Schaller humimeter RH5.1 User manual

User manual
paper moisture meter RH5.1
with sword-sensor
version 2.0_en
© Schaller GmbH
2012

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User manual
Positioning the instrument
Insert the sword-sensor into the stack for only approx. 10 cm, and push it a
few more centimetres into the stack every 10 seconds. Let your humimeter
RH5 adequately adjust to the material (at least five minutes) before you start
to measure, particularly when the material pile was stored at a different
temperature than the device. When removing the sword-shaped sensor
please ensure that there is no up or down movement, because this could
deform the sensor. For heavy stacks and rolls please use the optionally
available sword sensor holder and the tool for removing the sword sensor
holder.
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.
List of calibration curves
calibration curve description unit measuring
range
rel. humidity relative humidity of air % rh 0 to 100%
dew point dew point
°C
resp.
°F
-55 to +60°C
r.
-67 bis 140°F

version 2.0_ 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.
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.
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 60 hours). Back in the normal
application range, the sensor will return to the indicated accuracy
automatically.

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Design of the device
batteries slot
(flipside)
measuring
value
calibration
curve
ON button
temperature
selection of
calibration curves
air humidity and
temperature sensor

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type selection menu
store menu
main menu
next calibration curve
p
revious 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 suppliers
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
Light ON Time
Auto OFF Time
Calib.
Material calib.
Setting
Password
Reset
Status
Menu level overview

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Operating the instrument
Switching on: Press for three seconds.
Changing the calibration curve: or .
Setting date and time: 2 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 four 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).
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
Automatic single-point adjustment at 50% humidity standard
Selection of menu language (DE, EN, FR, IT, ES, RU)
Display of temperature in Celsius or Fahrenheit
Single-point adjustment with 50% humidity standard
For the adjustment the appropriate calibration equipment as well as
calibration ampoules resp. humidity standards of 50 % r.h. are required.

version 2.0_ page 7
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 over night – 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. Put in the first gasket ring in the upper part of the calibration device.
2. Push in the sword sensor in the upper part as shown in the picture.
3. Now put the second gasket ring into the upper part.
4. Lay in the textile pad in the bottom part of the calibration device, and
pour the humidity standard carefully at the textile pad.
5. Now put the third gasket ring into the bottom part.
6. Fit the metal ring on the third gasket.
7. Take the upper part with the RH5.1 and attach these carefully at the
bottom part of the calibration device.

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8. Pick up the RH5 together with the calibration device STRAIGHT and
DON´T TURN IT AROUND. Screw it up like shown in the picture.
Then put the RH5 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
(2.0% r.h.) , 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 .
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 humidity
around 50% now.

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If you made a mistake during the setting, you can reset to the factory
calibration as follows:
Reset to factory calibration
1. Press the button 2 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.
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 sensors resp. the whole measuring instrument and the material
to measure resp. the air.
In order to fasten the conditioning, the following proceedings are possible:
Spaced insertion of the sword sensor
oInsert the sword-sensor into the stack for only approx. 10 cm, and push it
a few more centimetres into the stack every 10 seconds.
In case of a high temperature difference repeat this action – if necessary
several times!
oIf you use the sword sensor holder, please ensure that both the sword
sensor and the sword sensor holder are adjusted to the surrounding
temperature of the material.
In this case insert the sword sensor holder at frequent intervals and leave
the sword sensor in the sword sensor holder for an appropriate period.
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

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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
humimeter RH5.1 instruments 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 will also receive a
calibration certificate.
Changing the batteries
Press with your finger onto the arrow of the battery cap und 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.
Exemption from liability
For miss-readings 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
resp. 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 2.0_ page 11
Technical data
Measurement: Measuring range / resolution / accuracy
rel. humidity: 0 to 100% rh / 0.1%
calibration 10 to 90% / ±2.0% rh (at 25°C)
temperature °C: -10 to +60°C / 0.1°C / ±0.3°C (at 25°C)
temperature °F: 14 to 140°F / 0.3°F / ±0.5°F (at 77°F)
dew point °C: -55 to +60°C / 0.1°C
dew point °F: -67 to 140°F / 0.3°F
Operation 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. 1.5Volt AA Alkaline batteries
(for approx. 1800 measurements)
Auto Off time: after approx. 4 minutes
Power consumption: 30 mA (with display lighting)
Display: 128 x 64 matrix display,
with LED backlighting
Dimensions housing: 145 x 63 x 29mm
Dimensions sword sensor: 295 x 20 x 4mm
Weight: approx. 260g (incl. batteries)
Protection class IP 40
Scope of supply 4 pcs. 1.5Volt AA Alkaline batteries,
user manual

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!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 assumed paper 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.