w w w . h a n n a i n s t . c o m
Hanna Instruments reserves the right to modify the design, con-
struction and appearance of its products without advance notice.
WARRANTY
HI 98121
is
warranted for one year
against defects
in workmanship and materials when used for its
intended purpose and maintained according to in-
structions.
The electrode 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.
Instruction Manual
HI 98121
Waterproof pH / ORP &
Temperature Meter
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 73127
pH electrode
•
HI 73128
Electrode removal tool
• 4 x 1.5V batteries
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 98121
is a waterproof pH, ORP and temperature
meter. The housing has been completely sealed against
humidity and designed to float.
All pH readings are automatically temperature com-
pensated (ATC), and temperature values can be
displayed in °C or °F units.
The meter can be calibrated at one or two points for
pH (with auto-buffer recognition and against five
memorized buffer values), while the mV (ORP) range is
factory calibrated.
Measurements are highly accurate with a unique
stability indicator right on the LCD.
This meter is also provided with battery level indication
at start-up, and with a low battery symbol which
warns the user when the batteries need 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 73127
pH electrode, 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
1. Battery compartment
2. Liquid Crystal Display (LCD)
3. ON/OFF/MODE button
4.
HI 73127
pH electrode
5. Temperature sensor (behind)
6. ORP electrode
7. SET/HOLD button
IST98121 05/05
CE DECLARATION OF CONFORMITY
ACCESSORIES
HI 73127
Replaceable pH electrode
HI 73128
Electrode removal tool
HI 70004P
pH 4.01 solution, 20 mL sachet (25 pcs)
HI 70006P
pH 6.86 solution, 20 mL sachet (25 pcs)
HI 70007P
pH 7.01 solution, 20 mL sachet (25 pcs)
HI 70009P
pH 9.18 solution, 20 mL sachet (25 pcs)
HI 70010P
pH 10.01 solution, 20 mL sachet (25 pcs)
HI 7004M
pH 4.01 solution, 230 mL bottle
HI 7006M
pH 6.86 solution, 230 mL bottle
HI 7007M
pH 7.01 solution, 230 mL bottle
HI 7009M
pH 9.18 solution, 230 mL bottle
HI 7010M
pH 10.01 solution, 230 mL bottle
HI 7021M
ORP test solution (240 mV), 230 mL bottle
HI 7022M
ORP test solution (470 mV), 230 mL bottle
HI 7061M
Electrode cleaning solution, 230 mL bottle
HI 70300M
Electrode storage solution, 230 mL bottle
HI 7091M
Pretreatment reducing solution, 230 mL
HI 7092M
Pretreatment oxidizing solution, 230 mL
Recommendations for Users
Before using this product, make sure that it is entirely
suitable for the environment in which it is used.
The glass bulb at the end of the electrode is sensitive
to electrostatic discharges. Avoid touching the glass
bulb and the ORP electrode 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 voltages at the measurement surface exceed 24
VAC or 60 VDC. To avoid damages or burns, do not
perform any measurement in microwave ovens.
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 unit for primary display
US DESIGN PATENT
D462,024
Dear Customer,
Thank you for choosing a Hanna product. This
manual will provide you with the necessary informa-
tion for correct operation. Please read it carefully
before using the meter.
If you need additional technical information, do not
hesitate to e-mail us at
.
This instrument is in compliance with the
d i r e c -
tives.
