Liquid detector AFA 11 with burner connection kit

  • Leak detection system class III, EN 13160-1/-4
  • Connections pre-wired
  • With visual/audible alarms, Test and Acknowledge buttons
  • Automatic switching off of the burner in alarm conditions
  • EnOcean®-ready


For visual and audible alarms if liquids with a flash point of > 55 °C are detected in, for example, oil storage rooms, drip pans, inspection ducts, ducts, protective pipes, manholes, pipes and cellars. Suitable for the following media: water, fuel oil, diesel fuel or low-viscosity lubricating oils, motor oils, hydraulic oils, vegetable oils and transformer oils, antifreeze agents, oil-water mixtures and emulsions. Use as leak detection system class III as per EN 13160-1/-4 and as leak detection system as per TRWS 791-1.


The oil/water alarm unit in a wall mounting housing triggers visual and audible alarms in the event of accumulations of liquids which can be caused by tank leaks, backflow, flooding, etc. ÖWWG 3 consists of a control unit with visual/audible alarm, Test and Acknowledge buttons as well as a flexible PTC thermistor probe. The probe is mounted at the lowest point of the area to be monitored. The alarm is triggered when the probe comes into contact with liquid. The audible alarm can be muted with the Acknowledge button. The visual alarm remains active until the leak has been removed. The Test button allows you to simulate an alarm condition in order to perform a function check. The self-monitoring probe triggers an alarm if it is damaged. The voltage-free relay contact is provided for connection of additional alarm equipment (such as additional alarm unit ZAG 01). ÖWWG 3 is suitable for panel mounting with a mounting frame. A sealing kit (IP 54) is available for rough application conditions. Alarm units with the EnOcean-ready label can be integrated into your existing building automation systems at a later point in time. To do so, plug the EnOcean wireless module into the EnOcean interface (PCB of the device). The AFRISO gateway in conjunction with additional AFRISO products with EnOcean wireless technology allow you to configure a whole range of fully customisable, extensible features for the protection of plants and buildings.

Technical specifications

Operating temperature range
Ambient: -5/+40 °C

L x Ø: 57 x 14 mm
Cable length: 3.2 m or 10 m

Supply voltage
AC 100–240 V or AC/DC 15–40 V

Nominal power
10 VA

Switching output
Relay contact: 1 voltage-free changeover contact

Alarm sound
Min. 70 dB (A)

Wall mounting housing made of impact-resistant plastic (ABS)
W x H x D: 100 x 188 x 65 mm
Degree of protection: IP 40 (EN 60529)

Approval for construction products
DIBt: Z-65.40-339, CE marking

Scope of delivery
Control unit
PTC thermistor probe
Part no. 44510/44488: 3.2 m
Part no. 44494: 10 m

EnOcean wireless module (can be retrofitted)
Burner connection kit