SFP120A250产品概述
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
Datasheet
