SFP Series

SFP024B100

Lead Time: 7 Days

$128.97 (USD) / EACH

Description Of Function

SF Series Pump Seal Failure Relays are designed to monitor the shaft seals of submersible pumps. A resistive-measuring probe is installed in the pump seal cavity. With input voltage applied, the LED is Green ON. If the seal starts to leak, contaminating fluid enters the seal cavity, which lowers the resistance between the internal probe & the common connection. When the resistance drops below the user-adjustable sensitivity set-point of the relay, the output relay energizes & the LED turns Red ON. The relay output can be used to give an alarm indication of a leaking seal. These products will automatically reset when the fault condition clears. Probes are pulsed with a DC voltage to prevent electroplating.

Function Chart

function chart

Product Overview

Features
  • Monitors Submersible Pump Seals for Leakage
  • Full Status Indication on Top of Unit for Easy Troubleshooting
  • Low-Profile Adjustment Knob
Enclosure Style

Plug-in case utilizing industry-standard 8 & 11 pin octal sockets

Configuration / Contact Rating

The SFP Series offers three configurations:

  • 8 Pin Single Channel: SPDT 10A @ 240V AC/7A @ 28V DC
  • 11 Pin Single Channel: DPDT 7A @ 240V AC/28V DC
  • 8 Pin Dual Channel: (2) SPNO 5A @ 240V AC/28V DC
Application Information
  • Voltage Tolerance: AC Operation: +10/-15% of nominal at 50/60 Hz.
  • Load (Burden): 3 VA
  • Indicator LEDs: Green ON with input voltage applied; Red ON when seal leak detected & relay is energized.
  • Probe Voltage: 5V DC Pulsed
  • Response Time: Pick-up & Drop-out: 1 Second
  • Life: Mechanical: 10,000,000 operations; Full Load: 100,000 operations
  • Temperature: -28° to 65° C (-18° to 149° F)
Approvals

Operation

A resistive-measuring probe is installed in the pump seal cavity. If the seal starts to leak, contaminating fluid enters the seal cavity. This lowers the resistance between the internal probe & the common connection. When the resistance drops below the user-adjustable sensitivity set-point of the relay, the output relay energizes & the LED turns Red ON. The relay output can be used to give an alarm indication of a leaking seal. These products will automatically reset when the fault condition clears.

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