Liquid Level Controller

Q: What environmental conditions can the Model 407 withstand, and how does it handle power interruptions?

The Model 407 operates from -20¬∞ to +140¬∞ F with 0-97% humidity without condensation. It includes a power-fail contact that opens when AC power is connected and closes if power is lost.

407

The Model 407 Liquid Level Controller provides precise management for industrial fluid systems. It supports three-pump operation with selectable lead or automatic alternation, optimizing system efficiency and extending pump life. Integrated run-time meters track operational hours for proactive maintenance scheduling and performance analysis. Five distinct sensing levels allow for granular control over liquid volumes, preventing overflows or dry-run conditions. Alarm outputs enhance system monitoring by signaling critical conditions, ensuring operational safety. Hand-off-auto controls offer operational flexibility for manual override or automated processes. Constructed with a 20 gauge steel case, this controller is designed for durability and long-term service. Its 105-130VAC input voltage and 10A at 240VAC resistive contact rating ensure robust electrical performance. This unit facilitates reliable liquid level regulation in demanding applications, maintaining consistent process control.

Liquid Level Ctrl 3 Pump

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Specifications

Feature	Three pump operation
Feature	Three run-time meters
Feature	Selectable lead or automatic alternation
Feature	Five sensing levels
Feature	Alarm outputs
Feature	Hand-off-auto controls
Input voltage	105-130VAC
Input frequency	60Hz
Power consumption	10W
Contacts	SPST relay
Contact rating	10A at 240VAC resistive
Float Switch Potential	12VDC at 1mA
Transient protection	2500 V for 10ms
Operating temperature	-20° to +140° F
Display	to 99,999.9 non-resettable
Humidity tolerance	0-97% without condensation
Expected relay life (Mechanical)	10 million operations
Expected relay life (Electrical)	100,000 operations at rated load
Case material	20 gauge Steel
Termination	Removable terminal strip
Power-fail contact	A SPST, normally-closed internal power-fail contact opens when AC power 120VAC is connected to the controller, and closes if power is lost or removed
Warranty	This product is warranted to be free from defects in materials and workmanship for one year.

FAQs

How many pumps can the Model 407 Liquid Level Controller manage and what control options are available?

The Model 407 can manage three pumps. It offers selectable lead or automatic alternation and utilizes five sensing levels for precise control.

What are the electrical specifications and expected lifespan of the relay contacts for the Model 407?

The controller operates on 105-130VAC input voltage with a 10A at 240VAC resistive contact rating. Expected relay life is 10 million mechanical operations and 100,000 electrical operations at rated load.

What environmental conditions can the Model 407 withstand, and how does it handle power interruptions?

The Model 407 operates from -20° to +140° F with 0-97% humidity without condensation. It includes a power-fail contact that opens when AC power is connected and closes if power is lost.