Delta HLA - Groundwater is designed to detect high water levels within sump pump (submersible pump) chambers.

The Delta HLA is an independent high water level alarm with a clear display on the front fascia via LED, which acts as a warning system in the event of:

  • power failure to the Delta HLA

  • a high water level situation in the chamber/sump

  • a high water level situation is recorded

  • a service due

Key features

  • Robust and reliable high water level alarm

  • Detects changes in sump pump system

  • An internal battery ensures continuous protection in the event of mains power failure

  • Quick and simple installation

  • Includes a mini float switch and Delta Float Shroud

  • LED’s for visual status and warning

  • Mute and reset buttons

  • Three volt-free contacts for connection to external systems

  • Can be retrofitted

Technical specification

  • NBS Specification R18 (Clause 310) Pumping Stations and Pressure Pipelines

  • BS 8102:2022 Type C Drained Protection

  • The Low Voltage Directive, EN61010:2010.

  • The EMC Directive EN55014:2006, A1 and EN55014-2:2015

The Delta HLA offers a secondary line of protection in the event of mains power failure with a battery backup incorporated within the panel, ensuring continued protection.