3
2
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during shipping.
If there is any damage, notify your Dealer.
Each meter is supplied complete with:
• HI 62920
amplified pH electrode with built-in temperature
sensor, DIN connector and 2 m cable
•
Hanna HI 504910 interface cable (
HI 7920
)
•
pH 4.01 buffer solution, 20 mL sachet
•
pH 7.01 buffer solution, 20 mL sachet
•
Instruction manual
•
1.5V AA size alkaline batteries (4 pcs)
•
12 Vdc power adapter
•
Rugged carrying case.
Note:
Save all packing material until you are sure that the
instrument functions correctly. All defective items must be
returned in their original packaging together with the sup-
plied accessories.
HI 504920
is a complete portable pH/ORP/temperature meter, to be
used mainly with Hanna
HI 504910
Digital Transmitter for two
different applications: it can be a reference pH meter for calibrating
the
HI 504910
Digital Transmitter, or it can be set as user interface
for the
HI 504910
as well.
All pH measurements are automatically compensated for temperature
(ATC). The instrument housing is made of rugged, lightweight material,
making it truly portable.
Five memorized buffers (4.01, 6.86, 7.01, 9.18 and 10.01 pH) and
wrong buffer recognition technology make calibration simple and error
free. One or two-point calibration can be performed.
An user friendly interface provides clear messages regarding errors,
functions and more.
An alarm time-out is available to alert the user if too much time has
elapsed since the last pH calibration and that re-calibration may be
required.
The meter provides a controlled access to calibration and GLP settings
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Please read this instruction manual carefully before using the instru-
ment. This manual will provide you with all the necessary information
for correct use of the instrument.
If you need additional technical information, do not hesitate to e-mail
us at
.
This instrument is in compliance with
directives.
PRELIMINARY EXAMINATION ..................................................................... 3
GENERAL DESCRIPTION ........................................................................... 3
FUNCTIONAL DESCRIPTION ....................................................................... 5
SPECIFICATIONS .................................................................................. 6
INITIAL PREPARATION .............................................................................. 7
CALIBRATION
.................................................................................. 8
pH CALIBRATION PROCEDURE ........................................ 8
mV CALIBRATION PROCEDURE .................................... 10
TEMPERATURE CALIBRATION PROCEDURE .................... 10
USE AS REFERENCE pH METER .............................................................. 11
SETUP MODE
............................................................................... 14
TAKING MEASUREMENTS ...................................................................... 17
GOOD LABORATORY PRACTICE (GLP) ..................................................... 19
BATTERY REPLACEMENT ....................................................................... 21
TEMPERATURE-RESISTANCE CORRELATION
FOR HANNA PH SENSITIVE GLASS .......................................................... 22
ELECTRODE CONDITIONING AND MAINTENANCE ...................................... 23
ACCESSORIES ...................................................................................... 25
CE DECLARATION OF CONFORMITY ........................................................ 27
TABLE OF CONTENTS
WARRANTY
All Hanna Instruments
meters are warranted for two years
against defects in
workmanship and materials when used for their intended purpose and maintained
according to instructions.
Probes are 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 num-
ber 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 Instru-
ments, first obtain a Returned Goods Authorization number from the Customer Service
department and then send it with shipping costs prepaid. When shipping any instru-
ment, make sure it is properly packaged for complete protection.