Leakguard Basic

LEAKGUARD Basic monitoring device for local and district heating

The LEAKGUARD Basic device series from BRUGG Pipes is the compact and cost-effective monitoring solution for district heating and cooling pipes with a monitoring wire pair in the insulation.

The devices are simple to install and easy to operate. Alarm signals (lamps, sirens, etc.) can be controlled via integrated output contacts. LEAKGUARD Basic monitors the flow and return of a district heating pipe on 2 channels in parallel. For this purpose, it permanently measures the insulation and loop resistance of a pair of wires in the insulation of your pipe system according to EN 14419.

In the event of leaks in the pipe, interruption of the measuring loop or the pipe connections, it immediately sounds the alarm and thus helps to prevent major damage and losses. The insulation and loop resistance alarms can be acknowledged via device keys. The configuration, input of limit values for the loop resistance and the insulation resistance as well as the readout of the measured values can be carried out on site with a laptop using a web browser via the Ethernet interface. No additional operator software is necessary.

We look forward to your request.


Technical data:

Supply voltage

90...250 V AC, 50...60Hz

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 kΩ absolute

Loop measuring range

0 .. 19,99 kΩ
Error: 3% from measured value ±0.02 kΩ absolute

Measuring section

For CH, Brandes # 3,000 m, Nordic # 3,000 m
For rest of the world, Brandes # 1,500 m, Nordic # 3,000 m

Length calculation

yes, for NiCr

Measuring voltage

type 24 V DC


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” acknowledgement
1 Ethernet interface for device configuration,
limit value setting and measured value readout

Signal 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


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 dimensions

146 x 111 x 238 mm (W x D x H)