Part Number: 42525
EGT LEADS 90"" TYPE K

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EGT LEADS 90"" TYPE K

Product Details

Installation Instructions 

 

Alcor Leads

  • High quality stranded material for flexibility and long life
    (cheapy single stranded leads are prone to break)
  • Used to attach a thermocouple probe to a gauge
  • Must be of the same type as the thermocouple
    (e.g. A type K probe must use type K leads)

 

 

CHT Leads:

  • Integrated resistor ensures the same resistance regardless of length
  • Choose leads based on the distance from the probe to the gauge

 

CHT Type J Black and Yellow 

 

P/N 

Resistance 

Length 

42535 

7.76 +/- .20 Ohms 

90" 

42536 

7.76 +/- .20 Ohms 

144" 

42543 

7.76 +/- .20 Ohms 

216" 

42537 

7.76 +/- .20 Ohms 

240" 

  

EGT/TIT Leads:

  • Each length has a different resistance
  • Total resistance of the lead and the probe must match the calibration of the gauge
  • Choose replacement leads based on the calibration of the existing gauge
  • For a new system, choose leads based on the distance from the probe to the gauge and choose a gauge with the corresponding calibration.

 

EGT Type K Red and Yellow 

P/N 

Resistance 

Length 

42525 

4.34 +/- .08 Ohms 

90" 

42526 

2.71 +/- .06 Ohms 

144" 

42528 

6.52 +/- .11 Ohms 

216" 

42527 

7.25 +/- .12 Ohms 

240" 

 

 

Calibration note:
EGT gauges with relative lean to peak markings may be easily recalibrated in flight per the instructions provided with the gauge. TIT, CHT and EGT gauges with True Temperature markings must either be recalibrated with an Alcal System Tester or returned to Alcor for recalibration if the total lead and probe resistance does not match the gauge calibration.

 

Digital or amplified gauges from other manufacturers are not sensitive to lead resistance, therefore leads may be shortened as needed for these applications without requiring recalibration.

 

 

 

ALCOR Instruments and Probes

Don't waste your money on cheap instruments and probes. There is a big difference!

 

Increase engine life and enhance safety through proper monitoring

  • Faster responding probes than low dollar alternatives
  • Temperature compensated gauges for accuracy all year round at any altitude
  • Single gauges monitor one cylinder, dual gauges for twin engine aircraft monitor one cylinder per engine. Add a selector switch to make an economical full engine analyzer. Lighted gauges and custom dials also available!

 

Alcor: A name you can trust

  • Over 50 years experience - Designed, manufactured and supported in the USA
  • Generous warranty: 3 years for gauges, 5 years for grounded probes, 1 year for ungrounded probes
  • FAA-PMA/STC approved for all aircraft with reciprocating engines

 

Simple installation

  • No power required from the aircraft (lighted gauges require power)
  • Works even with an electrical failure
  • Great for homebuilt or antique aircraft with no electrical system
  • Gauges include all mounting hardware
  • Standard 2 1/4" or 3 1/8" gauge sizes

 

Save with complete kits!

warningWARNING: Cancer and/or Reproductive Harm - www.P65warnings.ca.gov

Supersedures

OEM Part Number McFarlane Part Number Comment
42330 42525
42354 42525
42355 42525
42395 42525
42502 42525
42508 42525
42509 42525
42510 42525
42511 42525
42512 42525
756-616 42525

Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Quantity Per Aircraft Location Comment Eligibility Chart
Many Many Many 0 ZZZZZZZZZZZZZZZ