (Instrument reset)

 PH (pH) or EC (electrical conductivity / TDS / Salinity)
 CAL (calibration reset) or FCt (Reset to factory default settings)

 Set A.Off (Automatic shut off after 8.5 minutes) Choose YES or NO.
 Set t.C (Temperature Coefficient) 0.0-10.0% (2.1% is default)
 Set AtC (Auto Temperature Compensation) Choose YES or NO (25°C is used).
 Set °C °F (select temperature units) Choose °Celsius or °Fahrenheit.

Temperature Calibration:

The factory temperature calibration should last for the life of the original sensor since it
doesn’t normally drift. Temperature calibration is always recommended upon sensor
replacement. It may also be desirable to adjust the temperature to match a certified
accurate thermometer or another Testr. The temperature value is common to all
parameters so only one calibration is needed. To perform temperature calibration:

1. Press

to turn on meter. Place the reference thermometer and your Testr

into the same sample. Allow enough time for both to stabilize.

2. Press as needed to select the pH measuring mode. Press to begin pH

calibration mode.

3. Press for 5 seconds to begin temperature calibration mode. The current

temperature will be displayed on top while the factory default temperature is
below.

4. Press

or to manually adjust to the desired temperature—up to ± 5°

C or ± 9° F of the factory default value.

5.

Press to confirm and return to the pH measuring mode.

pH Calibration:

For best results, calibrate with certified accurate pH calibration standards (buffers). You may calibrate up to five points with the USA (1.68, 4.01, 7.00, 10.01, 12.45) or the NIST (1.68, 4.01, 6.86, 9.18, 12.45) buffer group.

1. Press

2. Rinse the sensor with clean water. Immerse the sensor into your pH buffer and

press
secondary display should search for and lock on the closest automatic calibration
value.

3. Allow the primary display to stabilize, then press

value. The primary value will blink briefly before the secondary value automatically
scrolls thru the remaining pH buffers available for calibration.

4. Repeat steps 2 & 3 with additional buffers or press to return to

measurement mode.

to turn meter on and to select pH mode as needed.

. The primary display will show the un-calibrated pH value, while the

to confirm the calibration

Conductivity Calibration (Automatic):

For best results, calibrate with certified accurate conductivity calibration standards.
Selection of multi-point calibration will allow up to three of the following values, while
Single-point calibration will allow only one; choose 84 μS, 1413 μS, or 12.88 mS.

Conductivity Range Automatic Calibration Value Available with

0.0 – 200.0 µS 84 µS PCS only
201 – 2000 µS 1413 µS PC or PCS

2.01 – 20.00 mS 12.88 mS PC or PCS

1. Press

2. Rinse the sensor with clean water. Immerse the sensor into your standard and

press
secondary display display should search for and lock on the closest automatic
calibration value.

3. Allow the primary display to stabilize, then press

value. The primary value will blink briefly before returning to measurement mode.

4. Repeat steps 2 & 3 with additional calibrations standards if desired.

to turn meter on and to select conductivity mode as needed.

. The primary display will show the un-calibrated value, while the

to confirm the calibration

Conductivity, TDS, & Salinity Calibration (Manual):

For best results, calibrate with certified accurate calibration standards. 1 point per
range.

Conductivity (3-pt) TDS (3-pt) Salinity (1-pt)

0.0 – 200.0 µS*
201 – 2000 µS

0.0 – 99.9 ppm*
100 – 999 ppm

1.00 – 10 ppt

2.01 – 20.00 mS 1.00 – 10 ppt

*Range only available with PCS Testr 35

1. Press to turn meter on and to select conductivity, TDS, or salinity

mode.

2. Rinse the sensor with clean water. Immerse the sensor into your standard and

press
secondary display will display the factory default calibration.

3. Press or to manually adjust the primary display to your calibration

standard.

4. Press

before returning to measurement mode.

5. Repeat steps 2 & 3 with additional calibration standards if desired.

. The primary display will show the un-calibrated value, while the

to confirm the new adjusted value. The primary value will blink briefly

Hold Function:

For prolonged observation of a reading, press during measurement mode to
freeze the display. The “HOLD” indicator will display when the reading is held. To

release the held value and resume live measurement, press .

Sensor Replacement:

Your instrument includes a replaceable sensor (Eutech PCSENSOR - 01X097108 /
Oakton 35425-50). If the tip gets damaged or as the sensor wears over time, the
entire sensor can easily be replaced. To remove the old sensor, simply twist off the
ribbed collar and pull the sensor straight out.

To install the new sensor, line up the tabs and 8 pins of the
sensor to the instrument body. Twist ribbed collar back on to
keep waterproof rating and secure sensor. The O-rings
should create a watertight seal and provide some resistance
when twisting.

Battery Replacement:

Your Testr includes (4) 1.5V alkaline batteries. LR44 or A76 battery types are suitable

and commonly available. Replace all (4) batteries together.
Waiting too long to replace the batteries can lead to inaccurate
readings and is the most common cause of problems. Twist and
unscrew to remove the battery cover at the top of the Testr. Pull

on the white ribbon to remove the batteries. Note the correct
polarity of the instrument before installing. The flat side of the battery is +. Place new
batteries on top of the white ribbon so they can be easily removed next time. Hand
tighten the battery cover to keep waterproof rating.

Storage:

The sensor does not require special storage. Rinse with clean water after use and
cover the sensor with the included cap. Keep at room temperature away from extreme
temperatures. The sensor can easily be re-hydrated by soaking if stored dry.

Message Indicates

>75% battery life remaining

50-75% battery life remaining

25-50% battery life remaining

No bars & blinking = replace batteries

Err

Unstable pH reading

/ Slow response

“Ur” (Under range)

or

“Or” (Over range)

Meter not responsive If “Hold” on display, press Hold key to resume live measurement.

Secondary display

continually scrolls

Calibration error, usually attempting to calibrate to a value which is
out of range or under range.

Broken or dirty sensor. Clean, rehydrate, and replace if necessary.
Could also be due to low battery condition or sample with
temperature that has not stabilized.

Measured value is out of range. Most often caused by dry electrode
that needs to be re-hydrated / soaked. Sensor may not be
completely submersed or is not connected to Testr body properly.

The automatic calibration standard is not within expected calibration
range. Use fresh standard or an alternate calibration standard.

Warranty:

The waterproof Testrs are warranted to be free from manufacturing defects for 1 year
and the electrode module is warranted for 6 months, unless otherwise stated. If repair,
adjustment or replacement is necessary and has not been the result of abuse or
misuse within the time period specified, please return the tester – freight prepaid –
and correction will be made without charge. Out of warranty products will be repaired
on a charge basis.

Return of Items:

Authorization must be obtained from your distributor before returning items for any
reason. When applying for authorization, please include information regarding the
reason the item(s) are to be returned. Note: We reserve the right to make
improvements in design, construction and appearance of products without notice.
Prices are subject to change without notice.

For more information on our products, please contact us or visit our websites:

Oakton Instruments
625 E Bunker Court
Vernon Hills, IL 60061, USA
Tel: [phone]
Fax: [phone]

[e-mail]
www.4oakton.com

Eutech Instruments Pte Ltd
Blk 55, Ayer Rajah Crescent,
#04-16/24, Singapore 139949
Tel: [phone]
Fax: [phone]

[e-mail]
www.eutechinst.com