SLS LAB PRO LSL0700 User manual

Contents
Chapter 1 ................................................................5
Introduction ....................................................5
1.1 Intended Use........................................5
1.1.1 Intended Use: ............................................5
1.1.2 Non-Intended Use: ....................................5
1.1.3 Safety: .......................................................5
1.1.4 Power Connection: ....................................5
1.2 Cleaning Instructions (Meter Only).........5
Chapter 2 ................................................................6
Getting Started ...............................................6
2.1 Keypad Functions ................................6
2.2 Display Functions .................................6
2.3 Meter Connections...............................7
Chapter 3 ................................................................8
Setup Functions..............................................8
3.1 P1.0 CAL (Calibration)...................................8
3.2 P2.0 ELE (Electrode Information)...................8
3.3 P3.0 ConF (Configuration).............................8
3.4 P3.1 rdY (Ready / Stability Indicator) .............8
3.5 P3.2 ºCºF (Celsius Or Fahrenheit)..................8
3.6 P3.3 buFF (pH Buffers & Calibration Points) ..8
3.7 P4.0 rSt (Reset) ............................................8
3.8 P5.0 CLr (Clear Memory)...............................8
Chapter 4 ................................................................9
Calibration ......................................................9
4.1 pH Calibration ......................................9
4.2 Temperature Calibration .......................9
4.3 Millivolt (mV) Offset Adjustment ...........10
Chapter 5 ..............................................................11
Storing and Recalling Data............................11
Chapter 6 ..............................................................12
Troubleshooting Guide..................................12

Chapter 7 ..............................................................13
Specifications ...............................................13
7.1 Meter Specifications ...........................13
7.1.1 Environmental Conditions ........................13
7.2 Warranty ............................................13
Chapter 8 ..............................................................14
Regulatory Compliance.................................14
European Union................................................14
UK Conformity Assessed ..................................14
Product Safety..................................................14
Electromagnetic Compatibility...........................14
FCC Statement (USA) .....................................14
Canadian ISED IC Notice ................................14
Environmental Compliance................................14
REACH - Europe ............................................14
RoHS - Europe ...............................................14
WEEE Compliance..........................................15

pH Meter Manual 5
Chapter 1
Introduction
Thank you for purchasing the pH benchtop meter. These
microprocessor-based meters are economical and simple
to use. The design incorporates a large LCD for clear
viewing and offers a small footprint to conserve space. The
pH meter measures pH, mV (ORP) and temperature in ºC
or ºF. Each meter includes a convenient slide-out card for
quick reference.
1.1 Intended Use
1.1.1 Intended Use:
This device is a benchtop laboratory meter intended for
use in a typical, indoor, controlled, laboratory environment.
This device should only be used in accordance with these
instructions.
1.1.2 Non-Intended Use:
This device is not a Medical Device. It is not intended to be
used to diagnose, treat, cure, or prevent disease.
1.1.3 Safety:
CAUTION
: Before using or maintaining
this product, please be sure to read the
manual carefully. Failure to follow these
instructions may cause the product to
malfunction.
CAUTION: Use this product only in the
way described in the product literature
and in this manual. Before using it, verify
that this product is suitable for its intended
use. If the equipment is used in a manner
not specified by the manufacturer, the
protection provided by the equipment may
be impaired.
CAUTION
: Do not modify system
components. Use OEM exact replacement
equipment or parts. Before use, confirm
that the product has not been altered in
any way.
WARNING
: Unauthorized repair of your
unit will invalidate your warranty.
1.1.4 Power Connection:
•Unpack the power supply provided with your
meter
•Select the appropriate plug attachment for
connecting to an AC power outlet
•Attach to power supply and ensure it is properly
seated in the power supply
•Connect the power supply to a nearby electrical
outlet
•Connect the power supply output connector to the
power supply input connector on the rear panel of
the meter
•You are now ready to turn on the meter
1.2 Cleaning Instructions
(Meter Only)
Wipe the exterior surfaces (except the display panel) using
a lint free cloth dampened in clear water.
Wipe the display panel with a clean microfiber cloth
dampened with clear water taking caution to wipe lightly to
avoid scratching the meter display.

6 Chapter 2 | Getting Started
Chapter 2
Getting Started
2.1 Keypad Functions
Icon
Function
Powers the meter on and off. Upon power
on, the meter automatically begins in the
mode that was last used. Calibration and
memory values are retained even if meter is
unplugged.
Toggle between available measurement
modes: pH/temperature or mV/temperature.
Also used to switch from pH to temperature
during pH calibration mode.
Press and hold for 5 seconds to enter
SETUP mode.
Toggles between measurement and
calibration modes.
In SETUP mode, returns user to the
measurement mode.
MI
(Memory Insert) stores values into
memory.
Increase value. Scroll up in SETUP mode.
MR (Memory Recall) recalls values from
memory
Decrease value. Scroll down in SETUP
mode.
Freezes measured reading. Press again to
resume live reading.
Confirms calibration values in CAL mode.
Confirms selections in SETUP mode.
View recalled values in memory mode.
2.2 Display Functions
Icon
Function
Setup Mode
Measurement Mode
Calibration Mode
Memory Mode or when data is stored into
memory
Measured value is stable
Measured value is held
In SETUP mode, select Auto Hold ON,
Ready ON or Ready OFF
Error or invalid key pressed
Prompts user to select buffer
Electrode error when appears with ERR
Current measurement unit / mode of
operation
Automatic Temperature Compensation is
active
Primary
Reading
Secondary
Reading
During pH calibration,
secondary reading is the
auto recognized pH
buffer standard value

pH Meter Manual 7
2.3 Meter Connections
Input
Function
pH BNC connection for pH or ORP (redox) electrodes
REF
Pin connection for half-cell reference electrodes;
requires separate half-cell BNC electrode
Note:
REF is not commonly used and is not
required
ATC
For Automatic Temperature Compensation
electrode
DC Power supply

8 Chapter 3 | Setup Functions
Chapter 3
Setup Functions
Use the SETUP mode to customize your instrument
operation. During measurement, press and hold the MODE
key for 5 seconds to enter the SETUP mode.
Press the /MI or /MR keys to change programs or
change options.
Press the ENTER key to select the program or confirm
selection.
Press the CAL/MEAS key to go back a level or to return to
measurement mode.
3.1 P1.0 CAL (Calibration)
Press the ENTER key to view each stored calibration point.
3.2 P2.0 ELE (Electrode
Information)
Press the ENTER key to view mV offset (OFS) in mV and
pH modes only.
Press the ENTER key to view % slope (SLP) in pH mode
only.
Last Display
Mode
Electrode Property
Offset
Slope
pH
In mV
%
mV
In mV
---
Note: When multiple slopes exist, the slope that is available
to view will depend on the measured value before entering
SETUP mode.
For example, if pH calibration values pH 4.01, 7.00 and
10.01 were completed, there will be two slope values; one
that corresponds to pH values below 7.00 and another
that corresponds to pH values above 7.00. If the measured
pH value was 5.23 when setup mode was entered, the pH
slope that corresponds to values lower than 7.00 will be
available to view. If no calibration is stored, the offset will
be 0.0 mV and the slope is 100%.
3.3 P3.0 ConF (Configuration)
Press the ENTER key.
3.4 P3.1 rdY (Ready / Stability
Indicator)
Press the ENTER key.
Press the /MI or /MR keys to choose READY “On”,
READY “OFF” or Auto HOLd.
Press the ENTER key to confirm.
3.5 P3.2 ºCºF (Celsius Or
Fahrenheit)
Press the ENTER key.
Press the /MI or /MR keys to select ºC or ºF.
Press the ENTER key to confirm.
3.6 P3.3 buFF (pH Buffers &
Calibration Points)
Press the ENTER key.
Press the /MI or /MR keys to select “USA” or “NIST”
buffer group (pH mode only).
Press the /MI or /MR keys to select number of
calibration points (pH and ion modes).
Press the ENTER key to confirm.
3.7 P4.0 rSt (Reset)
Press the ENTER key.
Press the /MI or /MR keys to select “Yes” or “No”.
If “Yes”, press the /MI or /MR keys to select “Cal”
(calibration reset only) or “FCt” (complete reset to factory
default settings).
Press the ENTER key to confirm.
3.8 P5.0 CLr (Clear Memory)
Press the ENTER key.
Press the /MI or /MR keys to select “Yes” (erase
memory) or “No”.
Press the ENTER key to confirm.

pH Meter Manual 9
Chapter 4
Calibration
4.1 pH Calibration
For best results, periodic calibration with known accurate
standards is recommended. Calibrate with standards that
bracket your intended measuring range while including a
neutral standard (pH 7.00 or 6.86). For example, if you
expect to measure samples from pH 6.2 to pH 9.5,
calibration with 4.01, 7.00, and 10.01 will work well.
Calibrate with up to 5 buffers. The non-volatile memory
retains all calibration values upon meter shut down.
The following calibration standards are automatically
recognized.
USA buffer group: 1.68, 4.01, 7.00, 10.01, 12.45
NIST buffer group: 1.68, 4.01, 6.86, 9.18, 12.45
See Section 5.6 to change the buffer group.
1. Press the MODE key as needed to select pH.
2. Dip the pH electrode into pH buffer and press the
CAL/MEAS key. The secondary display will lock
on the appropriate buffer value. Provide stirring for
best results. When the READY indicator appears,
press the ENTER key to accept. The primary
reading will flash briefly before the secondary
display begins scrolling the remaining available
buffers.
3. Rinse the pH electrode then dip into the next pH
buffer. The secondary display will lock on the
appropriate buffer value. When the READY
indicator appears, press the ENTER key to
accept. The primary reading will flash briefly then
display the percent efficiency (slope) before the
secondary display begins scrolling the remaining
available buffers.
4. To calibrate another buffer repeat step 3 or press
the CAL/MEAS key to return to the measurement
mode.
Note: The meter will automatically return to measurement
mode upon successful completion of the number of
specified calibration points. To specify a different number
of pH calibration points, see Section 5.6.
Additional Notes:
•A single point (offset) calibration is only allowed
with pH 7.00 or pH 6.86 buffers.
•When the first calibration value is accepted during
a new calibration, all prior calibration values are
erased.
•Press the CAL/MEAS key at any time to abort
calibration and return to measurement mode.
4.2 Temperature
Calibration
The thermistor sensor used for automatic temperature
compensation and measurement is both accurate and
stable, so require frequent calibration is not required.
Temperature calibration is recommended upon ATC
electrode replacement, whenever the temperature reading
is suspect, or if matching against a certified thermometer is
desired.
1. Connect the temperature probe to the meter and
place into a solution with a known accurate
temperature such as a constant temperature bath.
Note: To adjust the manual temperature
compensation (MTC) value, do not connect the
temperature probe.
2. Press the MODE key as needed to select pH or
mV/R.mV.
3. Press the CAL/MEAS key followed by the MODE
key. The primary display shows the measured
temperature while the secondary display shows
the factory default temperature.
4. Adjust the temperature using the /MI or /MR
keys. Press the ENTER key to accept or the
CAL/MEAS key to cancel. The meter allows an
adjustable maximum value of ± 5ºC (or ± 9ºF) from
the factory default temperature.

10 Chapter 4 | Calibration
4.3 Millivolt (mV) Offset
Adjustment
Oxidization Reduction Potential (ORP or Redox) is not a
precise measurement but is useful as a relative indicator.
As such, mV offset adjustment is not meant to enhance
accuracy, but rather to make readings comparable to a
reference. Commercial ORP solutions are often used as a
check standard in which a meter/electrode system are
verified to be close to a given value, instead of being used
as a calibration standard in which adjustments are made to
match the ORP value.
1. Connect an ORP electrode and press the MODE
key as needed to select mV or R.mV.
2. Dip the ORP electrode into a solution with a
known mV value (i.e. Zobel, Light’s, quinhydrone,
or iodide triiodide) and stir.
3. Press the CAL/MEAS key when the reading is
stable. The primary display shows the relative
millivolt value (R.mV) while the secondary display
shows the factory default mV value.
4. Adjust the R.mV value using the /MI or /MR
keys. Press the ENTER key to accept or the
CAL/MEAS key to cancel. The meter allows an
adjustable maximum value of ± 150 mV from the
factory default mV value.
Note: When an offset has been stored successfully, R.mV
replaces mV.

pH Meter Manual 11
Chapter 5
Storing and
Recalling Data
The pH meter can retain up to 100 points into memory for
later retrieval.
1. In the measurement mode, press the /MI key to
insert the measured value into memory. The stored
memory location value (StO) is briefly displayed.
2. To recall data from memory, press the /MR key.
The location of the most recent stored data is
displayed first. Press the /MI or /MR keys to
select the location of the desired data, then press
the ENTER key to accept.
3. Press the ENTER key to return to the stored data
location. Press the CAL/MEAS key to return to
measurement mode. To erase stored data, see
Section 5.8.

12 Chapter 6 | Troubleshooting Guide
Chapter 6
Troubleshooting
Guide
Problem
Cause
Solution
No display
Main power not
switched on.
Switch on the power
supply.
AC adapter not
inserted properly.
Re-insert AC
adapter and press
POWER key.
Unstable
reading
Insufficient solution
in electrode.
Fill electrode with fill
solution.
Broken electrode.
Replace electrode.
External noise or
induction (for
example, electrical
noise from nearby
motor).
Remove or switch
off interfering device.
Dirty electrode.
Clean and rehydrate
the electrode.
Slow
response
Dirty electrode.
Clean and rehydrate
the electrode.
Meter not
responding to
key press
HOLD mode in
operation.
Press the HOLD key
to deactivate. Use
SETUP mode to
disable Auto Hold.
Bad keypad.
Contact Support.
From any
screen “ERR”
icon shown
Invalid key: key
does not work in
the current
operation mode.
Press alternate key.
Select valid buttons
depending on mode.
pH CAL
mode “ERR”
icon shown
Calibration
attempted using
only 1-point that
was not pH 7.00
or pH 6.86.
Recalibrate using 2
or more pH points or
use pH 7.00 or use
pH 6.86.
“ERR” icon
shown with
Electrode
icon
Calibration error.
Buffer value does
not match value
displayed or
electrode is
disconnected or
failing.
Use fresh buffer
solutions.
Check electrode
connection.
Clean and
recondition
electrode.
Replace electrode.
Problem
Cause
Solution
Ur (Under
range)
Or (Over
range)
Measured value is
out of range.
Electrodes not
connected.
Make sure electrode
is connected.
Electrode clogged,
dirty or broken.
Clean or replace
electrode.
Meter not
calibrated.
Recalibrate the
meter.
Wrong temp value.
Treat samples to
bring within meter
measuring range.
Reset meter.

pH Meter Manual 13
Chapter 7
Specifications
7.1 Meter Specifications
pH Range -2.00 to 16.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.01 pH
pH Calibration Points
Up to 5 points with Auto-
Buffer Recognition
pH Buffer Options
USA: pH 1.68, 4.01, 7.00,
10.01,12.45
NIST: pH 1.68, 4.01, 6.86,
9.18 ,12.45
Slope Display Yes (with offset)
mV Range ±2000 mV
mV Resolution
0.1 mV (±199.9 mV),
1 mV beyond
±
200 mV
mV Accuracy
±0.2 mV (±199.9 mV),
±2 mV beyond ±200 mV
mV Offset Adjustment Up to ±150 mV
Temperature Range
0.0 to 100.0 ºC
32.0 to 212.0 ºF
Temperature Resolution 0.1 ºC / 0.1 ºF
Temperature Accuracy
±0.3 ºC
±
0.5 ºF (0 to 70 ºC)
Temperature
Compensation
Automatic or Manual (0 to
100 ºC, 32 to 212 ºF)
Temperature Calibration
Offset in 0.1 º increments;
Offset range: ±5.0 ºC,
±
9.0 ºF
Memory 100 data sets
Inputs
BNC, ATC, Reference
(Half-cell)
Certifications
CE, UKCA, cTUVus,
FCC Class A
Power
AC/DC 9V, 6W Adapter
(100/240 VAC, 50-60Hz)
Weight 0.65 kg, 1.4 lbs.
7.1.1 Environmental Conditions
Environmental Conditions Indoors
Altitude Up to 2,000 Meters
Temperature 5°C to 45°C
Relative Humidity 0 to 80%RH
Mains Fluctuation
±10% of range (100-
240VAC)
Installation Category II
Pollution Degree 2
Protection Class III
Storage Temperature 5°C to 45°C
7.2 Warranty
This meter is supplied with a warranty against significant
deviations in material and workmanship for a period of
three (3) years from date of purchase.
If repair or adjustment is necessary and has not been the
result of abuse or misuse within the designated period,
please return – freight pre-paid – and correction will be
made without charge.
Out of warranty products will be repaired on a charged
basis.
The warranty on your instrument shall not apply to defects
resulting from:
•Improper or inadequate maintenance by customer
•Unauthorized modification or misuse
•Operation outside of the environment
specifications of the products

14 Chapter 8 | Regulatory Compliance
Chapter 8
Regulatory
Compliance
European Union
The European voltage models of this product meet all the
applicable requirements of the European Directives and
therefore display the CE Marking. These Directives include
those captured in the EU Declaration of Conformity. The
most current EU Declaration of Conformity may be
obtained from the manufacturer.
UK Conformity Assessed
The European voltage models of this product meet all the
applicable requirements of the UK Conformity Assessed
and therefore display the UKCA Marking.
Product Safety
This product family has been tested to applicable product
standards by TUV SUD a Nationally Recognized Test
Laboratory (NRTL).
Electromagnetic Compatibility
FCC Statement (USA)
Any changes or modifications not expressly approved by
the party responsible for compliance could void the user’s
authority to operate the equipment.
Note: This equipment has been tested and found to
comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference
when the equipment is operated in a commercial
environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may
cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Canadian ISED IC Notice
This ISM digital apparatus complies with Canadian ICES-
001.
Cet appareil ISM est conforme á la norme NMB-001 du
Canada.
Environmental Compliance
REACH - Europe
We are committed to meeting all compliance obligations to
evaluate, communicate, and register any Substances of
Very High Concern (SVHC), and finding alternates where
appropriate.
RoHS - Europe
We are determined to reduce the impact we have on the
environment, and so can declare that this product fully
complies with the European Parliament’s RoHS2
(Restriction of Hazardous Substances) Directive
2011/65/EU, with respect to all the following substances:
•Lead (0,1 %)
•Mercury (0,1 %)
•Cadmium (0,01 %)
•Hexavalent chromium (0,1 %)
•Polybrominated biphenyls (PBB) (0,1 %)
•Polybrominated diphenyl ethers (PBDE) (0,1 %)
Our compliance is witnessed by written declaration from
our suppliers and/or component testing. This confirms that
any potential trace contamination levels of the substances
listed above are below the maximum level set by the latest

pH Meter Manual 15
regulations or are exempt due to their application.
WEEE Compliance
WEEE Compliance. This product is required to comply with
the European Union’s Waste Electrical & Electronic
Equipment (WEEE) Directive 2012/19/EU. It is marked with
the following symbol.
WEEE Konformittät. Dieses Produkt muss die EU Waste
Electrical & ElectronicEquipment (WEEE) Richtlinie
2012/19/EU erfüllen. Das Produkt ist durch folgendes
Symbol gekennzeichnet.
Conformità WEEE. Questo prodotto deve rispondere alla
direttiva dell’ Unione Europea 2012/19/EU in merito ai
Rifiuti degli Apparecchi Elettrici ed Elettronici (WEEE). Rifiuti
degli Apparecchi Elettrici ed Elettronici (WEEE). marcato
col seguente simbolo.
Conformité WEEE. Ce produit doit être conforme à la
directive euro-péenne (2012/19/EU) des Déchets
d’Equipements Electriques et Electroniques (DEEE). Il est
marqué par le symbole suivant.

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