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Sumps, manholes, double-wall tanks; sealed trenches; drip panels; indoor water detection.


Versatile leak detection probe that can detect all conductive liquids that includes water, acid, bases and chemical solvents.

Features and benefits:

  • The stainless steel construction of the probe is designed to perform in highly corrosive environments.
  • The exclusive design of the PWS probe integrator eliminates the need for power at the probe level when connected to either the PAL-AT® or LiquidWatch® systems.
  • Durable.
  • High sensitivity.
  • Low maintenance.



Can be connected to a cable "sensing string" providing increased utilization of the PAL-AT capabilities. Each probe assembly includes a probe integrator with 60 ft (18 m) of jumper cable to connect to the sensing string, 20 ft (6 m) of lead wire to attach the probe to the probe integrator and a NEMA 4X junction box.

NOTE: A PWS probe cannot be installed on a sensing string connected to a PAL-AT ZBA Zener barrier assembly (in hazardous areas).


The PWS probe for Liquid-Watch includes a probe adapter and ½” NPT cord grip. Additional lead wire is used if necessary.

General information



Can detect all conductive liquids that includes water, acid, bases and chemical solvents; Durable; High sensitivity. Low maintenance.


Grade 316 stainless steel




38 x 16 mm x 6 m

Length x diameter. Cable length: 6 m.


Consult manufacturer

Uniclass 2015
Pr_75_50_48_67 Probe leak sensorsPrimary
Specification data - Probe leak sensors Enhanced data
Liquid to be detected

All conductive liquids

Water, acid, bases, chemicals etc.

Response time (maximum)

Manufacturer's standard.



Solid-state, stainless steel construction allows it to be used in corrosive environments and reset quickly after removal from a liquid.

Physical characteristics



Manufacturer's standard

Exposure limits

-40 to +80°C.

Mounting arrangement

Manufacturer's standard