User Guide

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FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION
& SPECIFICATIONS& SPECIFICATIONS
& SPECIFICATIONS& SPECIFICATIONS
& SPECIFICATIONS
Range 0.0 to 10.0 mg/L (ppm)
Resolution 0.1 mg/L
Accuracy ±0.2 mg/L ±3% of reading
Typical EMC ± 0.1 mg/L
Deviation
Light Source Light Emitting Diode @ 430 nm
Method Adaptation of the Standard Methods for the
Examination of Water and Wastewater (18
th
edition), azide modified Winkler method. The
reaction between dissolved oxygen and the re-
agent causes a yellow tint in the sample.
Light Life Life of the instrument
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type/Life 1 x 9 volt/40 hours
Auto-Shut off After 10' of non-use
Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8")
Weight 290 g (10 oz.)
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OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
INITIAL PREPARATION
HI 93732N is supplied complete with a 9 V
battery. Slide off the battery compartment
cover on the back of the meter and install
the battery while paying attention to its
polarity.
REQUIRED REAGENTS
Code Description Quantity
HI 93732A-0 Reagent A 5 drops
HI 93732B-0 Reagent B 5 drops
HI 93732C-0 Reagent C 10 drops
MEASUREMENT PROCEDURE
Turn the meter on by pressing ON/OFF.
When the LCD displays "- - -", it is ready.
Fill one 60 mL BOD bottle completely with the unreacted
sample.
Replace the cap and ensure that a small part of the sample spills
over. This is to make sure that no air bubbles have been trapped
inside.
Remove the cap and add 5 drops
of HI 93732A and 5 drops of
HI 93732B. Replace the cap again
and ensure that a part of the
sample spills over.
Swirl the solution. The sample becomes orange and a flocculant
agent will appear.
ON
OFF
9V
SLID
E
OFF