ULFIA CMT-2, Руководство пользователя

Страница: 11 / 14

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 11 of 14
Step through the following tests by turning the knob TEST NO.
ROTARY what you are measuring
SWITCH [ what unit you could test ] If not mentioned all units applies.
POSITION = the correct reading on the DMM
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1 DC-voltage from the roller battery or external power supply :
= e.g. 12.2Vdc, (min. 11 max. 14 Vdc).
2 Resistance of CMV-indicator :
indicator type: 85mm
ULFIA 38-0005 = 428 - 524 ohms
80mm ULFIA 38-0017 = 890 - 925 ohms
3 not used
4 DC-voltage supply from processor RECORDER connector to pen-recorder
or onboard computer (e.g. CCS-RA2) :
[
CMP-2B, ALPHA 8.2 ]
= 0.7 to 1.2V below voltage level in test 1
5 not used
6 DC-voltage supply to sensor from processor SENSOR-connector :
= 0.8 to 1.5Vdc below voltage level in test 4 with sensor connected
7 DC-voltage from sensor to processor SENSOR-connector (without vibrations) :
= 2.9 to 3.4Vdc
When the drum is vibrating, the signal from the sensor could be checked
with the DMM in Vac -position and CMV-switch in SENSOR SIGNAL position.
Vibration
frequency
Vibration
amplitude
DMM reading
(typical)
Hz mm Vac(rms)
27 1.8 0.37
29 1.6 0.38
30 1.7 0.44
33 0.8 0.25
40 0.8 0.36
50 0.5 0.36
70 0.3 0.42
Using the test box, continued