USER MANUAL
MI 415
Turbidity Meter
Dear Customer,
Thank you for choosing a Martini product.
This manual will provide you with the neces-
sary information for the correct use of the
instrument. Please read it carefully before
using the meter.
This instrument is in compliance with
directives
.
Range
0.00 to 50.00 FNU
50 to 1000 FNU
Resolution
0.01 FNU and 1 FNU
Precision
±0.5FNU or ±5% of read-
ing, whichever is greater
Light Source
High emission infrared LED
Light Detector
Silicon Photocell
Method
Detection of scattered light
Environment
0 to 50°C (32 to 122°F);
100% RH max.
Battery Type
1 x 9 volt
Auto-Shut off
After 5' of non-use
Dimensions
192 x 104 x 52 mm
(7.5 x 4.1 x 2”)
Weight
380 g
SPECIFICATIONS:
ISTMI415 07/05
MEASUREMENT PROCEDURE:
1• Turn the meter on by pressing
ON/OFF.
2• When the LCD displays “- - -”, the
meter is ready.
3• Fill a clean, dry cuvet with sample
up to the mark.
4• Replace the cap.
5• Clean the cuvet with a lint-
free cloth to remove any fin-
gerprints, dirt or waterspots.
6• Place the cuvet into the
holder and ensure that the
notch on the cap is posi-
tioned securely into the
groove.
7• Press READ/ and “SIP” will blink during
measurement.
8• The instrument directly displays turbidity in
FNU units.
CALIBRATION PROCEDURE:
1• Turn the meter on by pressing ON/OFF.
When the LCD displays “- - -”, the meter is
ready.
2• Press CAL key and “CAL” will blink on the
display.
3• Press CAL key again. The date of calibra-
tion in MM.DD format appears on the LCD.
4• To toggle between month and day
press DATE/ key.
5• To change the date press READ/
key.
6• To confirm the date values press
CAL key.
A blinking ZERO message will appear on
the LCD. Insert the 0 FNU standard and
press CAL key. “SIP” will blink during mea-
surement.
