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
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CHT Type J Black and Yellow |
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P/N |
Resistance |
Length |
|
|
42535 |
7.76 +/- .20 Ohms |
90″ |
|
|
42536 |
7.76 +/- .20 Ohms |
144″ |
|
|
42543 |
7.76 +/- .20 Ohms |
216″ |
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42537 |
7.76 +/- .20 Ohms |
240″ |
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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.
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EGT Type K Red and Yellow |
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||
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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: 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 withcomplete kits!
Eligible Aircraft
| Make | Model | Start S/N | End S/N | Eligibility Chart |
|---|---|---|---|---|
| Many | Many | 0 | ZZZZZZZZZZZZZZZ | 6630 |
Part Number Information
Supersedes Part Numbers
42354 | 42355 | 42395 | 42502 | 42510 | 42511 | 42512 | 756-616 | 42509 | 42508 | 42330
Cross-reference information
Cross Reference Reference only: Please verify this product is appropriate for your use case before adding to your cart. OEM Part Number McFarlane Part Number Comment 42354 42525 42355 42525 42395 42525 42502 42525 42510 42525 42511 42525 42512 42525 756-616 42525 42509 42525 42508 42525 42330 42525
Additional product information
Approval: EASA STC (European Union) (DocumentNumber: Grandfathered) Approval: FAA PMA STC (DocumentNumber: SA522SW) SupersedesPartNumber: 42354 SupersedesPartNumber: 42355 SupersedesPartNumber: 42395 SupersedesPartNumber: 42502 SupersedesPartNumber: 42510 SupersedesPartNumber: 42511 SupersedesPartNumber: 42512 SupersedesPartNumber: 756-616 SupersedesPartNumber: 42509 SupersedesPartNumber: 42508 SupersedesPartNumber: 42330
