Professional
Portable Cheese pH Meter
The
HI-98165 is a rugged, waterproof, portable Foodcare pH meter that
measures pH and temperature using the specialized FC2423 cheese pH
electrode. This professional, waterproof meter complies with IP67
standards. The HI-98165 is supplied with all necessary accessories to
perform a pH/temperature measurement packaged into a durable
thermoformed carrying case that holds the meters, probes and
calibration buffers securely in place.
- Quick
Connect DIn Connector
- USB
Connection for Data Transfer
- Dedicated
Help Button
pH
is an essential measurement throughout the entire cheesemaking process.
From the initial measurements of incoming milk to the final measurements
of ripened cheese, pH is the most important parameter for cheese quality
and safety control.
Acidification
of milk begins with the addition of bacterial culture and rennet. The
bacteria consume lactose and create lactic acid as a byproduct of
fermentation. The lactic acid produced will cause the pH of the milk to go
down. Once the milk reaches a particular pH, the rennet is added. The
enzymes in rennet help to speed up curdling and create a firmer substance.
For cheesemakers that dilute their rennet, the pH of the dilution water is
also critical; water that is near pH 7 or higher can deactivate the
rennet, causing problems with coagulation.
Once
the curds are cut, stirred, and cooked, the liquid whey must be drained.
The pH of whey at draining directly affects the composition and texture of
the final cheese product. Whey that has a relatively high pH contributes
to higher levels of calcium and phosphate and results in a stronger curd.
Typical pH levels at draining can vary depending on the type of cheese;
for example, Swiss cheese is drained between pH 6.3 and 6.5 while Cheddar
cheese is drained between pH 6.0 and 6.2.
Stainless
Steel Body
The
AISI 316 stainless steel body offers durability in the production
facility and can withstand chloride concentrations that cause
corrosion in other types of alloys.
Conic
Glass Tip
The
conical shaped tip design allows for penetration into solids,
semi-solids, and emulsions for the direct measurement of pH in samples
such as cheese.
Built-In
Temperature Sensor
Errors
in calibration and measurement are eliminated with the Automatic
Temperature Compensation provided by the integrated temperature
sensor.
Besides
being supplied with a unique pH electrode made for cheese, the HI98165
has the Hanna's unique CAL Check™ feature that alerts the user to
potential problems during the calibration process. This is a very
important for the food processor since it is likely that the probe will
be coated with the solids found in the food product being measured. This
coating can easily lead to errors in pH measurement. By comparing
previous calibration data to the current calibration, the meter will
inform the user, with display prompts, when the probe needs to be
cleaned, replaced, or if the pH buffer might be contaminated. After
calibration, the overall probe condition is displayed on screen as a
percentage from 0 to 100% in increments of 10%. The probe condition is
affected by both the offset and slope characteristics of the pH
electrode, both of which can be found in the GLP data.
Pressing
the “AutoHold” virtual key in measurement mode, the meter will freeze
and automatically log a stable reading. An “out of calibration range”
warning can be enabled that will alert the user when a reading is not
within the bracket of calibrated pH values.
The
log-on-demand mode allows the user to record and save up to 200 samples.
The logged data, along with the associated GLP data, can then be
recalled or transferred to a PC with Hanna’s HI920015 micro USB cable
and HI92000 software for traceability in record keeping for specific
product batches. GLP data includes date, time, calibration buffers,
offset, and slope, and is directly accessible by pressing the dedicated
GLP key.
A
contextual help menu based on the screen that is currently being viewed
can be accessed at any time by the press of a dedicated button.
The
high contrast, graphic LCD screen is easy to view outdoors in bright
sunlight as well as in low-lit areas with the backlight. A combination
of dedicated and virtual keys allows for easy, intuitive meter operation
in a choice of languages.
The
compact, durable HI720165 carrying case is thermoformed to hold all
necessary components for taking a field measurement, including the meter
and electrode, beakers, buffer solutions and cleaning solutions.
On-Screen
Features
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.
Calibration
pH calibration features detailed CAL Check™ messages. Users are guided
through the calibration procedure with step-by-step on-screen
instructions.
GLP
Comprehensive GLP functions are directly accessible by pressing the
GLP key. Calibration data, including: date, time, offset, slope and
buffers used in the last calibration can be reviewed.
Features
- Ergonomic, rugged, waterproof (IP67)
design
- Supplied with FC2423 Foodcare pH/Temperature electrode
- Five-point pH calibration with seven standard buffers and five
custom buffers
- CAL Check
- Log-on-demand
- Auto Hold
Specifications
| pH
Range |
-2.0
to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH |
| pH
Resolution |
0.1
pH; 0.01 pH; 0.001 pH |
| pH
Accuracy |
±0.1;
±0.002 pH |
| 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) + five custom buffers |
| pH
Temperature Compensation |
manual
or automatic from -20.0 to 120.0°C (-4.0 to 248.0°F) |
| pH
Input impedence |
10¹²
Ohms |
| mV
Range |
±2000
mV |
| mV
Resolution |
0.1
mV |
| mV
Accuracy |
±0.2
mV |
| Temperature
Range |
-20.0
to 120.0°C (-4.0 to 248.0°F) |
| Temperature
Resolution |
0.1°C
(0.1°F) |
| Temperature
Accuracy |
±0.4°C
(±0.8°F) (excluding probe error) |
| Temperature
Calibration |
manual
or automatic from -20.0 to 120.0°C (-4.0 to 248.0°F) |
| pH
Electrode |
FC2423
Foodcare stainless steel body, pH electrode with internal
temperature sensor, quick connect DIN connector and 1 m (3.3’
cable) |
| Logging
Memory |
200
samples (100 pH and 100 mV range) |
| Connectivity |
opto-isolated
USB with optional HI 92000 software and micro USB cable |
| Automatic
Shut-Off |
user
selectable |
| GLP |
Yes |
| Battery
Type/Life |
1.5V
AA batteries (4) / approximately 200 hours of continuous use
without backlight (50 hours with backlight) |
| IP
Protection |
IP67 |
| Environment |
0
to 50°C (32 to 122°F); RH 100% |
| Dimensions |
185
x 93 x 35.2 mm (7.3 x 3.6 x 1.4”) |
| Weight |
400
g (14.2 oz.) |
Product Manual
Brand : Hanna Instruments
