HANNA instruments HI98161 Food Care pH Meter Instructions
- August 16, 2024
- HANNA instruments
Table of Contents
HANNA instruments HI98161 Food Care pH Meter Instructions
pH / Temperature Meter for Food
HI98161 is a professional portable pH and temperature meter with a probe designed specifically for pH measurement in the Food sector.
- Waterproof
- IP67 rated waterproof, rugged enclosure
- CAL Check™
- Alerts users to problems during calibration including dirty/broken electrode, contaminated buffer and overall probe condition
- Automatic or manual temperature compensation
- pH sensors incorporate a builtin temperature sensor
- Calibration
- Up to a five-point calibration with seven standard buffers and five custom buffers
- Approximately 200 hour battery life
- Powered by (4) 1.5V AA batteries
- Clear display
- Dot matrix display with multifunction virtual keys
- Auto hold
- Automatically holds the first stable reading on the display
- Calibration timeout
- Alerts when calibration is due at a specified interval
- Connectivity
- PC connectivity via opto-isolated micro-USB with HI92000 software
- GLP
- GLP data provides data from previous calibration to ensure Good Laboratory Practices are met
- Intuitive keypad
- Important and often used functions such as GLP information, help, range, calibration and backlight have a dedicated button
- Supplied complete
- Each meter is supplied complete with sensor, calibration and cleaning solutions, beakers, PC software and connection cable, instruction manual, quick start guide and batteries in a rugged, custom carrying case
Food care pH Meter
designed for food professionals
Hanna food quality pH meters are rugged and portable with the performance and
features of a benchtop. Five models are available in this series to measure
food, milk, meat, yogurt and cheese. Each model is supplied with an
application specific electrode and cleaning solutions. These waterproof meters
comply to IP67 standards and can be easily operated with one hand.
Backlit Graphic LCD Display
These meters feature a backlit graphic LCD with on-screen help. The graphic
display allows for the use of virtual keys to provide for an intuitive user
interface.
Waterproof Protection
The meter is enclosed in an IP67 rated waterproof casing and can withstand
immersion in water at a depth of 1 m for up to 30 minutes.
Quick Connect Probe
Each meter features an application specific pH/temperature probe with a quick
connect DIN connector to make attaching and removing the probe simple and easy
Calibration Timeout
Alerts when calibration is due at a specified interval
pH Calibration
Choose from seven standard pH buffers and five custom values to obtain up to
five point calibration and achieve high precision readings with a 0.001 pH
resolution and a pH accuracy of ±0.002.
Enhanced Calibration
An “out of calibration range” warning can be engaged to keep the user informed
of the current calibration and help to avoid performing measurements that are
out of the bracketed range.
AL Check
Hanna’s CAL Check™ maintains a history of past calibrations and monitors the
pH electrode and buffers during subsequent calibrations for any signs of wide
variances due to a dirty or broken electrode or contaminated pH buffers.
During calibration, users are alerted to problems should they occur. After
calibration, the electrode’s overall condition is displayed as a percentage.
GLP
Comprehensive GLP functions are directly accessible by pressing the GLP key.
Calibration data, including date, time and calibration values are stored with
logged data for retrieval at a later time.
Data Logging
The log-on-demand feature allows users to store up to 200 samples that can be
later transferred to a PC with the HI920015 USB cable and HI92000 software.
Automatic Temperature
Compensation
pH sensors incorporate a built-in temperature sensor in the tip of the
electrode for a fast and accurate temperature compensated value.
Intuitive Keypad
The fitted rubber keypad has dedicated keys for many important and often used
functions.
These meters also feature two virtual soft keys that navigate the user through
setup and logging of data. The interface is intuitive for any user’s level of
experience.
Auto Hold
Pressing Autoed during measurement will automatically hold the first stable
reading on the display.
Dedicated Help Key
Contextual help is always available through a dedicated “HELP” key. Clear
tutorial messages and directions are available on-screen to quickly and easily
guide users through setup and calibration. The help information displayed is
relative to the setting/option being viewed.
Setup Screen
Our extensive setup screen features a host of configurable options such as
time, date, temperature units and language for help screens and guides.
PC Connectivity
Logged data can be transferred to a Windows compatible PC with the included
HI920015 micro USB cable and HI92000 software.
Long Battery Life
The display of the meter has a battery icon indicator to show the remaining
power.
The meter uses four 1.5V AA batteries that provide up to 200 hours of battery
life.
Supplied Complete in a Rugged Custom Carrying Case
Each meter is supplied complete with sensor, calibration and cleaning
solutions, beakers, PC software and connection cable, instruction manual,
quick start guide and batteries in a rugged, custom carrying case.
The inside compartment of the carrying case is thermoformed to securely hold
and protect all of the components.
Specifications HI98161
| pH* | Range | -2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH |
|---|---|---|
| Resolution | 0.1 pH; 0.01 pH; 0.001 pH | |
| Accuracy | ±0.1 pH; ±0.01 pH; ±0.002 pH | |
| Calibration | up to five-point calibration, seven standard buffers available |
(1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) and five custom buffers
Temperature Compensation| automatic or manual from -20.0 to 120.0°C (-4.0 to
248.0°F)
mV| Range| ±2000 mV
Resolution| 0.1 mV
Accuracy| ±0.2 mV
Relative mV Offset Range| ±2000 mV
Temperature*| Range| -20.0 to 120.0 °C (-4.0 to 248.0°F)
Resolution| 0.1°C (0.1°F)
Accuracy| ±0.4°C (±0.8°F) (excluding probe error)
Additional Specifications| pH Probe| FC2023 PVDF body, pH electrode with
internal temperature sensor, quick DIN connector and 1 m (3.3’ cable)
Slope Calibration| from 80 to 110%
Log-on-demand| Up to 200 samples (100 pH, 100 mV)
PC Connection| opto-isolated USB with HI92000 software and micro USB cable
Input Impedance| 10¹² Ω
Battery Type / Life| 1.5V AA batteries (4) / approximately 200 hours of
continuous use without backlight (50 hours with backlight)
Auto-off| user selectable: 5, 10, 30, 60 min, disabled
Environment| 0 to 50°C (32 to 122°F); RH 100% IP67
Dimensions / Weight| 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”) / 400 g (14.2 oz.)
Ordering Information| HI98161 is supplied with FC2023 pH electrode, HI7004M pH
4.01 buffer solution (230 mL), HI7007M pH 7.01 buffer solution (230 mL),
HI700641 electrode cleaning solution sachet for dairy deposits (2), 100 mL
plastic beaker (2), HI92000 PC software, HI920015 micro USB cable, 1.5V AA
batteries (4), quick start guide, quality certificate and instruction manual
in a rugged carrying case with custom insert.
pH / Temperature Probe for Food
When measuring pH, food products can pose a number of challenges. Samples can
vary in consistency from solid, semi-solid to a slurry with a high content of
solids. These sample types can coat the sensitive glass membrane surface
and/or clog the reference junction.
Designed specifically for measuring pH in food, the FC2023 has a conic tip
shape for easy penetration, an open junction to resist clogging, and a PVDF
food grade plastic body that can be cleaned with sodium hypochlorite. The
FC2023 is an ideal general purpose pH electrode for use in food manufacturing.
PVDF body
Polyvinylidene fluoride (PVDF) is a food grade plastic that is resistant to
most chemicals and solvents, including sodium hypochlorite. It has high
abrasion resistance, mechanical strength and resistance to ultraviolet and
nuclear radiation. PVDF is also resistant to fungal growth.
Low temperature glass
The FC2023 electrode uses Low Temperature (LT) glass for the sensing bulb. The
LT glass tip is a lower resistance glass formulation. As the temperature of
the sensing glass decreases, the resistance of the LT glass will increase
approaching that of standard glass at ambient temperatures. The FC2023 is
suitable to use with samples that measure from 0 to 50°C.
Open junction reference
Clogging of the reference junction is a common challenge faced by food
producers that measure pH in slurries and semi-solid products. The solids can
easily clog the ceramic junction used with standard laboratory pH electrodes.
The open junction design of the FC2023 resists clogging and continues to
provide accurate, stable readings.
Viscolene electrolyte
The viscolene electrolyte offers a hard gel interface between the inner
electrode components and the sample being measured. The electrolyte is silver-
free for use in food products and is maintenance-free.
Conic tip shape
This design allows for penetration into semisolids and emulsions for the
direct measurement of pH in a variety of food products including sauces,
dough, and other semi-solids.
Built-in temperature sensor
A thermistor temperature sensor is in the tip of the indicating pH electrode A
temperature sensor should b e as close as possible to the indicating pH bulb
in o rder to compensate for variations in temperature
| Specifications | FC2023 |
|---|---|
| Description | pre-amplified pH/temperature probe |
| Reference | single, Ag/AgCl |
| Junction | open |
| Electrolyte | viscolene |
| Max Pressure | 0.1 bar |
| Range | pH: 0 to 12 |
| Recommended Operating Temperature | 0 to 50°C (32 to 122°F) – LT |
| Tip /Shape | conic (dial: 6 x 10 mm) |
| Temperature Sensor | yes |
| Amplifier | yes |
| Body Material | PVDF |
| Cable | coaxial; 1 m (3.3’) |
| Connection | quick connect DIN |
Application Importance
One of the most common measurements of food products is pH because of how it affects food characteristics such as shelf stability, texture, and flavor. Foods are generally broken into two groups based on their pH value. These groups include acid foods which have a naturally low pH of 4.6 or below and low-acid foods that have a finished equilibrium pH value greater than pH 4.6 and a water activity greater than 0.85. The low-acid foods can be pH adjusted with the addition of an acid to lower the final pH and become an acidified food.
In food processing, some products require the measurement of pH to meet industry regulations to ensure the quality and safety of goods. A lower pH will help in preventing unwanted bacteria from growing thus extending the shelf life of a product. While food safety is a crucial consideration, understanding the pH of a food product can also help to achieve consistent flavors and textures. Through fermentation and other biological processes, many foodstuffs only achieve their desired qualities at particular pH values or ranges. pH is an essential parameter that requires close observation throughout food production to provide the best possible product.
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References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>