Instruction Manual Dear Customer,

Thank you for choosing a Hanna product. This manual will SPECIFICATIONS DISPLAY CODE GUIDE
HI 93727 provide you with the necessary information for the correct
This indicates that the meter is in a
operation of the meter. Please read it carefully before using
Color of Water ISM the meter. If you need additional technical information, do ready state and zeroing can be per-
not hesitate to e-mail us at tech@hannainst.com. formed.
This instrument is in compliance with directives Sampling in Progress. This prompt ap-
EN 50081-1 and EN 50082-1. pears each time the meter is performing
a measurement.
PRELIMINARY EXAMINATION This indicates that the meter is in a
zeroed state and measurement can be
Remove the instrument from the packing material and performed.
examine it carefully to make sure that no damage has A zero reading was not taken. Insert a
occurred during shipment. If there is any damage, notify sample before adding reagent and press
your Dealer. ZERO.
Each Ion Specific Meter is supplied complete with Under range. A blinking "0.00" indicates
• 9V Battery that the sample absorbs less light than
• Three Sample Cuvets and Caps the zero reference. Check the procedure
• One Transport Cap and make sure you use the same cuvet
Note: Conserve all packing material until the instrument SPECIFICATIONS for reference (zero) and measurement.
has been observed to function correctly. Any defective Over range. A flashing value higher than
Range 0 to 500 PCU (Platinum Cobalt Units)
This Instrument is in item must be returned in its original packing. the maximum concentration readable (see
http://www.hannainst.com Compliance with the CE Directives Resolution 10 PCU
Accuracy ±10 PCU ± 5% of reading specifications) indicates that the sample
Typical EMC ±10 PCU absorbs too much light, meaning that
GENERAL DESCRIPTION Deviation the concentration is too high. Dilute the
Light Source Light Emitting Diode @ 470 nm sample.
WARRANTY
The HI 93727 meter measures the true and apparent color Method Adaptation of the Colorimetric Platinum Light over range. The cuvet is not in-
HI 93727 is warranted for two years against defects in workman- in water and wastewater in the 0 to 500 PCU (Platinum Cobalt method serted correctly and an excess ambient
ship and materials when used for its intended purpose and maintained Cobalt Units) range. Light Detector Silicon Photocell light is reaching the detector. If the cover
according to instructions. The meter uses an exclusive positive-locking system to ensure Environment 0 to 50°C (32 to 122°F); is properly installed, then contact your
This warranty is limited to repair or replacement free of charge. that the cuvet is in the same place every time it is placed max 95% RH non-condensing dealer or the nearest Hanna Customer
Damages due to accident, misuse, tampering or lack of prescribed Battery Type/Life 1 x 9 volt/40 hours
maintenance are not covered.
into the measurement cell. Service Center.
Display codes aid the user in routine operations. Auto-Shut off After 10' of non-use Light under range. The zero sample is
If service is required, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number, date of pur- Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8") too dark for proper zeroing. If this is not
The meters have an auto-shut off feature that will turn the Weight 290 g (10 oz.).
chase, serial number and the nature of the failure. If the repair is not the case, contact your dealer or the
covered by the warranty, you will be notified of the charges incurred. If instrument off after 10 minutes of non-use.
the instrument is to be returned to Hanna Instruments, first obtain a REQUIRED ACCESSORIES nearest Hanna Customer Service Center.
Returned Goods Authorization Number from the Customer Service de- 0.45 µm membrane for true color measurement. V The "V" indicates that the battery volt-
partment and then send it with shipment costs prepaid. When shipping age is getting low and the battery needs
any instrument, make sure it is properly packaged for complete protec-
tion.
to be replaced.
To validate your warranty, fill out and return the enclosed warranty card This indicates that the battery is dead
within 14 days from the date of purchase. and must be replaced.
All rights are reserved. Reproduction in whole or in part is prohibited Note: once this indication is displayed,
without the written consent of the copyright owner, Hanna Instru- the meter will lockup. Change the bat-
ments Inc., Woonsocket, Rhode Island, 02895 , USA.
tery to restart.
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
 • Remove the blank, insert the
OPERATIONAL GUIDE apparent color cuvet into the TIPS FOR AN ACCURATE ACCESSORIES
instrument and ensure that MEASUREMENT OTHER ACCESSORIES
MEASUREMENT PROCEDURE ON the notch on the cap is posi-
The instruction listed below should be carefully followed HI 710009 Blue rubber boot
• Turn the meter on by pressing ON/OFF. OFF tioned securely into the
during testing to ensure best accuracy. HI 710010 Orange rubber boot
groove.
• Do not touch the cuvet walls with hands. HI 721310 9V battery (10 pcs)
• When the LCD displays "- - -", it is • Press READ and "SIP" will appear on the display.
ready. • In order to maintain the same conditions during the HI 731318 Tissue for wiping cuvets (4 pcs)
zeroing and the measuring phases, it is necessary to HI 731321 Glass cuvets (4 pcs)
1.5 cm close the cuvet to prevent any contamination. HI 731325 Caps for cuvets (4 pcs)
• Fill one cuvet up to 1.5 cm (¾")
• Do not let the test sample stand too long after reagent HI 93703-50 Cuvets cleaning solution (230 mL).
below the rim with deionized water
is added or accuracy will be lost.
and replace the cap. This is the
blank. • The meter directly displays the value of apparent color. • Whenever the cuvet is placed into the measurement cell,
• Remove the cuvet, insert the it must be completely free of fingerprints, oil or dirt.
• Fill another cuvet up to 1.5 cm (¾")
1.5 cm

true color cuvet into the in- Wipe it thoroughly with HI 731318 or a lint-free cloth
below the rim with unfiltered sample
strument and ensure that prior to insertion.
and replace the cap. This is the
apparent color. the notch on the cap is posi- • It is important that the sample does not contain any
tioned securely into the debris. This would corrupt the readings.
groove. • It is possible to take multiple readings in a row, but it CE DECLARATION
• Filter 50 mL of sample through a • Press READ and "SIP" will appear on the display. is recommended that a zero reading be taken for each OF CONFORMITY
sample and that the same cuvet is used for zeroing and
filter with a 0.45 µm membrane. measurement.
• It is important to discard the sample immediately after
the reading is taken because the glass might become
• Fill the third cuvet up to 1.5 cm 1.5 cm
permanently stained.
(¾") below the rim with the filtered • Shaking the cuvet can generate bubbles in the sample,
• The meter directly displays concentration in color units of
sample and replace the cap. This the causing higher readings. To obtain accurate measure-
true color on the Liquid Crystal Display.
true color. ments, remove such bubbles by swirling or by gently
INTERFERENCES tapping the vial.
• Place the blank into the holder There are no known interferences for this method. • All the reaction times reported in this manual are
and ensure that the notch on referred to 20°C (68°F). As a general rule of thumb,
the cap is positioned securely they should be doubled at 10°C (50°F) and halved at
into the groove. 30°C (86°F).

• Press ZERO and "SIP" will appear on the display. BATTERY REPLACEMENT
ZERO Battery replacement must only take place in a non-hazard-
ous area using a 9V alkaline battery.
Simply slide off the battery cover on the back of the meter. Recommendations for Users
Before using these products, make sure that they are entirely suitable for the environ-
• Wait for a few seconds and the dis- Detach the battery from the terminals and attach a fresh ment in which they are used.
play will show "-0.0-". Now the meter 9V battery while paying attention to the correct polarity. Operation of these instruments in residential area could cause unacceptable interferences
is zeroed and ready for measure- Replace the battery and the cover. to radio and TV equipments, requiring the operator to take all necessary steps to correct
interferences.
ment. Any variation introduced by the user to the supplied equipment may degrade the
instruments' EMC performance.
9V
To avoid damages or burns, do not perform any measurement in microwave ovens.
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PRINTED IN PORTUGAL IST93727R2 01/00