Hach sensION+ MM374 User manual

DOC022.97.90253
sensION™+ MM374
12/2013, Edition 4
User Manual
Manuel d'utilisation
Manual del usuario
Manual do Usuário
用户手册
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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.
>1012Ω); 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
NOTICE
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
DANGER
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.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
NOTICE
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
DANGER
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
NOTICE
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
DANGER
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