Milwaukee MI 405, MI 407 User Manual

USER MANUAL

MI 405

Ammonia Medium

Range Meter

Dear Custom er ,
Thank you for choosing a Martini product.
This manual will provide you with the
nec essar y inf ormat ion for the c orrect use of
the instrument.
Please read it carefully before using the
meter. This instrum ent is in c omplianc e with

directives.

SPECIFICATIONS:

Range 0.00 to 9.99 mg/L (NH3-N)
Resolution 0.01 mg/L
Precision ±0.10 mg/L @ 5.00 mg/L
Light Source Blue LED 466 nm
Light Detector Silicon Photocell and

466 nm narrow band interf erence filter

Method Adaptation of Nessler method
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 sample, up t o the
mark, and replace the
cap.

4• Plac e the cuvet into the

holder and ensure that
the notch on t he c ap 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 4 drops of NH3-1 (10 drops in

case of seawater analysis) and swirl
gently.

9• Add 4 drops of NH3-2 (10 drops in

case of seawater analysis). Replac e
the cap and swirl gently.

10• Imm ediately reinsert

the cuvet into the
holder and ensure
that the notch on the
cap is positioned
securely into the
groove.

11• Press and hold

READ for 3 seconds
and the display will
show the countdown
prior to the
measurement.
Alternatively, wait
for 3 minutes and 30
seconds and just press READ. In
both cases “SIP” will blink during
measurement.

12• The i nstrum ent dir ectly display s the

concentration in mg/L of ammonia
nitrogen (NH3-N).

13• To convert the reading to mg/L of

ammonia (NH3), multiply by a factor
of 1.216.

Interferences

• Organic compounds like:
chloramines, various aliphatic and
aromatic amines, glycine, (positive
error).
To eliminate these interferences
distillation is required.

• Organic compounds like: aldehydes,
alcohols (e.g. ethanol) or acetone
(negative error).
To eliminate these interferences
distillation is required.

• Sulfide (S2-): may cause turbidity.

• Hardness above 1 g/L as Calcium
Carbonate (CaCO3).

GUIDE TO DISPLAY CODES:

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

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

Sampling In Progress.
Flashing “SIP” prompt
appears each time the
met er is perf orming a
measurement.

“-0.0-”, the m eter i s in
a zeroed state and
measurement can be
performed.

The blinking "BAT"
indicates that the
battery voltage is
getting low and the
battery needs to be
replaced.

“-bA-”, the battery is
dead and must be
replaced. Once this
indication is displayed,
the m eter will l ock up.
Change the battery
and restart the meter.

“Conf”, the meter has
lost its configuration. Contact your
dealer or the n earest Marti ni Customer
Service Center.

ERROR MESSAGES

On zero reading

• Blinking “-0.0-” indicates that the
zeroing procedure failed due to a low
signalto-noise ratio.
In this case
press ZERO again.

• “no L”, the
instrument can not
adjust the light
level . Pl eas e check
that the sample
does not contain
any debris.

• “L Lo”, there is
not enough light to
perform a
measurement.
Please check the
preparation of the
zero cuvet.

• “L H i”, t here is too
much light to
perform a
measurement.
Please check the prepar ation of the zero
cuvet.

On sam ple reading

• “-SA-”, t her e i s t oo
much light for the
sample
measurement.
Please check if the
rig ht sampl e cuvet is
inserted.

• “Inv”, the sample
and the zero cuvet
are i nverted .

• “ZErO”, a zero
reading was not

taken. Follow the instruction in the
measurement procedure for zeroing the
meter.

• Under range. A blinking “0.00”
indi cates th at the sample absorbs less
light than the zero
reference.
Check the procedure
and make sure you
use the same cuvet for
reference (zero) and
measurement.

• A flashing value of
the maximum
concentration
indicates an over
range condition.
The concentration of
the sam ple is beyond
the programmed
range: dilute t he samp le and r e-run the
test.

BATTERY REPLACEMENT

Battery replacement must only take
place in a non-hazardous environment.
Simply rotate the battery cover on the
back of the meter.
Detach the
battery from
the terminals
and attach a
fresh 9V
battery while
paying
attention to
the correct
polarity.
Insert the battery and replace the cover.

ACCESSORIES:

MI505-100 Ammonia MR Reagent
(100 tests)

MI0001 Glass cuvets (2 pcs)
MI0002 Caps for cuvets (2 pcs)
MI0003 Stoppers for cuvets ( 2 pcs)
MI0004 Tissue for wipping cuvets

(4 pcs)
MI0005 9V battery (1 p c)

WARRANTY

This instr ument is w arranted against def ects
in materials and man ufact uri ng for a period of
two years from the date of purchase.
If during t his p eriod th e rep air or r eplac emen t
of parts is req uired, w here th e damag e is not
due to neg ligenc e or erroneou s oper ation by
the user, please
return the meter to either distributor or our
office in the or iginal packing and t he repair
will be fre e of charge.
Damages due to accidents, misuse,
tampering or lack of prescrib ed mainten ance
are not covered.