Hanna Instruments Foodcare HI981035 User manual

HI981035
Sushi pH Tester
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of
the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
Recommendations for Users
Before using this product, make sure it is entirely suitable for your specific application and for the
environment in which it is used. Any variation introduced by the user to the supplied equipment may
degrade the meters’ performance. For yours and the meter’s safety do not use or store the meter in
hazardous environments.
Warranty
The meter is warranted for a period of one year against defects in workmanship and materials when
used for their intended purpose and maintained according to instructions. This warranty is limited to
repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed
maintenance is not covered. If service is required, contact your local Hanna Instruments Office. 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 (RGA) number from the
Technical Service department and then send it with shipping costs prepaid. When shipping any instrument,
make sure it is properly packaged for complete protection.
INSTRUCTION MANUAL
To change the CR2032 Li-ion battery, turn the battery cover located on the back of the meter
counterclockwise to unlock. Remove cover and replace the battery with + side facing up.
Note: Batteries should only be replaced in a safe area using the battery
type specified in this instruction manual. Old batteries should be disposed in
accordance with local regulations.
Battery Replacement
IST981035 05/18-1
Care and Maintenance
To obtain the highest accuracy for measurements it is important to follow these tips:
• Calibration is only as good as the buffer being used. The pH buffer values change over
time once the sachets are opened. Fresh buffer should be used for each calibration.
• Rinse the probe in purified water after use in pH buffers and between measurements
of samples.
• When the meter is not in use it is important to add several drops of storage solution
to the protective cap to keep the probe hydrated. If storage solution is not available,
pH 4.01 or pH 7.01 buffer can be used.
• For improved accuracy it is recommended to calibrate in two buffers.
• It is important to calibrate and measure samples at the same temperature. A dramatic
change in temperature between buffer solutions and samples to be tested will give
inaccurate readings.
• If fouled, clean the electrode by soaking in cleaning solution for 20 minutes, then
rinse the tip and soak in storage solution at least 30 minutes before use. Recalibrate
after each cleaning.
The meter features a low battery indicator. When
the battery is running low, the tag will blink on
screen. When the battery has been depleted,
“Erb” will appear on screen and the meter will
turn off.
Place meter in calibration mode. Press and hold
ON/OFF until “CLr” is displayed. The meter will
now be at default calibration. No tags will be
shown in measurement mode until calibration is
performed.
Clear Calibration
“Err” Message
Battery Indicator
From measurement mode, press and hold the
ON/OFF button. The meter will cycle through
“OFF,” “CAL,” then current auto-off setting.
The default setting is 8 minutes (“d08”). Press
ON/OFF button to change. “d60” is auto-off after
60 minutes, and “d--” disables the auto-off
feature. Press and hold the button to exit the
menu.
Auto-off
Electrode Storage Solution
Code Description
HI70300L Electrode storage solution, 500 mL bottle
HI70300M Electrode storage solution, 230 mL bottle
HI9072 Electrode storage solution, 13 mL dropper
Electrode Cleaning Solution
Code Description
HI700601P General purpose cleaning solution, 20 mL sachets (25 pcs.)
HI700641P Cleaning and disinfection solution for dairy products,
20 mL sachets (25 pcs.)
pH Buffer Solution
Code Description
HI70004P pH 4.01 buffer solution, 20 mL sachets (25 pcs.)
HI70007P pH 7.01 buffer solution, 20 mL sachets (25 pcs.)
HI77400P pH 4.01 & 7.01 buffer solution, 20 mL sachets (10 pcs., 5 ea.)
Accessories
In calibration mode, if the meter displays an
“Err” message when in the correct fresh buffer
solution then the probe should be cleaned.
Place the probe in the HI700641 cleaning
solution for 20 minutes. Rinse with purified water
and place in storage solution for a minimum of
30 minutes before calibrating.
Certification
All Hanna Instruments conform to the CE European Directives.
Disposal of Electrical & Electronic Equipment. The product should not be treated as household
waste. Instead hand it over to the appropriate collection point for the recycling of electrical and electronic
equipment which will conserve natural resources.
Disposal of waste batteries. This product contains batteries, do not dispose of them
with other household waste. Hand them over to the appropriate collection point for recycling.
Ensuring proper product and battery disposal prevents potential negative consequences for the
environment and human health. For more information, contact your city, your local household waste
disposal service, the place of purchase or go to www.hannainst.com.
RoHS
compliant

Flat Glass Tip
A flat tip optimizes surface contact for measurement on flat
sushi, and samples that cannot penetrated.
Open Junction Reference
The open junction design uses a solid gel interface between
the sample and internal reference cell. This interface prevents
silver from exiting the junction, but also makes it impermeable to clogging, resulting in
a fast response and stable reading. Due to this design, the meter can be used for smaller
sample sizes as there is no junction to submerge.
Open Junction
pH Sensitive Glass
If pH 4.01 buffer
solution is used
as the first point
the value of the
buffer is recognized
and displayed
with the blinking
stability indicator.
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 as a second point,
continue two-point procedure at right.
For one-point calibration using pH 4.01 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.
Meter will
exit to
measurement
mode and the
calibration
tag will be
displayed.
Meter will exit
to measurement
mode and the
calibration
tag will be
displayed.
Two-Point
Use pH 4.01 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.
Thank You
Thank you for choosing a Hanna Instruments product. Please read this instruction
manual carefully before using this instrument.
For technical support, contact your local Hanna Instruments Office or
email us at te[email protected].
To find your local Hanna Instruments Office or for additional information on
Hanna Instruments products, visit www.hannainst.com 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 7.01 or
4.01 buffer solution.
One-Point
One-Point Calibration with pH 4.01
B
AOne or Two-Point Calibration with pH 7.01
pH 4.01 will then
blink on the display.
Ignore it and press
ON/OFF button.
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.
Specifications
Range 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy ±0.2 pH @25 °C/77 °F
Calibration Automatic, one or two-point
Electrode Built-in probe for specific application
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 51 x 160 x 21 mm (2 x 6.3 x 0.9“)
Weight 52 g (1.8 oz.)
Preliminary Examination
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.)
• Cleaning and disinfection solution for dairy products (2 pcs.)
• Electrode storage solution, 13 mL dropper
• 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.
Meter Overview
Preparation:
The pH electrode is shipped with a protective cap containing storage solution. Before
using the meter, remove the protective cap and condition the electrode by soaking the
tip (bottom 1 cm (0.4”)) in pH 7.01 buffer solution for several minutes. 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.
• Turn the meter on by pressing ON/OFF button.
• Remove the protective cap and place the flat tip of the electrode fully on the sample
to be tested.
NEVER IMMERSE THE ELECTRODE OVER THE MAXIMUM IMMERSION LEVEL.
• For best results, recalibrate periodically.
• After use, rinse the electrode with water and store it with a few drops of storage
solution in the protective cap.
• Reattach the protective cap after each use.
DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES.
Liquid Crystal
Display
ON/OFF
Button
Maximum
Immersion
Level
Recommended full
touch surface
pH Probe
Intended use
Sushi rice needs to be kept warm (about 32 °C) for best results when rolling sushi.
However, this can create food safety risks causing health departments to crack down on
practices around the handling of sushi rice, which is often held for up to several hours
in the temperature "danger zone".
In the sushi process, pH monitoring is considered to be essential and a number of our
customers are required to maintain a record of hold times and pH levels.
Most municipalities require that sushi rice is maintained below a pH of 4.6. The
procedures around this standard can vary from a full Hazard Analysis Critical Control
Points (HACCP) plan for sushi to health department testing. Fortunately, the pH can be
controlled with rice vinegar, a traditional ingredient used in sushi rice.
Probe Features
Low Temperature Glass Formulation
Low temperature (LT) glass ensures fast stabilization and more accurate results at lower
temperatures. This is beneficial since many food products are stored at low temperatures.
Calibration
tags
Battery
indicator
Unstable
tag
Measurement
unit
Digits
"Sto" will be
displayed when
the calibration
is saved.