w w w . h a n n a i n s t . c o m
WARRANTY
HI 98311
and
HI 98312
are
warranted for one
year
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 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 re-
turned 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.
All rights are reserved. Reproduction in whole or in
part is prohibited without the written consent of the
copyright owner, Hanna Instruments.
Instruction Manual
HI 98311 • HI 98312
Waterproof
EC/TDS/Temperature Testers
Remove the instrument from the packing material and
examine it carefully. If any damage has occurred
during shipment, immediately notify your Dealer or
the nearest Hanna Customer Service Center.
Each meter is supplied with:
•
HI 73311
EC/TDS probe
•
HI 73128
probe removal tool
• batteries (4 x 1.5V) and instructions
Note
: Conserve all packing material until the instru-
ment has been observed to function correctly.
Any defective item must be returned in its
original packing.
PRELIMINARY EXAMINATION
HI 98311
and
HI 98312
are waterproof EC/TDS and
temperature meters. The housing has been completely
sealed against humidity and designed to float.
All EC/TDS readings are automatically temperature
compensated (ATC), and temperature values can be
displayed in °C or °F units.
The EC/TDS conversion factor (CONV) is selectable by
the user, as well as the temperature compensation
coefficient
β
(BETA).
The meters can be calibrated at one point.
Measurements are highly accurate with a unique
stability indicator right on the LCD.
A low battery symbol warns the user when the batter-
ies are to be replaced. In addition the Battery Error
Prevention System (BEPS) avoids erroneous reading
caused by low voltage level by turning the meter off.
The
HI 73311
EC/TDS probe, supplied with the
meter, is interchangeable and can be easily replaced
by the user.
The stainless steel encapsulated temperature sensor
facilitates faster and more accurate temperature mea-
surement and compensation.
GENERAL DESCRIPTION
FUNCTIONAL DESCRIPTION
Recommendations for Users
Before using this product, make sure that it is entirely suit-
able for the environment in which it is used. Operation of
this instrument in residential areas could cause unaccept-
able interferences to radio and TV equipment.
Avoid touching the probes at all times.
Any variation introduced by the user to the supplied equip-
ment may degrade the instrument’s EMC performance. To
avoid electrical shock, do not use this instrument when volt-
ages at the measurement surface exceed 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any measure-
ment in microwave ovens.
IST98311R3 07/05
US DESIGN PATENT
D462,024
1. Battery compartment
2. Liquid Crystal Display (LCD)
3. ON/OFF/MODE button
4.
HI 73311
EC/TDS probe
5. Temperature sensor
6.
SET/HOLD button
1. Automatic temperature compensation indicator
2. Stability indicator
3. Battery life percentage indicator
4. Low battery indicator
5. Secondary display
6. Primary display
7. Measuring units for primary display
SPECIFICATIONS
Range
R e s o l u t i o n
A c c u r a c y
( @ 2 0 ° C / 6 8 ° F )
Typical EMC
Deviation
Temperature
Compensation
E n v i r o n m e n t
TDS Factor
C a l i b r a t i o n
C a l . S o l u t i o n s
HI 98311:
HI 98312:
Probe
(
included
)
Battery Type/Life
A u t o - o f f
D i m e n s i o n s
W e i g h t
0.0 to 60.0°C / 32.0 to 140.0°F
0 to 3999 µS/cm (
HI 98311
)
0.00 to 20.00 mS/cm (
HI 98312
)
0 to 2000 ppm (
HI 98311
)
0.00 to 10.00 ppt (
HI 98312
)
0.1°C / 0.1°F
1 µS/cm ; 1 ppm (
HI 98311
)
0.01 mS/cm ; 0.01 ppt (
HI 98312
)
±0.5°C / ±1°F
±2% f.s. (EC/TDS)
±0.5°C / ±1°F
±2% f.s. (EC/TDS)
Automatic, with
β
=0.0 to 2.4%/ºC
0 to 50°C (32 to 122°F); RH 100%
0.45 to 1.00 (CONV)
Automatic, 1 point
HI7031
(1413 µS/cm)
HI7032
(1382 ppm; CONV=0.5)
HI70442
(1500 ppm; CONV=0.7)
HI7030
(12.88 mS/cm)
HI70038
(6.44 ppt; CONV=0.5
or 9.02 ppt; CONV=0.7)
HI 73311
EC/TDS probe
4 x 1.5V with BEPS/approx. 100 hours
After 8 minutes of non-use
163 x 40 x 26 mm (6.4 x 1.6 x 1.0”)
100 g (3.5 oz.)
Hanna Instruments reserves the right to modify the design, con-
struction 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.
