Milwaukee MI 404 User Manual

USER MANUAL

MI 404

Free & Total Chlorine

and pH Meter

Dear C ustomer,
Thank you for choosing a Martini product.
This manual will provide you with the
necessary information for the correct use of
the nstrument. Pl ease read it carefull y
before using the meter. This in strument is in

compliance with

directives.

SPECIFICATIONS:

Range 0.00 to 5.00 mg/L Cl2Cl2
Resolution 0.01 mg/L (0.00-3.50 mg/L);

0.10 mg/ L (above 3.50 mg/ L)

Precision ±0.04 mg/L @ 1.50 m g/L
Light S ource Tungsten lamp
Light Detector Silicon Ph ot oc ell an d 52 5

nm narr ow b and interfer e­ nc e filter
Method Adapt ation of the USEPA
method 33 0. 5 and St an d ard
Method 45 00-Cl G.
Environment 0 to 50°C (32 to 122°F);
100% RH max.

Battery Type 1 x 9 volt
Auto-Shut off After 10' of non-use
Dimensions 192 x 104 x 52 mm

(7.5 x 4.1 x 2”)

Weight 380 g

MEASUREMENT PROCEDURE:

1• Turn the meter on by pressing ON/OFF.
2• When the LCD displays
“- - -”, the meter is ready.
3• Fill the cuvet with 10 mL
of unreacted sample, up to
the mark, and replace the
cap.
4• Place the cuvet into the
holder and ensure that the
notch on the cap is
positioned securely into the
groove.
5• Press ZERO and “SIP” will
blink on the display.
6• After a few seconds the display
will show “-0.0-”. The meter is

now zeroed and ready for measurement.

7• Remove the cuvet. Open it.
8• Add the content of one packet of

reagent.

Use
MI526-100 for free chlorine or

MI524-100 for total chlorine

9• Replace the cap and swirl

gently for 20 seconds.
Reinsert the cuvet into the
holder and ensure that the
not ch on the cap is
positioned securely into
the groove.
10• Wait 1 minute f or free chlorine or 2,5

minutes for to t al chlorine a nd press

READ. In bo th cases “SIP” will blink

during measurement.
11• The instrument directly displays

concentration in mg/L of free or
total chlorine.

Interferences:

• Bromine (positive error)

• Chlorine dioxide (positive error)

• Iodine (po sitiv e error)

• Oxidized Manganese (positive error)

• Chromium (positive error)

• Ozone (posi tive er ror)

• Alkalinity above 250 mg/L CaCO3 or acid i ty
above 150 mg/ L CaC O

3 will not reliably

develop th e full am ou nt of color or it may
rapidly fade.
To resolve this, neutralize the sample with
diluted HCl or NaOH.

• In case of water with hardness greater
than 500 mg/L C aCO

3, shake the sample

for approxi m at el y 2’ after adding th e reag ent.

GUIDE TO DISPLAY CODES:

This prompt appears for 1
second each time the
instrument is t urned on.

The dashes “- - -” in d icates
that the meter is in a ready
state and zeroing can be
performed.

Sampling In Progress.
Flashing “SIP” prompt
appears each time
the meter is performing a measurement.

“-0.0-”, the meter is in
a zero ed state and
measurement can beperformed.

The blinking “BAT” indicates
that battery voltage is
getting low and the b att er y
needs to be replaced.

“-bA-”, the batt er y is dead an d
must be replaced. Once
this indication is displayed,
the meter will loc k up.
Change the battery and restart th e m eter .

“Conf”, the meter has lost
its configuration. Contact
your dealer or the nearest
Martini Customer Service Center.

ERROR MESSAGES

On zero reading

• Blinking “-0.0-” indicates
that the zer oin g pr ocedure
failed due to a low signal­to-noise ratio. In this case
press ZERO again.

• “no L”, the instrument
cannot adjus t the light level.
Please check that the sample
does not contain any debris.

• “L Lo”, th er e is n ot en oug h lig ht
to perform a m eas ur em ent.
Please chec k th e prepara­tion of the zerocuvet.

• “L Hi”, there is too much
light to perform a measure­ment. Please check the
preparation of the zero cuvet.

On sample reading

• “-SA-”, there is too much
light for the sample
measurement. Please
check if the right sample
cuvet is inserted.

• “Inv”, the sample and
the zerocuvet are inverted.

• “ZErO”, a zero r ead i ng w as
not taken. Follow the instruc­tion in the measurement
procedure for zeroing the
meter.

• Under range. A blinking “0.00”
indicates that the sample
absorbs less light than the
zero reference. Check the
procedur e an d m ak e sur e you
use the same cuvet for reference
(zero) and m eas ur em ent.

• A flash ing value of the
maximum concentration
indicates an over range
condition. The concent­ration of the sampl e is
beyond the programmed
range: dilute the sample
and re-run the test.

BATTERY REPLACEMENT

Bat tery replacement
mus t o nly t ake p l ace
in a
non-hazardous
environment.
Simply rotate the
battery cover on t he
bac k of
the met e r .
Detach the battery from
the terminals and
attach a fresh 9V
battery while pay ing
attenti on to the correct p olarity.
Insert t he battery and replace the cover.

ACCESSORIES:

Mi526-100 for free chlorine (100 tests)
Mi524-100 for tota l chlorine (100 tests)
MI0001 Glass cuvets (2 pcs)
MI0002 Caps for cuvets (2 pcs)
MI0003 Stoppers for cuvets (2 pcs)
MI0004 Tissue for wipping cuvet s (4 pcs)
MI0005 9V b attery (1 pc)

WARRANTY

This instrument i s warr anted against defec ts in m aterials
and manufacturing for a period of two years from the
date of purchase. If during this period the repair or
replacement of parts is required, where the damage is
not due to negligence or erroneous operation by the
user, please return the m eter to either distributor or our
office in the origi nal pac king and the r epai r wi l l be fr ee of
charge. Damages due to accidents , mi suse, tam pering or
lack of prescribed maintenance are not covered.