Conductivity Switch - Model 352

Robertshaw
Conductivity Switch - Model 352
The Model 352 is a conductivity sensing ON-OFF control unit that is completely self-contained and enclosed in weathertight and explosion proof housing. Designed to be mounted directly on the sensing probe or electrode, it may be used to detect conductive liquid levels or interface between non-conductive and conductive liquids. The sensing electrode, or probe, must be of the bare, non-insulated style.
The Model 352 is a conductivity sensing ON-OFF control unit that is completely self-contained and enclosed in weathertight and explosion proof housing. Designed to be mounted directly on the sensing probe or electrode, it may be used to detect conductive liquid levels or interface between non-conductive and conductive liquids. The sensing electrode, or probe, must be of the bare, non-insulated style. Less Detail

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Features

Low AC voltage on electrode means no safety hazard to personnel

Field changeable fail-safe mode for operation on low level or high level application

Completely self-contained. Mounts directly on sensing probe, no additional equipment required. Probe ordered separately.

Wide adjustment range allows operation on even partially conductive materials

Plug-in Control Relay

Specification Quickview
SPECIFICATIONS
Supply voltage 120 VAC ±10%, 50/60 Hz 240 VAC ± 10%, 50/60 Hz
Supply power 5 watts, 15 VA maximum
Control Relay:
Form DPDT, electromechanical
Rating 5 a @ 120/240 VAC, electromechanical
Enclosure Weather tight NEMA 4 and Explosion Proof Class 1, Division 1, Group C & D
Operating temperature limits -40°F to +160°F
Vibration limits ±2 g's, 20-200 Hz
Humidity 0-95 RH@ 100°F
Shock 75 g's for 11 ms without permanent damage
Weight 4 lbs
Resistance operating range 200 ohms to 2.0 megohms
Deadband 5% maximum
Temperature coefficient 0.05%/l00°F
Supply coefficient 2%/10% supply change
Manufacturer's Documents

Manufacturers Documents

Data Sheet
Ordering Information
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