Schaller RH2 User manual

User manual
Air humidity and temperature moisture meter
humimeter RH2
Version 2.3_en
© Schaller GmbH
2016
Distributore autorizzato : Geass S.r.l. - Torino - Tel.: [phone] - mail : [email protected] - web site : www.geass.com

page 2 version 2.3_en
User manual
Measurement
To switch on the instrument, press the key for three
seconds.
After showing the logo, the measuring window opens and
the current temperature and moisture value is displayed.
In the type selection menu the calibration curves can be
changed by pressing or . The calibration curves saved
in the device can be found in the following list.
Calibration curves
Calibration curve
description
unit
measuring
range
rel. humidity
rel. air humidity
%rh
0 to100%
dewpoint
dewpoint
°C resp. °F
55 to +60°C
-67 to +140°F
abs. humidity
abs. air humidity
g/m³
0 to 130 g/m³
EMC wood
equilibrium moisture
content of wood
% EMC
2 to 30%
(wood moisture)
EMC POM
equilibrium moisture
content of POM
% EMC
0 to 2%
aw value
water activity
0 to 1
CO2
CO2value
ppm
0 to 5000 ppm
IR temperature
temperature
infrared sensor
°C resp. °F
-25 to 125 °C
-13 to 257 °F
empty
for own special
calibrations
%rh

version 2.3_en page 3
Description of definitions
Relative air humidity: indicates the relation between the current water
vapour pressure and the maximal possible water vapour pressure (called
saturation vapour pressure)
The relative humidity shows the degree the air is saturated with water
vapour. For example:
50% relative humidity indicates that at the current temperature and the
current pressure the air is saturated with water vapour for half of its value,
100 % relative humidity means that the air is totally saturated. When the air
has more than 100 % of relative humidity, the excessive moisture would
condense or form fog.
Absolute humidity: shows the contained amount of water in gramme per
cubic metre of air. The absolute humidity is a direct degree for the amount of
water vapour contained in a certain air volume. It shows how much moisture
can maximally condense or how much water has to be evaporated to receive
a certain desired air humidity.
Dew point temperature:The dew point indicates the temperature that the
not completely saturated air has to reach in order to be completely saturated
with water vapour. If the room with the current relative humidity is cooled
down to the dew point temperature, the water vapour begins to condense.
EMC wood: shows the equilibrium moisture content of wood (for timber
stored under these conditions) in % moisture content of wood and the
temperature in the selected unit (°C or °F).
EMC POM: shows the equilibrium moisture content of POM granulate (for
granulate stored under these conditions) in % moisture content and the
temperature in the selected unit (°C or °F).
aw value: indicates the freely available water in a material. It is defined as
the partial vapour pressure of water in a substance divided by the standard
state partial vapour pressure of water at a certain temperature.

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Empty calibration curves: There are another 5 empty calibration curves
stored in the measurement device. These curves can be used for the
calibration of special fruits or customer specific products.
On request Schaller GmbH can develop customized calibration curves for
your product.
CO2: With the CO2sensor and the appropiate calibration curve the air quality
can be measured. The measuring range is up to 5000ppm (parts per million).
The CO2value is the essential criterion for evaluating the air quality.
IR temperature sensor: shows the current temperature of the object
beamed by the sensor. The sensor has a 1:10 optics, which means a
measuring area of 16 cm at a distance of 1 meter.
Info: The sensor is not suited for measuring brilliant or reflective materials!
List of calibration curves
Pressing the or key in the measuring
window for at least 3 seconds, a list with all
available calibration curves appears. Select your
sort by pressing or and confirm by pressing
the key.

version 2.3_en page 5
Application range
Within the normal application range (normal range) the accuracy of the
device is as indicated. A long-term application beyond the normal application
range (max. range), particularly at an air humidity of more than 80%, can
lead to higher measuring errors (+3% after 60hours). Back in the normal
application range, the sensor will return to the indicated accuracy
automatically.
Other instrument functions –overview
Manual saving of single measuring values in a measurement series
Display of measuring series and measuring values directly on the
instrument
Printing the saved measuring series (only with PC interface and printer)
Transfer and saving of measuring series on a PC (only with PC
interface)
Automatic single-point adjustment with 50% humidity standard
Selection of menu language (DE, EN, FR, IT, ES, RU)
Display of temperature in Celsius or Fahrenheit

page 6 version 2.3_en
Design of the device
batteries slot
(flipside)
measuring value
calibration
curve
ON/OFF button
temperature
selection of
calibration curve
connection air
humidity and
temperature sensor
option:
interface
air humidity and
temperature
sensor
connecting plug
LF-TB 120
Moisture and
temperature sensor

version 2.3_en page 7
CO2sensor
With this sensor and the appropriate calibration curve the air quality can be
measured. The measuring range is up to 5000ppm (parts per million).
The sensor is activated after putting it on and tightening it. The CO2sensor
measures in intervals of 15 seconds.
The CO2value is the essential criterion for evaluating the air quality.
The following chart shows the correlation of measuring value and well being:
CO2 value
possible occurance
effect
400
fresh ambient air
comfortable
1000
ventilated classroom
limit of comfortableness
2000
classroom –windows mostly closed
declining concentration
3000
classroom –windows closed
headache
Infrared temperature sensor
Shows the current temperature of the object beamed by the sensor. The
sensor has a 1:10 optics, which means a measuring area of 16 cm at a
distance of 1 meter.
Changing the emission ratio:
2 times - Options –Emission
ratio
The infrared temperature
measurement depends on the
emission ratio of the material to
measure. This value can be modified
according to the measured material.
The standard value entered is 0.950
(for concrete and floor screed).
material
emission ratio
wood
0.940
concrete,
floorscreed
0.950
asphalt
0.950
gypsum
0.925
CO2Sensor
Infrared temperature
sensor
connector

page 8 version 2.3_en
Menu level overview
Type selection menu
Store menu
Main menu
Next calibration curve
Previous calibration curve
Power off
Show last log
Store new log
Power off
Switch lower
Switch upper
Open this menu/enter
Keypad symbols
Measuring window:
Rolling Menu
Power ON / OFF
Switch upper
Switch lower
Save
Hold
Autolog
Watch saved data
Enter supplier´s
data
Menu:
Enter
Switch upper
Switch lower
Exit
Enter numbers
Enter letters
Next or right
Left
Yes
No
Shift
OK
Edit Logs
Manual Logs
Auto Logs
Clear Logs
Print Logs
Last Logs
All Logs
Clear Logs
Send Logs
Manual Logs
Auto Logs
Clear Logs
Options
Date/Time
Datalog Time
Language
Unlock
°C/°F
User level
BLOn Time
Auto Off Time
Calibrate
Materialcalib.
Online Send
Online Print
Adjust
Password
Reset
Status

version 2.3_en page 9
Operating the instrument
Switching on: Press for three seconds.
Changing the calibration curve: or .
Setting date and time: two times - Options –date / time
Set date and time using the button , according to the format indicated
(JJ.MM.TT). After entering the year, press the button for entering the
month and again for entering the day. For changing from date to time also
press the button. After finishing, press for saving the entered data.
Datalog: Select your desired interval in the menu Options –Log Time using
the arrow keys, and confirm by pressing OK. Now in the store menu appears
the symbol . By pressing this symbol you can activate the
AutoLog.
Info: In order to save battery power the device switches off
automatically at a log interval of 1 minute or longer, and activates again
for saving the logs!
For completing the AutoLog, switch on the device (if necessary) and press
the button. If you want to add supplier´s data please press the
button. Supplier´s data can also be entered on the PC subsequently.
Switching on the display lighting: Press the key briefly; the display
lighting switches off automatically after approx. 20 seconds. Pressing any
key activates the display lighting again, and the period for switching off again
is prolonged to 4 minutes. (The display lighting time can be modified in menu
level Options –BL On Time.)
Switching off: Press the key for five seconds. The instrument switches
off after releasing the key. The instrument switches off automatically after
approx. four minutes. (The turn-off time can be modified in menu level
Options –Auto Off Time.)

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Transfer saved data to the PC
To send your saved logs to the PC, connect the
humimeter device to your PC using the USB cable
that was delivered with your device. Carefully
loose the protection cap on your humimeter and
plug in the USB mini B connector. The bigger
connector has to connected to a USB slot on your
PC.
Start the LogMemorizer software on your PC and
switch on your humimeter RH2.
The data transfer can be started on your
humimeter or on the software:
Starting data transfer on the humimeter:
Press the key until you reach the menu (see
image on the right). Then choose „Send Logs“ and
confirm by pressing the key. Now choose
„Manual Logs“ or „Auto Logs“ and confirm with
again. All saved logs will be transferred to your
PC.
Starting the data transfer on your PC:
Press the button „Communication“ in the
LogMemorizer software. A menu with
several options opens (see image).
For transferring the data you can select „get
last manual log“ (the last saved measuring
series is transferred) or „get all manual logs“
(all saved logs are transferred).
If you click on one of these buttons, the
transfer starts immediately.
For the basic adjustments of the software
please look into help file (F1 key).

version 2.3_en page 11
Print saved data
To print your saved data, connect the device to the
printer using the printer cable that was delivered
with your device: Carefully loose the protection
cap on the humimeter RH2. At first plug in the side
of the connector with the close plastic casing at
the humimeter RH2. Then switch on the device.
Not till then the other side of the cable has to be
plugged in at the printer. Switch on the printer by
pressing . Now the green LED is blinking. If it
does not blink, please change the batteries and try
again.
Press the button at your humimeter until you
reach the menu (see image on the right). Choose
„Print Logs“ and confirm by pressing .
Now you can select if you want to print the last
saved measuring series or all saved measuring
series (logs).
Confirm by pressing again. The selected logs
are printed out now.
Info: To save paper, please think of clearing the data storage regularly.

page 12 version 2.3_en
Single-point adjustment with 50% humidity standard
For the adjustment the appropriate calibration equipment as well as
calibration ampoules resp. humidity standards of 50 % rh are required.
Proceedings
Preparation
To ensure as good as possible inspection results it is essential that the
measuring device, the calibration equipment and the calibration ampoules
have approximately the same temperature.
This temperature has to be between 20°C and 26°C.
The best way to ensure the same temperature of the different components is
to store all components together in a room with only small temperature
fluctuations minimum overnight –better for 24 hours.
Components of calibration equipment
In this image you can see the components of the
calibration equipment and a calibration ampoule with
humidity standard.
Assembly of calibration equipment
1. Push in the sensor completely into the upper part.
2. Lie in the textile pad in the bottom part of
the calibration device, and pour the humidity
standard carefully at the textile pad.

version 2.3_en page 13
3. Take the upper part with the RH2 and attach
these carefully at the bottom part of the
calibration device.
4. Pick up the RH2 together with the calibration
device STRAIGHT and DON´T TURN IT
AROUND. Screw it up like shown in the
picture.
Then put the RH2 with the calibration device down
on a table carefully and proceed as follows:
Conditioning the sensor
To achieve best results, let the sensor adjust for two hours.
The temperature has to be between 20°C and 26°C.
If the shown measuring value differs more than the factory tolerance (1.5%
rh), we recommend to carry out a recalibration as follows:
Offset adjustment
1. Leave the measuring device in the calibration equipment, and switch it
on.
2. Press the Rolling Menu button until you reach the main menu.
3. Select the menu item Options by pressing the button and confirm by
pressing .
4. Navigate to Setting using the button and confirm by pressing
again.
5. Enter the superuser password using the buttons resp. and confirm
by pressing .
The superuser password after consignment is the serial number
of the device, shown on the display after switching on the device
or in menu item Status.
6. A query if a setting is desired appears. Confirm by
pressing .

page 14 version 2.3_en
7. Wait until the bar has risen completely. The device
adjusts by itself and automatically jumps back to
the measuring window. The adjustment is
completed now.
8. Check the result before you remove the device from the calibration
equipment. Depending on the temperature the display should show a
water content of about 50% now.
In case of a mistake during the setting, you can reset to the factory
calibration as follows:
Reset to factory calibration
1. Press the button two times to reach the menu point Options.
2. Select the menu item Reset using the button and confirm by pressing
.
3. Enter the superuser password using the buttons resp. and
confirm by pressing .
The query reset? appears on the display.
4. Press the button for resetting the device to the factory calibration.
The software reloads the factory calibration data and reboots the
device. This will need about 15 to 20 seconds.
5. Pressing the button you can exit without any changes.

version 2.3_en page 15
Conditioning of the sensor
The conditioning of the sensor (time until the device shows the actual
measuring value) depends on several parameters. The parameter
responsible for the highest measuring error is a temperature discrepancy
between the sensor/the whole measuring instrument and the material to
measure/the air.
Care instructions
Do not drop the instrument or expose it to excessive temperatures. The
instrument is not waterproof. Do not immerse the sensor in liquid.
The intervals for checking the instrument depend on your operational
demands and the required level of accuracy. In general the drift of the sensor
according to the degree of use (constant humidity or use within the whole
moisture measuring range) is beneath 0.5% per year. You can check
instruments of the humimeter RHx series by yourself using the calibration
equipment (see optional accessories). For a fee, Messtechnik Schaller
GmbH can also carry out a calibration at their factory. On demand you can
also receive a calibration certificate.
Changing the batteries
First of all remove the rubber protection cover. For that, hold the rubber
protection cover at the upper side and pull it over. If your humimeter is
provided with an optional USB port, you have to remove the protection cap
before. Press with your finger onto the arrow of the battery cap and pull it
back.
Remove the empty batteries. Put four new 1.5 Volt AA Alkaline batteries in
the device. Make sure that the position of the battery poles is correct. Press
down the batteries and close the cap.

page 16 version 2.3_en
Exemption from liability
For misreadings and wrong measurements and of this resulting damage we
refuse any liability. This is a device for quick determination of moisture. The
moisture depends on multiple conditions and multiple materials. Therefore
we recommend a plausibility check of the measuring results. Each device
includes a serial number and the guarantee stamp. If those are broken, no
claims for guarantee can be made.
If the battery symbol appears in the measuring window
or if a critical charge of battery is shown in the status,
the batteries have to be changed IMMEDIATELY. If you
do not use your humimeter device for a longer period,
remove the batteries. For eventual resulting damages
we cannot provide any warranty.
In case of a faulty device, please contact Schaller
GmbH (www.humimeter.com) or your dealer.

version 2.3_en page 17
Technical data
External sensors
Measurement: measuring range / resolution / accuracy
Moisture and temperature sensor (12032):
rel. humidity: 0 to 100%RH /0.1%
calibration 10 to 90% /±2.0%rh (at 25°C)
temperature °C: -20 to +85°C /0.1°C /±0.3°C (at 25°C)
temperature °F: -4 to185°F /0.3°F /±0.5°F (at 77°F)
LF-TB 120 (12004):
rel. humidity: 0 to 100%RH /0.1%
calibration 10 to 90% /±1.5%rh (at 25°C)
temperature °C: -20 to +120°C /0.1°C /±0.3°C (at 25°C)
temperature °F: -4 to 248°F /0.3°F /±0.5°F (at 77°F)
CO2sensor (12964):
CO2: 0 to 5000 ppm /1ppm
Calibration: 0 to 5000 ppm /±50ppm (at 25°C)
IR temperature sensor (12513):
IR temperature °C: -25 to 125°C /0.5°C
IR temperature °F: -13 to 257°F /0.3°C
dew point °C: -55 to +60°C /0.1°C
dew point °F: -67 to 140°F /0.3°F

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Measuring instrument:
Operating temperature range: -10°C to 60°C / 14 to 140°F
Storage temperature: -20°C to 60°C / -4 to 140°F
Temperature compensation: automatically
Data storage: approx. 10,000 measuring values
Menu languages: English, German, French, Italian,
Spanish, Russian
Power supply: 4 pcs. 1.5 Volt AA Alkaline batteries
(for approx. 1800 measurements)
Auto Off time: after approx. 4 minutes
Power consumption: 20 mA (with display lighting)
Display: 128 x 64 matrix display,
with LED backlighting
Dimensions housing: 145 x 63 x 24mm
Weight: approx. 210g (incl. batteries)
Protection class: IP 40
Scope of supply: rubber protection cover,
4 pcs. 1.5 Volt AA Alkaline batteries,
user manual
Optional: wooden case

version 2.3_en page 19
Notes
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page 20 version 2.3_en
!IMPORTANT! Please read!
Common reasons for incorrect measurements
Sunlight or other sources of heat or cold that doesn´t correspond
to the surrounding temperature
Dripping or sprayed water
Irreversible damage of the sensor due to aggressive gases
Danger of condensation because of changing temperature
Polluted moisture sensor
Foreign objects on the sensor
Measuring errors due to too short conditioning
To demonstrate the importance of temperature adjustment, the table below
shows measuring errors due to a temperature difference of only 1°C / 1.8°F
between the measuring instrument and the substance to be measured at
different ambient temperatures.
10°C (50°F)
20°C (68°F)
30°C (86°F)
10%r.h.
±0,7%
±0,6%
±0,6%
50%r.h.
±3,5%
±3,2%
±3,0%
90%r.h.
±6,3%
±5,7%
±5,4%
At room temperature (20°C/68°F) and an assumed moisture value of 50%r.h.
a deviation of 1°C / 1.8°F between the measuring sensor and the substance
to be measured results in a measuring error of 3.2%r.h. A deviation of 3°C /
5.4°F would result in a measuring error of over 10%.
Further examples can be found in the Mollier h-x diagram.