Instruction Manual
HI 93721
Iron High Range ISM
http://www.hannainst.com ThisInstrumentisin
Compliancewith the CE Directives
HannaInstrumentsreservestherighttomodifythedesign,construction
andappearanceofitsproductswithoutadvancenotice.
WARRANTYWARRANTY
WARRANTYWARRANTY
WARRANTY
HI93721iswarrantedfor two years against defects in workman-
shipand materialswhenusedforits intendedpurposeandmaintained
accordingtoinstructions.
Thiswarranty islimitedto repairorreplacement freeofcharge.
Damages due to accident, misuse, tampering or lack of prescribed
maintenanceare not covered.
Ifserviceis required,contactthedealerfromwhom youpurchasedthe
instrument.Ifunderwarranty, report the model number, dateofpur-
chase,serialnumberandthe nature of the failure. Iftherepairisnot
coveredby the warranty,youwillbe notified ofthechargesincurred. If
theinstrumentistobereturnedtoHannaInstruments,firstobtaina
ReturnedGoodsAuthorizationNumber from the Customer Service de-
partmentand thensenditwith shipmentcostsprepaid.Whenshipping
anyinstrument, makesureitisproperly packagedforcompleteprotec-
tion.
Tovalidate yourwarranty,filloutandreturntheenclosedwarrantycard
within14 daysfromthedateofpurchase.
Allrightsare reserved. Reproduction inwholeor in part isprohibited
without the written consent of the copyright owner, Hanna Instru-
mentsInc.,Woonsocket, Rhode Island, 02895,USA.
DearCustomer,
Thank you for choosing a Hanna product. This manual will
provide you with the necessary information for the correct
operation of the meter. Please read it carefully before using
the meter. If you need additional technical information, do
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 93721 meter measures the iron content in water
and wastewater in the 0.00 to 5.00 mg/L (ppm) range.
Themeter usesan exclusivepositive-locking systemto ensure
that the cuvet is in the same place every time it is placed
into the measurement cell.
The reagent is in powder form and is supplied in packets.
The amount of reagent is precisely dosed to ensure maxi-
mum repeatability.
Display codes aid the user in routine operations.
The meter has an auto-shut off feature that will turn the
instrument off after 10 minutes of non-use.
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
Range 0.00 to 5.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.04 mg/L ±2% of reading
TypicalEMC ±0.01 mg/L
Deviation
Light Source Light Emitting Diode @ 470 nm
Method Adaptation of the phenantroline EPA rec-
ommended method 315B for natural and
treated waters. The reaction between iron
and reagents causes an orange tint in the
sample
Light Detector SiliconPhotocell
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 93721-0 Powder Reagent 1 packet
REAGENT SETS
HI93721-01 Reagents for 100 tests
HI93721-03 Reagents for 300 tests
This indicates that the meter is in a
ready state and zeroing can be per-
formed.
Sampling in Progress. This prompt ap-
pears each time the meter is performing
a measurement.
This indicates that the meter is in a
zeroed state and measurement 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
themaximumconcentrationreadable(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 in-
serted 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 volt-
age is getting low and the battery needs
to be replaced.
This indicates that the battery is dead
and must be replaced.
Note: once this indication is displayed,
the meter will lockup. Change the bat-
tery to restart.
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
DISPLAY CODE GUIDE
V
