Bently Nevada 3300/48, Руководство по эксплуатации

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13
Calibrate Channels [Cont]
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Case Expansion Monitor Maintenance 84418-01
9. Move the core exactly the total linear
distance of the full scale meter range in the
upscale direction (opposite of direction of
movement in step 6). The transducer output
should be within the range indicated if Table
6 on page 24.
10.Activate the channel A gain adjust dipswitch
(GA) by moving it to the left. The channel A
bar graph will begin to flash. Measure the
voltage at Test point channel A (TA) using
the multimeter.
11.Press the MODE switch and use the system
monitor (r) and (4) to adjust the gain__untiL
the Test point channel A (TA) is at +5.0
±0.05 Vdc and the bypass LED is o n
steady (not flashing). The flashing bypass
LED indicates an over-range condition. If
this occurs, reduce the gain using the
system monitor (I) switch.
12.De-activate the channel A gain adjust switch
(GA) by moving it to the right. If the short is
removed from the Calibration terminals (CA)
before the dipswitch is de-activated, the
adjustment will not be stored.
13.Remove the clip lead (or jumper) from the
Calibration terminals (CA).
CM! OPPAi
i011701
r . - 0 •
ZA
ZB
GA ( _ , J
GB - 4 =
LTIED
ON OFF /
14.After the monitor channel is calibrated, the case expansion transducer must be reinstalled and
adjusted to indicate zero expansion when the machine case is cold.
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