The Drumline WLS (Water Level Switch) is a EMC tested and CE marked solid state electronic unit that is designed to sense the presence or absence of water in a variety of pressure and temperature applications. The unit is predominately aimed at the power generation, petrochemical, refinery and manufacturing industries.

The Drumline WLS is based on the principles of conductivity and utilises conductivity probes as the sensing element. The DLWLS-1 is a single channel unit with all the features of the DLWLS-4, with the added benefit of a DPDT 8 amp relay.

The unit can be supplied as a bare PCB or in an IP66 rated, clear lid enclosure with cable glands.

OPERATION
The unit is set via a jumper to a normal operating state, either steam or water. When the unit senses that the probe is not in its normal state, the Alarm LED is illuminated.

LOCAL DISPLAY
As with all the DLWLS series electronic level switches. The local display is detachable. This means that it can be mounted remotely from the electronic unit, providing a more convenient visual indication. The display provides a green LED to indicate water, a red LED to indicate steam and a flashing amber LED to indicate that the probe is sensing a state different from the set default mode.

RELAY TIME DELAY
The relay has an adjustable time delay of 0-10 seconds. The delay occurs when a channel switches from normal operating state to alarm state, this helps combat spurious alarms due to water splatter etc. The delay time continually resets until the full time elapses without a change in state.

Relay is rated to 2 amps and are Double Pole Double Throw.

SENSITIVITY
The system can have the sensitivity set via DIP switches. Settings are available for 2 micro siemens and above, 1 micro siemens, 0.5 micro siemens, 0.3 micro siemens. There is also the ability for custom factory settings.

PROBE CONNECTION
The probe channel can use 2 or 4 wire connections, only 2 are required. 4 wires are used for extra redundancy.

PERIPHERAL CONNECTION
T5 is a peripheral connection, it is used to connection optional components that may be developed by Drumline, this includes remote display and remote relay boards.

 

 

Part Number	DLWLS-1
Mains Input	90VAC to 250VAC
Enclosure Material	Polycarbonate - 70 Deg C max operation
Number of channels	1
Dimensions	170mm x 140mm x 95mm