Preliminary Examination
Remove the tester and accessories from the packing material and examine
it carefully. If you require any further information, please contact Hanna
Instruments technical support team at [email protected].
Each
HI981038
is delivered in a cardboard box and is supplied with:
•
HI70004
pH 4.01 buffer solution, 20 mL sachet (2 pcs.)
•
HI70007
pH 7.01 buffer solution, 20 mL sachet (2 pcs.)
•
HI700684
Electrode cleaning and disinfection solution for bread and dough
deposits, 20 mL sachet (2 pcs.)
•
HI9072
Electrode storage solution, 13 mL dropper
• CR2032 3V Lithium-ion battery
• Instrument quality certificate
• Instruction manual
Note:
Save all packing material until you are sure that the tester works
correctly. Any damaged or defective item must be returned in its original
packing material with the supplied accessories.
General Description & Intended Use
The
HI981038
Bread & Dough pH Tester is designed to measure the pH during baking
processes and ensure it meets the food-hygiene and Hazard Analysis Critical Control
Point (HACCP) regulations.
It features a single button operation system and is easy to use. It has a compact and
waterproof casing and automatic pH calibration at one or two points.
All readings are automatically compensated for temperature variations with a built-in
temperature sensor. The conical shaped electrode is ideal to pierce solid and semisolid
samples. The open junction prevents samples from clogging the junction.
Probe Features
Conical Tip
The conical tip allows for direct measurement in whey
and semisolid samples.
Specialized Glass Formulation
Specialized low temperature (LT) pH glass ensures fast stabilization and accurate
results at lower temperatures.
Open Junction Reference
The open junction design consists of a solid gel interface between the dough
sample and internal Ag/AgCl reference. This interface prevents silver from
Dear Customer,
Thank you for choosing a Hanna Instruments product. Please read this
instruction manual carefully before using the tester.
For more information about Hanna Instruments and our products, visit
www.hannainst.com or e-mail us at [email protected].
For technical support, contact your local Hanna Instruments Office or
e-mail us at [email protected].
entering the sample and makes it impermeable to clogging, resulting in a fast
response and stable reading.
Polyvinylidene Fluoride (PVDF) Body
PVDF is a food-grade plastic that is resistant to most chemicals and solvents,
including sodium hypochlorite, it is also resistant to fungal growth. It has high
abrasion resistance, mechanical strength, and resistance to ultraviolet.
Specifications
Range
0.00 to 12.00 pH
Resolution
0.01 pH
Accuracy
±0.05 pH
Calibration
Automatic, one or two-point
Temperature compensation
Automatic, 0 to 50 °C
Electrode
Built-in probe for specific application
Battery type
CR2032 Lithium-ion (included)
Battery life
Approximately 800 hours of continuous use
Auto-off
8 minutes, 60 minutes or disabled
Environment
0 to 50 °C (32 to 122 °F); RH 95% max
Dimensions
50 x 129 x 21 mm (2 x 5.1 x 0.9“)
Weight
42 g (1.48 oz.)
Functional Description & LCD Display
Liquid Crystal Display (LCD)
ON/OFF button
Maximum immersion level
Recommended immersion level
pH probe
Calibration tags
Preparation
• Remove the protective cap. Do not be alarmed if salt deposits are present.
Rinse the probe with water and blot dry.
• If the glass and / or junction are dry, soak the electrode (bottom 4 cm /
1.5 “) in in storage solution for a minimum of 30 minutes. Rinse with water
and blot dry.
• Calibrate the electrode before using. For best results is recommended to
recalibrate periodically.
Storage
• To ensure a quick response, the glass tip and junction should be kept moist.
• Replace the protective cap with a few drops of storage solution when not in
use. Do not store the electrode in distilled or deionized water.
Operation
Press the ON/OFF button to turn the tester
on. The tester displays all LCD segments
for a few seconds. The tester will enter
measurement mode, the current reading
and calibrated buffers will be shown.
Low battery
indicator
Stability
indicator
Measurement
unit
Calibration
tags
Calibration
From measurement mode, press and hold the ON/OFF button until “CAL” is
displayed.
For one or two-point calibration using pH 7.01 buffer solution, follow
procedure A.
For one-point calibration using pH 4.01 buffer solution, follow
procedure B.
Note:
It is recommended to calibrate the electrode with buffers at the
temperature it will be used at.
A
B
A
One or Two-Point Calibration with pH 7.01
When "7.01" is displayed,
place the tip of the electrode
in pH 7.01 buffer.
When the reading is stable, the
stability icon will disappear.
When "4.01" is displayed, follow
the procedure to the right for a
one or two-point calibration.
One
-P
oint
Press the ON/OFF
button to save
the one-point
calibration.
"Sto" will be
displayed when
the calibration is
saved.
The tester
will return to
measurement
mode and the
calibration
tag will be
displayed.
Two
-P
oint
Place the tip of
the electrode in
pH 4.01 buffer.
The buffer is
automatically
recognized, the
stability indicator
will blink.
Wait until the
measurement is
stable and the
stability indicator
disappears. "Sto"
will be displayed
when the calibration
is saved.
The tester
will return to
measurement
mode and the
calibration
tags will be
displayed.
One-Point Calibration with pH 4.01
B
When "7.01" is
displayed, place the
tip of the electrode
in pH 4.01 buffer.
The buffer value
will be recognized
automatically and
"4.01" will be
displayed.
When the
reading is stable,
the stability
indicator will
disappear.“Sto”
will be displayed
when the
calibration is
saved.
The tester
will return to
measurement
mode and the
calibration
tag will be
displayed.
