Hanna Instruments HI 991003 User Manual
Instruction Manual
HI 991003
Portable pH/ORP/Temperature
Meter with Sensor Check
http://www.hannainst.com
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. The
probes are warranted for a period of six
months.
This warranty is limited to repair or replacement
free of charge. Damage due to accidents, 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 problem. 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
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.
This Instrument is in Compliance
with the CE Directives
Dear Customer,
Thank you for choosing a Hanna Instruments
Product.
Please read this instruction manual carefully
before using the instrument. This manual will
provide you with all the necessary information for the correct use of the instrument, as
well as a precise idea of its versatility in a
wide range of applications.
This instrument is in compliance with the
directives.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully to make sure
that no damage has occurred during shipment. If noticeable damage is evident, notify
your dealer.
Note: Save all packing material until you
are sure that the instrument functions
correctly. All defective items must be
returned in the original packing together with the supplied accessories.
GENERAL DESCRIPTION
HI 991003 is a portable pH/pH-mV/ORP/tem-
perature meter, with unique Sensor Check
feature, that allows the user to determine
the electrode status at any time.
Main features also include: extended measurement ranges; waterproof and compact
casing; large dual-line LCD; low battery detection; automatic pH calibration at one or
two points with two memorized buffer sets;
selectable temperature unit (°C or °F).
The pH/ORP electrode has a built-in temperature sensor for simultaneous pH (or
mV) and temperature readings, and also
contains a mini amplifier to render measurements impervious to noise and electrical interferences.
Each meter comes together with
• HI 1297D pH/ORP/temperature probe with
DIN connector and 1 m (3.3’) cable
• 3x1.5V AA alkaline batteries
• instruction manual
• plastic carrying case.
LCD DESCRIPTION
1. Automatic Temperature Compensation
indicator
2. Stability indicator
3. Battery percentage
4. pH calibration indicator
5. Low battery indicator
6. Selectable temperature unit
7. Secondary display
8. Primary display
9. Measuring unit for primary display
ACCESSORIES
HI 1297D Combination amplified pH/
ORP/temperature probe with
DIN and 1 m (3.3’) cable
HI 1296D Combination amplified pH/tem-
perature probe with DIN connector and 1 m (3.3’) cable
HI 7004L pH 4.01 buffer solution, 500 mL
HI 7006L pH 6.86 buffer solution, 500 mL
HI 7007L pH 7.01 buffer solution, 500 mL
HI 7009L pH 9.18 buffer solution, 500 mL
HI 7010L pH 10.01 buffer solution, 500 mL
HI 70300L Storage solution, 500 mL
HI 7061L Cleaning solution, 500 mL
HI 77400P Calibration kit (pH 4&7, 20 mL, 5
pcs each)
HI 721312 Hard carrying case
HI 710007 Blue shockproof rubber boot
HI 76405 Electrode holder
SPECIFICATIONS
Range (*) -2.00 to 16.00 pH
±825 mV (pH-mV)
±1999 mV (ORP)
-5.0 to 105.0°C / 23.0 to 221.0°F
Resolution 0.01 pH
1 mV
0.1°C / 0.1°F
Accuracy ±0.02 pH
(@20°C/68°F) ±2 mV
±0.5°C up to 60°C; ±1°C outside
±1°F up to 140°F; ±2°F outside
Typical EMC ±0.02 pH
Deviation ±2 mV
±0.2°C or ±0.4°F
Temperature Automatic for pH readings
Compensation
pH Calibration Automatic, 1 or 2 point
with 2 sets of standardized buffers
(4.01/7.01/10.01 or 4.01/6.86/9.18)
mV Calibration factory calibrated
Probe (included) HI 1297D
amplified pH/ORP/temperature
probe with DIN connector and 1 m (3.3’) cable
Battery Ty pe 3 x 1.5V AA / IEC LR6
Battery Life approx. 1500 hours
Auto-off after 8 minutes of nonuse
Environment 0 to 50°C (32 to 122°F);
RH 100%
Dimensions150 x 80 x 38 mm (5.9 x 3.2 x 1.5”)
Weight 245 g (8.6 oz.)
(*) the temperature range is limited to 80°C (176°F) if
using the HI1296D or HI1297D probes.
To clean the meter, use water only.
Hanna Instruments reserves the right to modify
the design, construction and appearance of its
products without advance notice.
IST991003 06/03
OPERATIONAL GUIDE
To connect the probe
With the meter turned off, connect the HI 1297D
probe to the DIN socket on the top of the meter by
aligning the pins and pushing in the plug. Tighten
the nut to ensure a good connection. Remove the
protective cap from the probe before taking any
measurements.
To turn the meter ON
Press the ON/OFF/MODE button until the display
lights up. At start-up, all the LCD segments are
displayed for 1 second, then the percent indication of the remaining battery life is shown for another second (E.g. % 100 BA TT). The meter then
enters the normal measuring mode.
Note: If the display needs to be checked, keep the
ON button pressed while turning the meter on.
The meter will display all segments as long as
the button is pressed.
To select the measurement range
While in normal measurement mode, press the
SET/HOLD button to select pH, pH-mV or ORP
(mV) measurement range.
Note: “pH-mV” indicates the mV value equivalent
to the pH.
To freeze the display
While in measurement mode, press the SET/
HOLD button until HOLD appears on the secondary display; the reading will be frozen on the LCD
(E.g. pH 5.73 HOLD). Press any button to return to
normal mode.
To turn the meter OFF
While in normal measurement mode, press the
ON/OFF/MODE button. OFF will appear on the
secondary display. Release the button.
Note: the meter is provided with an acoustic sig-
nal feature, which can be disabled using the
switch located in the battery compartment.
Note: When the meter detects the absence of a
temperature probe at its input, the Automatic
Temperature Compensation is turned off, and
the meter uses a default value of 25°C (77°F)
for the temperature measurement and compensation. In this condition, the secondary LCD
shows 25.0°C (77.0°F) blinking. When a probe
is connected, the meter automatically returns
to the ATC mode, the A TC t ag is turned on, and
the temperature is shown on the secondary
display .
pH MEASUREMENT & CALIBRATION
• Make sure the meter has been calibrated before use.
• If the probe is dry, soak it in HI 70300 storage
solution for one hour to reactivate it.
• Set the meter to pH range.
• Place the probe into the sample to be tested.
• Stir briefly and wait until the symbol on the top
left of the LCD is turned off.
• The LCD shows the pH value (automatically
compensated for temperature) and the temperature of the solution.
• If measurements are taken in different samples
successively, rinse the probe tip thoroughly to
eliminate cross-contamination. After cleaning,
rinse the probe tip with some of the sample to
be measured.
pH calibration
• Press and hold the ON/OFF/MODE button until
OFF on the secondary display is replaced by
CAL.
• Release the button. The LCD enters the calibration mode, displaying “pH 7.01 USE” (or “pH
6.86 USE” if the NIST buffer set was selected).
After 1 second the meter activates the automatic
buffer recognition feature. If a valid buffer is detected, then its value is shown on the primary
display, and REC appears on the secondary
display. If no valid buffer is detected, the meter
keeps the USE indication active for 12 seconds,
and then it replaces it with WRNG, indicating
that the sample being measured is not a valid
buffer.
• For a single-point calibration with buffers pH
4.01, 9.18 or 10.01, the meter automatically accepts the calibration when the measurement
is stable; the meter will show on the primary
display the accepted buffer, with the message
“OK 1” on the secondary display, and an audible signal is produced. After 1 second, the
meter automatically returns to the normal mode.
If a single-point calibration with buffers pH 7.01
or 6.86 is desired, then after the calibration point
has been accepted the ON/OFF/MODE button
must be pressed in order to return to the normal measuring mode. After the button is
pressed, the meter shows "7.01" (or "6.86") "OK 1", and an audible signal is produced. After
1 second, the meter automatically returns to
the normal measuring mode.
• For a
Note: When the calibration procedure is com-
To quit calibration and to reset to the default
• After entering the calibration mode and before
• To reset to the default values and clear a previ-
two-point calibration, place the probe in
pH 7.01 (or pH 6.86) buffer . After the calibration
point has been accepted, the “pH 4.01 USE”
message appears. The message is held for
12 seconds, unless a valid buffer is recognized.
If no valid buffer is recognized, then the WRNG
message is shown. If a valid buffer (pH 4.01,
pH 10.01 or pH 9.18) is detected, then the meter
completes the calibration procedure. When the
buffer is accepted, the LCD shows the accepted
value with the “OK 2” message on the secondary display. The meter then returns to the normal measuring mode.
pleted, the CAL tag is turned on.
the first point is accepted, it is possible to quit
the procedure and return to the last calibration
data by pressing the ON/OFF/MODE button. The
secondary LCD displays ESC for 1 second and
the meter returns to normal mode.
ous calibration, press the SET/HOLD button
after entering the calibration mode and before
the first point is accepted.
The secondary LCD displays CLR for 1 second, the meter resets to the default calibration
and the “CAL” tag on the LCD disappears.
SENSOR CHECK
The Sensor Check feature allows the user to
check the electrode status at any time. This is
possible by setting the meter to pH-mV range.
The offset value is the reading of the electrode
immersed in pH7 buffer (@25°C/77°F). If this reading is outside the range ±40 mV, the electrode is
considered "poor" and it is recommended to replace it with a new one.
The slope value of the electrode is the difference
between readings in pH7 and in pH4 buffers. For
a new electrode this is about 174 mV (@25°C/
. With time, the slope value decreases. When
77°F)
it reaches the value of about 150 mV, the electrode is considered "poor", and it is recommended
to replace it with a new one.
Note: Always recalibrate the meter after replacing
the electrode.
Note: To ensure reliable readings, the electrode
must be cleaned with cleaning solution before
measuring the offset and the slope.
ORP MEASUREMENT
• Make sure the probe is connected.
• Set the meter to ORP (mV) range.
• Place the probe into the sample to be tested,
stir briefly and wait until the symbol on the top
left of the LCD is turned off.
• The meter will show the ORP (mV) value and
the temperature of the sample.
Note: The ORP range is factory calibrated.
Note: ATC tag turns off because the mV readings
are not temperature compensated.
METER SETUP
Setup mode allows the selection of the temperature unit and of the pH buffer set.
To enter the Setup mode, press and hold the ON/
OFF/MODE button until CAL on the secondary display is replaced by TEMP and the current temperature unit (E.g. TEMP °C). Then:
• for °C/°F selection, use the SET/HOLD button.
After the temperature unit has been selected,
press ON/OFF/MODE to enter the buffer set selection mode; press ON/OFF/MODE twice to return to the normal measuring mode.
• to change the calibration buffer set, after setting
the temperature unit, the meter will show the
current buffer set: “pH 7.01 BUFF” (for 4.01/7.01/
10.01) or “pH 6.86 BUFF” (for 4.01/6.86/9.18).
Change the set with the SET/HOLD button, then
press ON/OFF/MODE to return to normal mode.
BATTERY REPLACEMENT
The meter displays the remaining battery percentage when turned on. When the level is
below 5%, the
the LCD blinks to indicate a low battery condition. If the battery level is low enough to cause
erroneous readings, the Battery Error Prevention System (BEPS) turns the meter off.
Unscrew the 4 screws located on the back of
the meter and carefully replace the 3 AA batteries located in the battery compartment, while
paying attention to their polarity. Reattach the
back making sure that the gasket is in place
and tighten the 4 screws.
- +
symbol on the bottom left of
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