Product Description
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| Product Information | Resources |
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RoHS Compliant| Specifications |
| Product Attribute | Attribute Value |
| Number of Channels | Dual Channel |
| Control Voltage | 120 VAC |
| Sensitivity Range | 1K to 250KΩ |
| Mounting | 8 Pin Plug-in Round |
| Contact Configuration | 2x1A 2xSPST-NO |
| Voltage Tolerance | 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 |
| Operating Temperature | -28o to 65oC (-18o to 149oF) |
| Storage Temperature | -40o to 85oC (-40o to 185oF) |
| Output Contacts | (2) 5A @ 240V AC / 5A @ 28V DC, 1/4HP @ 120V AC (N.O.) |
| Life | Mechanical: 10,000,000 operations Full Load: 100,000 operations |
| Series Features |
| SEAL LEAKAGE Single & Dual Channel | SFP Series |
| Series Description: SFP Series Seal Leakage Relays are designed to monitor the shaft seals of submersible pumps for leakage. LED status indication and low-profile sensitivity knob are on top for easy setup and troubleshooting. These products utilize a plug-in enclosure for panel or DIN-rail mounting with a socket. Three output configurations 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. |
| Operation: Operation: 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. |
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