SFF Series

Inner Door Mounting

Single Channel

Single Channel

Dual Channel

Dual Channel

Dual Color LED w/Clear Status Indication

Dual Color LED w/Clear Status Indication

Features
  • Monitors Submersible Pump Seals for Leakage
  • Single or Dual Channel for Monitoring 1 or 2 Pumps
  • Two Adjustable Sensitivity Ranges
  • Full Status Indication on Top of Unit for Easy Troubleshooting
  • Low-Profile Adjustment Knob
  • 8 Pin Back-Mounted Socket Provided with Relay
Enclosure Style Flange-enclosure designed for deadfront door-mounting
Configuration/
Contact Rating
  • 8 Pin Single Channel: SPDT 10A @ 240V AC/7A @ 28V DC
  • 8 Pin Dual Channel: (2) SPNO 5A @ 240V AC/28V DC
Approvals c-ur-us.jpg       UL-socket.jpgUL File #E109466
Technical Documentation

Operation:

Two wires from the relay are connected to a resistance-sensing probe in the pump seal cavity and the grounded motor housing or across two probes to monitor for seal leakage using a low-voltage DC signal. If the seal starts to leak, contaminating fluid enters the seal cavity.  This lowers the resistance between the internal probe and the common connection.  When the resistance drops below the user-adjustable sensitivity set-point of the relay, the output relay energizes and the LED turns Red ON.  The relay output can be used to give an alarm indication of a leaking seal. 

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Single Channel

Single Channel

Dual Channel

Dual Channel

Dual Color LED w/Clear Status Indication

Dual Color LED w/Clear Status Indication

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