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Marsh Bellofram Diversified Electronics Division SPM Series Dual Channel Seal Failure Alarm

Marsh Bellofram Diversified Electronics Division SPM Series Dual Channel Seal Failure Alarm

Product catalog summary

Overview: The ATC Diversified Electronics SPM Series is a dual seal failure module designed to monitor the shaft seals of two submersible pump motors. It detects leaks by sensing the conductivity of contaminating fluid through probes in the seal cavity. Upon detecting a leak, it activates an SPST output relay to indicate the need for seal replacement.

Specifications:

Control Voltage: 120 VAC, 50/60 Hz
Probe Voltage: 9 VDC
Isolation: 2500 Volts
Power Required: 2 VA
Duty Cycle: Continuous
Sensitivity: Adjustable from 10K Ω to 25K Ω and 4.7K Ω to 100K Ω ±10%
Contact Rating: (2) SPST-N.O., 5 A @ 120 VAC Resistive, 345 VA Inductive
Life Expectancy: Mechanical - 20 Million Operations; Electrical - 50,000 Operations @ Rated Load
Indicators: Red LED illuminates when a leak is detected
Temperature Rating: Operate -4° to 131°F (-20° to +55°C); Storage -40° to 185°F (-40° to +85°C)
Enclosure: 8-Pin plug-in “A” style
Weight: 8 oz.
Model Number: SPM 120 ABA

Operation: The module activates the corresponding output relay and LED when the resistance between a probe input and the common connection falls below the sensitivity setting.

Catalog excerpts

Marsh Bellofram Diversified Electronics Division SPM Series Dual Channel Seal Failure Alarm-1

SPM Series Diversified Electronics atcdiversified.com 800.727.5646 274Special Controls // SPM Series The ATC Diversified Electronics SPM Series dual seal failure module is a specialized control for monitoring the shaft seals of two submersible pump motors. Leaks are detected by sensing the conductivity of the contaminating fluid through probes installed in the seal cavity. When a seal begins to leak, the seal failure module energizes one of its SPST output relays indicating that the seal needs to be replaced before the motor is damaged. The sensitivity of the probe inputs is field adjustable. When the resistance between one of the probe inputs and the common connection drops below the sensitivity setting, the corresponding output relay and LED are activated. D u a l C h a n n el S e a l F a i lu r e Al a rm RB-08/PF083A \\\OPERATION \\\DIMENSIONS (INCHES) \\\SPECIFICATIONS CONTROL VOLTAGE 120 VAC, 50/60 Hz PROBE VOLTAGE 9 VDC ISOLATION 2500 Volts POWER REQUIRED 2 VA DUTY CYCLE Continuous SENSITIVITY 10K ½ to 25K ½ ±10% Adjustable 4.7K ½ to 100K ½ ±10% Adjustable CONTACT RATING (2) SPST-N.O., 5 A @ 120 VAC Resistive, 345 VA Inductive LIFE EXPECTANCY Mechanical 20 Million Operations Electrical 50,000 Operations @ Rated Load INDICATORS Red LED illuminates when leak is detected TEMPERATURE RATING Operate -4° to 131°F (-20° to +55°C) Storage -40° to 185°F (-40° to +85°C) ENCLOSURE 8-Pin plug-in “A” style enclosure WEIGHT 8 oz. MODEL NUMBER >>>>>> SPM 120 ABA Sensitivity 10K ½ to 25K ½ ±10% Adjustable 25K 4.7K ½ to 100K ½ ±10% Adjustable 100K \\\WIRING

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