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SINGLE & DUAL CHANNEL
SFP Series

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 fl uid 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. These products will automatically
reset when the fault condition clears.

Three output confi gurations are offered: an 8 pin SPDT single channel relay and
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 electroplating issues.

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Macromatic SFP024A100

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 4.7K - 100K Ohms 24V AC 8 Pin SPDT

Macromatic SFP024A100L

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 4.7K - 100K Ohms 24V AC 8 Pin SPDT w/ Low Profile Knob

Macromatic SFP024A250

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 10K - 250K Ohms 24V AC 8 Pin SPDT

Macromatic SFP024A250L

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 10K - 250K Ohms 24V AC 8 Pin SPDT w/ Low Profile Knob

Macromatic SFP024B100

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 4.7K - 100K Ohms 24V AC 11 Pin DPDT

Macromatic SFP024B100L

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 4.7K - 100K Ohms 24V AC 11 Pin DPDT w/ Low Profile Knob

Macromatic SFP024B250

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 10K - 250K Ohms 24V AC 11 Pin DPDT

Macromatic SFP024B250L

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 10K - 250K Ohms 24V AC 11 Pin DPDT w/ Low Profile Knob

Macromatic SFP024C025

PUMP SEAL FAILURE RELAYS DUAL CHANNEL Sensitivity Range: 10K - 25K Ohms 24V AC 8 Pin (2) SPNO DUAL CHANNEL

Macromatic SFP024C025L

PUMP SEAL FAILURE RELAYS DUAL CHANNEL Sensitivity Range: 10K - 25K Ohms 24V AC 8 Pin (2) SPNO DUAL CHANNEL w/ Low Profile Knob

Macromatic SFP024C100

PUMP SEAL FAILURE RELAYS DUAL CHANNEL Sensitivity Range: 4.7K - 100K Ohms 24V AC 8 Pin (2) SPNO DUAL CHANNEL

Macromatic SFP024C100L

PUMP SEAL FAILURE RELAYS DUAL CHANNEL Sensitivity Range: 4.7K - 100K Ohms 24V AC 8 Pin (2) SPNO DUAL CHANNEL w/ Low Profile Knob

Macromatic SFP024C250

PUMP SEAL FAILURE RELAYS DUAL CHANNEL Sensitivity Range: 10K - 250K Ohms 24V AC 8 Pin (2) SPNO DUAL CHANNEL

Macromatic SFP024C250L

PUMP SEAL FAILURE RELAYS DUAL CHANNEL Sensitivity Range: 10K - 250K Ohms 24V AC 8 Pin (2) SPNO DUAL CHANNEL w/ Low Profile Knob

Macromatic SFP024E100

PUMP SEAL FAILURE RELAYS

Macromatic SFP024E100L

PUMP SEAL FAILURE RELAYS

Macromatic SFP024E250

PUMP SEAL FAILURE RELAYS

Macromatic SFP024E250L

PUMP SEAL FAILURE RELAYS

Macromatic SFP120A100

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 4.7K - 100K Ohms 120V AC 8 Pin SPDT

Macromatic SFP120A100L

PUMP SEAL FAILURE RELAYS SINGLE CHANNEL Sensitivity Range: 4.7K - 100K Ohms 120V AC 8 Pin SPDT w/ Low Profile Knob


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