Brugg LEAKGUARD BASIC User manual

BA 076344.020/01.21 CH
Operating instructions
2-channel district and local heating pipe
monitoring device

Page 2
Table of contents
Technical data ...................................................3
Ordering information..............................................3
General information ..............................................4
Proper use ......................................................4
Safety instructions ...............................................5
Installation ......................................................6
Mounting.....................................................6
Electrical connection...........................................6
Function/Commissioning ..........................................7
Display and control field ........................................7
Commissioning ...............................................8
LEAKGUARD BASIC factory settings ............................8
LEAKGUARD BASIC function....................................8
Meaning of LEDs ............................................8
Acknowledging alarm ........................................9
Deactivating measurement for service purposes ...................9
Reset to factory settings .....................................10
LEAKGUARD BASIC configuration ..............................10
Menu ....................................................10
Measurements menu item ....................................12
History menu item ..........................................14
Settings menu item .........................................16
Network setting menu item ...................................18
Reset to factory settings ......................................19
EU Declaration of Conformity .................................... 20
© 2021 BRUGG Rohrsystem AG. This operating manual may not be repro-
duced or made available to third parties, either in whole or in part, without spe-
cial permission from BRUGG Rohrsystem AG.
Important!
All safety instructions must be read and observed before commis-
sioning!

Page 3
2-channel district and local heating pipe monitoring device with pipe connection
monitoring system, display field and signal output via potential-free contacts
LEAKGUARD BASIC (maximum length of measuring section NiCr/Cu 3,000 m) Order no. 1088865
Ordering information
LEAKGUARD BASIC
Supply voltage 90 .. 250 V AC, 50 .. 60 Hz
Power consumption max. 5 W
Number of measurement channels 2 (e.g. for flow and return of a district heating line)
Insulation measuring range 0 .. 10 MΩ
Error: 3% from measured value ±10 kΩabsolute
Loop measuring range 0 .. 19.99 kΩ
Error: 3% from measured value ±0.02kΩabsolute
Measuring section Brandes # 3,000 m, Nordic # 3,000 m
Length calculation Yes, for NiCr
Measurement voltage Typ. 24 V DC
Display 1 LED bar display for “ISO measured value” per
measurement channel
1 LED signal for “Loop fault” per measurement channel
On-site operation 1 button each for “ISO alarm” and “Loop fault” acknowl-
edgement
1 Ethernet interface for device configuration, limit value set-
ting and measured value readout
Safety output contacts
1 potential-free changeover contact for:
“ISO alarm” and “Loop fault”
Max. switching voltage: 250 V AC, max. switching current: 1 A AC
Interfaces Ethernet 10/100 Mbit/s, temporary for configuration
Operating temperature -5 °C .. +40 °C
Permissible humidity 0 .. 50% at 40°C, 0 .. briefly 100% at 25°C
Housing protection class IP 54
Application area Indoors and protected outdoor installation according to DIN
VDE 0100 Section 737
Residential and commercial areas as well as for small
businesses
Housing measurements 146 x 111 x 238 mm (W x H x D)
Technical data

Page 4
General
These operating instructions are intended to make it easier to familiarise your-
self with the product. They contain important information on how to use the
product safely, properly and economically.
The operating instructions must be supplemented with instructions based on
existing national regulations for accident prevention and environmental protec-
tion.
The operating instructions must be read and followed by every
person who is entrusted with working with/on the device, e.g. dur-
ing installation, maintenance and troubleshooting.
In addition to the operating instructions and the binding accident prevention
regulations applicable in the country of use and at the place of use, the rec-
ognised technical regulations for safe and professional work must also be
observed.
Proper use
The LEAKGUARD BASIC district heating monitoring device is designed for
measuring insulation and loop resistance to detect leaks in pipe systems.
For configuration, the device can be connected to a PC (laptop) via the Ethernet
interface. Integration into a network in not permitted.
Any other use is considered improper. The manufacturer is not liable for any
damage resulting from this; the risk is borne solely by the user!

Page 5
Safety instructions
Important!
Safety instructions must be read and observed before
commissioning!
• The operating instructions must always be available at the place of
use of the product.
Accident prevention
Before assembling and disassembling the device and before
opening the device housing, disconnect all areas from voltage!
• Only use the device in a technically perfect condition, as well as for its
intended purpose, in a safety-conscious and risk-conscious manner
and in compliance with the operating instructions.
• Do not make any changes to the device.
• Assembly, maintenance and repair work may only be carried out by
trained staff.
• Only use original BRUGG spare parts.
CAUTION!
Observe handling instructions.
Electrostatically sensitive components.
CAUTION!
The installation location of the device should have an overall
lightning protection concept which considers the power supply as
well as data and telecommunication lines.
CAUTION!
Never apply external voltages to the test leads.

Page 6
Installation
Mounting
The LEAKGUARD BASIC is situated in a wall-mounted housing and is attached to
the wall with three screws. After assembly, the screw heads must be sealed with
the enclosed rubber seals.
Detailed assembly and installation instructions can be found in the separately
enclosed installation instructions of the housing manufacturer.
Electrical connection
Accident prevention
It is absolutely essential to switch off the operating voltage
before working on the measurement device!
The LEAKGUARD BASIC is pre-assembled with power cable and plug and ready for
connection.
CAUTION!
Both pipe connection clamps X3.3 and X4.3 must be connected to
a pipe at two separate points, or one clamp must be connected to
the flow pipe and one clamp to the return pipe.
Terminal assignment
X1.1 bis X1.3
ISO safety output contact
X2.1 to X2.3
Loop safety output contact
X3.1 to X3.3
Measurement loop channel 1
(a, b, pipe connection 1)
X4.1 to X4.3
Measurement loop channel 2
(a, b, pipe connection 2)
X5.1
N (neutral conductor)
X5.2
L (phase)
X6
RS232 interface (option)
X7
Ethernet interface
Loop
contact
Channel 1 Channel 2 ISO
contact
ISO
relay
Loop
relay

Page 7
Function/Commissioning
The LEAKGUARD BASIC is a measurement and monitoring device for insulation
and loop resistance for detecting leaks in pipe systems and interruptions of the
measurement loop.
Each device can cyclically monitor two measurement loops, e.g. the flow and
return of a district heating pipe. When exceeding or falling below the freely
adjustable resistance limit values, the red alarm LEDs are activated and the cor-
responding alarm relay is triggered for remote alarm.
The LEAKGUARD BASIC is equipped with a pipe connection monitoring system
to detect an interruption of the pipe connection (earth).
The limit values for insulation and loop resistance are freely programmable via the
Ethernet interface using a laptop or netbook. All settings are stored in an internal
EEPROM memory so they are protected from loss.
The LEAKGUARD BASIC can be temporarily deactivated for certain service
work on the pipelines.
Display and control field
In the LEAKGUARD BASIC display and control field, you can
• Read off the values of the two insulation resistance measurement channels
via the ISO bar display LEDs
• Read off the alarm states of the two insulation resistance measurement
channels and interruptions of the pipe connection via the ISO “error” LEDs
• Read the alarm states of the two loop resistance measurement channels via
the Loop “error” LEDs
• Acknowledge alarm messages of the measurement channels
• Process limit values with a laptop or notebook via the Ethernet interface
Loop acknowledgement
ISO acknowledgement
Ethernet interface
ISO bar display LED
Loop “error” LED
ISO “error” LED

Page 8
Commissioning
After switching on the supply voltage, the LEAKGUARD BASIC is initialised and
runs a self-test.
All LEDs light up, then the LEDs of the bar displays go out from top to bottom.
The LEAKGUARD BASIC automatically starts continuous measurements.
The first measurement results are displayed after about 30 seconds.
If the LEAKGUARD BASIC can be operated with the factory settings, commis-
sioning is complete.
LEAKGUARD BASIC factory settings
• Insulation resistance limit values (ISO): Alarm signal when undershooting 0,5
MΩ
• Loop resistance limit values (Loop): Alarm signal when exceeding 12 kΩ
• Measured value averaging: None
• Alarm relay: Close, relay triggers with alarm
• Alarm relay trigger delay: None
LEAKGUARD BASIC function
The LEAKGUARD BASIC measurement device works independently and must
only be operated if there is an alarm.
It continuously measures the pipe connection resistance, the insulation resist-
ance, then the loop resistance of measurement channel 1, then the same for
measurement channel 2. An entire measurement cycle is completed in less than
1 minute.
Meaning of LEDs
1. The “ISO 1” and “ISO 2” LEDs
show the range of the current
measured values:
> 0.1 | > 0.3 | >1 | > 3 MΩ.
2. The “ISO 1” and “ISO 2” error LEDs
change from green to red when the
defined limit value is undercut.
They flash alternately if
the pipe connection is interrupted.
The “ISO” alarm relay changes
its switching state to trigger the remote alarm.
3. The “LOOP 1” and “LOOP 2” error LEDs change from green to red when
the measurement loop has been interrupted and the defined limit value has
been exceeded.
The “LOOP” alarm relay changes its switching state to trigger the remote
alarm.
Loop acknowledgement
ISO acknowledgement
Ethernet interface
ISO bar display LED
Loop “error” LED
ISO “error” LED

Page 9
Alarm acknowledgement
To cancel remote alarms although a
measured value is still in an alarm state,
alarms can be acknowledged in the
device.
To do so, press the acknowledgement
button located to the right of the red LED.
The alarm relay changes its switch status
back to the idle state. The red error LED
flashes.
The alarm acknowledgement can be can-
celled by pressing the acknowledgement
button again.
One acknowledgement button is responsible for both measurement channels.
The remote alarm becomes active
• When the measured value has been within the permissible range in the
meantime and then again moves outside it
• When the measured values of the other measurement channel are outside
the permissible range
A fault message from the pipe connection monitoring system cannot be
acknowledged as it is so serious that it must be rectified immediately.
Deactivating measurement for service purposes
If the measurements are to be deactivated for service purposes, one of the
acknowledgement buttons must be pressed for at least 5 seconds. The two
green ISO “error” LEDs flash.
Test leads a and b are then bridged internally with 10 Ω. A loop or insulation
measurement can be performed from the end of the cable.
At the same time, a timer starts, which automatically reactivates the module
after 12 hours.
Pressing and holding the same acknowledgement button again for at least
5 seconds reactivates the measurement.
Note:
When the measurement channel is deactivated, the measurement input is
bridged with low-impedance so that the measurement loop can be measured
manually at any point with "normal measurement voltage" (max. 100 V DC /
70 V AC).
Loop acknowledgement
ISO acknowledgement
Ethernet interface
ISO bar display LED
Loop “error” LED
ISO “error” LED

Page 10
Reset to factory settings
Reset to factory settings is necessary in particular if the network configuration
of the LEAKGUARD BASIC has been changed in such a way that access to
the configuration via the Ethernet interface (see page 10) is no longer possible.
Disconnect the network connection for this purpose!
Pressing both acknowledgement buttons simultaneously for 20 seconds until all
LEDs light up briefly (see Commissioning, page 8) performs the reset.
CAUTION!
This process is irreversible.
LEAKGUARD BASIC configuration
To change the factory setting or to adjust the parameters later, a network-capable
computer (laptop, notebook, netbook) with an Internet browser must be connect-
ed to the LEAKGUARD BASIC via the Ethernet interface.
Integration into a network in not permitted.
DHCP should be enabled in the network settings of the laptop used for easy
access. Otherwise, the IP address of the laptop must start with 192.168.
Entering the URL "192.168.0.2" into the
address line of the browser window calls up
the LEAKGUARD BASIC start page.
If this address cannot be called up, a reset
of the LEAKGUARD BASIC can help (see page 10).
The Overview start page appears.
Menu
The following menu appears in the left menu bar:
• Overview General information on the LEAKGUARD BASIC.
• Measurements Display of the measured values for both
measurement channels
Display of the relay states
Manual measured value storage
Circuit diagram for pin connection
• History Table of the daily and manually stored measured values
Graphic measured value progression curve
• Settings Configuration of limit values and relay states
Deactivation of a measurement channel
Display of the software version with revision status
• Network settings Configuration for network settings, access is
password-protected