Hanna Instruments HI 99131 User manual

www.hannainst.com
Range (*) -2.00 to 16.00 pH
-5.0 to 105.0°C / 23.0 to 221.0°F
Resolution 0.01 pH
0.1°C / 0.1°F
Accuracy ±0.02 pH
(@20°C/68°F) ±0.5°C up to 60°C; ±1.0°C outside
±1.0°F up to 140°F; ±2.0°F outside
Typical EMC ±0.02 pH
Deviation ±0.2°C or ±0.4°F
Temperature Compensation Automatic,
-5.0 to 105.0°C / 23.0 to 221.0°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)
Probe (included) HI 62911D
pre-amplified pH probe with built-in temperature
sensor and titanium cage working as matching pin
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 62911D sensor.
To clean the meter, use water only.
Instruction Manual
HI 99131
Portable Waterproof
pH Meter for Plating Baths
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.
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 99131 is a portable, microprocessor-based pH and
temperature meter with a special probe.
The HI 62911D pH electrode has been specially designed and
fully shielded for applications in plating baths. The titanium
electrode body acts like a Faraday cage, and allows stable
readings even in samples where strong electrical fields are
involved. Moreover, a built-in temperature sensor allows
simultaneous temperature compensated pH and temperature
readings and an integral preamplifier provides measurements
impervious to noise and electrical interferences.
Each meter is supplied with:
•HI 62911D pH/temperature probe
•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 62911D Preamplified pH electrode with built-in temperature
sensor, DIN connector & titanium cage working as
matching pin
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
IST99131Z 12/10
WARRANTY
PRELIMINARY EXAMINATION
GENERAL DESCRIPTION
LCD DESCRIPTION
ACCESSORIES
SPECIFICATIONS

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 62911D 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 freeze the display
While in measurement mode, press the SET/HOLD button, “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 a temperature probe
at its input, the message “Probe not connected“ appears on
LCD and the Automatic Temperature Compensation is turned
off along with the “ATC“ tag. In this condition, the secondary
LCD displays “25.0°C “ (“77°F“) blinking. When the probe
is reconnected, the “Probe not connected“ tag is turned off,
the temperature is displayed on the secondary display and
the “ATC“ tag is turned on.
•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.
•Place the tip of the probe into the sample to be tested.
•Stir briefly and wait until the “Not Stable“ tag on the LCD is
turned off.
•The LCD displays the pH value (automatically compensated for
temperature) on the primary LCD, while the secondary LCD
displays 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 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.
•From normal 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).
After 1 second the meter activates the automatic buffer recognition
feature. If a valid buffer is detected, “REC“ is displayed until the
reading is stable and the calibration is accepted. If no valid
buffer is detected, the meter keeps the “USE“ indication active
for 12 seconds, and then replaces it with “---WRONG“, indicat-
ing 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 reading is stable. The “OK 1” message is displayed and the
meter returns to measurement mode.
If a single-point calibration with buffers pH 7.01 or 6.86 is
desired, after recognition of the buffer press any key to return
to the mesurement mode.
Note:It is always recommended to carry out a two-point calibration
for better accuracy.
•For a two-point calibration , place the probe in pH 7.01 (or pH
6.86) buffer first. After the calibration point has been accepted,
the “pH 4.01 USE” message appears. Place the sensor into the
second calibration buffer. The message is held for 12 seconds,
unless a valid buffer is recognized. If no valid buffer is
recognized, then the “---WORNG“ message is displayed. 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 second buffer is accepted, the LCD will displays “OK 2”
message for 1 second and the meter will return to the normal
measurement mode.
Note:When the calibration procedure is completed, the “Calibrated“
tag is turned on.
To exit calibration and reset default values
•After entering the calibration mode and before 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.
•To reset the default values and clear a previous 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 “Calibrated” tag on
the LCD disappears.
OPERATIONAL GUIDE pH MEASUREMENT & CALIBRATION
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.
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.
METER SETUP
BATTERY REPLACEMENT