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Preferred Instruments

Preferred Instruments manufactures microprocessor based controllers, instruments, and electric actuators for combustion and process applications. Preferred Instruments also manufactures oil tank gauging and leak detection equipment. A major component of the Instrument group sales is from control systems integration and personal computer based Supervisory Control and Data Acquisition systems. Preferred Utilities' industrial factory is located in Danbury, CT

Shaft Position Sensor

The Shaft Position Sensor (SPS) is a general purpose feedback pot for actuator in applications such as firing rate feedback and fuel/air FGR.

Features

  • 0 – 100 % Boiler Firing Rate Signal
  • Sensor Used By Oxygen Trim, Furnace Draft or Other Controls That Require a Boiler Load Index
  • 45 To 160 Degree Stroke Input Allows Installation Flexibility

Overview

The Shaft Position Sensor (SPS) is a general purpose feedback pot for applications that require firing rate feedback as a basis for establishing setpoints for other control loops such as Oxygen Trim or FGR Flow.

Specifications

Stroke: 45 to 160 Degrees

Output: 1K Ohm Potentiometer

Enclosure: NEMA 12

Linkage Rod: 5/16″ x 3′ Linkage

Swivel Joint Connection: ¼ – 20 Threaded