Sign up Calendar Latest Topics Donate
 
 
 


Reply
  Author   Comment  
fredyarevalo

Member
Registered:
Posts: 30
Reply with quote  #1 
Good morning gentlemen,
I am new to csi 2130 phase reading. I am getting negative numers por phase values. I have learned that csi uses 180. - 180 circle onstead of 360
I have a hard time figuring this out.
Can you please point me to some info about this topic

Instead of 0 to 360 circle stating a t 12 oclock. Does csi starts at 90 position?


Thank you in advanced
fburgos

Sr. Member
Registered:
Posts: 670
Reply with quote  #2 
yes csi has negative values 0 it allways start from 0,

positive angle starts from zero and increase against rotation
Negative angle starts from zero and increas in rotation... you can add 360 to negative values.

I know its little confusing for example if you are comparing phase measurements, if you have "-175 and 175" are in phase but "-95 and 95" are out of phase 180 degrees

i know you're not asking but if you go to balancing program by default csi uses first component at 0°, and angle increases against rotation.

for example if you have 3 compoenents

C1 is 0°
C2 is 120 degrees
C3 is 240 degrees

if you have 8 components

C1 is 0°
C2 is 45°
C3 is 90°
C4 is 135°
C5 is 180°
etc..
C8 is 315°

if you choose advance banlance you can choose the angle of first component.... I always use 360 divided by #components to use last component as 0° or 360° angle.
John from PA

Sr. Member
Registered:
Posts: 963
Reply with quote  #3 
Quote:
Originally Posted by fburgos
yes csi has negative values 0 it allways start from 0,

positive angle starts from zero and increase against rotation
Negative angle starts from zero and increas in rotation... you can add 360 to negative values.

I know its little confusing for example if you are comparing phase measurements, if you have "-175 and 175" are in phase but "-95 and 95" are out of phase 180 degrees

i know you're not asking but if you go to balancing program by default csi uses first component at 0°, and angle increases against rotation.

for example if you have 3 compoenents

C1 is 0°
C2 is 120 degrees
C3 is 240 degrees

if you have 8 components

C1 is 0°
C2 is 45°
C3 is 90°
C4 is 135°
C5 is 180°
etc..
C8 is 315°

if you choose advance banlance you can choose the angle of first component.... I always use 360 divided by #components to use last component as 0° or 360° angle.


I have one comment...

1.  I knew there was a reason I hated CSI, I had just forgotten it.  Thank you for the reminder!

To the OP, should you need it the reference manual can be found at https://www.maintenance.org/fileSendAction/fcType/0/fcOid/400998571506985888/filePointer/401420994973995345/fodoid/401420994973995341/2130_ru_refmanual.pdf




Vibe-Rater

Avatar / Picture

Sr. Member / Moderator / Supporter
Registered:
Posts: 1,397
Reply with quote  #4 
Why do you hate CSI John? It is awesome. rgds
fredyarevalo

Member
Registered:
Posts: 30
Reply with quote  #5 
Thank you John
OLi

Sr. Member
Registered:
Posts: 1,914
Reply with quote  #6 
It's like a drug, at first it's the best there are since there were no other than you get addicted and can't be w/o it....... It must hit the same feedback system in the brain as coffee.?
__________________
Good Vibrations since early 1950's, first patented vibrometer 1956 in the US.
http://www.vtab.se
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.