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Water Leak Detector

The Automated Logic Water Leak Detector is designed to sense the presence of water and alert a central monitoring system of the potentially destructive situation. Upon water detection, the alarm relays change state, and a local red LED illuminates. The transmitter can be set for latching or non-latching alarm, and normally energized or normally deenergized operation.

Key Features
  • 5 Amp Relays @ 30VAC/DC
  • 24 VAC or VDC Power
  • NEMA 4 Enclosure
  • Detection Within 5 Seconds with Local LED Alarm Indication
  • Adjustable Detection Level with Bottom or Pan Edge Mounting
Part Number and Description
Part Number Description
NSB-LDT4-PS-BB-A Water leak detector transmitter w/ 2 SPDT 5A contacts with probe sensor built into the enclosure
NSB-LDT4-RR10-BB-A Water leak detector transmitter w/ 2 SPDT 5A contacts with remote spot sensor with 10 foot FEP cable
Specifications
Power: 24VAC/VDC +/- 10%
Wiring: Flex Connector or Liquid-Tight Fitting
Relays Up to 6 wires for Alarm Contacts
Transmitter 2 wires for Power
Mounting: Lays in the pan with industrial adhesive tape or attached to the pan edge with screws
Sensor: Standard Attached SS probe w/ adjustable depth screw from .063” to .84” (OR)
Remote Long Line Wire Sensor (Rope), Plenum Rated Detects 1/8”of water over the full length 10 length.
Detector Transmitter: Alarm Contacts: Two SPDT, 5A relay outputs*
Indication 1 Green Power LED, 1 Red Alarm LED
Reset Action If latching, local push button or power interrupt
Termination: Terminal strip, 12 to 24 AWG
Enclosure Ratings: Remote Sensor Submersible, with FEP plenum-rated, waterproof cable
Detector NEMA 4 Box
Ambient: Rope Sensor 32 to 167ºF (0 to 75ºC), 0 to 95%RH, Non-condensing
Attached -40 to 185ºF (-40 to 85ºC), 0 to 95%RH, Non-condensing
Materials: Sensor: Stainless Steel
Enclosure: Polycarbonate
Agency: RoHS, UL94V-0 , UV-rated in Enclosure
  • 5 Amp Relays @ 30VAC/DC
  • 24 VAC or VDC Power
  • NEMA 4 Enclosure
  • Detection Within 5 Seconds with Local LED Alarm Indication
  • Adjustable Detection Level with Bottom or Pan Edge Mounting
Part Number Description
NSB-LDT4-PS-BB-A Water leak detector transmitter w/ 2 SPDT 5A contacts with probe sensor built into the enclosure
NSB-LDT4-RR10-BB-A Water leak detector transmitter w/ 2 SPDT 5A contacts with remote spot sensor with 10 foot FEP cable
Power: 24VAC/VDC +/- 10%
Wiring: Flex Connector or Liquid-Tight Fitting
Relays Up to 6 wires for Alarm Contacts
Transmitter 2 wires for Power
Mounting: Lays in the pan with industrial adhesive tape or attached to the pan edge with screws
Sensor: Standard Attached SS probe w/ adjustable depth screw from .063” to .84” (OR)
Remote Long Line Wire Sensor (Rope), Plenum Rated Detects 1/8”of water over the full length 10 length.
Detector Transmitter: Alarm Contacts: Two SPDT, 5A relay outputs*
Indication 1 Green Power LED, 1 Red Alarm LED
Reset Action If latching, local push button or power interrupt
Termination: Terminal strip, 12 to 24 AWG
Enclosure Ratings: Remote Sensor Submersible, with FEP plenum-rated, waterproof cable
Detector NEMA 4 Box
Ambient: Rope Sensor 32 to 167ºF (0 to 75ºC), 0 to 95%RH, Non-condensing
Attached -40 to 185ºF (-40 to 85ºC), 0 to 95%RH, Non-condensing
Materials: Sensor: Stainless Steel
Enclosure: Polycarbonate
Agency: RoHS, UL94V-0 , UV-rated in Enclosure
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