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UMA Magnetic Tach Sender T1A3-4
MFR Model# T1A3-4 2 PULSE
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Reviews
Installed the UMA tach sender to provide an RPM input to a Dynon EMS after replacing the magneto with a Surefly ignition. I never considered the previous P-lead derived RPM indication to be jerky, however with the UMA sender in place there is now a noticeable smoothness and fluidity to the RPM indication. Very happy.
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UMA Magnetic Tachometer Sender T1A3-4
Perfect match for the Garmin G3X. The sender swivels making it very user friendly in tight installations . The lead does require soldering .
Brilliant service, very speedy delivery
This tach sending unit can be used with any unit that can work within specs below: Input voltage (+VSS) range is +5 to +28 volts DC, current draw 10mA. Output - square wave +5 to +VSS, 4 pulses per tang revolution, Impedance is 2.7K ohm. Since ratio between the engine and mechanical port is 2:1, digital reader have to be set to 2 pulse per rev.
Q&A
Please note, Aircraft Spruce ®'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce ® assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
As these products are both manufactured by different companies, neither has provided information regarding compatibility.
This comes with a cannon plug that you would use to make a harness. The plug has 4 connectors but the wiring diagram notes that you would use only 3.