No time for temperature measurement instrumentation theory 101 today so I'll just give you the typical values for the coolant (and oil) temperature channels.  Just plug these values in and see what happens.

 

Scale factor -  2.151

Low end offset  - 100

Sensor offset -  390

Low alarm limit  - 0  (or whatever you want)

High alarm limit -   210 for 2 & 3 gen, 225 for Renesis

 

If still no joy, disconnect the temp sensor and check reading for change.

If no change,  disconnect wire for coolant temp at EM2 connector and check for change

 

If still no change, EM2 is bad (not likely since similar channels on unit are working) 

 

Most likely problem is a short to ground on the sensor line.

 

Hope this helps.

 

Tracy  (suddenly busy again)

 

On 8/2/07, Christopher Barber <CBarber@texasattorney.net> wrote:

Shocking....Chris is asking another question about the EM2.  Hey, me asking
questions means I am out there trying to make progress......not that I am
defensive or anything <g>

Anyway, since my "buttons" issue the Coolant Temperature on the main screen
has been showing "0".    The oil temp is working ok.  I figured that I must
have inadvertently set it to 0 when I was having my button problem.  I
figured now that the buttons are working properly I could just go and
calibrate it.  Figured a good starting point would be to use the cold oil
temp as a guide.  However, when I try to calibrate it, it will not change
from zero.  I thought that maybe there was not % change from zero and I
tried changing other calibration modes but nothing I have currently tried
has changed it from zero.  I admit to very little current understanding of
the calibration feature at this time (even though  I really like that it is
included in the EM2....I like options even though they can be a pain
sometimes).

Any direction on how to get this off of zero would be helpful as I am
hesitant to start the dang thing 'till I can know how hot the coolant
is....I know I can get some idea from the oil, but still.

David Staten will probable be much better at figuring this out, but we have
not been able to meet up for actual progress in the last few days.  TIA.

All the best,

Chris

Christopher Barber
Attorney and Counselor at Law
5110 Bissonnet, No 418
Bellaire, Texas 77401

Serving the Needs of Senior Texans

281-464-LAWS (5297)
281-754-4168 Fax
www.TexasAttorney.net



--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html