Milwaukee MI411 User manual

USER MANUAL
MI411
PRO Free & Total Chlorine
& pH Photometer
milwaukeeinstruments.com (USA & CAN)
milwaukeeinst.com
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.
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 reagent set (100 tests)
MI509-100 pH reagent (100 tests)
MI511-100 Free & Total Chlorine and pH reagent set (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.
Pleasenote:properproductandbatterydisposalpreventspotential
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.
ISTMI411 07/20-1
SATISFACTION
GUARANTEED
MI411 PRO Free & Total Chlorine
& pH 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
Free & Total Chlorine
Range 0.00 to 5.00 mg/L Cl2
Resolution 0.01 mg/L (0.00-3.50 mg/L);
0.10 mg/L (above 3.50 mg/L)
Precision ±0.06 mg/L @ 1.50 mg/L
Method Adaptation of the USEPA method 330.5
and Standard Method 4500-Cl G.
pH
Range 6.5 to 8.0 pH
Resolution 0.1 pH
Precision ±0.1 pH @ 7.2 pH
Method Adaptation of the phenol red method.
Other
Light Source Tungsten lamp
Light Detector Silicon Photocell and 525 nm narrow
band interference filter
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
CHANGE PARAMETER
To change parameter between Free &
Total Chlorine and pH, press and hold for 3
seconds, the ZERO key.
The selected parameter will be displayed as
“Cl” (chlorine) or “PH” on the display.
or
MEASUREMENT PROCEDURE
1. Turn the meter on by pressing ON/OFF. The last selected
parameter is displayed on the Liquid Crystal Display
(“Cl” or “PH”).
2. Choose the parameter that you want to
measure.
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.
▶
For Free Chlorine measurement
7. Add 3 drops of DPD 1 reagent and 3 drops of DPD 2
reagent to an empty cuvet.
8. 8• Immediately add 10 mL of unreacted sample. Replace
the cap and shake gently.
▶10 mL ▶
DPD 1
x 3
DPD 1
x 3
+
9. Immediately reinsert the cuvet into the holder and
ensure that the notch on the cap is positioned securely
on the groove.
10. Press READ and “SIP“ will blink during measurement.
▶
11. The instrument directly displays concentration in mg/L
of free chlorine.
For Total Chlorine measurement
12. Remove the the cuvet and add to the
reacted sample 3 drops of DPD 3 reagent.
Replace the cap and swirl gently.
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 30 seconds then press READ and
“SIP” will blink during measurement.
10 ml
▶
DPD 3
x 3
2’30”
▶
15. The instrument dirrectly displays concentration in mg/L
of total chlorine.
For pH measurement
16. Fill a cuvet with 10 mL of unreacted sample
up to the mark.
1 7. Add 5 drops of pH-0 reagent. Replace the
cap and shake gently.
18. Insert the cuvet into the holder and ensure that the
notch of the cap is positioned securely into the groove.
19. Press READ and “SIP” will blink during measurement.
20. The instrument dirrectly display the pH value.
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.
pH - 0
x 5