Milwaukee MI404 User manual

USER MANUAL
MI404
PRO Free & Total Chlorine
Photometer
milwaukeeinstruments.com (USA & CAN)
milwaukeeinst.com
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
MI504-100 Free & Total Chlorine (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.
ISTMI404 07/20
SATISFACTION
GUARANTEED
MI404 PRO Free & Total
Chlorine Photometer

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 5.00 mg/L Cl2
Resolution 0.01 mg/L (0.00 - 3.50 mg/L)
0.10 mg/L (3.50 mg/L)
Precision ±0.06 mg/L @1.50 mg/L
Light Source Tungsten lamp
Light Detector Silicon Photocell and 525 nm narrow
band interference filter
Method Adaptation of the USEPA method 330.5
and Standard Method 4500-Cl G
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 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.
8. For free chlorine measurement: add 3 drops of DPD1
indicator and 3 drops of DPD 2 buer to an empty
cuvet. Immediately add 10 mL of unreacted sample.
Replace the cap and swirl gently.
10 ml
▶
9. Immediately reinsert the cuvet into the holder
and ensure that the notch on the cap is positioned
securely into the groove.
▶10 mL ▶
DPD 1DPD 2
x 3 x 3
+
10. Press READ and “SIP” will blink during measurement.
11. The instrument directly displays concentration in
mg/L of free chlorine.
12. Then, for total chlorine measurement, remove the
cuvet and add to the reacted sample 3 drops of
DPD3. Replace the cap and swirl gently.
DPD 3
x 3
13. Reinsert the cuvet into the holder and ensure that the
notch on the cap is positioned securely into the groove.
14. Wait for 2 minutes and 30 seconds then press READ
and “SIP” will blink during measurement.
2’30”
15. The instrument directly displays concentration in
mg/L of total chlorine.
Interferences
yBromine (positive error)
yChlorine dioxide (positive error)
yIodine (positive error)
yOxidized Manganese (positive error)
yChromium (positive error)
yOzone (positive error)
yAlkalinity above 250 mg/L CaCO3or acidity above 150
mg/L CaCO3will not reliably develop the full amount of
color or it may rapidly fade. To resolve this, neutralize
the sample with diluted HCl or NaOH.
yIn case of water with hardness greater than 500mg/L
CaCO3, shake the sample for approximately 2’ after
adding the reagent.
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.
“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 cannot
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.