User Manual

Preliminary Examination
Specifications
Range 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy
(@25 °C/77 °F)
±0.2 pH
Calibration automatic, one or two-point
Electrode HI1271 (included)
Battery Type CR2032 Li-ion
Battery Life approximately 1000 hours of continuous use
Auto-off 8 minutes, 60 minutes or can be disabled
Environment 0 to 50 °C (32 to 122 °F); RH 95% max
Dimensions 50 x 174 x 21 mm (2 x 6.8 x 0.9“)
Weight 50 g (1.8 oz.)
Liquid Crystal
Display
ON/OFF
Button
pH Probe
Maximum
Immersion
Level
Recommended
Immersion
Level 4 cm (1.5”)
Operation
Press the ON/OFF button to turn the
meter on. All tags will be displayed.
The meter will go into measurement
mode: current reading and
calibrated buffers are displayed.
Meter Calibration
From measurement mode, press
and hold the ON/OFF button
until “CAL” is displayed.
When “7.01” blinks on the display,
place the tip of the probe into a
pH 4.01, 7.01, or 10.01 buffer
solution.
For one-point calibration using pH 4.01 or pH 10.01
buffer go to procedure B
For one or two-point calibration using pH 7.01
buffer go to procedure A
A
B
When the reading is stable,
the stability indicator will
disappear.“Sto” will be displayed
when the calibration is saved.
If pH 4.01 or pH 10.01 buffer solution
is used as the first point the value of
the buffer is recognized and displayed
with the blinking stability indicator.
Meter will exit to measurement
mode and the calibration tag will
be displayed.
One-Point Calibration with pH 4.01 or pH 10.01
B
One-Point
Meter will exit to measurement
mode and the calibration
tag will be displayed.
pH 4.01 will then blink
on the display.
Two-Point
Use pH 4.01 or pH 10.01 to
perform a two-point calibration.
The value is automatically
recognized and displayed with
the blinking stability indicator.
When the reading is stable, the
stability indicator will disappear.
“Sto” will be displayed when
the calibration is saved.
Meter will exit to measurement
mode and the calibration
tags will be displayed.
A
One or Two-Point Calibration with pH 7.01
Thank You
Thank you for choosing a Hanna Instruments product. Please read
this instruction manual carefully before using the instrument.
For more information about Hanna Instruments and our products, visit
www.hannainst.com.
For technical support, contact your local Hanna Instruments Office
or email us at [e-mail]
Find your local Hanna Instruments Office on www.hannainst.com
If pH 7.01 buffer solution is used as
the first point the buffer is recognized
with the blinking stability indicator.
When the reading is stable, the
stability indicator will disappear
and pH 7.01 will be calibrated.
If pH 7.01 is the only calibration
point, finish one-point
procedure at right.
If using pH 4.01 or pH 10.01
as a second point, continue
two-point procedure at right.
Remove the meter from the packing material and examine it carefully to
make sure that no damage has occurred during shipment. If noticeable
damage is evident, contact your local Hanna Instruments Office.
Each meter is supplied with:
• pH 4.01 Buffer Solution Liquid Sachet (2 pcs.)
• pH 7.01 Buffer Solution Liquid Sachet (2 pcs.)
• General purpose cleaning solution (2 pcs.)
• Instruction manual
• Quality Certificate
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the original
packaging with the supplied accessories.
Preparation:
The pH electrode is shipped dry. Before using the Checker
®
, remove the protective
cap and condition the electrode by soaking the tip (bottom 4 cm (1.5”)) in
pH 7.01 buffer solution for several hours. Then follow the calibration procedure.
• Do not be alarmed if white crystals appear around the cap. This is
normal with pH electrodes and they dissolve when rinsed with water.
• Connect the electrode to the meter.
• Turn the Checker
®
on by pressing ON/OFF button.
• Remove the protective cap and immerse the tip of the electrode in the
sample to be tested.
• Stir gently and wait for a stable reading.
NEVER IMMERSE THE ELECTRODE OVER THE MAXIMUM IMMERSION LEVEL.
THE CONNECTOR MUST ALWAYS BE CLEAN AND DRY.
• After use, rinse the electrode with water and store it with a few drops of
HI70300 storage solution in the protective cap.
• Replace protective cap after each use.
DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES.
Meter Overview