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Control and Monitoring : Analog Control

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Analog Control Overview

Simplex Fuel Systems - Control and Monitoring - Analog Control

The Simplex analog level controller is a UL 508A Listed relay based, float switch activated, multifunction liquid level controller. It can be supplied for tank construction in a number of installation configurations.

The controller is activated by level point sensing float switches. The controller may be supplied with an optional float switch-level transmitter assembly designed to the specific tank dimensions. The standard level transmitter is suitable for use with class-II flammable liquids or water.

Analog Control Features

UL508 listed.

Type 1, Type 3 or Type 4X enclosure.

Usable with any tank construction.

Versatile mounting.

Accessories to suit a multitude of tank level applications.

Leak detection capability.

Applications include: Single fill pump control; Duplex fill pump control, level switch activated; Duplex fill pump control, pressure switch activated; Single drain pump control; Duplex drain pump control; Pump-in, pump-out control.

The standard level transmitter is suitable for use with class-II flammable liquids or water.

Intrinsically safe transmitters for use with Class I liquids and alloy or plastic materials for use with corrosive liquids are available.

Analog Control Specifications

Listing	UL 508A
Enclosure	Type 1, Type 3 or Type 4X
Applications	Single Pump Tank Fill Duplex Pump Tank Fill, Automatic alternating lag pump back-up Single Pump Tank Drain Duplex Pump Tank Drain, Automatic alternating lag pump back-up Duplex Pump Tank Drain, Pump 1 Fill and Pump 2 Safety Drain Duplex Pump Tank Fill, Automatic alternating pressure/flowswitch control
Transmitter	Suitable for use with: Class-II flammable liquids or water (standard) Intrinsically safe transmitters for use with Class I liquids (optional) Alloy or plastic materials for use with corrosive liquids (optional) Mounting configurations: 3.5" NPT 4.0" NPT Gasketed plate Typical arrangement: User may specify all control and alarm level points A 2 HP pump control power relay is provided, plus output contacts for high and low level alarms Note: The controller can also accept float switch/point level sensing contact closures from other, buyer supplied devices such as leak sensors, pressure switches or other sensors.

Analog Control Options

Option	Description
191	Leak sensor, input, alarm, alarm relay
260	Main power input disconnect switch
261A	Single-phase main power input circuit breaker
261B	3-phase main power input circuit breaker
262	Control power transformer
298	System off remote alarm relay
299	Auxiliary control relay
333	Low-low level alarm, sensor, input, alarm relay
334	Audible alarm horn
346	Pump running time meter
347	Manual duplex pump controller
212	Digital level indicator
214	Digital flow gauge, flow totalizer
768	Single-phase motor starter
770	3-phase motor starter

Note: We are experts at building products that meet our customer's exact requirements. Contact Simplex if your job specifications require additional options or considerations.