Major Function F7 – To read the RPM of a spinning propeller
This function is a tachometer used to check the RPM of 2-6 blade propellers. NOTE: The display will read
be 1/10 of the actual RPM so you must multiply the reading by 10 to get the correct RPM.
On the top of the MT-1 is the photocell to read the RPM. Do the test in sunlight or use a DC (direct current
or battery) light source such as a flashlight. Note: Do not use an A/C (alternating current such as house hold
light source) light source since the AC current alternates and may give a false reading.
Turn on the tester. And use the up and down keys to go to F7 and push MOD.
Select the number of propeller blades by pushing the up and down arrow keys. F7-2 is for 2 bladed props,
F7-3 is for 3 bladed props, F7-4 is for 4 bladed props etc. Push MID after selecting the correct number of
blades while pointing the photocell at the propeller. The RPM of the propeller will show in the display as
1/10 of the RPM – to get actual RPM, multiply the display reading by 10.
To Previous Page
Loading...