Hanna Instruments HI 93734 User Manual

Hanna Instruments Measuring instruments

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Instruction Manual

HI 93734

Free & Total Chlorine HR

ISM

This Instrument is in

Compliance with CE Directives

Hanna Instruments reserves the right to modify the design, con-

struction and appearance of its products without advance notice.

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 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 exam-
ine 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:

Keep all packing material until the instrument has
been observed to function correctly. Any defective item
must be returned in its original packing.

The HI 93734 meter measures the Free and Total Chlorine
(Cl

2

) content in water and wastewater.

The meter uses an exclusive positive-locking system to en-
sure that the cuvet is in the same position every time it is
placed into the measurement cell.
The reagents are in powder and liquid form and are supplied
in bottles and powder 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

Free Cl

2

0.00 to 9.99 mg/L

Total Cl

2

0.00 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 between
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/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 93701-0

Free Chlorine Reagent

1 packet

HI 93734B-0 Free & Total Chlorine

5 mL

Reagent B

HI 93734C-0 Total Chlorine Reagent C

3 drops

(for Total Chlorine only)

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 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
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.

V

Preliminary Examination

Display Code Guide

Specifications

General Description

Warranty

w w w . h a n n a i n s t . c o m

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