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Gauge Indicators

Gauges. Gauge Indicators. (Non-Electronic). Automotive vehicles use two basic styles. BIMETALLIC GAUGES Thermo-electric Slow Movement U-Shaped Strip Free Arm contains a heater. Heat through coil distorts strip More Current deflects needle more. ELECTROMAGNETIC GAUGES Four Types

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Gauge Indicators

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  1. Gauges Gauge Indicators (Non-Electronic)

  2. Automotive vehicles use two basic styles

  3. BIMETALLIC GAUGES Thermo-electric Slow Movement U-Shaped Strip Free Arm contains a heater. Heat through coil distorts strip More Current deflects needle more ELECTROMAGNETIC GAUGES Four Types d’Arsonval Three-coil Two-coil Air core Two Styles of Gauges

  4. C303 Bimetallic Type

  5. C307 & C308 Balancing Coil Type

  6. C305 THREE COIL GAUGE

  7. C308 AIR CORE GAUGE

  8. d’ Arsonval Gauge

  9. Constant Voltage Regulator • Steady 5 volts • Why?

  10. TYPICAL TEMP GAUGE

  11. FUEL GAUGE SYSTEM

  12. SENDING UNITS • THREE TYPES • THERMISTOR • High Engine Temp = Resistance decreases • PIEZORESISTIVE • Sensitive to Pressure Changes • Is a variable Resistor • MECHANICAL VARIABLE RESISTOR • Contains sliding contacts

  13. C309 PIEZORESISTIVE SENSOR

  14. MECHANICAL VARIBLE RESISTOR

  15. OIL PRESSURE WARNING LIGHT SENDING UNIT C311

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