Milwaukee MI 405 Manual de usuario

USER MANUAL

MI 405

Ammonia Medium

Range Meter

Dear Customer,

Thank you for choosing a Martini 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. This instrument is in compliance 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 interference 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 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.

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•Immediately 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 instrument directly displays 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

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 Martini 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. Please 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 Hi”, there is too

much light to

perform a

measurement.

Please check the preparation of the zero

cuvet.

On sample reading

• “-SA-”, there is too

much light for the

sample

measurement.

Please check if the

right sample cuvet is

inserted.

• “Inv”, the sample

and the zero cuvet

are inverted.

• “ZErO”, a zero

reading was not

taken. Follow the instruction in the

measurement procedure for zeroing the

meter.

• Under 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.

• A 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)

WARRANTY

This instrument is warranted against defects

in materials and manufacturing for a period of

two years from the date of purchase.

If during this period the repair or replacement

of parts is required, where the damage is not

due to negligence or erroneous operation by

the user, please

return the meter to either distributor or our

office in the original packing and the repair

will be free of charge.

Damages due to accidents, misuse,

tampering or lack of prescribed maintenance

are not covered.

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