Macromatic SFP120A250 Industrial Automation Industrial Relays

Seal Leak Relay Single Channel 1K-250K Ohms 120VAC 10A SPDT

Features

• Family: SF
• Function/Configuration: Single Channel 8 Pin SPDT
• Input Voltage: 120VAC
• Enclosure Style: Plug-in
• Sensitivity Range: 1K to 250KΩ
• Function: SINGLE CHANNEL
• Function Name: SF-Single
• Timing: Sensitivity Range: 1K - 250K Ohms
• Input: 120V AC
• Output: 10A SPDT
• Voltage Tolerance: AC Operation: +10/-15% of nominal at 50/60 Hz.
• Insulation Voltage: 2,000 volts
• Probe Voltage: 5V DC Pulsed
• Load Burden: 3 VA
• Output Contacts: 10A @ 240V AC/7A @ 28V DC, 1/4HP @ 120V AC (N.O.)
• Life: Mechanical: 10000000 operations; Full Load: 100000 operations
• Temperature: -28° to 65°C (-18° to 149°F)
• Response Times: Pick-up & Drop-out: 1 Second

Overview

Two wires from the relay are connected to a resistance-sensing probe in the pump seal cavity and the grounded motor housing or across two probes to monitor for seal leakage using a low-voltage DC signal. 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.