Schaller RH2 User manual

78,0°F | 6,16% | 456kg/m
3
| -27,3td | 0,64aw | 51,9%r.H. | 14,8%abs | 100,4g/m
2
| 09m/s | 4,90Ugl | 1
User Manual
Always read this user manual before using the humimeter RH2!
humimeter RH2
water activity measuring chamber
for determining the water activity of food
Moisture meter
Version 2.5

humimeter RH2 aW value measuring chamber user manual
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Your humimeter RH2 at a glance
The main unit
No. Name
1 Connector for external sensor
2 USB port (optional)
3 Display
4 Keypad
5 Rubber protection cover
3
1
2
4
5

Page 3
Rear of the main unit
No. Name
1 Battery compartment
1

humimeter RH2 aW value measuring chamber user manual
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The water activity measuring chamber
No. Name
1 Screw-top jar
2 Protective grid
Measurement Measuring range Resolution Accuracy
aw value 0 to 1 0.001 aw
calibration: 0.00 to 0.98 see "15.2 Technical data"
temperature °C 0 °C to +50 °C 0.1 °C +/- 0.5 °C (at 25 °C)
temperature °F 32 °F to 122 °F 0.2 °F +/- 0.5 °F (at 77 °F)
The display
No. Name
1 Product type
2 Water activity (see "7.1 Definition product
types")
3 Display symbols
4 Temperature display
1
2
4
3
1
2

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The display symbols
Symbol Name Symbol Name
Enter No
Up Change input level
Down OK
Back Change menu
Enter numbers Enter data
Enter letters View measurements
Continue / go right Delete measurements
Left On/off button, display
light
Yes Save measured value
Auto save Hold function
The menus
The device has three different menus: product selection, Data Log and main menu:
Product selection menu
No. Name
1 Change menu
2 Display illumination / device on/off
3 For changing the product type
21 3

humimeter RH2 aW value measuring chamber user manual
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Data Log menu
No. Name
1 Change menu
2 Display illumination / device on/off
3 Save measured value
4 Show the last recorded values
Main menu
The main menu comprises the following menu items:
• Edit Logs:
Manual Logs, Auto Logs,Clear Logs
• Print Logs:
Last Log, All Logs,Clear Logs
• Send Logs:
Manual Logs, Auto Logs,Clear Logs
• Options:
Bluetooth, Date/Time, Log Time, Emission ratio, Language, Unlock, °C/°F, BL On
Time, Auto Off Time, Calibrate, Materialcalib., Online Send, Password, Reset
• Status
21 3 4

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Table of contents
Your humimeter RH2 at a glance ������������������������������������������������� 2
The main unit ..........................................................................................................2
Rear of the main unit ...............................................................................................3
The water activity measuring chamber ..................................................................... 4
The display ...............................................................................................................4
The display symbols .................................................................................................5
The menus ...............................................................................................................5
1� Introduction ������������������������������������������������������������������ 11
1.1 Information about this operating manual ..............................................11
1.2 Limitation of liability ..............................................................................11
1.3 Symbols used in this manual .................................................................12
1.4 Customer service ..................................................................................12
2� For your safety �������������������������������������������������������������� 13
2.1 Proper use ............................................................................................13
2.2 Improper use ........................................................................................13
2.3 User qualications .................................................................................13
2.4 General safety information ....................................................................14
2.5 Warranty ..............................................................................................14
3� On receipt of your device �������������������������������������������� 15
3.1 Taking the device out of its packaging ................................................... 15
3.2 Making sure that all of the components have been included .................15
3.2.1 Scope of supply ....................................................................................15
3.3 Inserting batteries .................................................................................16
4� Using the device - Basics ���������������������������������������������� 16
4.1 Switching on the device ........................................................................16
4.2 Selecting the product type ....................................................................17
4.3 Exchanging the sensors .........................................................................17

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4.4 Taking a measurement ..........................................................................17
4.5 Switching the device off ........................................................................17
5� The measuring process ������������������������������������������������� 18
5.1 Preparing a measurement .....................................................................18
5.2 Taking a measurement ..........................................................................18
5.3 Adjustment behaviour of the sensor ......................................................21
6� Saving your readings ��������������������������������������������������� 22
6.1 Hold function - Freezing the displayed values ........................................22
6.1.1 Activating the Hold function in the Options menu ................................. 22
6.1.2 Using the Hold function ........................................................................22
6.2 Saving your readings manually ..............................................................23
6.2.1 Saving individual readings .....................................................................23
6.2.2 Saving several readings (a measurement series) at the same time .......... 25
6.3 Auto save function (time-based) ............................................................26
6.3.1 Activating the Auto save function in the Options menu ......................... 26
6.3.2 Auto save function: Saving measured values ......................................... 26
6.4 Viewing individual readings ...................................................................27
6.5 Viewing individual readings from a series of measurements ...................28
6.6 Deleting all measured values (data log) .................................................28
6.7 Deleting individual measurement series .................................................29
6.8 Deleting individual values from a single series of measurements ............30
7� Product types ���������������������������������������������������������������� 31
7.1 Denition product types ........................................................................31
7.2 Denition water activity ........................................................................32
7.3 Application range .................................................................................34
8� Using the LogMemorizer program ������������������������������ 35
8.1 Installing/opening the program .............................................................35
8.2 Exporting measured values to a computer .............................................35

Page 9
9� Checking the device’s status ���������������������������������������� 38
10. Conguringthedevice������������������������������������������������� 39
10.1 Turning on Bluetooth ............................................................................39
10.2 Adjusting the date/time .......................................................................39
10.3 Setting the emission ratio ...................................................................... 40
10.4 Selecting a language .............................................................................40
10.5 Activating options .................................................................................41
10.6 Deactivating options ............................................................................. 41
10.7 Selecting °C/°F ......................................................................................42
10.8 Reducing the device’s power consumption ............................................42
10.8.1 Conguring the display illumination time .............................................. 42
10.8.2 Conguring automatic switch-off ......................................................... 43
10.9 Calibrating the device ........................................................................... 43
10.10 Conguring the material calibration function ........................................ 43
10.11 Online Send ..........................................................................................43
10.12 Changing the password ........................................................................44
10.13 Resetting the device to its factory settings ............................................. 45
11� Cleaning and maintenance ������������������������������������������ 46
11.1 Changing the batteries ......................................................................... 46
11.2 Care instructions ...................................................................................46
11.3 Cleaning the device .............................................................................. 46
12� Checking the calibration ���������������������������������������������� 47
12.1 Preparing the water activity measuring chamber ..................................47
12.2 Determining the deviation ..................................................................... 48
13� Faults ����������������������������������������������������������������������������� 49
14� Storage and disposal ���������������������������������������������������� 51
14.1 Storing the device .................................................................................51
14.2 Disposing of the device .........................................................................51

humimeter RH2 aW value measuring chamber user manual
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15� Device information ������������������������������������������������������� 52
15.1 EC declaration of conformity ................................................................. 52
15.2 Technical data ....................................................................................... 56
16� Notes ����������������������������������������������������������������������������� 58

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1. Introduction
1.1 Information about this operating manual
This operating manual is designed to enable you to use the humimeter RH2 safely and
effectively. It is part of the device, has to be stored nearby and must be easily acces-
sible to users at all times.
All users are required to carefully read and make sure that they have understood this
operating manual before using the humimeter RH2. All of the safety and operating
instructions detailed in this manual have to be observed to ensure the safety of the
device.
1.2 Limitation of liability
All of the information and instructions provided in this operating manual have been
compiled on the basis of the current standards and regulations, the state of the art,
and the extensive expertise and experience of Schaller Messtechnik GmbH.
Schaller Messtechnik GmbH does not accept any liability for damage associated with
the following, which also voids the warranty:
• Non-observance of this operating manual
• Improper use
• Inadequately qualified users
• Unauthorised modifications
• Technical changes
• Use of unapproved spare parts
This fast measuring procedure can be affected by a range of different factors.
We, as the manufacturer, do not accept any liability for any incorrect measurements
and associated consequential damage.

humimeter RH2 aW value measuring chamber user manual
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1.3 Symbols used in this manual
All of the safety information provided in this manual is shown with a corresponding
symbol.
CAUTION
It is essential to observe this warning. Non-compliance can lead to injury.
ATTENTION
It is essential to observe this warning. Non-compliance can lead to damage to
property or equipment.
iInformation
This symbol indicates important information that enables users to use the de-
vice more efficiently and cost-effectively.
1.4 Customer service
For technical advice, please contact our customer service department at:
Schaller Messtechnik GmbH
Max-Schaller-Straße 99
A - 8181 St.Ruprecht an der Raab
Telephone: [phone]
Fax: [phone] - 901
E-Mail: [e-mail]
Internet: www.humimeter.com
© Schaller Messtechnik GmbH 2022

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2. For your safety
The device complies with the following European directives:
• Restriction of Hazardous Substances in Electrical and Electronic Equipment
(RoHS)
• Electromagnetic compatibility (EMC)
The device corresponds to state-of-the-art technology. However, it is still associated
with a number of residual hazards.
These hazards can be avoided through strict observance of our safety information.
2.1 Proper use
• Easy to use device for quickly measuring the water activity of food
• Easy to use device for climate and environmental applications
2.2 Improper use
• The device must not be used in ATEX.
• The device is not waterproof and must be protected from water and fine dust.
2.3 User qualifications
The device must only be operated by people who can be expected to reliably take the
measurements. The device must not be operated by people whose reaction times may
be slowed due to, e.g. the use of drugs, alcohol or medication.
All persons using this device must have read, understood and follow the instructions
provided in the operating manual.

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2.4 General safety information
The following safety information has to be observed at all times to avoid damage to
objects and injury to people:
• Remove the batteries if the device is not used for a prolonged period of time
(4 weeks).
• In case of damages or loose parts on the device, remove the batteries and con-
tact Schaller Messtechnik GmbH or your dealer
All of the device’s technical features have been inspected and tested before delivery.
Every device has a serial number. Do not remove the tag with the serial number.
CAUTION
Risk of injury
Lacerations caused by breaking the ampoules during removal.
►Remove the ampoules from the packaging by their base, as shown in pic-
ture 66 on page 48.
►Avoid putting stress on the predetermined breaking point, as shown in
picture 67 on page 48.
2.5 Warranty
The warranty does not apply to:
• Damage resulting from non-observance of the operating manual
• Damage resulting from third-party interventions
• Products that have been used improperly or modified without authorisation
• Products with missing or damaged warranty seals
• Damage resulting from force majeure, natural disasters, etc.
• Damage from improper cleaning
• Damage due to leaking batteries

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3. On receipt of your device
3.1 Taking the device out of its packaging
• Take the device out of its packaging.
• Next, make sure that it is not damaged and that no parts are missing.
3.2 Making sure that all of the components have been included
Make sure that all of the components have been included by checking the package
contents against the following list:
3.2.1 Scope of supply
• humimeter RH2
• Water activity measuring chamber
• 4 pieces of twist-off lids
• 2 pieces of screw-top jars 186ml
• 2 pieces of screw-top jars 245ml
• Calibration ampoules (art.no. 10005)
• 4 pieces of AA Alkaline batteries
• Rubber protection cover
• Plastic case
• Operating manual
Optional accessories:
• Replacement set with 14 pieces of screw-top jars 168ml with twist-off lid
• Replacement set with 14 pieces of screw-top jars 245ml with twist-off lid
• 14 pieces of plastic containers 200ml (PET) with twist-off lid
• Calibration ampoules - for checking the calibration of the humimeter RHx series
• humimeter USB data interface module - USB flash drive with software and USB
cable
• Battery operated portable thermal printer (only possible together with humimeter
USB data interface module) - Described in a separate operating manual
• Bluetooth module - Described in a separate operating manual
• Wall holder, mounted on humimeter RH2

humimeter RH2 aW value measuring chamber user manual
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3.3 Inserting batteries
1. Remove the rubber protection
cover. To do so, hold the rubber
protection cover at the upper side
and pull it over (figure 1and 2). In
case of a sensor being connected,
disconnect it beforehand and if
your device is provided with an
optional USB port, remove the protection cap of the USB
socket beforehand too.
2. Take hold of the device with one hand, press your thumb
onto the engraved area of the battery compartment (1)
and drag downwards(2) (figure 3).
3. Insert the batteries with negative and positive terminals
matching those indicated on the battery compartment.
Press down the batteries so that they lay flat on the bot-
tom of the housing (figure 4).
»As soon as all batteries have been inserted, the device
switches on automatically.
4. Push the battery cover onto the housing until it clicks into
place (figure 5). Then mount the rubber protection cover
onto the housing, beginning at the end where the battery
compartment is situated.
4. Using the device - Basics
4.1 Switching on the device
• Press the button for 3 seconds.
»The display will then show the status indicator (figure "9. Checking the device’s
status").
»After inserting the batteries, the device switches on automatically.
1 2
3
4
5

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4.2 Selecting the product type
To do so: The device has to be in the product selection menu.
For an overview of the different product types and the criteria for selecting them,
please refer to "7. Product types".
1. Press the or button to move from one
product to the next Or
2. Press the or button for 2 seconds to open
the product type overview (figure 6).
3. Use the arrow keys to move from one product type
to the next
4. and keep any of them pressed to scroll through the types.
5. Confirm your selection by pressing .
»The product type you selected will now be shown at the top of the display.
4.3 Exchanging the sensors
• If a sensor is already connected, unscrew it counterclock-
wise.
• Then plug the desired sensor into the device until both
threads make contact.
»Pay attention to the elevation in the connector and its
correct positioning (figure 8).
»Do not use excessive force to plug in the sensor, which is
very easy to operate.
• Now tighten the thread.
4.4 Taking a measurement
• For information on how to take a measurement, see section "5. The measuring
process".
4.5 Switching the device off
To do so: The device has to be in the product selection or Data Log menu. It is not pos-
sible to switch off the device when it is in the main menu.
• Press the button for 2 seconds.
6
7
8

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5. The measuring process
5.1 Preparing a measurement
To do so: The device has to have nearly the same temperature than the product being
measured. It is recommended to let your humimeter device adjust to the surrounding
temperature for at least 30 minutes before the measurement.
• Switch on the device (see "4.1 Switching on the
device").
• Connect the desired sensor to the device (see "4.3
Exchanging the sensors").
»If no sensor is connected, the display will show No
Sensor (figure 9).
• Select the desired product type (see "7. Product
types") by pressing or (see "4.2 Selecting the product type").
5.2 Taking a measurement
To do so: Let the device adjust to the surrounding temperature
for at least 30 minutes (see "5.3 Adjustment behaviour of the
sensor").
• Fill the screw-top jar to at least two thirds with material
(figure 10).
»In case of coarse material the screw-top jar should be
filled at least half-way. The higher the filling quantity,
the quicker the adjustment.
»If the filling quantity is too low, this can lead to devia-
tions in the measurement result.
»The material in the screw-top jar must not come into
contact with the metal protective grid! The material
must not enter the inside of the protective grid!
• Close the water activity measuring chamber tightly
(figure 11).
»Let the water activity measuring chamber and the material adjust until the dis-
played measuring value does not change any more over a longer period.
»In case of unpeeled materials such as nuts, the adjustment time may be longer,
as it may take longer until the material releases moisture in its surroundings for
the measurement.
9
10
11

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»The adjustment time is extended when the device
is switched off, as the water activity measuring chamber
is equipped with a fan to accelerate the adjustment
period (figure 12).
• Now take the measured values shown on the display of
the device (figure 13).
»Once the reading has been taken, it can be saved
on the device (see "6.2 Saving your readings manu-
ally" or "6.3 Auto save function (time-based)").
ATTENTION MEDIA COMPATIBILITY
Exposure of the sensor to harmful media, especially solvents, acids, alcohols
and preservatives, can damage the sensor or cause changes in sensor calibration.
►The user is responsible to check the media compatibility before using the
RH2 aw-value. If necessary, a consultation with the sales partner or the
manufacturer has to made.
ATTENTION
Pollution of the sensor with material
If the screw-top jar is filled too high, the sensor can become polluted, which
leads to incorrect measurements.
►Make sure that the metal protective grid does not come into contact with
the material being measured.
ATTENTION
Pollution of or damage to the sensor
By tilting or turning over the filled water activity measuring chamber, the sensor
can become polluted or damaged, which leads to incorrect measurements.
►Make sure to only lift the water activity measuring chamber straight up
into the air.
12
13

humimeter RH2 aW value measuring chamber user manual
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iInformation - Measuring accuracy
This rapid and non-destructive measuring procedure allows you to take multi-
ple moisture readings of the same sample material. When saving the individual
readings, the device will automatically calculate the readings’ average (see
"6.2.2 Saving several readings (a measurement series) at the same time").
iInformation - Incorrect readings
Always make sure to select the correct product type for the material you are
measuring. This prevents taking incorrect readings (see "13. Faults").