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WARRANTY

HI 993301

 and 

HI 993302 

are 

warranted for two years 

against

defects in workmanship and materials when used for their intended purpose
and maintained according to instructions. 

The probe is warranted for a

period of six months

.

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 instru-
ment. 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 ship-
ment costs prepaid. When shipping any instrument, make sure it is properly
packaged for complete protection.

All rights are reserved. Reproduction in whole or in part is prohibited with-
out the written consent of the copyright owner.

Remove the instrument from the packing material and exam-
ine it carefully. If any damage has occurred during shipment,
notify your dealer or the nearest Hanna Service Center.
The meters are supplied with:
• 

HI 7630 

conductivity probe

• calibration solution sachet, 20 mL

:

HI 70031 

(1413 µS/cm) for 

HI 993301

HI 70030 

(12.88 mS/cm) for 

HI 993302

• 12 Vdc power adapter and instructions

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 EXAMINATION

The waterproof EC/TDS indicators 

HI 993301

 and 

HI 993302

have been designed to meet the grower’s need for equipment
suited to the aggressive environments of agricultural and
hydroponics applications.
The instruments feature a large, dual-level, backlit LCD to
give instantaneous readings of both EC/TDS and temperature
even from a distance.
Calibration and temperature compensation are automatic,
while the TDS factor and temperature coefficient are user
adjustable for application specific measurements.
The 

HI 7630

 probe is provided with built-in temperature

sensor, and has been molded with pipe thread (1/2’’ NPT)for
an easy in-line installation.
Choose the indicator according to the proper EC/TDS ranges for
your application:
• 

HI 993301 

measures EC from 0 to 3999 µS/cm and TDS

from 0 to 2000 ppm

• 

HI 993302

 measures EC from 0.00 to 20.00 mS/cm and

TDS from 0.00 to 10.00 ppt

GENERAL DESCRIPTION

FUNCTIONAL DESCRIPTION

SPECIFICATIONS

Recommendations for Users

Before using this product, make sure that it is entirely suitable for the
environment in which it is used.
Operation of this instrument in residential areas could cause unacceptable
interferences to radio and TV equipment.
Any variation introduced by the user to the supplied equipment may degrade
the instrument’s EMC performance.
To avoid electrical shock, do not use this instrument when voltages at the
measurement surface exceed 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any measurement in microwave
ovens.

IST993301R1       07/05

Range

0.0 to 60°C / 32.0 to 140°F

0 to 3999 µS/cm / 0 to 2000 ppm (

HI 993301

)

0.00 to 20.00 mS/cm / 0.00 to 10.00 ppt (

HI 993302

)

Resolution

0.1°C / 0.1°F

1 µS/cm / 1 ppm (

HI 993301

)

0.01 mS/cm / 0.01 ppt (

HI 993302

)

Accuracy (@20ºC/68ºF)

±0.5°C / ±1°F / ±2% FS for EC/TDS

Typical EMC Deviation

±1°C / ±2°F / ±2.5% FS for EC/TDS

Calibration

Automatic, 1 point

Probe

HI 7630

 (fixed)

Temperature Compensation

Automatic, with 

β

 adjustable from 0.0 to 2.4%/ºC

TDS Factor

Adjustable from 0.45 to 1.00 (CONV)

Power Supply

   12 Vdc power adapter (included)

Environment

0 to 50ºC (32 to 122ºF);

RH max 95% non-condensing

Dimensions

160 x 105 x 31 mm (6.2 x 4.1 x 1.2’’)

Weight

190 g (6.7 oz.) - meter only

1. Liquid Crystal Display
2. ON/OFF/MODE button
3. Power supply connector
4. 12 Vdc power adapter
5.

HI 7630

 conductivity probe with built-in temperature

sensor and pipe thread 1/2’’ NPT

6. SET/HOLD button

w w w . h a n n a i n s t . c o m

Instruction Manual

(HI 993301 - HI 993302)

Hanna Instruments reserves the right to modify the design, construction and

appearance of its products without advance notice.

Dear Customer,
Thank you for choosing a Hanna product.
This manual will provide you with the necessary information
for a correct operation. Please read it carefully before using
the meter. If you need additional technical information, do
not hesitate to e-mail us at 

tech@hannainst.com

.

These instruments are in compliance with the

directives.

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