Hi Bill,
Unfortunately there is not a simple yes or no answer to the sensor
connection question. Voltage output sensors like the OAT, AUX 1 & 2
air temp sensors and CHT / EGT can be hooked to several systems
at the same time but variable resistance sensors like the water & oil temp
& pressure sensors can not. The EM2 fuel level inputs were
designed to be used in parallel with Van's Aircraft fuel tank gauges.
The EM2 can measure tach speed in two ways. The default scheme is to
look at the rep rate of the fuel injector pulses. This could be used by
multiple systems. The other method is to use the serial engine data from
the EC2 and calculate RPM from one of the parameters in that data.
Greg at Blue Mountain had requested the EC2 protocol (I sent it)
and was going to build in an interface to the EC2. I doubt that he
has had time to do that though. There is only a tiny number of his
customers that would use this.
Yes, you have the switch type for the coil disable switch correct.
Tracy
Subject: [FlyRotary] Tracy, EM-2 question
Hi Tracy,
EM-2 and upgraded EC-2 arrived Saturday.
Thanks,
A question:
I am installing the Blue Mountain EFIS-1 in
addition to the EM-2. The BMA will allow logging of some of the engine
parameters for later analysis.
I believe you are planning on a BMA/EM-2 combo in
your RV-8 also. It is my understanding that I cannot hook a temperature or
pressure probe to both units, is that correct? What about Tachometer
connections?
EC-2 question: I apparently lost the coil disable
switch supplied with the EC-2 back in 01 when I originally received it. I
interpret the drawings/schematics as the switch being a (on)-off-(on) switch
(springloaded to center off position, with momentary on positions both ways).
Just want to verify that before I order a matching switch to my
others.
Bill Schertz
KIS Cruiser #
4045