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FCI Aerospace Division provides a complete line of temperature switches that feature up to 3 different switch points in a single sensor. The sensors use a Resistance Temperature Detector (RTD) and FCI’s electronic package to provide discrete high and low outputs at customer specified temperature ranges. If it is specified that only two switch points are needed, the sensor can be modified to provide a conditioned Analog output from the RTD in lieu of the third switch point. The lightweight, small package design can be used in a variety of aerospace and military applications.

The sensors are typically packaged in AISI 300 series stainless steel bodies and can be designed to support a variety of installation techniques. Custom designs can provide sensors made from aluminum, titanium, and other thermally conductive materials. Switches can be provided with a flange or threaded mounting connection. The threaded mounting connection includes straight military or aerospace style fittings that seal with O-rings or gaskets, or National Pipe Threads (NPT) that seal with pipe sealant or tape. The flanged mounting is available in a number of arrangements that will mate with virtually any customer’s process connection.
Features
  • No moving parts
  • High reliability
  • Wide temperature range
  • Up to 3 different switch points
  • Simple Installation
  • Light weight, compact design
  • Exceptional corrosion and abrasion resistance

Specifications

Accuracy

  • Switch Point Accuracy: ± 1° C (± 1.8° F)

Applications

  • Aerospace & Military Applications
  • Cabin Air Temperature Management
  • Coolant
  • Environmental Control Systems
  • Fluid Temperature Control
  • Power Management Systems
  • Temperature Limit Alarms

Approvals & Certifications

  • AS 9000
  • Dissimilar Metal: MIL-STD-889
  • EMI: MIL-STD-461/462
  • Environmental Testing: MIL-STD-810
  • ISO 9001
  • Markings: MIL-STD-130
  • Temperature Transmitter: MIL-STD-7990B

Electrical Connectors

  • Military or Commercial Connector
  • Pigtail with Cable

Enclosure, Body Material

  • 300 Series Stainless Steel

Humidity

  • 100 % Relative Humidity

Hysteresis

  • Switch Point Hysteresis: < 10° C (< 18° F)

Input

  • < 10 mA
  • 28 Vdc

Insertion 'U' Length

  • 0.16” to 4” (4 to 101.6 mm)

Materials of Construction

  • Sensor: Aluminum
  • Sensor: Titanium

Media

  • Liquids & Gases

Mounting

  • Flange Mount

NPT Connection

  • 1/4”-18 Dryseal Female NPT
  • 3/8”-18 Dryseal Female NPT

Operating Pressure

  • psi: 7,500 (kPa: 51,700, bar: 517)

Operating Temperature

  • -40° to 100° C (-40° to 212° F)

Output

  • 0.5 - 4.5 V
  • 4-20 mA
  • Close-Sink: 400 µA to 800 mA
  • Open-Leakage: < 40 µA

Proof Pressure

  • psig: 12,500 (kPa: 86,180 bar: 861.8)

Repeatability

  • Sensor Parameter: ± 0.5° C (± 0.9° F)

Resistance

  • Bonding: < 2.5 milliohms

Sensor, Probe Type

  • RTD
  • Thermistor

Set Point - Decreasing

  • -30° to 90° C (-22° to 194° F)

Set Point - Increasing

  • -30° to 90° C (-22° to 194° F)

Shock

  • Thermal Shock: 10° cycles/min

Switch Points

  • Three Switch Points

Temperature Range

  • Survival Temperature: -55° to 212° C (-67° to 414° F)

Vibration

  • Fixed Wing
  • Rotary

Voltage

  • I.R. / D.R. Test Voltage: < 500 Vdc

Wetted Materials

  • 300 Series Stainless Steel
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