Milwaukee MI405 User manual

USER MANUAL
MI405
PRO Ammonia Medium
Range Photometer
On Sample Reading
y“-SA-”, there is too much light
for the sample measurement.
Please check if the right sample
cuvet is inserted.
y“Inv”, the sample and the zero
cuvet are inverted.
y“ZErO”, a zero reading was not
taken. Follow the instruction in
the measurement procedure for
zeroing the meter.
yUnder range. A blinking “0.00”
indicates that 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.
yA flashing value of the maximum
concentration indicates an over
range condition. The concentration
of the sample is beyond the
programmed range: dilute the
sample and re-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 pc)
CERTIFICATION
Milwaukee Instruments conform to the CE
European Directives.
Disposal of Electrical & Electronic
Equipment. Do not treat this product
as household waste. Hand it over to the
appropriate collection point for the recycling
of electrical and electronic equipment.
Disposal of waste batteries. This product contains
batteries. Do not dispose of them with other household
waste. Hand them over to the appropriate collection
point for recycling.
Please note: proper product and battery disposal
prevents potential negative consequences for human
health and the environment. For detailed information,
contact your local household waste disposal service
or go to www.milwaukeeinstruments.com (USA &
CAN) or www.milwaukeeinst.com.
RECOMMENDATION
Before using this product, make sure it is entirely
suitable for your specific application and for the
environment in which it is used. Any modification
introduced by the user to the supplied equipment
may compromise the meter’s performance. For your
and the meter’s safety do not use or store the meter in
hazardous environment. To avoid damage or burn, do
not perform any measurement in microwave ovens.
WARRANTY
These instruments are warranted against defects in
materials and manufacturing for a period of 2years
from the date of purchase. This warranty is limited to
repair or free of charge replacement if the instrument
cannot be repaired. Damage due to accidents, misuse,
tampering or lack of prescribed maintenance is not
covered by warranty. If service is required, contact
your local Milwaukee Instruments Technical Service.
If the repair is not covered by the warranty, you will be
notified of the charges incurred. When shipping any
meter, make sure it is properly packaged for complete
protection.
ISTMI405 07/20-1
SATISFACTION
GUARANTEED
MI405 PRO Ammonia
Medium Range Photometer
Distributor in AustraliaPacific Sensor Technologies Pty LtdUnit 4, 3 Neutron Place Rowville, VIC 3178 Australia1300 662 720 | [email protected]www.pacificsensortech.com.au

Dear Customer,
Thank you for choosing a Milwaukee Instruments
product. This manual will provide you with the
necessary information for the correct use of the
instrument. Please read it carefully before using the
meter.
SPECIFICATIONS
Range 0.00 to 9.99 mg/L (NH3 - N)
Resolution 0.01 mg/L
Precision ±0.30 mg/L @5.00 mg/L
Light Source Blue LED 466 nm
Light Detector Silicon Photocell and 466 nm narrow
band interference filter
Method Adaptation of Nessler method
Environment 0 to 50 °C (32 to 122 °F)
100% RH max
Battery Type 9 volt (1 pc)
Auto-Shut o 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 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.

10 ml

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). Replace the cap and swirl gently.
10 mL 
NH3 1NH3 2
x 4 x 4
+
10. Immediately reinsert the cuvet into the holder and
ensure that the notch on the cap is positioned
securely into the groove.
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.
3’30”
11. The instrument directly displays the concentration
in mg/L of ammonia nitrogen (NH3-N).
12. To convert the reading to mg/L of ammonia (NH3),
multiply by a factor of 1.216.
Interferences
yOrganic compounds like: chloramines, various
aliphatic and aromatic amines, glycine, (positive
error). To eliminate these interferences distillation
is required.
yOrganic compounds like: aldehydes, alcohols (e.g.
ethanol) or acetone (negative error). To eliminate
these interferences distillation is required.
ySulfide (S): may cause turbidity.
yHardness 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 meter
is performing a measurement.
“-0.0-”, the meter is 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 meter will lock up.
Change the battery and restart the
meter.
“Conf”, the meter has lost its
configuration. Contact your dealer
or the nearest Milwaukee Customer
Service Center.
ERROR MESSAGES
On Zero Reading
yBlinking “-0.0-” indicates that the
zeroing procedure failed due to a
low signal-to-noise ratio. In this
case press ZERO again.
y“no L”, the instrument can not
adjust the light level. Please
check that the sample does not
contain any debris.
y“L Lo”, there is not enough light to
perform a measurement. Please
check the preparation of the zero
cuvet.
y“L Hi”, there is too much light to
perform a measurement. Please
check the preparation of the zero
cuvet.