Hach sensION+ MM374 ユーザーマニュアル

DOC022.97.90253

sensION

™

+ MM374

12/2013, Edition 4

User Manual

Manuel d'utilisation

Manual del usuario

Manual do Usuário

用户手册

取扱説明書

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English...................................................................................................................................................................................................3

Français..............................................................................................................................................................................................23

Español...............................................................................................................................................................................................44

Português..........................................................................................................................................................................................65

中文.......................................................................................................................................................................................................85

日本語................................................................................................................................................................................................103

한글.....................................................................................................................................................................................................123

ไทย........................................................................................................................................................................................................143

2

Table of contents

Specifications on page 3 Advanced operation on page 12

General information on page 4 Data logger on page 13

Installation on page 5 Maintenance on page 15

User interface and navigation

on page 8

Troubleshooting on page 17

Startup on page 9 Replacement parts and accessories

on page 18

Standard operation on page 9 Standard solutions on page 19

Specifications

Specifications are subject to change without notice.

Specification Details

Dimensions 35 x 20 x 11 cm (13.78 x 7.87 x 4.33 in.)

Weight 1100 g (2.43 lb)

Meter enclosure IP42

Power requirements

(external)

100–240 V, 0.4 A, 47-63 Hz

Meter protection class Class II

Pollution degree 2

Installation category Category II

Altitude requirements Standard 2000 m (6562 ft) ASL (Above Sea Level)

Storage temperature –15 to +65 °C (5 to +149 °F)

Operating temperature 0 to 40 °C (41 to 104 °F)

Operating humidity < 80% (non-condensing)

Specification Details

Resolution pH: 0.1/0.01/0.001, ORP: 0.1/1 mV, ISE:

programmable, temperature: 0.1 ºC (0.18 ºF), EC:

variable, resistivity: variable, NaCl: variable, TDS:

variable

Measuring error (±

1 digit)

pH: ≤ 0.005, ORP: ≤ 0.2 mV, temperature: ≤ 0.2 ºC (≤

0.36 ºF), EC: ≤ 0.5%, resistivity: ≤ 0.5 %, NaCl: ≤

0.5 %, TDS: ≤ 0.5%

Reproducibility (±

1 digit)

pH: ± 0.001, ORP: ± 0.1 mV, temperature: ± 0.1 ºC (±

0.18 ºF), EC: ± 0.1%, resistivity: ± 0.1%, NaCl ± 0.1%,

TDS ± 0.1%

Data storage 330 results and last 9 calibrations

Connections 2 Combined or indicator probe: BNC connector (Imp.

>10

12

Ω); 2 Reference electrodes: banana connector;

A.T.C. type Pt 1000: banana or telephonic; 2 magnetic

stirrers: RCA connector

Conductivity probe with built-in Pt1000 sensor (or NTC

10 kΩ probe): telephonic connector

RS232C for printer or PC: telephonic connector;

external PC keyboard: mini DIN connector

Temperature correction Channel 1 pH: Pt 1000 temperature probe (A.T.C.),

NTC 10 kΩ probe, manual, Channel 2 temperature,

isopotential pH programmable, standard value 7.00,

CE: Pt 1000 temperature probe (A.T.C.), linear

function, TC=0.00 to 9.99%/Temperature, TRef: 20°C

(68 °F) or 25°C (77 °F), non-linear function for natural

waters (UNE EN 2788) Channel 2 pH: Pt

1000 temperature probe (A.T.C.), manual, NTC 10KΩ

probe, isopotential pH programmable, standard value

7.00

Measurement display

lock

Continuous measurement, by stability, by time

Display Liquid crystal, backlit, 128 x 64 dots

Keyboard PET with protective treatment

Certification CE

English 3

General information

Revised editions are found on the manufacturer’s website.

Safety information

N O T I C E

The manufacturer is not responsible for any damages due to misapplication or

misuse of this product including, without limitation, direct, incidental and

consequential damages, and disclaims such damages to the full extent permitted

under applicable law. The user is solely responsible to identify critical application

risks and install appropriate mechanisms to protect processes during a possible

equipment malfunction.

Please read this entire manual before unpacking, setting up or operating

this equipment. Pay attention to all danger and caution statements.

Failure to do so could result in serious injury to the operator or damage

to the equipment.

Make sure that the protection provided by this equipment is not impaired.

Do not use or install this equipment in any manner other than that

specified in this manual.

Use of hazard information

D A N G E R

Indicates a potentially or imminently hazardous situation which, if not avoided, will

result in death or serious injury.

W A R N I N G

Indicates a potentially or imminently hazardous situation which, if not avoided,

could result in death or serious injury.

C A U T I O N

Indicates a potentially hazardous situation that may result in minor or moderate

injury.

N O T I C E

Indicates a situation which, if not avoided, may cause damage to the instrument.

Information that requires special emphasis.

Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or

damage to the instrument could occur if not observed. A symbol on the

instrument is referenced in the manual with a precautionary statement.

This symbol, if noted on the instrument, references the instruction

manual for operation and/or safety information.

Electrical equipment marked with this symbol may not be disposed of

in European domestic or public disposal systems. Return old or end-

of-life equipment to the manufacturer for disposal at no charge to the

user.

Product overview

The sensION

™

+ meters are used with probes to measure various

parameters in water.

The sensION

™

+ MM374 meter has two measurement channels to

measure pH, ORP (mV), conductivity or ISE (concentration) with a

selective probe. Channel 1 measures one or two parameter individual or

simultaneously and up to two probes can be connected. Channel

2 measures pH, ORP (mV) or ISE. Measurement data can be stored and

transferred to a printer or PC.

Product components

Refer to Figure 1 to make sure that all components have been received.

If any items are missing or damaged, contact the manufacturer or a

sales representative immediately.

4

English

Figure 1 Meter components

1 Electrolyte for the probe 6 Power supply

2 Buffer solutions (pH 4.01 and pH

7.00)

7 Probe holder

3 Calibration beakers (with magnetic

bar inside)

8 Rod

4 Standard solution (1413 µS/cm) 9 Probes (included with kits only)

5 Calibration beaker (with magnetic

bar inside)

10 Meter

Installation

Assemble the probe holder

Follow the numbered steps to assemble the probe holder and to connect

the magnetic stirrer.

English 5

1 2

3 4

6 English

Connect to AC power

D A N G E R

Electrocution hazard. If this equipment is used outdoors or in

potentially wet locations, a Ground Fault Circuit Interrupt (GFCI/GFI)

device must be used to connect the equipment to its main power

source.

The meter can be powered by AC power with the universal power

adapter.

1. Select the correct adapter plug for the power outlet from the adapter

kit.

2. Connect the universal power adapter to the meter (Figure 2).

3. Connect the universal power adapter to an AC receptacle (Figure 3).

4. Turn the meter on.

Figure 2 Connector panel

1 Magnetic stirrer 1 connector,

Channel 1

7 PC keyboard, mini DIN connector

2 Reference electrode (separated

electrodes) connector, Channel 1

8 Conductivity probe connector,

Channel 2

3 Reference electrode (separated

electrodes) connector, Channel 2

9 Temperature probe connector,

Channel 2

4 Separated temperature probe

connector, Channel 2

10 Combined pH electrode (or

indicator) connector, Channel 2

5 RS-232 for printer or PC connector 11 Combined pH electrode (or

indicator) connector, Channel 1

6 Power supply 12 Magnetic stirrer 2 connector,

Channel 1

English 7

Figure 3 AC power connection

Note: Position the equipment so it is not difficult to disconnect power to the

equipment.

User interface and navigation

User interface

Keypad description

1 RETURN key: cancel or exit the

current menu screen to the

previous menu screen

5 DOWN key: scroll to other options,

change a value

2 MEASUREMENT key: confirm the

selected option

6 ON/OFF: turn on or turn off the

meter

3 UP key: scroll to other options,

change a value

7 LEFT key: change between

Channel 1 and Channel 2, enter

numbers and letters

4 RIGHT key: change between

Channel 1 and Channel 2, enter

numbers and letters

Display description

The meter display shows the concentration, units, temperature,

calibration status, operator ID, sample ID, date and time.

8

English

Figure 4 Single screen display

1 Sample ID 5 Measurement channel

2 Measurement unit and value

(conductivity or ISE)

6 Sample temperature (ºC or ºF)

3 Measurement unit and value (pH,

ORP/mV)

7 Visual measurement timer

4 Measurement mode or time and

date

Navigation

Use the to return to the previous menu. Use the measure key to

take a sample measurement or to confirm options. Use the arrow keys

to scroll to other options or to change a value. To change the

parameters use the arrow keys and . Refer to each task for specific

instructions.

Startup

Turn the meter on and off

N O T I C E

Make sure that the probe is connected to the meter before the meter is turned on.

Push to turn on or turn off the meter. If the meter does not turn on,

make sure that the AC power supply is properly connected to an

electrical outlet.

Change the language

The display language is selected when the meter is powered on for the

first time.

1. Use the or to select a language from a list.

2. Confirm with . The measurement screen shows DATA OUTPUT.

3. Select Deactivated if no printer or PC is connected and confirm.

Refer to Select the data output on page 12 for more information

about Data Output.

Standard operation

Calibration

D A N G E R

Chemical exposure hazard. Obey laboratory safety procedures and

wear all of the personal protective equipment appropriate to the

chemicals that are handled. Refer to the current safety data sheets

(MSDS/SDS) for safety protocols.

Calibration settings

The calibration settings contain Calibration type, Calibration frequency

and Display options.

1. From the main menu use the or to select CALIBRATION.

Confirm.

2. Use the to enter the calibration menu.

3. Use the or to select the following options:

Option Description

Stability C.: Criterion by stability—select Fast, Standard or Strict.

English 9

Option Description

Calibration

type

pH: Calibration type—select Technical buffers,

DIN19266 Buffers, User Buffers, To a X value, data

introduction or Theoretical calibration.EC: Calibration type

—select Molar Standards, Demal Standards, NaCl

Standards, Calibration to a X value, data introduction or

Theoretical calibration. Refer to Calibration types for more

information.

Cal. frequency Calibration reminder—can be set between 0–7 days

(default daily). The display shows the remaining time to

the new calibration. Refer to Set the calibration reminder

on page 11 for more information.

Display mV Display mV—select YES or NO to show mV.

Calibration types

Different calibration types can be selected.

1. From the main menu use the or to select CALIBRATION.

Confirm.

2. Use the to enter the calibration menu.

3. Use the or to select Calibration type.

Option Description

Technical buffers pH 2.00, 4.01, 7.00, 9.21 and 10.01 at 25 °C

(77 °F)

DIN19266 Buffers pH 1.679, 4.006, 6.865, 7.000, 9.180, 10.012 and

12.454

User Buffers Selected when the technical or DIN19266 buffers

are not used. Refer to Technical buffer solutions

(DIN 19267) on page 19 for pH values of

specific buffer sets at varying temperatures.

Calibration to a X value To adjust manually any scale value of the

measured pH or conductivity.

Data introduction Manual probe constant introduction.

Option Description

Theoretical calibration pH: The probe calibration data is replaced at

25 °C (77 °F). EC: The probe calibration data is

replaced with C=1.000 cm

-1

Molar Standards 147 µS/cm, 1413 µS/cm, 12.88 mS/cm and

111.8 mS/cm at 25 °C (77 °F)

Demal Standards 1049 µS/cm, 12.85 mS/cm and 111.31 mS/cm at

25 °C (77 °F)

NaCl Standards 1014.9 µS/cm 25 °C (77 °F)

Calibration procedure

This procedure is for general use with liquid calibration solutions. Refer

to the documents that are included with each probe for additional

information.

Note: Solutions should be stirred during calibration. For more information about the

stirring settings, refer to Change the stirring settings on page 13.

Note: If Channel 1 is used as a double channel (pH and EC) the temperature will

be measured by the conductivity cell with integrated ATC. The conductivity cell

must be immersed in the pH buffer solution as well during the pH calibration.The

manual temperature modification is not possible.

1. Pour the buffers or calibration solutions into the labeled calibration

beakers.

2. From the main menu use the or and and to select the

CALIBRATION parameter. Confirm.

3. If required select the Operator ID (1 to 10) and confirm.

4. Rinse the probe with deionized water and put the probe into the first

calibration beaker. Be sure that there are no air bubbles in the

membrane.

5. Push to Start calibration.

6. Push to measure the first calibration solution.

The next calibration solution is shown.

7. Rinse the probe with deionized water and put the probe into the

second calibration beaker. Be sure that there are no air bubbles in

the membrane.

10

English

8. Push to measure the second calibration solution.

The next calibration solution is shown.

9. Rinse the probe with deionized water and put the probe into the third

calibration beaker. Be sure that there are no air bubbles in the

membrane.

10. Push to measure the third calibration solution.

When the calibration is good, the display briefly shows Calibration

OK and then returns to the main menu.

Note: When a printer is connected the print menu opens and the result can be

printed.

View the calibration data

Data from the most recent calibration can be shown.

1. From the main menu use the or to select DATA LOGGER.

Confirm.

2. Select Display data.

3. Select Calibration data and confirm with . The last calibration data

is shown.

• pH-the slope and offset values are shown alternating with the

deviation (in %) and calibration temperature.

• ORP-the measured mV value and calibration temperature are

shown.

• Conductivity-the cell constant and calibration temperature for each

standard are shown.

Set the calibration reminder

pH: The calibration reminder can be set between 0 to 23 hours or

1-7 days (default 1 day). EC: The calibration reminder can be set

between 0 to 99 days (default 15 days). The display shows the

remaining time to the new calibration.

Note: When 0 days is selected, the calibration reminder is turned off.

1. From the main menu use the or to select CALIBRATION.

Confirm.

2. Use the to enter the calibration menu.

3. Use the or to select Cal. frequency and confirm.

4. Use the and to advance to the next step and use the or to

change a value. Confirm.

Push to start the calibration.

Sample measurements

Each probe has specific preparation steps and procedures for taking

sample measurements.

1. From the main menu use the or and and to select

MEASURE. Confirm.

2. Use the to change the following settings. Confirm every entry.

Option Description

Resolution Select the resolution: 1, 0.1, 0.01 (default) or 0.001

Measure Stability—select By stability Criterion: Fast (variation <

0.02 pH in 6 s), Standard (variation < 0.01 pH in 6 s) or Strict

(variation < 0.002 pH in 6 s). In continuous—enter the time

interval for the In continuous Acquis. interval (data storage or

printing data). By time—enter the time interval for data storage

or printing data.

Display mV Display mV—select YES or NO to show mV.

Limits Limits—select YES or NO. YES: Enter the upper and lower

limits. An acoustic warning appears when the measurement is

out of limit. The report output shows an A next to the

measured value when the measurement was out of limit.

Isopotential Isopotential—change the Isopotential pH value in Data

introduction. Select Calculate to calibrate the probe again.

TC TC—select Linear or Natural waters. Linear: enter a value in

%/°C (default 2.00%/Temperature). Natural waters: Non-linear

for natural waters, according to EN27888

Tref Reference temperature—select between 20 or 25 °C or Other

temperature.

3. Push to start the measurement.

Note: If the measurement is not stabilizing after 120 seconds, the meter turns

automatically into the continuous measurement mode.

English

11

Advanced operation

Change the measurement units

The measurement units can be changed individually for each channel.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Measurement units and confirm.

3. Select Channel 1 and confirm.

4. Select Parameter 1 and then Parameter 2 and select one of the

following options:

Option Description

Parameter 1 mV, pH, ISE or Disabled

Parameter 2 EC, NaCl, TDS, Ω or Disabled

5. Select Channel 2 and confirm with . Select mV, pH or ISE and

confirm.

Use a sample ID

The sample ID tag is used to associate readings with a particular sample

location. If assigned, stored data will include this ID.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Sample ID and confirm.

3. Use the or to select

Option Description

Automatic A consecutive number will be automatically assigned to every

sample.

Manual A keyboard or a barcode scanner is required to enter the

sample ID name before taking a measurement (maximum

15 characters).

Select the data output

Data can be stored or transferred to a printer or to a PC.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Data Output and confirm.

3. Use the or to select

Option Description

Deactivated Select Deactivated if no printer or PC is connected.

For Printer Select Dot matrix printer or Thermal printer.

For Computer Select Terminal, LabCom or LabCom Easy. The LabCom

Software controls several modules, pH and conductivity

meters, automatic burettes, Samplers and so on from a

computer. The LabCom Easy software gets measurements

and calibration data from the meters

Change the date and time

The date and time can be changed from the Date / Time menu.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Date / Time and confirm.

3. Use the and to advance to the next step and use the or to

change a value. Confirm.

The current date and time will be shown on the display.

Adjust the display contrast

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Display contrast and confirm.

3. Use the and to adjust the contrast of the display and confirm.

Adjust the temperature

The temperature measurement can be adjusted at 25 °C (77 °F) and/or

85 °C (185 °F) to increase accuracy.

12

English

1. Put the probe and a reference thermometer in a container of water at

approximately 25 °C and allow the temperature to stabilize.

2. Compare the temperature read by the meter with that of the

reference thermometer. The difference is the adjustment value for

the meter.

Example: reference thermometer: 24.5 °C; meter: 24.3 °C.

Adjustment value: 0.2 °C.

3. Enter the adjustment value for the 25 °C reading:

a. From the main menu use the or to select SYSTEM. Confirm.

b. Use the or to select Readjust temp. and confirm.

c. Select Channel 1 or Channel 2 and confirm. The temperature for

channel 1 is measured by the conductivity cell and channel 2 is

measured by the pH probe. If no Conductivity cell is connected,

the temperature value must be entered manually or the

temperature measured in channel 2 can be applied to the meter.

d. Use the or to select 25 °C and confirm.

e. Use the arrow keys to enter the adjustment value for 25 °C.

Confirm.

4. Put the probe and a reference thermometer in a container of water at

approximately 85 °C and allow the temperature to stabilize.

5. Compare the temperature from the meter with that of the reference

thermometer. The difference is the adjustment value for the meter.

a. Use the or to select 85 °C and confirm.

b. Use the arrow keys to enter the adjustment value for 85 °C.

Confirm.

c. Select Save changes and confirm.

Change the stirring settings

The magnetic stirrer can be turned on and the stirring speed can be

changed in the Stirring menu.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Stirring and confirm.

3. To turn on/off the stirrer push .

4. When the stirrer is turned on, use the or to change the stirring

speed in %.

Note: Use the or to change the stirring speed during calibration and

during a measurement.

Turn the stirrer on or off

The stirrer 1 works with Channel 1 and 2 (Stirrer 1). A second stirrer can

be connected to channel 2 (Stirrer 2). For the stirrer 2 activation refer to

the following steps.

1. From the main menu use the or to select SYSTEM. Confirm

with .

2. Use the or to select Stirrer N.2 and confirm with .

3. Use the or to select YES to turn the stirrer 2 on.

Note: Select NO to turn the stirrer 2 off.

Change the temperature units

The temperature units can be changed to Celsius or Fahrenheit.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Temperature units and confirm.

3. Use the or to select between Celsius or Fahrenheit and confirm.

Data logger

Display data

The Display data log contains Measurement data, Electrode report and

Calibration data. The stored data can be sent to a printer or to a PC.

When the data log becomes full (400 data points), the oldest data point

is deleted when a new data point is added.

English

13

1. From the main menu use the or to select DATA LOGGER and

confirm.

2. Use the or to select Display data and confirm.

3. Use the or to select

Option Description

Measurement data Measurement data—stores automatically each time a

sample is measured

Electrode report Electrode report—stores automatically the electrode

history and measurement conditions

Calibration data Calibration data—stores automatically the current

calibration

Delete data

The entire measurement data or electrode report log can be deleted to

remove data that has already been sent to a printer or PC.

1. From the main menu use the or to select DATA LOGGER and

confirm.

2. Use the or to select Erase and confirm.

3. Use the or to select Measurement data or Electrode report and

confirm. Confirm again to delete the data.

The entire log is deleted at once.

Send data to a printer or to a computer

N O T I C E

The data output (printer or PC) needs to be selected first, so that the Print menu

is available (refer to Select the data output on page 12).

Note: Refer to Report output on page 14 to select the report output type.

1. From the main menu use the or to select DATA LOGGER and

confirm.

2. Use the or to select Print and confirm. Select one of the

following options and confirm with to print the data: Measurement

data, Electrode data, Calibration data, Calibration report or

Instrument condit.

Report output

N O T I C E

The data output (printer or PC) needs to be selected first, so that the Type of

report menu is available (refer to Select the data output on page 12).

Different report output types can be selected when a printer or a PC is

connected.

1. From the main menu use the or to select SYSTEM. Confirm.

2. Use the or to select Type of report and confirm.

3. When a printer or a computer and Terminal is connected, use the

or to select

Option Description

Reduced Select Several or One sample as an output format

14 English

Option Description

Standard Select Several or One sample as an output format. Select

several: Users: The user name appears on the printed report

(17 characters). Header:The company name can be added as a

header (40 characters) and appears on the print report. Identify

sensor:The sensor model and the sensor serial number can be

added and appears on the print report.

GLP Select Several or One sample as an output format. Select

several: Users: The user name appears on the printed report

(17 characters). Header:The company name can be added as a

header (40 characters) and appears on the print report. Identify

sensor:The sensor model and the sensor serial number can be

added and appears on the print report.

4. When a computer is connected and LabCom Easy (refer to Select

the data output on page 12 for more information) is selected, use the

or to select

Option Description

Users The user name appears on the printed report

(17 characters).

Identify sensor The sensor model and the sensor serial number can be

added and appears on the print report.

Maintenance

W A R N I N G

Multiple hazards. Do not disassemble the instrument for maintenance or service.

If the internal components must be cleaned or repaired, contact the

manufacturer.

C A U T I O N

Personal injury hazard. Only qualified personnel should conduct the tasks

described in this section of the manual.

Clean the instrument

N O T I C E

Never use cleaning agents such as turpentine, acetone or similar products to

clean the instrument including the display and accessories.

Clean the exterior of the instrument with a moist cloth and a mild soap

solution.

Clean the probe

Clean the probe as needed. Refer to Troubleshooting on page 17 for

more information about cleaning. Refer to the probe documentation for

information about the probe maintenance.

Replace the magnetic stirrer

If the magnetic stirrer does not start, follow the numbered steps to

replace the magnetic stirrer.

English 15

1 2

16 English

Troubleshooting

Refer to the following table for common problem messages or

symptoms, possible causes and corrective actions.

Table 1 Calibration warnings and errors

Error/Warning Solution

Calibration out of

range

Measured value out of range.

Calibrate again. Connect a new probe.

Unknown buffer Calibrate again.

Examine the probe: Clean the probe (refer to Clean the

probe on page 15 for more information); make sure that

there are no air bubbles in the membrane. Shake the

probe like a thermometer; connect a different probe to

find if the problem is with the probe or the meter.

Examine the buffer solution: Make sure that the buffer

used matches the buffer specified in configuration; make

sure of the temperature specification in configuration; use

a new buffer solution.

Same buffer /

standard. Re-

calibrate

Unstable

measurement

Time > 100 s (pH,

EC and DO

calibrations)

Time > 240 s (ISE

calibrations)

Calibrate again.

Examine the probe: Clean the probe (refer to Clean the

probe on page 15 for more information); make sure that

there are no air bubbles in the membrane. Shake the

probe like a thermometer; connect a different probe to

find if the problem is with the probe or the meter.

Make sure that the membrane and the diaphragm are

properly immersed in the sample.

Temperature

difference > 3.0 ºC

Adjust the calibration solutions to the same temperature.

Examine the temperature sensor.

Temperature out of

range

Examine the temperature sensor.

Connect a new probe.

Table 1 Calibration warnings and errors (continued)

Error/Warning Solution

Outside allowable

range

Offset or Slope outside the range.

Examine the buffer solution: Make sure that the buffer

used matches the buffer specified in configuration; make

sure of the temperature specification in configuration; use

a new buffer solution.

Examine the probe: Clean the probe (refer to Clean the

probe on page 15 for more information); make sure that

there are no air bubbles in the membrane. Shake the

probe like a thermometer; connect a different probe to

find if the problem is with the probe or the meter.

Signal too low / high

(DO calibrations)

DO probe error.

Examine the probe. Connect a different probe to make

sure that if problem is with probe or meter.

Use a new standard solution.

Cell constant over

limits (EC

calibrations)

Insert the probe into the appropriate standard and re-

read.

Examine the probe: Clean the probe (refer to Clean the

probe on page 15 for more information); make sure that

there are no air bubbles in the membrane. Shake the

probe like a thermometer; connect a different probe to

find if the problem is with the probe or the meter.

Cell constant

deviation error (EC

calibrations)

Not calibrated There are no calibration data stored in the instrument.

Perform calibration.

English 17

Table 2 Measurement warnings and errors

Error/Warning Solution

- - - - - Measured value is out of range.

Examine the probe: Clean the probe (refer to Clean the

probe on page 15 for more information); make sure

that there are no air bubbles in the membrane. Shake

the probe like a thermometer; connect a different probe

to find if the problem is with the probe or the meter.

Unstable measurement

(pH, EC and DO

measurements)

Time > 120 s

Make sure that the membrane and the diaphragm are

properly immersed in the sample.

Examine the temperature.

Examine the probe: Clean the probe (refer to Clean the

probe on page 15 for more information); make sure

that there are no air bubbles in the membrane. Shake

the probe like a thermometer; connect a different probe

to make sure that if problem is with probe or meter.

10.389 mg/L >>>>>

00012 00:13

ISE measurement: The measured value is superior to

the highest standard used in calibration. Measure

again.

0.886 mg/L <<<<<<

00018 00:11

ISE measurement: The measured value is inferior to

the lowest standard used in calibration. Measure

again.

Replacement parts and accessories

Note: Product and Article numbers may vary for some selling regions. Contact the

appropriate distributor or refer to the company website for contact information.

Replacement parts

Description Item no.

sensION+ PH3 Lab pH-meter with accessories, without

probe

LPV2000.97.0002

sensION+ PH31 Lab pH-meter, GLP, with accessories,

without probe

LPV2100.97.0002

sensION+ MM340 Lab pH & Ion-meter, GLP, 2 channels,

with accessories, without probe

LPV2200.97.0002

Replacement parts (continued)

Description Item no.

sensION+ EC7 Lab conductivity meter, with accessories,

without probe

LPV3010.97.0002

sensION+ EC71 Lab conductivity meter, GLP, with

accessories, without probe

LPV3110.97.0002

sensION+ MM374, 2 channel Lab meter, GLP,

accessories, without probes

LPV4110.97.0002

sensION+ MM378, 2 channel Lab meter, GLP,

accessories, without probes

LPV4130.97.0002

Consumables

Description Item no.

pH buffer solution 4.01, 125 mL LZW9460.99

pH buffer solution 7.00, 125 mL LZW9461.97

pH buffer solution 10.01, 125 mL LZW9470.99

pH buffer solution 4.01, 250 mL LZW9463.99

pH buffer solution 7.00, 250 mL LZW9464.97

pH buffer solution 10.01, 250 mL LZW9471.99

pH buffer solution 4.01, 1000 mL LZW9466.99

pH buffer solution 7.00, 1000 mL LZW9467.97

pH buffer solution 10.01, 1000 mL LZW9472.99

Electrolytic solution (KCl 3M), 125 mL LZW9510.99

Electrolytic solution (KCl 3M), 250 mL LZW9500.99

Electrolytic solution (KCl 3M), 50 mL LZW9509.99

Conductivity standard solution 147 µS/cm, 125 mL LZW9701.99

Conductivity standard solution 1413 µS/cm, 125 mL LZW9711.99

18 English

Consumables (continued)

Description Item no.

Conductivity standard 12.88 mS/cm, 125 mL LZW9721.99

Conductivity standard 147 µS/cm, 250 mL LZW9700.99

Conductivity standard 1413 µS/cm, 250 mL LZW9710.99

Conductivity standard 12.88 mS/cm, 250 mL LZW9720.99

Electrolytic solution 0.1 M, 125 mL LZW9901.99

Enzyme solution 2964349

Pepsin Cleaning Solution 2964349

Electrode cleaning solution 2965249

0.1 N HCl solution 1481253

Ethanol, 95% (Grease, oils, fats) 2378900

Accessories

Description Item no.

Thermal printer, USB, for sensION+ benchtop instruments LZW8203.97

Thermal paper for printer LZW8203, bag with 4 rolls LZM078

Power supply for sensION+ benchtop instruments,

230-115 VAC

LZW9008.99

LabCom Easy PC SW, for sensION+ GLP, CD, cable,

USB adapter

LZW8997.99

LabCom PC SW, for sensION+ GLP, CD, cable, USB

adapter

LZW8999.99

Magnetic stirrer with sensor holder, for sensION+

multimeters

LZW9319.99

3x50 mL printed beakers for pH calibration LZW9110.97

3x50 mL printed beaker for conductivity calibration LZW9111.99

Accessories (continued)

Description Item no.

Three-sensor holder, for sensION+ benchtop instruments LZW9321.99

Radiometer probe holder for sensION+ benchtop

instruments

LZW9325.99

Pyrex glass chamber, continuous flow measurements LZW9118.99

PP protector, electrode storage LZW9161.99

Teflon coated stirring bar, 20 x 6 mm LZW9339.99

Standard solutions

Technical buffer solutions (DIN 19267)

Refer to Table 3 pH and ORP (mV) values of specific buffer sets at

varying temperatures.

Table 3 pH, ORP (mV) and temperature values

Temperature pH mV

°C °F

0 32 2.01 4.01 7.12 9.52 10.30 —

10 50 2.01 4.00 7.06 9.38 10.17 245

20 68 2.00 4.00 7.02 9.26 10.06 228

25 77 2.00 4.01 7.00 9.21 10.01 220

30 86 2.00 4.01 6.99 9.16 9.96 212

40 104 2.00 4.03 6.97 9.06 9.88 195

50 122 2.00 4.06 6.97 8.99 9.82 178

60 140 2.00 4.10 6.98 8.93 9.76 160

70 158 2.01 4.16 7.00 8.88 — —

English 19

Table 3 pH, ORP (mV) and temperature values (continued)

Temperature pH mV

°C °F

80 176 2.01 4.22 7.04 8.83 — —

90 194 2.01 4.30 7.09 8.79 — —

Buffer solutions (DIN 19266)

Refer to Table 4 for pH values of specific buffer sets at varying

temperatures.

Table 4 pH and temperature values

Temperature pH

°C °F

5 32 1.668 4.004 6.951 7.087 9.395 10.245 13.207

10 50 1.670 4.000 6.923 7.059 9.332 10.179 13.003

20 68 1.675 4.001 6.881 7.016 9.225 10.062 12.627

25 77 1.679 4.006 6.865 7.000 9.180 10.012 12.454

30 86 1.683 4.012 6.853 6.987 9.139 9.966 12.289

40 104 1.694 4.031 6.838 6.970 9.068 9.889 11.984

50 122 1.707 4.057 6.833 6.964 9.011 9.828 11.705

60 140 1.723 4.085 6.836 6.968 8.962 — 11.449

70 158 1.743 4.126 6.845 6.982 8.921 — —

80 176 1.766 4.164 6.859 7.004 8.885 — —

90 194 1.792 4.205 6.877 7.034 8.850 — —

Conductivity standard solutions

Refer to Table 5 for conductivity values of standard solutions at varying

temperatures.

Table 5 Conductivity and temperature values

Temperature Conductivity (EC)

°C °F µS/cm µS/cm mS/cm mS/cm

15.0 59 119 1147 10.48 92.5

16.0 60.8 122 1173 10.72 94.4

17.0 62.6 125 1199 10.95 96.3

18.0 64.4 127 1225 11.19 98.2

19.0 66.2 130 1251 11.43 100.1

20.0 68 133 1278 11.67 102.1

21.0 69.8 136 1305 11.91 104.0

22.0 71.6 139 1332 12.15 105.4

23.0 73.4 142 1359 12.39 107.9

24.0 75.2 145 1386 12.64 109.8

25.0 77 147 1413 12.88 111.8

26.0 78.8 150 1440 13.13 113.8

27.0 80.6 153 1467 13.37 115.7

28.0 82.4 156 1494 13.62 —

29.0 84.2 159 1522 13.87 —

30.0 86 162 1549 14.12 —

31.0 87.8 165 1581 14.37 —

32.0 89.6 168 1609 14.62 —

33.0 91.4 171 1638 14.88 —

34.0 93.2 174 1667 15.13 —

35.0 95 177 1696 15.39 —

20 English

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