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 Cl
2
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 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.
8. For free chlorine measurement: add 3 drops of DPD 1
indicator and 3 drops of DPD 2 buffer 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 1
DPD 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
y
Bromine (positive error)
y
Chlorine dioxide (positive error)
y
Iodine (positive error)
y
Oxidized Manganese (positive error)
y
Chromium (positive error)
y
Ozone (positive error)
y
Alkalinity above 250 mg/L CaCO
3
or acidity above 150
mg/L CaCO
3
will not reliably develop the full amount of
color or it may rapidly fade. To resolve this, neutralize
the sample with diluted HCl or NaOH.
y
In case of water with hardness greater than 500 mg/L
CaCO
3
, 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
y
Blinking “-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.
