Hanna Instruments HI 991002 User manual

www.hannainst.com
Range (*) -2.00 to 16.00 pH
±1999 mV
-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; ±1.0°C outside
±1.0°F up to 140°F; ±2.0°F outside
Temperature Compensation Automatic ,
-5.0 to 105.0°C (23 to 221°F)
pH Calibration Automatic, 1 or 2 point
choose between 2 sets of buffers
(standard: 4.01/7.01/10.01 or NIST: 4.01/6.86/9.18)
ORP Calibration Factory calibrated
Probe (included) HI 1297D
amplified pH/ORP probe with internal
temperature sensor, DIN connector and 1 m (3.3’) cable
Battery Type 3 x 1.5V AAA
Battery Life Approximately 1200 hours of continuous use
Auto-off After 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F);
RH max. 100%
Dimensions 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”)
Weight 205 g (7.2 oz.)
(*) the temperature range is limited to 80°C (176°F) if using
the HI 1296D or HI 1297D sensors.
To clean the meter, use water only.
Instruction Manual
HI 991002
Extended Range Waterproof
pH / ORP / Temperature Meter
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Please read this instruction manual carefully before using the
instrument. If you need additional technical information, do not
hesitate to e-mail us at [email protected].
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.
Allrightsarereserved.Reproductioninwholeorinpartisprohibited
without the written consent of the copyright owner.
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.
HI 991002 is a portable, microprocessor-based pH/ORP/
temperature meter.
Main features include: extended pH, mV and temperature
ranges; waterproof and compact casing; large dual-line
display; low battery detection; automatic pH calibration at one
or two points within two memorized buffer sets (standard or
NIST); selectable temperature unit (°C or °F).
The pH electrode has a built-in temperature sensor for
simultaneous temperature compensated pH and temperature
readings, and also contains an integral pH sensor preamplifier
to provide measurements impervious to noise and electrical
interferences. The mV range is also available.
Each meter is supplied with:
•HI 1297DpH/ORP probe with internal
temperature sensor, DIN connector and 1m (3.3’) cable
•Calibration & cleaning solution sachets
•3 x 1.5V AAA batteries
•Instruction manual.
Hanna Instruments reserves the right to modify the design,
construction and appearance of its products without advance
notice.
HI 1296D Combination preamplified pH/temperature probe
with DIN connector and 1 m (3.3’) cable
HI 1297D Combination amplified pH/ORP/temperature
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 pH electrode Storage solution, 500 mL
HI 7061L pH electrode Cleaning solution, 500 mL
HI 76405 Electrode holder
1. Automatic Temperature Compensation indicator
2. Battery percentage (visible at power up)
3. Secondary display
4. Low battery indicator
5. Stability indicator
6. pH calibration indicator
7. Selectable temperature unit
8. Primary display
9. Measuring unit for primary display
IST991002Z 01/11
SPECIFICATIONS
LCD DESCRIPTION
ACCESSORIES
GENERAL DESCRIPTION
WARRANTY

First time you use the instrument open the battery compartment
and put the batteries inside observing the polarity.
To connect the probe
With the meter turned off, connect the HI 1297D probe to the
DIN socket on the bottom 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 and check the battery status
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 displayed for
another second (E.g. “100 % BATT“). 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 measurement mode, press the SET/HOLD button to
select pH or mV (pH-mV or ORP, depending on probe) measure-
ment range.
To freeze the display
While in measurement mode, press and hold the SET/HOLD
button until “HOLD“ appears on the secondary display and 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.
The meter is provided with an acoustic signal active when a key is
pressed.
Note:When the meter detects the absence of probe at its input,
the message “Probe not connected“ appears on LCD and
“---“blinking on LCD lines. When a probe is connected, the
“Probe not connected“ tag is turned off, and the readings
are displayed on LCD lines.
•Make sure the meter has been calibrated before use.
•If the probe is dry, soak it in HI 70300 storage solution for
30 minutes to reactivate it.
•Submerge the probe in the sample to be tested while stirring it
gently. Wait until the “Not Stable“ tag on the LCD is turned off.
•The pH value automatically compensated for temperature is
displayed on the primary LCD, while the secondary LCD displays
the sample temperature.
•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 deionized water
and some of the sample to be measured.
pH calibration
For better accuracy, frequent calibration of the pH sensor with
the meter is recommended. In addition, the meter must be
recalibrated whenever:
a) The pH electrode is replaced.
b) After testing aggressive chemicals.
c) Where high accuracy is required.
d) At least once a month.
•While in pH measurement mode, press and hold the
ON/OFF/MODE button until “OFF“ on the secondary display
is replaced by “CAL“. Release the button. Place the sensor
into the first calibration buffer.
•The meter enters the calibration mode, displaying “pH 7.01
USE” (or “pH 6.86 USE” if the NIST buffer set was selected).
•For a single-point calibration place the probe in any buffer from
the selected buffer set (E.g. pH 4.01, 9.18 or 10.01). The meter
will automatically recognize the buffer value.
•If the buffer is not recognized or the calibration offset is out of
the accepted range ''---WRONG'' is displayed.
•If the buffer is recognised ''REC" is displayed until the reading is
stable and the calibration is accepted.
•If using pH 7.01 (or pH 6.86 from NIST buffer set), after
acceptance of the buffer press any key to exit. ''OK1'' message is
displayed and meter returns to pH measurment mode.
•If using 4.01 or 10.01 (9.18) buffer the ''OK1'' message is
displayed and meter returns to pH measurment mode.
•For a two-point calibration , proceed as for the single point
calibration selecting 7.01/6.86 pH buffer.
•The ''pH 4.01 USE'' message is displayed.
•Place the probe in the second calibration buffer (pH 4.01 or
10.01, or, if using NIST, pH 4.01 or 9.18). When the second
buffer is accepted, the LCD will display “OK2” for 1 second and
the meter will return to the normal measurement mode.
•If the buffer is not recognised or the slope is out of accepted
range ''---WRONG'' is displayed. Change the buffer, clean the
electrode or press any key to exit calibration.
Note:When the calibration procedure is completed, the “Calibrated“
tag is turned on.
It is always recommended to carry out a two-point calibration
for better accuracy.
To exit calibration and reset default values
•After entering the calibration mode and before the 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 LCD displays “---ESC“ for 1 second and the meter returns to
normal mode.
•To reset the default values and clear a previous calibration,
press the SET/HOLD button after entering the calibration
mode, before the first point is accepted.
The LCD displays “---CLR“ for 1 second, the meter resets to the
default calibration and the “Calibrated” tag on the LCD disap-
pears.
Setup mode allows the selection of the temperature unit and the
type of 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 type of calibration buffer set , after setting the
temperature unit, the meter will show the current buffer set:
“pH 7.01 BUFF” (for standard buffer set: 4.01/7.01/10.01) or
“pH 6.86 BUFF” (for NIST buffer set: 4.01/6.86/9.18). Change
the set with the SET/HOLD button, then press ON/OFF/MODE
to return to normal mode.
ORP MEASUREMENT
pH MEASUREMENT & CALIBRATIONOPERATIONAL GUIDE
METER SETUP
BATTERY REPLACEMENT
The meter is supplied with batteries.
The meter displays the remaining battery percentage when turned
on. When the level is below 5%, the “
- +
“ symbol on 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. It is recommended to replace
the batteries as soon as the display will flash the battery symbol.
To replace the batteries, follow the next steps:
•Open the battery compartment cap (on the bottom of the
instrument).
•Remove old batteries.
•Replace new batteries observing the polarity on the rear of
the instrument.
•Close the battery compartment cap.
•Make sure the probe is connected.
•Set the meter to mV range.
•Place the probe into the sample to be tested.
•Stir briefly and wait until the “Not Stable“ tag on the LCD is
turned off.
•If using the supplied HI 1297D probe, the meter will show the
ORP (mV) value and the temperature of the sample; if using
optional HI 1296D probe, the meter will show the mV value
equivalent to the pH and the temperature of the sample.
Notes:•The ORP range is factory calibrated and cannot be
calibrated by the user. HI 7020L ORP solution can be
used to validate ORP sensor is reading correctly.
•“ATC“ tag turns off because the mV readings are
not temperature compensated.
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/77°F). With time, the slope value decreases. When 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.
To ensure reliable readings, the electrode must be cleaned with
cleaning solution before measuring the offset and the slope.
SENSOR CHECK