Marsh Bellofram Diversified Electronics Division SPM-120-AEE Series Submersible Pump Monitor

Product catalog summary

Overview: The ATC Diversified Submersible Pump Monitor is designed to monitor the shaft seal and stator temperature of submersible pump motors. It detects seal leakage using a resistive float switch or conductive probes and over-temperature through a normally-closed-low temperature switch on the stator. The system includes a bistable relay for power failure resilience.

Specifications:

Supply Voltage: 120 VAC, 50/60 Hz
Sensor Voltage: 12 VDC
Power Required: 4 VA
Duty Cycle: Continuous
Sensitivity: Leakage adjustable from 1k Ω to 35 k Ω; Over-Temperature Open Circuit
Contact Rating: (2) SPDT, 10 A @ 120 VAC Resistive
Life Expectancy: Mechanical 10 Million Operations; Electrical 100,000 Operations @ Rated Load
Indicators: Green LED for normal, Red LED for leak or over-temperature
Temperature Rating: Operate -4° to 131°F (-20° to +55°C); Storage -40° to 185°F (-40° to +85°C)
Response Times: Leakage Trip 1 SEC, Leakage Reset 1 SEC, Temperature Trip 0.1 SEC
Terminations: (12) #8-32 Screw Terminals
Enclosure: Style “E” Lexan® Surface Mounted
Weight: 17 oz.

Ordering Information: Model SPM-120-AEE is a Dual Function Alarm/Relay.

Wiring:

Figure 1: Shows connections for Flygt model FLS float switch. Adjust leakage sensitivity to 1 k for float switch applications.
Figure 2: For conductive probes, use a 100 k resistor and set sensitivity to the desired value.

Operation: The relay outputs are determined by the resistance of the leakage and temperature sensors. Under normal conditions, both output relays are de-energized. If the temperature switch opens, the over-temperature relay latches on until reset. The leakage relay energizes if sensor resistance drops below the sensitivity setting and resets automatically when the condition clears.

Catalog excerpts

Marsh Bellofram Diversified Electronics Division SPM-120-AEE Series Submersible Pump Monitor-1

SPM Series Diversified Electronics atcdiversified.com 800.727.5646 276Special Controls // SPM Series The ATC Diversified Submersible Pump Monitor is a specialized control for monitoring the shaft seal and stator temperature of a submersible pump motor. Seal leakage is detected by either a resistive float switch or a pair of conductive probes installed in the seal cavity. Over-temperature is detected by a normally-closed-low temperature switch mounted on the stator. The over-temperature function incorporates a bistable relay that retains its position during power failures. S u b m e r s i b l e Pu m p Mon i t or \\\SPECIFICATIONS \\\DIMENSIONS (INCHES) SUPPLY VOLTAGE 120 VAC, 50/60 Hz SENSOR VOLTAGE 12 VDC POWER REQUIRED 4 VA DUTY CYCLE Continuous SENSITIVITY Leakage 1k ½ to 35 k ½ adjustable Over- Temperature Open Circuit CONTACT RATING (2) SPDT, 10 A @ 120 VAC Resistive LIFE EXPECTANCY Mechanical 10 Million Operations Electrical 100,000 Operations @ Rated Load INDICATORS Green LED illuminates under normal conditions Red LED illuminates when leak is detected Red LED illuminates on over-temperature TEMPERATURE RATING Operate -4° to 131°F (-20° to +55°C) Storage -40° to 185°F (-40° to +85°C) RESPONSE TIMES Leakage Trip 1 SEC Leakage Reset 1 SEC Temperature Trip 0.1 SEC TERMINATIONS (12) #8-32 Screw Terminals ENCLOSURE Style “E” Lexan® Surface Mounted WEIGHT 17 oz. \\\ORDERING INFORMATION MODEL NUMBER DESCRIPTION SPM-120-AEE Dual Function Alarm/Relay

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Marsh Bellofram Diversified Electronics Division SPM-120-AEE Series Submersible Pump Monitor-2

800.727.5646 atcdiversified.com Diversified Electronics SPM Series Special Controls // SPM Series 277 \\\WIRING Fig. 1 FLS Connection Figure 1 shows the connections for use with a Flygt model FLS float switch. The leakage sensitivity must be adjusted to 1 k for float switch applications. If a pair of conductive probes is used to sense seal leakage, a 100 k resistor is required as shown in Figure 2, and the sensitivity should be set to the desired value. The states of the unit’s relay outputs are determined by the series combination resistance of the leakage and temperature sensors. Under normal...

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