ULFIA Elektronik AB
24-0025-3201-64
CMT-2 Test box
2003-04-21 U.A.
rev. 1
page 13 of 14
9
DC-voltage ,CMV-signal, from processor RECORDER-connector to pen-
recorder or onboard computer (e.g. CCS-RA2) :
[
CMP-2B,CMP-3, ALPHA 8.2
]
Wait 5 s and then switch to CMV 150.
With
FREQ. CORR.OFF
( rotary switch position =1 ) selected on the processor :
CMT-2
Calibrator CMV
position
Bouncing
button
DMM reading =
(Vdc)
150 (20%)
OFF
+4.8 -- +5.2
“
ON
+6.5 -- +7
100 (16%)
OFF
+3.2 -- +3,5
“
ON
+3.2 -- +3,5
50
+1.5 -- +1.73
0
-0.1 -- +0.1
10
Vibration frequency pulses from processor RECORDER-connector to
frequency meter or onboard computer (e.g. CCS-RA2) :
[
CMP-2B, CMP-3, ALPHA 8.2
]
= 6 to 8Vac
11
DC-voltage proportional to vibration frequency on EXTENSION connector :
[
CMP-2B, ALPHA 8.2
]
Scale factor = 0.5Vdc / 10Hz
Frequency selected on
CMT-2 calibrator
DMM reading =
(typical)
rpm
= Hz
Vdc
1500
25
1.25
1700
28.3
1.41
2000
33.3
1.67
2500
41.7
2.08
3000
50
2.5
12
DC-voltage proportional to vibration amplitude on EXTENSION connector :
[
CMP-2B, ALPHA 8.2
]
Scale factor = 1Vdc / 1mm
Frequency selected on
CMT-2 calibrator
DMM reading =
(typical)
rpm
= Hz
Vdc
1500
25
1.4
1700
28.3
1.1
2000
33.3
0.78
2500
41.7
0.5
3000
50
0.34
Summary of Contents for CMT-2
Page 8: ......
