SFP120A250 - 

Macromatic’s 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 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.

Features:

Single Channel

Sensitivity Range: 1K-250K Ohms

120VAC

Monitors submersible pump for leakage

Two adjustable sensitivity ranges

Probe is pulsed with a DC voltage to prevent electroplating

Low-profile adjustment knob

Uses industry-standard 8 pin octal socket

Pilot Duty Rating

Specifications

10A @ 240VAC/7A @ 28VDC, 1⁄4 HP @ 120VAC (N.O.)

Temperature: –28°C to 65°C

Dimensions: 3.0" D × 1.7" W × 2.4" H