[The EAC-1] looks great running… The wiring harness was very well fabricated. Installation was easy- fit perfectly in an existing hole in panel. The brightness of the display is excellent.
TR-1-FF Fuel Flow Instrument
FAA Approved Instrument
- FAA TSO’d
- Upgrade your aircraft panel with the best turboprop replacement instruments available.
Easy To Install
- TR-1 instruments fit into your existing 2″ hole.
Accurate, Dependable & Reliable
- Electronics International consistently has been a leader in digital engine instrumentation since 1979.
Available Data Recording of Every Flight
- 1,000 hours at 1 second per record for trend analysis and to log limits which have been exceeded.
Questions?
8am–4:30pm PST M–F
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Product Overview
TR-1 Features
Our TR-1 provides exceptional performance, reliability and features. If you need to replace or overhaul an old failing instrument, consider buying one of our TR-1s from a company which has been designing quality aircraft instrumentation for over 40 years. Purchasing our TR-1 is substantially less expensive than overhauling or replacing your old needle gauge. We’re able to make this offer with a money-back guarantee because we’re confident you’ll love the performance, reliability and features these instruments offer.
- Standard two-inch round (MS28042-1A mount), 4.23″ long.
- Rugged and reliable design (unlike many old needle gauges).
- Optional RS-232 input and output port to interface with EEC’s, FADEC’s and other devices.
- Custom calibration (mapping) for unparalleled accuracy.
- Optional two open-collector (pull-down) for controlling external warning lights or props (0.1 Amps max).
- Optional ARINC 429 compatible via the BC-5 (contact EI Support for details).
- Available Bluetooth connectivity, great for remote fleet calibration and data downloads.
Additional TR-1 Models Include:
| Amps | AOA | Bleed Air Temp | Cabin Pressure |
| Diff Air Pressure | EGT | EPR | Fuel Flow* |
| Fuel Level | Fuel Pressure | Hyd | ITT* |
| NG/N1* | NP/N2* | O2 Pressure | OAT |
| Oil Pressure | Oil Temp | TAT | TGT |
| Torque* | TOT | Volts | And More! |
* See Product Page
Prices
TR-1 Options and Retail Prices
We offer two package options for our TR-1 instruments: Standard and Premium. The Standard TR-1 package is designed to meet the price point for customers wanting rugged and reliable replacement instruments at a great price. The Premium TR-1 package is targeted for customers that need to minimize AOG time.
TR-1-FF Standard Package
- 1 year warranty.
- No Risk, three-month money-back guarantee.
- 8130-3 airworthiness approval tag provided.
$1,700 Retail
TR-1-FF-P Premium Package
- 3 year warranty.
- No Risk, three month money-back guarantee.
- 1,000+ hours of recording at 1/3 second per record.
- Priority service on warranties and orders.
- Free overnight shipping on warranties and orders (USA only).
- Warranties will be handled by providing an exchange unit.
- Spare printed faceplates with your aircraft’s markings will be held in stock.
- Spare blank units (without faceplates) will be held in stock.
- 8130-3 airworthiness approval tag provided.
- Exchange the unit(s) for an MVP-50T within one year and get full credit on TR-1s purchased.
$2,000 Retail
TR-1-FF Additional Option
Bluetooth Field Calibration Device [FCD-TR-1] (add $600)
All Packages Include:
- Warranty.
- No Risk, three-month money-back guarantee.
- 8130-3 airworthiness approval tag provided.
Description
Package
Retail Price
TR-1-FF Fuel Flow Instrument – Standard Package
TR-1-FF
$1,700
TR-1-FF Fuel Flow Instrument – Premium Package
TR-1-FF
$2,000
Bluetooth Field Calibration Device – Option
FCD-TR-1
$600

Specifications
TR-1 Specifications
Dimensions
2″ standard round, 4.23″ long
Weight
0.3 Pounds (Instrument Only)
Power Requirements
6 to 55 Volts
Typical: 0.075 amps @ 28 Volts
Dimming
Auto (electric eye) and Manual
Environmental
DO-160G
Internal Storage
1,000 hours, RS232 port (premium only)
Certifications
FAA TSO’d -C43c, -C44c, -C45b, -C47a, -49b, -C55a

Videos
Product Videos
TR-1 Turboprop Instruments Overview
Documents
Documents & Manuals
Testimonials
Customer Testimonials
The [unit] is easy to read and quick to respond. I have multiple EI units and have had good experiences with all.
- Customer
Thomas C. from Maine
- Aircraft
Maule M-5-235C Luna Rocket
- EI Instrument
Customer Service is far superior… with an excellent record of resolving … technical issues.
- Customer
C.J. R. from North Carolina
- Aircraft
Mooney M20C Ranger
- EI Instrument
Haven’t used it yet, but we are excited to & Love the way it looks!!
- Customer
Larry A . From Idaho
- Aircraft
Piper PA-28R-200 Arrow
- EI Instrument
[I chose EI because of its] reputation [and the] quality and appearance of the instrument.
- Customer
Denis F. from Alberta Canada
- Aircraft
Piper PA-28R-201T Turbo Arrow III
- EI Instrument
Good value and functionality. I’ve used your instruments on multiple aircraft thru the years with no issues. These are a nice upgrade over the original instruments in most older aircraft.
Great service. [I replaced/upgraded] unit in aircraft.
- Customer
Adam M. from NSW, Australia
- Aircraft
Piper PA-28-181 Cherokee
- EI Instrument
I have been flying with EI instruments for over 20 years. I purchased the CGR-30P to update my engine instruments into one modern package.
You folks do a great job. Keep up the good work.
- Customer
Kevin D. from Missouri
- Aircraft
Cessna 172 Skyhawk
- EI Instrument
Customer service always quick and easy. [I chose E.I. because of] price and being recommended by friends.
- Customer
Kenneth C. from Florida
- Aircraft
Piper PA-32-260 Cherokee Six E
- EI Instrument
Very easy to install and directions were straight-forward.
- Customer
Paul H. from Oklahoma
- Aircraft
Piper PA-28-151 Cherokee Warrior
- EI Instrument
Your (customer) service is excellent!
- Customer
Thomas T. from Washington
- Aircraft
Piper PA-18-150
- EI Instrument