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Instruction Manual

HI 93746

Iron Low Range ISM

HI 93746 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 93746 

meter measures the iron content in water,

wastewater and seawater in the 0 to 400 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 400 µg/L

Resolution

1 µg/L

Accuracy

±10 µg/L ±8% of reading

Typical EMC

±1 µg/L

Deviation
Light Source

Light Emitting Diode @ 555 nm

Method

Adaptation of the TPTZ Method. The reaction

between iron and the reagent causes a

violet 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/test

HI  93746-0

Iron LR Reagent

2 packets
(1 packet for blank)
(1 packet for sample)

REAGENT SETS

HI 93746-01

Reagents for Iron LR (100 packets)

HI 93746-03

Reagents for Iron LR (300 packets)

w w w . h a n n a i n s t . c o m

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.

General Description

Preliminary Examination

Warranty

Specifications

IST93746R3  11/06

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

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