Hanna Instruments HI 9524 User Manual
Instruction Manual
HI 9524
Portable Waterproof
pH Meter
http://www.hannainst.com
These Instruments are in
Compliance with the CE Directives
Dear Customer,
Thank you for choosing a Hanna Product. Please read this instruction
manual carefully before using the instrument. It will provide you with
the necessary information for a correct use of the instrument, as well
as a precise idea of its versatility.
These instruments are in compliance with the
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
PRELIMINARY EXAMINATION........................................................ 3
GENERAL DESCRIPTION ............................................................... 3
FUNCTIONAL DESCRIPTION .......................................................... 4
SPECIFICATIONS ......................................................................... 5
OPERATIONAL GUIDE .................................................................. 6
pH CALIBRATION......................................................................... 8
pH VALUES AT VARIOUS TEMPERATURES ................................... 11
TROUBLESHOOTING GUIDE ........................................................ 12
ELECTRODE CONDITIONING AND MAINTENANCE .......................... 13
BATTERY REPLACEMENT & AUTO-OFF ......................................... 16
ACCESSORIES ........................................................................... 17
ELECTRODE APPLICATION REFERENCE GUIDE .............................. 20
WARRANTY ............................................................................... 21
CE DECLARATION OF CONFORMITY ............................................. 22
directives.
2
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
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 noticeable damage, notify your Dealer immediately.
Note: Save all packing materials until you are sure that the instru-
ment functions correctly. Any damaged or defective item must
be returned in its original packing materials together with the
supplied accessories.
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
This waterproof Hanna instrument is heavy-duty pH meter designed to
provide laboratory results and accuracy under harsh industrial conditions.
HI 9524 is a pH/°C meter with a built-in microprocessor. A large
dual-level LCD displays the pH and temperature simultaneously. The
display has graphic symbols to make the calibration procedure easy to
follow. The meter has 5 memorized buffer values (4.01, 6.86, 7.01,
9.18 and 10.01), buffer recognition to avoid errors during calibration
and automatic temperature compensation. To insure trouble-free operation, the meter's circuitry comes with built-in protection against
electromagnetic interference.
HI 9524 is supplied with HI 1230B combination double-junction, gel
pH electrode, HI 7669/2W temperature probe, pH 4.01 and 7.01 (20
mL each) buffer solutions, sample vessel, 1.5V AA size batteries (4
each) and a rugged carrying case.
3
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTION
FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION
1) BNC electrode connector
2) Temperature probe socket
3) Liquid Cristal Display
4) ON/OFF key to turn the meter on or off
5) CAL key to enter or exit calibration mode
6) CFM key to confirm calibration
Ï
7)
selecting pH buffer value
8) MEM key to store pH value in memory
9) MR key to recall the stored value from memory
10) User-friendly graphic symbols
11) Primary display
12) Secondary display
°C°C
°C and Ð
°C keys for manual temperature setting, or
°C°C
4
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
Range 0.00 to 14.00 pH; 0.0 to 100.0°C
Resolution 0.01 pH; 0.1°C
Accuracy (@20°C/68°F) ±0.01 pH; ±0.5°C
Typical EMC Deviation ±0.01 pH; ±0.1°C
Calibration Automatic with 5 memorized standard
buffers (4.01, 6.86, 7.01, 9.18, 10.01)
Offset Calibration ±1 pH
Slope Calibration From 70 to 108%
Temperature Automatic or manual from 0 to 100°C
Compensation (32 to 212°F)
Electrode HI 1230B pH electrode (included)
Temperature Probe HI 7669/2W (included)
Input Impedance 1012 Ohm
Battery Type & Life 4x1.5V, AA size (alkaline batteries)
approx. 400 hours of continuous use
auto-shut off after 10 minutes of non-use
Environment 0 to 50°C (32 to 122°F); 100% RH
Dimensions meter: 196x80x60 mm (7.7x3.1x2.4")
kit: 340x230x80 mm (13.8x9x3.1")
Weight meter: 425 g (15 oz.)
kit: 1.3 Kg (3.0 lb.)
5
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
INITIAL PREPARATION
The meter is supplied complete with batteries.
Remove the back cover, unwrap the batteries and
install them while paying attention to polarity.
To prepare the instrument for use connect the pH electrode and the
temperature probe to the BNC and temperature sockets on the top of
the instrument. The temperature probe can be used independently to
take temperature measurements, or it can be used in conjunction with
the pH electrode to utilize the meter's ATC capability. If the probe is
disconnected, temperature can also be set
manually with the UP and DOWN keys. To
switch the instruments on, press and hold the
ON/OFF key for a fraction of a second. The
°C
or
°C
meter has a built-in protection against electromagnetic interference and the delayed response
of the keys assures that the commands are not
mistaken for stray signals.
ON/OFF
pH MEASUREMENTS
To take a pH measurement remove the electrode protective cap and simply submerge the
tip (4cm/1½") of the electrode and the temperature probe (wherever applicable) into the
sample to be tested.
(1½
")
4 cm
Turn the instrument ON and allow for the electrode to adjust to the
solution and stabilize.
In order to take more accurate pH measurements, make sure that the
instrument is calibrated.
It is recommended that the electrode is always kept wet and rinsed
thoroughly with the sample to be measured before use.
The pH reading is directly effected by temperature. In order for the
6
meter to measure the pH accurately, temperature must be taken in
°C
consideration. If the sample temperature is quite different from the
temperature at which the pH electrode was kept, allow a few minutes
for a perfect thermal equilibrium between them.
To use the meter's Automatic Temperature Compensation feature,
submerge the temperature probe into the sample as close to the
electrode as possible and wait for a couple of minutes. If you know the
temperature of the sample to be tested you can manually compensate
for it.
If manual temperature compensation is desired the temperature
probe must be disconnected from the instrument.
The display will show the default temperature
of 25°C or the last recorded temperature reading with the "°C" indicator blinking.
The temperature can now be adjusted with the
UP and DOWN keys.
TEMPERATURE MEASUREMENTS:
Taking a temperature measurement is very easy.
Turn the instrument ON.
Dip the liquid/general purpose temperature probe
HI 7669/2W into the sample. Then allow a
couple of minutes for the reading to stabilize.
°C
7
°C
or
°C
ON/OFF
pp
H CALIBRATIONH CALIBRATION
p
H CALIBRATION
pp
H CALIBRATIONH CALIBRATION
It is recommended to calibrate the instrument frequently, especially if
high accuracy is required.
The instrument should be recalibrated for pH:
a) Whenever the pH electrode or temperature probe is replaced.
b) At least once a month.
c) After testing aggressive chemicals.
d) If greatest accuracy is required.
e) Whenever the batteries have been replaced.
PREPARATION
Pour small quantities of pH 7.01 and pH 4.01 solution into two clean
beakers.
For accurate calibration use two beakers for each buffer solution, the
first one for rinsing the electrode and the second one for calibration.
This way the contamination of the buffers is minimized.
RINSE
HI 7004
HI 7004 HI 7007
CALIBRATION
HI 7007
HI 7007
To obtain accurate readings, use pH 7.01 and pH 4.01 buffers if you
are going to measure acidic samples, or pH 7.01 and pH 10.01 for
alkaline measurements.
PROCEDURE:
In order to calibrate the meter, there is a choice of 5 memorized
buffers: 4.01, 6.86, 7.01, 9.18 and 10.01 pH.
• Make sure that the meter is in the pH mode.
• Remove the protective cap and rinse the electrode with some of
the buffer calibration solution that you are going to use first.
ONE-POINT CALIBRATION:
It is always recommended to perform a two-point calibration for
optimum accuracy. In case of necessity, it is possible to carry out only
a one-point calibration with the instruments. The offset buffers, that is
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