Schaller SW1 User manual

User manual
mould and air guard
humimeter SW1
to prevent from health threats
version 1.1_en
© Schaller GmbH
2017

page 2 version 1.1_n
General
Health threat by mould:
The formation of mould always goes along with an increased moisture
concentration in your room. Already a relative humidity of 70% encourages
the growth of mould in living spaces. Increased air humidity can be caused
by conventional activities in the household like cooking, taking a shower or
drying of laundry. Also plants and humans release water, which is emitted
into the surrounded air. Furthermore, in new buildings residual moisture from
building material can be released. In order to prevent an infestation or the
increased growth of mould spores in living spaces, simple measures like
reasonable ventilation and appropriate heating can be taken. If your living
area is already infested with mould, this should be treated rapidly and
effectively, and a new formation should be prevented. The appearance of
mould can also cause allergic reactions of the body as well as inflammatory
reactions and infectious diseases.
User manual
Function Preventing and avoiding mould:
Mount a wall hook on a position with increased potential of mould (e.g. outer
wall) and position the humimeter SW1 device on the hook. Switch on the
instrument by pressing the button for 3 seconds. Select the calibration
curve “Risk of mould” using the arrow keys or . The device switches on
regularly and checks the level of risk. In case of a high or very high risk of
mould an optical alarm is activated. The humimeter SW1 can be activated at
any time by pressing the button for 3 seconds. The instrument clearly
shows the level of risk (no/little/increased/high/very high risk of mould)
immediately.
Function ventilation monitor:
Switch on the instrument and select the calibration curve “Absolute humidity”
using the arrow keys or . Measure the absolute air humidity in a central
position of your room, and subsequently the absolute air humidity outdoors.
For that, go outside and leave the humimeter SW1 there for approx. 10
minutes. If the absolute air humidity outdoors is lower than the air humidity
inside the room, riskless ventilation is possible. On the other hand, if the
outdoor measuring value is higher than the indoor one, ventilation will
increase the risk of mould.

version 1.1_n page 3
Function climate monitor:
Switch on the instrument and select the calibration curve “relative humidity”
using the arrow keys or . Measure the relative humidity in a central
position of your room and let it adjust to the surrounding climate for a few
minutes. The ideal interior air humidity is between 40% and 60% relative
air humidity. Too damp but also too dry air is felt as unpleasant and may
have significant negative effects on your health.
Calibration curves
Definition of calibration curves
Risk of mould:
The calibration curve “risk of mould” clearly evaluates the risk, grouped into 5
risk levels. The risk levels are related directly to the relative air humidity.
calibration curve description unit measuring
range
risk of mould risk of mould No up to
Very high
abs. humidity absolute
air humidity g/m³ 0 to 130 g/m
3
rel. humidity relative
air humidity % rh 0 to 100%
Too high air
humidity favours
the formation of:
microorganisms
bacteria
house dust mites
mould
viruses
allergies
chemical reactions
Too low air
humidity favours
the formation of:
respiratory tract
infections
dry mucous
membranes
bacteria
viruses
allergies
ozone
electrostatic
discharges

page 4 version 1.1_n
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.
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.
Operating the instrument
Switching on: Press for three seconds.
Changing the calibration curve: or .
Menu: Switch on the instrument pressing the key and immediately, during
showing the start logo, press both arrow keys and and keep them
pressed until the main menu appears.
Setting date and time: Menu - 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.
risk level % relative humidity
no < 65
little 65% - 72%
Luftfeuchte
increased 72% - 80%
high 80% - 90%
very high > 90%

version 1.1_n page 5
Changing measuring interval: Menu – Options- Interval
Standard is a measuring interval of 15 minutes. To increase the battery life,
this interval can be exceeded to up to 12 hours. We recommend a measuring
interval of about 15 minutes to one hour.
Datalog: For activating the datalog, effect the following steps:
Unlock: Menu - Options – Unlock
The standard password is the 4-digit serial number. Insert the number and
confirm by pressing OK.
Changing user level: Menu - Options – O User level
For activating the advanced user, highlight this menu item.
Datalog time: Menu – Options – Datalog time
Select your desired interval (except Hold) using the arrow keys and confirm
by pressing OK.
Deactivating interval: Menu – Options – Interval
Select „off” by pressing the button and confirm by pressing OK.
Starting the Autolog / saving measuring values
Back in the measuring window press the key to reach the store menu. For
saving a measuring value or activating an automatic log, press the button.
For completing the AutoLog, switch on the device (if necessary) and press
the button. If you want to add additional data please press the button.
Additional data can also be entered on the PC subsequently.
For returning to the normal use, all menu items have to be reset:
Unlocking by entering the password, changing user level to single user O,
deactivating Autolog (or set to “manual”), changing the interval to 15 minutes,
returning to the measuring window.
Switching on the display lighting: Press the key briefly; the display
lighting switches off automatically after approx. 2 minutes. Pressing any key
activates the display lighting again.
Modifying display lighting time: Menu – Options – BL On Time
The period for display lighting can be modified by pressing the and
keys.
Auto off: The instrument switches off automatically after approx. four
minutes.
Modifying Auto off time: Menu – Options – Auto Off time
The period for switching off can be modified by pressing the and keys.

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Menu level overview – advanced user
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
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
Interval
Language
Unlock
°C/°F
DataLog Time
Userlevel
BL On Time
Auto Off Time
Materialcalib.
Password
Reset
Status
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

version 1.1_n page 7
Design of the device
batteries slot
(flipside)
display of
measuring
value
calibration
curve
ON button
selection of
calibration
curve
warning light
wall holder

page 8 version 1.1_n
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.
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.

version 1.1_n page 9
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.
Changing the batteries
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.
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.

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Technical data
Measurement Measuring range / Resolution / Accuracy
Rel. air humidity: 0 to 100% rh / 0.1%
Calibration: 10 to 90% / ± 2% rh (at 25°C/50%rh)
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)
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: automatic
Data storage: approx. 10,000 measuring values
Menu languages: English, German, French, Italian,
Spanish, Russian
Power supply: 4 pcs. of 1.5Volt AA Alkaline batteries
Life time battery: mould warning function: approx. 12
months
ventilation monitor: approx. 1300
measurements
Auto Off time: after approx. 4 minutes
Power consumption: 30 mA (with display lighting)
Display: 128 x 64 matrix display,
with LED backlight
Dimensions housing: 166 x 64 x 30 mm
Weight: 210g (with batteries)
Protection class: IP 40
Scope of supply: humimeter SW1, 4 x 1.5Volt AA Alkaline
batteries, manual

version 1.1_n page 11
!IMPORTANT! Please read
Common reasons for incorrect measurements
•Don´t position the instrument at a wall that was treated with
mould remover recently
•Sunlight or other sources of heat or cold that doesn´t correspond
to the surrounding temperature
•Dripping or sprayed water
•Danger of condensation because of changing temperature
•Polluted moisture sensor
•Foreign objects on the sensor
•Measuring errors due to too short conditioning time
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.F. ±0.7% ±0.6% ±0.6%
50%r.F. ±3.5% ±3.2% ±3.0%
90%r.F. ±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%.

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Short manual:
Mould warning function:
Calibration curve: Risk of mould
Insert batteries – hang instrument on the wall
In case of a mould risk the warning light is blinking.
Ventilation monitor:
Calibration curve: Absolute humidity
If the measuring value INDOORS is HIGHER you can ventilate.
INDOORS - OUTDOORS - VENTILATE?
If the measuring value INDOORS is LOWER you may NOT
ventilate.
Climate monitor:
Calibration curve: relative humidity
Ideal interior air humidity: 40%-60%
A too high or too low value is felt as
unpleasant and may cause health risks.