Instruction Manual
HI 93723
Chromium VI High
Range ISM
HI 93723 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 department and then send it with shipment costs
prepaid. When shipping any instrument, make sure it is properly
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., Woonsocket, Rhode Island, 02895 , USA.
Dear Customer,
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
not hesitate to e-mail us at [email protected].
This instrument is in compliance with directives.
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.
The
HI 93723
meter measures the hexavalent chromium
(Cr VI) content in water and wastewater in the 0 to
1000 µg/L (ppb) range.
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 reagent is in powder form and is supplied in packets. The
amount of reagent 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.
SPECIFICATIONS
Range
0 to 1000 µg/L
Resolution
1 µg/L
Accuracy
±5 µg/L ±4% of reading
Typical EMC
±1 µg/L
Deviation
Light Source
Light Emitting Diode @ 555 nm
Method
Adaptation of the ASTM Manual of
Water and Environmental Technology,
D1687-92, diphenylcarbohydrazide
method. The reaction between chromium
VI and the reagent causes a purple tint
in the sample
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.).
REQUIRED REAGENTS
Code
Description
Quantity
HI 93723-0
Chromium VI HR Reagent
1 packet
REAGENT SETS
HI 93723-01
Reagents for 100 tests
HI 93723-03
Reagents for 300 tests
www.hannainst.com
Warranty
Preliminary Examination
General Description
Specifications
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 measurement can be
performed.
A zero reading was not taken. Insert
a sample before adding reagent and
press ZERO.
Under range. A blinking "0" 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 replaced.
Note:
once this indication is
displayed, the meter will lockup.
Change the battery to restart.
Display Code Guide
HANNA instruments®
reserves the right to modify the design,
construction and appearance of its products without advance notice.
IST93723R2
01/07
This Instrument is in
Compliance with the Directives
