GANN HYDROMETTE BL User manual

1
Hydromette BL Compact RH-T
Operating Instructions
Version2.0
EN
HYDROMETTEBL
COMPACT RH-T
RH-T flex

2
Hydromette BL Compact RH-T
Table of Contents
0.1 Publication Statement..............................................................4
0.2 General Notes............................................................................5
0.3 WEEE Directive 2002/96/ECLawon Electricaland
Electronic Equipment................................................................6
1Introduction...................................................................................7
1.1 Description.................................................................................7
1.2 Device Layout and Button Assignment.................................8
1.3 DisplaySymbols........................................................................9
2Basic Functions .........................................................................10
2.1 Switching on the Device/Ready Mode.................................10
2.2 Displayin Measuring Mode..............................................11
2.3 Setting Menus..........................................................................12
2.3.1 Measurement Menu (Main Menu)..........................12
2.3.2 Measuring Mode Selection Menu (Ring Menu)...13
2.3.3 Maximum Value Display..........................................16
2.3.4 Minimum Value Display...........................................17
2.3.5 Saved Menu..............................................................18
2.4 Other Functions.......................................................................19
2.4.1 Automatic Switch-off................................................19
2.4.2 Battery Monitoring....................................................19
3Specifications .............................................................................20
3.1 Technical Data.........................................................................20
3.2 Prohibited Environmental Conditions...................................20
3.3 Measuring Ranges..................................................................21

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Hydromette BL Compact RH-T
4Application Instructions...........................................................24
4.1 Measuring Air Humidity..........................................................24
4.1.1 Absolute Humidity....................................................24
4.1.2 Moisture Saturation..................................................24
4.1.3 Relative Air Humidity................................................25
4.1.4 Equilibrium MoistureContent 25
4.1.5 Water Activity (AW)..................................................25
4.1.6 Wet-bulb Temperature.............................................26
4.1.7 Enthalpy.....................................................................28
4.2 Measuring the Temperature..................................................28
4.2.1 Dew Point..................................................................29
4.2.2 DewPoint Dependentonthe Air Temperatureand
the Rel. Humidityfor Condensation Calculation..30
4.3 Handling the Hydromette.......................................................31
4.4 Sorption Isotherms..................................................................32
4.4.1 Building and Insulation Materials...........................35
4.4.2 Wood..........................................................................39
5Appendix ......................................................................................41
5.1 Material Table..........................................................................41
5.2 References...............................................................................42
5.3 General Concluding Remarks...............................................42
Graphical short operating instructions in the centre 
p. 22-23

Introduction
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Hydromette BL Compact RH-T
0.1 Publication Statement
This publication replaces all previous versions. It may not be
reproduced in anyform or processed, duplicated or disseminated
using electronic systems without the written permission of Gann
Mess- u. Regeltechnik GmbH . Subject to technical and
documentary changes. All rights reserved. This document was
prepared with the required care. Gann Mess- u. Regeltechnik
GmbH accepts no liabilityfor errors or omissions.
GANN Mess- u. Regeltechnik GmbH, Gerlingen, Germany.
07.11.2014

Introduction
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Hydromette BL Compact RH-T
0.2 GeneralNotes
This measuring device fulfils the requirements of the applicable
European and national directives (2004/108/EC) and standards
(EN61010). Appropriate declarations and documentation are held
by the manufacturer. To ensure trouble-free operation of the
measuringdeviceandoperationalreliability,the usermustcarefully
readthe operatinginstructions.Themeasuring device mayonlybe
operatedunderthe climaticconditions specified. These conditions
can be found in Chapter 3.1 "Technical data". This measuring
device maylikewise onlybe used under the conditions and for the
purposes it was designed for. Operational reliability and
functionality are no longer ensured if the device is modified or
adapted. Gann Mess- u. Regeltechnik GmbH is not liable for any
damagearisingfrom suchmodificationsor adaptations. The risk is
borne bythe user alone.
The notes andtables intheseinstructions on permitted or
normal humidity conditions in practice and the general
definitions of terms have been taken from the specialist
literature. No responsibility can therefore be taken bythe
manufacturer for the correctness of this information. The
conclusions to be drawn from the measurement results
are relatedto the individualconditions and the knowledge
drawn from professional experience for each user.
The measuringdevicemaybe operated in residential and
commercial areas, as the stricter class B for emitted
interference (EMC) has been adhered to.
Thedevicemaynotbeoperatedintheimmediate
areaofmedicalequipment(heartpacemakers,
etc.).
Themeasuringdevicemayonlybeproperlyused
asdescribedintheseinstructions.

Introduction
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Hydromette BL Compact RH-T
Keepthe device and accessories outofthe reachof
children!
Gann Mess-u. RegeltechnikGmbHaccepts no liabilityfor damage
resultingfrom non-adherencetothe operatinginstructionsor bynot
taking proper care during transport, storage or operation of the
device, even if this requirement for care is not specifically
addressed in the operating instructions.
0.3 WEEE Directive 2002/96/EC Law on Electrical
and ElectronicEquipment
Disposal of packaging, the battery and the device must be
undertakeninaccordancewiththe legalrequirementsata recycling
centre.
The device was manufactured after November 7, 2014

Introduction
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Hydromette BL Compact RH-T
1 Introduction
1.1 Description
The Hydromette BL Compact RH-T is a precise thermo-
hygrometer for quick measurement of relative air humidityand air
temperature. Using programmed sorption-isotherms, the weight
andmass percentages canbedetermined for various building and
insulationmaterials, as well as hardwoods and softwoods. Due to
the thin sensor tube (5.5 mm diameter), it is eminently suited to
moisture analyses, damage evaluation, dehumidifying buildings
and checking the readiness of floor and wall coatings. Additional
features includesingle-handedoperation,integratedmeasurement
probe and a 3-line LCD screen for the simultaneous displayof air
humidity, air temperature and dew point.
The Hydromette BL Compact RH-T flex T model has a flexible
sensor tube (6.5 mm diameter, swan neck) and is therefore
excellent for measurements of points that are difficult to access.

Introduction
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Hydromette BL Compact RH-T
1.2 Device Layout and ButtonAssignment
Sensor
Display
Up button
Measurement
button
On/off button
Down button

Introduction
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Hydromette BL Compact RH-T
1.3 Display Symbols
Main menu symbols
Other symbols
Temperature in °C
Dew point (Dp) in °C
Air humidity in %
Air humidity in %
Min/Max display
Dead battery
Temperature in °C
Memory location 1
Measured value is held;
ready for measurement

Basic functions
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Hydromette BL Compact RH-T
2 Basic functions
2.1 Switching on the Device/ReadyMode
The device is switched on bypressing the "on"button .
After the startphase,the mainmenuappearsinthe"rh" measuring
mode (see also section 2.3.2)
Last value mease8(s)] TJ.-.3.58 272.67 Tm1 0 0 1 208.9(8(s)] TJ 1 152.562.989.2 Tmi Tfn Tf1( )-%0(s)] TJETBT1 0 0 19281.562.989.2 Tm25( )] TJETBT/F1 9.025 Tf1 0 0 1 152.55122.2 Tm[( )] TJET EMC /P <</MCI2 11/Lang (en-US)>> BDC BT1 0 0 1 152.5 1 86.38 Tm[( )] TJET EMC /P <</MC13 10/Lang (en-US)>> BDC BT/F4 9.025 Tf1 0 0 1 152.519 50.55 Tm[rh)-H9-25(l)5 Tf[rh bvmt9-25(")] TJETBT1 0 0 14 13.519 50.55 Tm[( )] TJET EMC /P <</MC1ID 4/Lang (en-US)>> BDC Bf1 0 0 1 152.50 142.55 Tm[( )] TJET EMC /P <</MC1ID 5/Lang (en-US)>> BDC Bf1 0 0 1 152.11 205.67 Tm[(L)29(a)-25(s)-25(t )53(m)-27(e)-25(a)-25(s)-uerem r 5
Lare ue55t9-29Tfn Tft1( )-)7855t)

Basicfunctions
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Hydromette BL Compact RH-T
2.2 Display in MeasuringMode
Measured value in %
"Hold" symbol signals readiness to
make a measurement
Measured temperature in °C
Calculated dew point (Dp)
in °C
A measurement is started by pressing the "M" button. During the
measurementprocess,the"%" symbolblinks and the values adapt
to the surrounding conditions. After releasing the "M" button, the
"%" symbol is displayed steadily and the "Hold" symbol also
appears.
The device is now in Readymode.
Press the "M" button again to start a new measurement.
Approx. 40 seconds after releasing the measurement button, the
device switches itself off automaticallyto save batterypower. If the
device is switched on again, the last value measured is shown on
the display.
Figure 2-2:
measuring mode

Basic functions
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Hydromette BL Compact RH-T
2.3 SettingMenus
If the"up"or "down" buttons are pressed in Ready mode, the
various setting menus are shown in sequence:
1. Measurement menu (Ready mode): The measuring
process can be carried out here
2. Measuring mode selection: Here you can specify the
measuring mode (section 2.3.2)
3. Maximum value display: The largest value measured is
shown here (section 2.3.3)
4. Minimum value display: The smallestvaluemeasuredis
shown here (section 2.3.4)
5. Saved menu: The last 5 values measured can be called
here (section 2.3.5)
2.3.1 Measurement Menu (Main Menu)
The last measurement with the note "Hold" is shown here.
In this menu, a new measurement can be started bypressing the
"M" button.
Duringthe measuringprocess,the "Hold" symboldisappears from
the display. After releasing the "M" button, the measured value is
saved. The "Hold" symbol is displayed again.
If the new measured value is larger than the previous maximum
value, "Max" flashes on the display. If the value is not to be saved,
the "M" button must be pressed briefly. If the value is not to be
saved, a new measurementis startedwitha long press on the "M"
button without changing the previous maximum values.

Basicfunctions
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Hydromette BL Compact RH-T
2.3.2 Measuring Mode Selection Menu (Ring Menu)
In this menu, the various modes for the BL Compact RH-T can be
set.
The currently active mode is selected with a short press of the M
button. The mode then begins to blink. Now a mode can be
selectedwiththe Upand Down buttons and confirmed with a short
press on the Mbutton.
The BL CompactRH-Thas 7 different settingmodes,whicharerun
through in the following increasing sequence:
Figure 2-3: measuring mode selection menu
Building material 11-25
Relative humidity
EMC
Absolute humidity
Enthalpy
Wet-bulb
thermometer
Water activity
Wood 32-33

Basic functions
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Hydromette BL Compact RH-T
The selectedmodechangesthedisplayofthe measurementmenu.
Depending on the mode, the appropriate physical dimension is
displayed:
Measuring mode "rh" (relative humidity):
the relative humidity (in %), the temperature (in °C)
and the dewpoint(in °C) are displayed
Measuring mode „UGL“(Equilibrium moisture content):
The relative humidity (in %), the temperature (in °C)
and the equilibrium moisture content (in %) are
displayed
Measuringmode"Ah" (absolutehumidity):
the relativehumidity(in%) andthe absolutehumidity
(in g/m³i.e. grammesofwater in1m³of air)
Measuringmode"En"(enthalpy):
the relativehumidity(in%) andthe enthalpy(in kJ/k)
are displayed

Basicfunctions
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Hydromette BL Compact RH-T
Measuringmode"to" (wet-bulbthermometer):
the temperature(in°C) andthe wet-bulb temperature
(in °C)are displayed
Measuring mode"Aw" (water activity):
the temperature(in°C) andthe water activity (non-
dimensional)aredisplayed
Measuringmode"Wood":
the wood moisture(in%), the temperature(in°C) and
the selectedwood type are displayed
For informationonthe woodtypes, seeChapter5.1
Measuringmode"Buildingmaterial":
the materialmoisture(inweight%), the temperature
(in °C)and the selectedbuildingmaterial are
displayed
For information on the building material types, see
Chapter 5.1
Information and explanations on the individual measuring modes
can be found in Chapter 4 "Application instructions"

Basic functions
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Hydromette BL Compact RH-T
2.3.3 Maximum Value Display
In this menu, the maximum air humidity value measured in a
measurement sequence is displayed. This function is only
available in the "rh" measuring mode.
If a maximum value is to be deleted, the
displayed value must be selected with a short
press on the "M" button.
The value blinks andcannow bedeletedwith
a long press ofthe "M" button.
Afterwards, only the "Max" symbol and the %
symbol are still blinking. With a further short
press of the "M" button, the entryis confirmed
and the device returns to the Readymode.
With the "M" button, a new measurement can
then be carried out immediately.
Figure 2-4:
maximum value 1
Figure 2-5:
deleted max. value

Basicfunctions
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Hydromette BL Compact RH-T
2.3.4 Minimum Value Display
In this menu, the minimum air humidity value measured in a
measurement sequence is displayed. This function is only
available in the "rh" measuring mode.
If a minimum value is to be deleted, the
displayedvaluemustbe selected with a short
press on the "M" button.
The value blinks andcannow bedeletedwith
a long press ofthe "M" button.
Afterwards, only the "Min" symbol and the %
symbol are still blinking. With a further short
press of the "M" button, the entry is
confirmed and the device returns to the
Readymode.
With the "M" button, a new measurement
can then be carried out immediately.
Figure 2-6:
minimum value menu
Figure 2-7:
deleted min. value

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Hydromette BL Compact RH-T
2.3.5 Saved Menu
In this menu, the last 5 measured values are saved. The view and
the respective units depend on the measuring mode selected.
The memory location number "r1" is
displayed for approx. 1 second, and then
the last measured saved value contained
there is displayed.
You can recognize saved values as there is
no "Hold" symbol in the display.
As soon as you select the saved menu, the memory location
number "r1" is displayed for approx. 1 second, and then the last
measured saved value contained there is displayed.
The last5 measured values are automaticallysaved and stored in
memory locations "r1" to "r5". The last measured value is in
memory location "r1". This is a ring memory. As soon as the sixth
measured value is recorded, the "first" (first measured) measured
value is automaticallyremoved from the memory.
With a short press of the "M" button, the next memorylocation "r2"
is selected and the value contained there is displayed. After
reaching the 5th memorylocation, the first is shown again.
Themenucanbeexitedwiththeup anddown buttons.
Figure 2-8:
memory location "r1"

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Hydromette BL Compact RH-T
2.4 Other Functions
2.4.1 Automatic Switch-off
If no button is pressed within approx. 40 seconds, the device
switches itself off automatically. The current values are retained
and are displayed again after it is switched back on.
2.4.2 Battery Monitoring
If the battery symbol appears in the display, the battery is
dead and must be renewed
A list of battery types that can be used can be found in the
"Technical data" chapter.

Specifications
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Hydromette BL Compact RH-T
3 Specifications
3.1 TechnicalData
Display: 3-line display
Displayresolution: 0.1 %
Response time: < 2 s
Storage conditions: + 5 to + 40 °C
- 10 to + 60 °C (short-term)
Operating conditions: 0 to + 50 °C
- 10 to + 60 °C (short-term)
Power supply: 9 V block battery
Approved types: type 6LR61 or type 6F22
Dimensions: 180 x 50 x 30 (L x W x H) mm
Weight: approx. 320 g
3.2 Prohibited EnvironmentalConditions
Condensation, air humidity continuously too high
(> 85 %) and damp
Permanentpresenceofdustandcombustiblegases, fumes
and solutions
Environmental temperatures continuously too high (> +50
°C)
Environmental temperatures continuously too low
(< 0 °C)