Water Detectors
WD100 Series



The WD100 is a microchip-based device that uses gold-plated sensing probes to detect the presence of water or other conductive liquid. The WD100 is powered by an AC or DC source, 14 - 30 volts. It features normally open and normally closed (form C) relay contacts rated at 5A @ 120 VAC/30 VDC for connection to a monitoring system, or direct control of another device. The mounting legs will allow a sensing height adjustment from 0" to 1/2". The WD100 is designed to signal an alarm if one or more of the three conditions are met: water is detected, power is lost to the unit, or if there is an internal failure. The WD100 provides the highest level of water detection confidence.






     The WD-100-xx Series c/w the specified length of conductivity cable (shown above). See ordering information for available lengths.
     The WD-102 operates on the same principle as the WD-100, however, it comes with a 5 foot remote probe. For custom lead lengths, please contact Greystone.


The following chart gives examples of what types of fluids the WD100 can and can not be used to detect.

Fluids that can be detected Fluids that can not be detected
City water Pure water
Sea water Gasoline
Copper sulfate solution Oil
Weak acid Brake fluid
Weak base Alcohol
Household ammonia Ethylene glycol
Water & glycol mixture Paraffin
Wet soil Dry soil
Coffee Whiskey



Power supply: 14 - 30 VAC/DC
Supply Current: 60mA max @ 24VDC, (no water)
Operating Temperature: -40° C - 85° C (-40° F - 185° F)
Enclosure Dimension (LxWxH):
(mounting legs@ max/min height)
127 x 127 x 102 mm
5-3/8" x 5-3/8" x 4" (max)
127 x 127 x 89 mm
5-3/8" x 5-3/8" x 3-1/2;" (min)
Alarm Output: Form C relay, rated @ 5 amps
@ 120 VAC/30 VDC
(resistive load)

OTHER FEATURES
  • Fail-safe circuitry
  • Reverse acting contacts
  • Reverse voltage protection
  • RFI/EMI noise immunity

  • WD-100 - Stand Alone
    WD-102 - 5' Remote Probe
    WD-100-5 - c/w 5' conductivity cable
    WD-100-10 - c/w 10' conductivity cable
    WD-100-25 - c/w 25' conductivity cable
    WD-100-50 - c/w 50' conductivity cable
    WD-100-100 - c/w 100' conductivity cable


    HomeCompanyProductsISO 9000Client CenterContact UsLocationsStandardsSite Map
    Copyright © Greystone Energy Systems Inc. 2003

    Privacy Statement