Macromatic SFP Series - Pump Seal Failure Relays - Single and Dual Channel

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Macromatic SFP Series - Pump Seal Failure Relays - Single and Dual Channel (Plug-In)     SFP 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. 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. Three output configurations are offered: an 8 pin SPDT single channel relay & an 11 pin DPDT single channel relay to monitor a single pump, and an 8 pin dual channel relay (with 2 SPNO contacts) to monitor two pumps. Probes are pulsed with a DC voltage to prevent potential electroplating issues.     Features: Monitors Submersible Pump Seals for Leakage Single or Dual Channel for Monitoring 1 or 2 Pumps Two Adjustable Sensitivity Ranges Probe is Pulsed with a DC Voltage to Prevent Electroplating Low-Profile Adjustment Knob Uses industry-standard 8 & 11 pin octal sockets   Click here for specifications and dimensions in .pdf format  Part Number Configuration Input Voltage Sensitivity Range Wiring Socket  SFP120A025 Single Channel 8-Pin SPDT 120V AC 10K to 25KΩ  SFP120A100 4.7K to 100KΩ  SFP120A250 10K to 250KΩ  SFP240A025 240V AC 10K to 25KΩ  SFP240A100 4.7K to 100KΩ  SFP240A250 10K to 250KΩ  SFP120B025 Single Channel 11-Pin DPDT 120V AC 10K to 25KΩ  SFP120B100 4.7K to 100KΩ  SFP120B250 10K to 250KΩ  SFP240B025 240V AC 10K to 25KΩ  SFP240B100 4.7K to 100KΩ  SFP240B250 10K to 250KΩ  SFP120C025 Dual Channel 8-Pin (2) SPNO 120V AC 10K to 25KΩ  SFP120C100 4.7K to 100KΩ  SFP120C250 10K to 250KΩ  SFP240C025 240V AC 10K to 25KΩ  SFP240C100 4.7K to 100KΩ  SFP240C250 10K to 250KΩ Voltage Tolerances: AC Operation: +10/-15% of nominal at 50/60 Hz. Load (Burden): 3 VA Probe Voltage: 5V DC Pulsed Response Time: Pick-up: 1 Second Drop-out: 1 Second LED Indicator: Green ON with input voltage applied; Red ON when seal leak detected and relay energized Temperature: -28° to 65°C (-18° to 149°F) Output Contacts: Single Channel Relays: 10A @ 240V AC / 7A @ 30V DC, 1/4HP @ 120V AC Dual Channel Relays: (2) 5A @ 240V AC / 5A @ 30V DC, 1/4HP @ 120V AC Life: Mechanical: 10,000,000 operations, Full Load: 100,000 operations Mounting: Requires Industry-Standard 8 Pin Octal Socket (Macromatic  70169-D or equivalent) or 11 Pin Octal Socket (Macromatic  70170-D or equivalent) Typical Installations - 3 Switch 3 Pump

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