Milwaukee MW306 MAX User manual

INSTRUCTION MANUAL
SATISFACTION
GUARANTEED
MW306 MAX
EC / TDS / NaCl / Temperature
Portable Meter

All rights are reserved. Reproduction in whole or in part is
prohibited without the written consent of the copyright owner,
Milwaukee Instruments Inc., Rocky Mount, NC27804USA.
THANK YOU for choosing Milwaukee Instruments!
This instruction manual will provide you the necessary
information for correct use of the meter.

3
TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION ..............................................................................4
2. INSTRUMENT OVERVIEW .....................................................................................5
3. SPECIFICATIONS ........................................................................................................6
4. FUNCTIONAL & DISPLAY DESCRIPTION .......................................................8
5. MA815D/1 PROBE DESCRIPTION .......................................................................11
6. GENERAL OPERATIONS .........................................................................................12
6.1. BATTERY MANAGEMENT & REPLACEMENT ....................................12
6.2. CONNECTING THE PROBE........................................................................13
6.3. ELECTRODE CARE & MAINTENANCE .................................................13
7. SETUP ............................................................................................................................. 14
7.1 . SETUP OPTIONS .............................................................................................. 14
8. EC / TDS .......................................................................................................................23
8.1. PREPARATION .................................................................................................23
8.2. CALIBRATION .................................................................................................23
8.3. MEASUREMENT ........................................................................................... 26
8.4. WARNINGS & MESSAGES ...................................................................... 28
9. SALINITY ..................................................................................................................... 30
9.1. PREPARATION ................................................................................................30
9.2. CALIBRATION ................................................................................................30
9.3. MEASUREMENT .............................................................................................31
9.4. WARNINGS & MESSAGES ...................................................................... 33
10. LOGGING ................................................................................................................... 35
10.1. TYPES OF LOGGING .................................................................................. 35
10.2. DATA MANAGEMENT ............................................................................... 38
11. GLP ................................................................................................................................ 45
11.1. EC/TDS INFORMATION ............................................................................. 45
11.2. %NaCl INFORMATION .............................................................................. 45
12. TROUBLESHOOTING ............................................................................................46
13. ACCESSORIES ..........................................................................................................47
CERTIFICATION ............................................................................................................. 48
RECOMMENDATION ................................................................................................... 48
WARRANTY ..................................................................................................................... 49

4 MW Portable Meter
1. PRELIMINARY EXAMINATION
MW306 portable meter is delivered in a rugged carrying case and
is supplied with:
yMA815D/1 4-ring EC / TDS / NaCl / Temperature probe
with DIN connector and 1 meter (3.2 feet) cable
y1.5V alkaline AA battery (3 pcs.)
yMicro USB cable
yInstrument quality certificate
yInstruction manual

INSTRUMENT OVERVIEW 5
2. INSTRUMENT OVERVIEW
MW306 is a portable water-resistant meter that can measure
up to four dierent parameters – EC, TDS, salinity (in PSU, g/L,
percentage NaCl and temperature.
yEasy to read LCD display
yAuto-o feature to prolong battery life
yAll measurements can be temperature compensated
automatically (ATC), or manually (MTC) with a user-selectable
compensation coeicient. Temperature compensation can be
disabled (NOTC) if the actual conductivity value is required.
yThe auto-ranging feature for both EC and TDS measurements
automatically sets the most suitable resolution for the tested
sample.
yAvailable log space for up to 1000 records
yLogged data can be exported using a USB cable
yDedicated GLP key to store and recall data on system status

6 MW Portable Meter
3. SPECIFICATIONS
Range *
EC
0.00 to 29.99 S/cm
30.0 to 299.9 S/cm
300 to 2999 S/cm
3.00 to 29.99 mS/cm
30.0 to 200.0 mS/cm
up to 500.0 mS/cm, absolute conductivity **
TDS (with
0.5 factor)
0.00 to 14.99 ppm (mg/L)
15.0 to 149.9 ppm (mg/L)
150 to 1499 ppm (mg/L)
1.50 to 14.99 g/L
15.0 to 100.0 g/L
up to 250.0 g/L absolute TDS **
up to 400.0 g/L absolute TDS ** (with 0.8 factor)
Salinity
0.0 to 400.0 % NaCl
2.00 to 42.00 PSU
0.00 to 80.00 g/L
Temp. -20.0 to 120.0 °C (-4.0 to 248.0°F)
Resolution
EC
0.01 S/cm
0.1 S/cm
1 S/cm
0.01 mS/cm
0.1 mS/cm
TDS
0.01 ppm
0.1 ppm
1 ppm
0.01 g/L
0.1 g/L
Salinity
0.1% NaCl
0.01 PSU
0.01 g/L
Temp. 0.1 °C (0.1 °F)
Accuracy *
@ 25 °C
(77 °F)
EC ±1% of reading
(±0.05 S/cm or 1 digit, whichever is greater)
TDS ±1% of reading
(±0.03 ppm or 1 digit, whichever is greater)
Salinity ±1% of reading
Temperature
accuracy * ±0.5 °C (±0.9 °F)
* Limits will be reduced to actual sensor limits.
** Absolute conductivity (or TDS) is the conductivity (or TDS) value
without temperature compensation.

SPECIFICATIONS 7
Calibration
EC / TDS
Single cell factor calibration
6 standards:
84 S/cm, 1413 S/cm, 5.00mS/cm,
12.88mS/cm, 80.0 mS/cm, 111.8 mS/cm
One-point oset: 0.00 S/cm
Salinity One-point
with MA9066 Salinity calibration solution
Temp. No temperature calibration
Temperature
compensation
ATC – automatic
MTC – manual, without temperature probe
–20.0 to 120.0 °C (–4.0 to 248.0 °F)
NO TC – without temperature compensation
Conductivity
temp. coeicient
0.00 to 6.00 % / °C (EC & TDS only)
Default value: 1.90 % / °C
TDS factor 0.40 to 0.80
Default value: 0.50
Logging memory
Max. 1000 log records (stored in up to 100 lots)
On demand, 200 logs
On stability, 200 logs
Interval logging, 1000 logs
PC connectivity 1 micro USB port
Battery type 3 x 1.5V alkaline AA (included)
Battery life Approx. 200 hours of use
Environment 0 to 50 °C; maximum RH 95%
Dimensions 200 x 85 x 50 mm (7.9 x 3.3 x 2.0”)
Casing IP67 protection level
Weight 260 g (0.57 lb)
PROBE SPECIFICATIONS
EC probe
MA815D/1
Temperature range 0 to 60 °C (32 to 140 °F)
Temperature sensor NTCK
4-ring type Stainless steel
Connector socket DIN, 7 pins
Body ABS
Dimensions
total length: 198 mm (7.8")
active part: 96 mm (3.8")
Ø 16 mm (0.63")
Cable length 1 m (3.2 ft)

8 MW Portable Meter
4. FUNCTIONAL & DISPLAY DESCRIPTION
Front Panel
10
9
8
7
6
1
2
3
4
5
1. Liquid Crystal Display (LCD)
2. ESC key, to exit current mode
3. RCL key, to recall the logged values
4. LOG/CLEAR key, to log the reading or to clear calibration or
logging
5. SETUP key, to enter setup mode
6. ON/OFF key
7. directional keys (menu navigation, setting parameters)
8. RANGE/ key, to select EC, TDS or Salinity
9. CAL/EDIT key, to enter or edit calibration settings, setup settings
10. GLP/ACCEPT key, to enter GLP or to confirm selected action

FUNCTIONAL & DISPLAY DESCRIPTION 9
Top Panel
2
3
1
1. Micro USB port
2. Micro USB port cap
3. DIN probe connector

10 MW Portable Meter
Display Description
1
2
8
7
3
5
9
10
614
13
12
11
16
15
4
1. Mode tags
2. Battery status
3. Stability indicator
4. USB connection status
5. Arrow tags, to navigate the menu in either direction
6. Probe symbol
7. Log tag
8. Accept tag
9. Third LCD line, message area
10. Measurement units
11. First LCD line, measurement readings
12. Date tag
13. Temperature compensation status (NOTC, MTC, ATC)
14. Temperature units
15. Second LCD line, temperature readings
16. Measurement units / TDS settings

MA815D/1 PROBE DESCRIPTION 11
5. MA815D/1 PROBE DESCRIPTION
Main features:
yDirect signal processing for noise-free measurements
yAccurate and integrated temperature measurement
1
2
3
4
1. O-ring
2. Plastic insulator
3. Steel rings
4. Probe sleeve

12 MW Portable Meter
6. GENERAL OPERATIONS
6.1. BATTERY MANAGEMENT & REPLACEMENT
The meters are supplied with 3 x 1.5V alkaline AA batteries and
equipped with Battery Error Prevention System (BEPS) feature,
which turns the meter o after 10 minutes of non-use (see SETUP
OPTIONS, Auto O section).
At power on, the instruments perform an auto-diagnostic test and
all LCDsegments are displayed for a few seconds.
Use  keys to check the battery percentage.
To replace the batteries
1. Turn the meter o.
2. Remove the 4 screws on the back of the meter to open the
battery compartment.
3. Remove the old batteries.
4. Insert the three new 1.5V AA batteries while paying attention
to their polarity.
5. Close the battery compartment using the 4 screws.

GENERAL OPERATIONS 13
6.2. CONNECTING THE PROBE
MA815D/1 is connected to the meter through a DIN connector,
making attaching and removing the probe an easy process.
yWith the meter o, connect the probe to the DIN socket on the
top of the meter.
yAlign the pins and key then push the plug into the socket.
After measurement, power o the meter and clean the probe before
storage.
6.3. ELECTRODE CARE & MAINTENANCE
When using a new probe, remove the sleeve and inspect the
probe prior to use.
Calibrating
Calibration is the first step in obtaining accurate and repeatable
results. See CALIBRATION section for details.
Best practice
yAlways use fresh standards. The calibration standards are
easily contaminated.
yDo not reuse standards.
yDo not use expired standards.
Regular Maintenance
yInspect the probe for cracks or other damage. Replace the
probe if necessary.
yInspect sensor o-ring for nicks or other damage.
yInspect the cable. Cable and insulation must be intact.
yConnectors should be clean and dry.
yFollow storage recommendation.
Cleaning Procedure
If a more thorough cleaning is required, remove the sleeve
and clean the probe with a cloth and a nonabrasive detergent.
Reinsert the sleeve and recalibrate the probe.
Storage
EC probes should always be stored clean and dry.

14 MW Portable Meter
7. SETUP
To configure the meter settings, modify default values or set
measurement parameters:
yPress SETUP to enter (or exit) Setup mode
yUse  keys to navigate the menus (view parameters)
yPress CAL/EDIT to enter Edit mode (modify parameters)
yPress RANGE/ key to select between options
Use  keys to modify values (value being modified is
displayed blinking)
yPress GLP/ACCEPT to confirm and save changes (ACCEPT tag
is displayed blinking)
yPress ESC (or CAL/EDIT again) to exit Edit mode without
saving (return to menu)
7.1 . SETUP OPTIONS
Log Type
Options: INTERVAL (default), MANUAL or STABILITY
Press RANGE/ to select between options.
Use  keys to set time interval: 5 (default), 10, 30 sec. or 1, 2, 5,
15, 30, 60, 120, 180 min.
Use  keys to select stability type: fast (default), medium or
accurate.

SETUP 15
Calibration Expired Warning
Options: 1 to 7 days (default) oro
Use  keys to select the number of days since last calibration
has elapsed.
Temperature Compensation
Options: ATC (default), MTC or NOTC
With the probe connected, press RANGE/ to select options.
EC Cell Factor
Options: 0.010 (default) to 9.999
With the probe connected, use keys to change the value.
Note: Setting the EC cell-factor value directly will erase any
previous calibrations. Logfiles and GLP will display “MANUAL”
as standard.

16 MW Portable Meter
EC Temperature Coeicient (T.Coef.)
Options: 0.00 to 6.00 (1.90 default)
With the probe connected, use keys to change the value.
EC Temperature Reference (T.Ref.)
Options: 25 °C (default) and 20 °C
With the probe connected, use keys to change the value.
TDS Factor
Options: 0.40 to 0.80 (0.50 default)
With the probe connected, use keys to change the value.
EC Temperature Coeicient / Reference View
Options: T.Coef.(%/°C) or T.Ref.(°C) (default)
With the probe connected, use  keys to change between
Temperature Coeicient and Temperature Reference.

SETUP 17
EC Range
Options: AUTO (default), 29.99 S/cm, 299.9 S/cm, 2999 S/cm,
29.99 mS/cm, 200.0 mS/cm
Note: Absolute conductivity — up to 500.0 mS/cm — is the
conductivity value without temperature compensation.
With the probe connected, use keys to change the value.
When autoranging, the meter automatically chooses the optimum
conductivity range to maintain the highest possible accuracy.
Note: Selected EC range is active during measurements only.
If exceeded, the full-scale value is displayed blinking. Logged
data is displayed in µS/cm in the CSV files.
TDS Range
Options: AUTO (default), 14.99 mg/L, 149.9 mg/L, 1499 mg/L,
14.99g/L, 100.0g/L
Note: Absolute TDS — up to 400.0 g/L (with 0.8 factor) — is the
TDS value without temperature compensation.
With the probe connected, use keys to change the value.
When autoranging, the meter automatically chooses the optimum
TDS range to maintain the highest possible accuracy.

18 MW Portable Meter
Note: Selected TDS range is active during measurements only.
If exceeded, the full-scale value is displayed blinking. Logged
data is displayed in mg/L in the CSV files.
TDS Unit
Options: ppm (mg/L) default and g/L
With the probe connected, press RANGE/ to select options.
Salinity Scale
Options: NaCl% (default), psu and g/L
With the probe connected, press RANGE/ to select options.

SETUP 19
Date
Options: year, month or day
Press RANGE/ to select. Use  keys to modify the values.
Time
Options: hour, minute or second
Press RANGE/ to select. Use  keys to modify the values.
Auto O
Options: 5, 10 (default), 30, 60 minutes or o
Use  keys to select the time.
The meter will power o after set period of time.

20 MW Portable Meter
Sound
Options: enable (default) or disable
Use  keys to select.
When pressed, each key will emit a short acoustic signal.
Temperature Unit
Options: °C (default) or °F
Use  keys to select the unit.
LCD Contrast
Options: 1 to 9 (default)
Use  keys to select LCD contrast values.