Hanna Instruments HI 93734 User manual

Instruction Manual
HI 93734
Free & Total Chlorine HR
ISM
www.hannacan.com
This Instrument is in
Compliance with the
CE Directives
Hanna Instruments reserves the right to modify the
design, construction and appearance of its products
without advance notice.
WARRANTYWARRANTY
WARRANTYWARRANTY
WARRANTY
HI 93734 is warranted for two years against defects
in workmanship and materials when used for its intended
purpose and maintained according to instructions.
This warranty is limited to repair or replacement free
of charge.
Damages due to accident, misuse, tampering or lack
of prescribed maintenance are not covered.
If service is required, contact the dealer from whom
you purchased the instrument. If under warranty,
report the model number, date of purchase, serial
number and the nature of the failure. If the repair is
not covered by the warranty, you will be notified of
the charges incurred. If the instrument is to be returned
to Hanna Instruments, first obtain a Returned Goods
Authorization Number from the Customer Service de-
partment and then send it with shipment costs prepaid.
When shipping any instrument, make sure it is prop-
erly packaged for complete protection.
To validate your warranty, fill out and return the
enclosed warranty card within 14 days from the date
of purchase.
All rights are reserved. Reproduction in whole or in
part is prohibited without the written consent of the
copyright owner, Hanna Instruments Inc.
Dear Customer,
Thank you for choosing a Hanna product.
This manual will provide you with the nec-
essary information for the correct operation
of the meter. Please read it carefully before
using the meter. If you need additional
technical information, do not hesitate to
e-mail us at [email protected].
This instrument is in compliance with
directives EN 50081-1 and EN 50082-1.
Remove the instrument from the packing
material and examine it carefully to make
sure that no damage has occurred during
shipment. If there is any damage, notify
your Dealer.
Each Ion Specific Meter is supplied
complete with
• 9V Battery
• Two Sample Cuvets and Caps
• One Transport Cap
Note: Conserve all packing material until
the instrument has been observed to
function correctly. Any defective item
must be returned in its original
packing.
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
The HI 93734 meter measures the Free
and Total Chlorine (Cl2) content in water
and wastewater.
The meter uses an exclusive positive-
locking system to ensure that the cuvet is
in the same place every time it is placed
into the measurement cell.
The reagents are in liquid form and are
supplied in bottles. The amount of re-
agent is precisely dosed to ensure
maximum repeatability.
Display codes aid the user in routine
operations.
The meters have an auto-shut off feature
that will turn the instrument off after 10
minutes of non-use.
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
Range Free Cl20.00 to 9.99 mg/L
Total Cl20.00 to 9.99 mg/L
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading
Typical EMC ±0.01 mg/L
Deviation
Light Source Light Emitting Diode @ 555 nm
Method Adaptation of the EPA recommended
DPD method 330.5. The reaction be-
tween the chlorine and the DPD reagent
causes a pink tint in the sample
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type/Life1 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.).
REQUIRED REAGENTS
Code Description Quantity
HI 93734A-0 Free & Total Chlorine DPD 3 drops
Reagent
HI 93734B-0 Free & Total Chlorine 5 mL
Reagent
HI 93734C-0 Total Chlorine only 1 drop
REAGENT SETS
HI 93734-01 Reagents for 100 Free & Total Chlorine
tests
HI 93734-03 Reagents for 300 Free & Total Chlorine
tests
This indicates that the meter
is in a ready state and
zeroing can be performed.
Sampling in Progress. This
prompt appears each time
the meter is performing a
measurement.
This indicates that the meter
is in a zeroed state and mea-
surement can be performed.
A zero reading was not taken.
Insert a sample before
adding reagent and press
ZERO.
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.
Over range. A flashing value
higher than the maximum
concentration readable (see
specifications) indicates that
the sample absorbs too
much light, meaning that the
concentration is too high.
Dilute the sample.
Light over range. The cuvet
is not inserted correctly and
an excess ambient light is
reaching the detector. If the
cover is properly installed,
then contact your dealer or
the nearest Hanna Customer
Service Center.
Light under range. The zero
sample is too dark for proper
zeroing. If this is not the
case, contact your dealer or
the nearest Hanna Customer
Service Center.
The "V" indicates that the
battery voltage is getting low
and the battery needs to be
replaced.
This indicates that the battery
is dead and must be re-
placed.
Note: once this indication is
displayed, the meter will
lockup. Change the battery
to restart.
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
DISPLAY CODE GUIDE
V

OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
MEASUREMENT PROCE-
DURE
• Turn the meter on by press-
ing ON/OFF.
• When the LCD displays
"- - -", it is ready.
• Select Free or Total Chlorine by press-
ing FREE/
TOTAL. An "I"
or a "C" will
appear on the
right corner to
indicate Free
or total chlorine, respectively.
• Fill the cuvet with 10 mL of unreacted
sample, up to the
mark, and replace
the cap.
• Place the cuvet into
the holder and
ensure that the notch
on the cap is posi-
tioned securely into
the groove.
• Press ZERO and "SIP" will appear on
the display.
• Wait for a few seconds and the display
will show "-0.0-". Now the
meter is zeroed and ready
for measurement.
• Remove the cuvet.
• To measure Free Chlorine, add to the
other cuvet 3 drops of HI 93734A-0 and
5 mL of HI 93734B-0, using the 5 mL
syringe. To measure Total Chlorine,
ON
OFF
FREE
TOTA
L
ZERO
add also 1 drop of
HI 93734C-0.
Shake for 10
seconds.
Note: To measure exactly 5 mL of
reagent with the syringe,
push the plunger completely
into the syringe and insert
the tip into HI 93734B-0 re-
agent bottle. Pull the plunger
out until the lower edge of
the seal is on the 5 mL mark
of the syringe.
• Add 5 mL of unreacted
sample, up to the 10
mL mark of the cuvet,
by means of the
plastic pipette. Re-
place the cap and
shake gently again.
• Reinsert the
cuvet into the
instrument.
• Wait for ap-
proximately 30 seconds and then press
READ. The display will show "SIP"
during measurement.
• The instrument directly displays con-
centration in mg/L of Free or Total
chlorine on the Liquid Crystal Display.
Notes: Free and total chlorine have to be
The instruction listed below should be
carefully followed during testing to ensure
best accuracy.
• Do not touch the cuvet walls with hands.
• In order to maintain the same condi-
tions during the zeroing and the
measuring phases, it is necessary to
close the cuvet to prevent any contami-
nation.
• Do not let the test sample stand too
long after reagent is added or accuracy
will be lost.
• Whenever the cuvet is placed into the
measurement cell, it must be com-
pletely free of fingerprints, oil or dirt.
Wipe it thoroughly with HI 731318 or a
lint-free cloth prior to insertion.
• It is important that the sample does
not contain any debris. This would
corrupt the readings.
• It is possible to take multiple readings
TIPS FOR AN ACCURATETIPS FOR AN ACCURATE
TIPS FOR AN ACCURATETIPS FOR AN ACCURATE
TIPS FOR AN ACCURATE
MEASUREMENTMEASUREMENT
MEASUREMENTMEASUREMENT
MEASUREMENT
measured separately with fresh
unreacted samples following the
above procedure if both values are
requested.
Rinse the plastic pipette 2 or 3 times
with sample before adding it to the
cuvet.
INTERFERENCES
Interference may be caused by:
Bromine
Iodine
Fluorine
Ozone
Oxidized manganese and Chromium
Alkalinity above 250 mg/L or acidity above
150 mg/L 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.
In case of water with hardness greater
than 500 mg/L CaCO3, shake the sample
for approximately 1 minute after adding
the reagents.
ACCESSORIES
• 5 mL syringe
• 1 plastic pipette
Recommendations for Users
Before using these products, make sure that they are entirely suitable
for the environment in which
they are used. Operation of
these instruments in resi-
dential area could cause
unacceptable interferences
to radio and TV equipments,
requiring the operator to take
all necessary steps to correct
interferences. Any variation
introduced by the user to the
supplied equipment may de-
grade the instruments' EMC
performance.
To avoid damages or burns,
do not perform any measure-
ment in microwave ovens.
ACCESSORIESACCESSORIES
ACCESSORIESACCESSORIES
ACCESSORIES
REAGENT SETS
HI 93734-01 Reagents for 100 Free &
Total Chlorine tests
HI 93734-03 Reagents for 300 Free &
Total Chlorine tests
OTHER ACCESSORIES
HI 710009 Blue rubber boot
HI 710010 Orange rubber boot
HI 721310 9V battery (10 pcs)
HI 731318 Tissue for wiping cuvets (4
pcs)
HI 731321 Glass cuvets (4 pcs)
HI 731325 Caps for cuvets (4 pcs)
HI 93703-50 Cuvets cleaning solution
(230 mL).
CE DECLARATIONCE DECLARATION
CE DECLARATIONCE DECLARATION
CE DECLARATION
OF CONFORMITYOF CONFORMITY
OF CONFORMITYOF CONFORMITY
OF CONFORMITY
IST93734R1 12/99
PRINTED IN PORTUGAL
in a row, but it is recommended that a
zero reading be taken for each sample
and that the same cuvet is used for
zeroing and measurement.
• It is important to discard the sample
immediately after the reading is taken
because the glass might become per-
manently stained.
• Shaking the cuvet can generate
bubbles in the sample, causing higher
readings. To obtain accurate measure-
ments, remove such bubbles by
swirling or by gently tapping the vial.
• All the reaction times reported in this
manual are referred to 20°C (68°F). As
a general rule of thumb, they should be
doubled at 10°C (50°F) and halved at
30°C (86°F).
probable level of liquid
taken up by syringe
x 3
5 mL
10 mL
5 mL
of sample
10 mL