GANN HYDROMETTE BL LG 17 User manual

1
Hydromette® BL LG 17
HYDROMETTE®BL
LG 17
Operating Manual
Version 1.0
EN

2
Hydromette®BL LG 17
Table of Contents
0.1 Publication Statement........................................................4
0.2 General Notes ................................................................... 5
0.3 WEEE Directive 2012/19/EU Law on Waste Electrical and
Electronic Equipment.........................................................6
1Introduction.......................................................................... 7
1.1 Description.........................................................................7
1.2 Device Layout and Button Assignment.............................. 8
1.3 Display Symbols.............................................................. 10
2Basic Functions................................................................. 11
2.1 Switching on the Device / Standby Mode ........................ 11
2.2 Display in measuring mode ............................................. 12
2.3 Menu Guidance............................................................... 13
2.3.1 Measurement Menu............................................ 14
2.3.2 Settings .............................................................. 14
2.3.3 Flow Rate........................................................... 15
2.3.4 Averaging of the Display Value .......................... 15
2.3.5 Units Setting....................................................... 16
2.3.6 Languages Setting ............................................. 16
2.3.7 Brightness Setting .............................................. 17
2.3.8 Alarms Limit Value.............................................. 17
2.3.9 Compensation Temperature............................... 18
2.3.10 Compensation Pressure..................................... 18

3
Hydromette® BL LG 17
2.3.11 Minimum / Maximum Value Display.................... 19
2.3.12 Memory Menu .................................................... 19
2.3.13 Measurement Mode Display............................... 20
2.3.14 Graph Measurement Mode................................. 20
2.3.15 Bar Measurement Mode..................................... 21
2.3.16 Continuous Measurement Mode ........................ 21
2.4 Other Functions............................................................... 22
2.4.1 Automatic Switch-off........................................... 22
2.4.2 Battery Monitoring .............................................. 22
2.4.3 Dirty or Defective Sensor.................................... 22
2.4.4 Calibration Error ................................................. 22
3Specifications..................................................................... 23
3.1 Technical Data of the Hydromette®................................. 23
3.2 Technical Data of the Air Velocity Sensor ....................... 23
3.3 Prohibited Environmental Conditions............................... 24
3.4 Measuring Ranges .......................................................... 24
3.5 Transport & Storage Conditions ...................................... 25
4Application Notes .............................................................. 25
4.1 General Notes ................................................................. 25
4.2 Cleaning of the Sensor Head........................................... 26
4.3 Maintenance.................................................................... 27
5Appendix ............................................................................ 27
5.1 General Concluding Remarks.......................................... 27

Introduction
4
Hydromette®BL LG 17
0.1 Publication Statement
This publication replaces all previous versions. It may not be
reproduced in any form 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 has been
prepared with due care. Gann Mess- u. Regeltechnik GmbH shall
not accept any liability for errors or omissions.
GANN Mess- u. Regeltechnik GmbH, Gerlingen, Germany,
01/06/2018

Introduction
5
Hydromette® BL LG 17
0.2 General Notes
This measuring device fulfils the requirements of the applicable
European and national directives (2014/30/EU). Appropriate
declarations and documentation are held by the manufacturer. To
ensure trouble-free operation of the measuring device and
operational reliability, the user must carefully read the operating
instructions. The measuring device may only be operated under the
specified climatic conditions. These conditions can be found in
chapter 3.1 "Technical Data". This measuring device may also only
be used under the conditions and for the purposes it has been
designed for. Operational reliability and functionality are no longer
ensured if the device is modified or adapted. Gann Mess- u.
Regeltechnik GmbH shall not be liable for any damage arising from
such modifications or adaptations. The risk is borne solely by the
user.
The measuring device may be operated in residential and
commercial areas as the stricter class B for interference
emission (EMC) has been complied with.
The device may not be operated in the immediate area of
medical equipment (heart pacemakers, etc.).
The measuring device may only be used for its intended
purpose as described in these instructions. Keep the device
and accessories out of the reach of children!
Measurements must not be carried out on metallic surfaces.
Gann Mess- u. Regeltechnik GmbH shall not accept any liability for
damage resulting from non-compliance with the operating
instructions or by not taking due care during transport, storage or
operation of the device, even if this requirement for care is not
specifically addressed in the operating instructions.

Introduction
6
Hydromette®BL LG 17
0.3 WEEE Directive 2012/19/EU Law on Waste
Electrical and Electronic Equipment
According to the European WEEE Directive, electronic equipment
may not be disposed of in domestic waste. Their components must
be recycled or disposed of separately, because toxic and
hazardous components can cause lasting damage to the
environment if not disposed of properly.
As a consumer, you are obliged under the German Electrical and
Electronic Equipment Act (ElektroG) to return electrical and
electronic equipment free of charge at the end of its service life to
the manufacturer, the point of sale or to public collection points set
up for this purpose. Details are regulated by the respective federal
state law. The following symbol points out these regulations:
With this type of material separation, recycling
and disposal of old equipment, you make an
important contribution to protecting the
environment.
WEEE Directive 2012/19/EU
WEEE No.: DE91414473

Introduction
7
Hydromette® BL LG 17
1 Introduction
1.1 Description
The Hydromette® BL LG 17 is a high-precision air velocity
measuring device (anemometer) for measuring even the smallest
air flows for many areas of application, e.g. living space monitoring,
air conditioning technology, blower-door test, laminar-flow control
etc. The basic unit BL LG 17 is delivered with the air velocity
electrode LG-25 BL and a telescopic handle that makes it possible
to reach difficult to access places. The electrode can also be
screwed onto classic camera tripods for long-term measurements.
With the OLED display, air velocity and air pressure can be
displayed simultaneously or a line or bar chart can be displayed.
The air velocity electrode LG-25 BL is designed for applications
within closed spaces.

Introduction
8
Hydromette®BL LG 17
1.2 Device Layout and Button Assignment
Sensor connection
OLED display
Up button
On/Off button
Measurement button
Down button

Introduction
9
Hydromette® BL LG 17
Fixing screw
Air velocity electrode
LG-25 BL
1/4“ thread -
can be screwed onto
classic camera tripods
Telescopic handle

Introduction
10
Hydromette®BL LG 17
1.3 Display Symbols
Measurement menu
symbols
Air velocity in m / s
Absolute air pressure in
mbar
Measured value is
retained;
ready for measurement
Battery symbol
Compensation
temperature in °C
Pressure setting
Manual / Automatic

Basic Functions
11
Hydromette® BL LG 17
2 Basic Functions
2.1 Switching on the Device / Standby Mode
The device is switched on by pressing the "On" button.
The following is shown on the display if no air
velocity sensor is connected:
“No sensor”.
The device does not function without
connected air velocity sensor.
Therefore, please connect your associated
sensor.

Basic Functions
12
Hydromette®BL LG 17
2.2 Display in Measuring Mode
Measured value in m/s or ft/min
Measured / manual pressure in mbar
Compensation temperature in °C
"Hold" symbol signals readiness to
make a measurement
A measurement process is started by pressing the "M" button. The
"Hold" symbol disappears during the measurement and the values
are updated. After releasing the "M" button, the "Hold" symbol is
displayed again and the last measured values remain unchanged.
The device is now in Standby mode. Press the "M" button again to
start a new measurement.
Approx. 5 minutes after releasing the measurement button, the
device switches off automatically to save battery power. When the
device is switched on again, the last measured value is shown on
the display.

Basic Functions
13
Hydromette® BL LG 17
2.3 Menu Guidance
Pressing the "Up" or "Down" button in standby
mode takes you to the main menu.
Use the "Up" button and the "Down" button
to navigate through the menu.
The selection of a menu item is performed by
pressing the measurement button.
The three dots at the top and bottom of the
screen indicate that further selection items are
available that are displayed when scrolling.
The following selection items are available for further selection:
1. Back ( ) to the measurement menu (standby mode): the
measurement process can be performed here
2. Settings: settings can be defined here (section 2.3.2)
3. Data Menu: the last 5 measured values, the minimum /
maximum values and the version can be retrieved here (sections
2.3.11 and 2.3.12)
4. Measurement Mode Display: the display of the measured
values can be defined here (sections 2-3.13 to 2.3.15)

Basic Functions
14
Hydromette®BL LG 17
2.3.1 Measurement Menu
The last measurement with the note "Hold" is shown here.
A new measurement can be started in this menu by pressing the
"M" button.
During the measuring process, the "Hold" symbol disappears from
the display. After releasing the "M" button, the measured value is
saved. The "Hold" symbol is displayed again.
If the current measured value of the air velocity is greater than the
stored maximum value, the “Max“ symbol flashes on the display.
The maximum value is automatically stored in the memory.
If the current measured value of the air velocity is smaller than the
stored minimum value, the “Min“ symbol flashes on the display.
The storage method corresponds to that of the maximum value.
2.3.2 Settings
The following settings can be made in this menu:
Area: selection option for circle with diameter specification or
rectangle with length and width specification
Averaging: for a calmer display in the case of highly
fluctuating flow, the display value can be averaged over
several values
Units: selection of the desired units of measurement
Language
Brightness
Limits: limit settings for alarm signals
C.Temp.: setting of the compensation temperature
C.Pressure: setting of the compensation pressure

Basic Functions
15
Hydromette® BL LG 17
2.3.3 Flow Rate
Main menu Settings ( ) Surface ( ) maximum value display
A diameter or two edge lengths of an air duct
can be entered for the calculation of the flow
rate. If the flow rate measurement is
deactivated in this menu (selection option
"none"), the air velocity is displayed again.
2.3.4 Averaging of the Display Value
Main menu Settings ( ) Averaging ( )
Averaging of up to five values can be set to
obtain a calmer display in the case of highly
fluctuating values.

Basic Functions
16
Hydromette®BL LG 17
2.3.5 Units Setting
Main menu Settings ( ) Units ( )
The units system can be changed from metric
("m/s") to Imperial ("ft/min") in this menu.
2.3.6 Languages Setting
Main menu Settings ( ) Language ( )
Language selection options:
German
English
Symbols

Basic Functions
17
Hydromette® BL LG 17
2.3.7 Brightness Setting
Main menu Settings ( ) Brightness ( )
The brightness of the display can be adjusted in
steps. It must be noted that the current
consumption increases with higher brightness
and thus the operating time reduces.
2.3.8 Alarms Limit Value
Main menu Settings ( ) Limits ( )
An alarm can be activated for an upper and/or
lower limit value in the "Limits" menu.

Basic Functions
18
Hydromette®BL LG 17
2.3.9 Compensation Temperature
Main menu Settings ( ) C.Temp. ( )
The factory setting of the compensation
temperature for the air velocity is 20 °C.
Under this menu item, the temperature setting
for the compensation of the air velocity can be
manually adapted to the actual local conditions.
2.3.10 Compensation Pressure
Main menu Settings ( ) C.Pressure ( )
A specific pressure can be entered manually
under the "Set" menu item in the
"Compensation Pressure" menu. The pressure
setting is shown at the top right in the
measurement mode.
Attention: the pressure sensor is in the display unit and not in the
air velocity sensor!

Basic Functions
19
Hydromette® BL LG 17
2.3.11 Minimum / Maximum Value Display
Main menu Data ( ) Min / Max ( )
The minimum and maximum measured air
velocity values of a measurement series are
displayed in this menu. The display of the
minimum value and maximum value is only
possible for the air velocity value.
The minimum value and maximum value can be
removed from the memory using the "Delete"
menu item.
2.3.12 Memory Menu
Main menu Data ( ) Memory ( )
The last 5 measured values are saved in this
menu. The display and the respective units
depend on the selected measurement mode.

Basic Functions
20
Hydromette®BL LG 17
2.3.13 Measurement Mode Display
Main menu Data ( ) Graph ( )
The air velocity is displayed either as graphs or
as bars. This allows the measured variable to
be recognised more quickly.
2.3.14 Graph Measurement Mode
Main menu Graph ( ) Start ( )
The uniformity of a flow can be seen very well
with the graphic display of the air velocity
measurement value. The graph measurement is
started and stopped by pressing the
measurement button.
The data recorded during the graph measurement are opened as
follows:
Main menu Graph ( ) Data ( )