Specifications

Reference Manual
MHM-97408, Rev. 2
June 2008
CSI 9420
2-10
Figure 2-5. Sensor Sensitivity
For improved accuracy, the nominal value of 25mV/g should be replaced with
the value corresponding to your specific sensor.
ALARM LEVELS The CSI 9420 sets HART status bits to indicate when measured values
exceed the configured thresholds. Each measured value has three (3) levels:
Advisory, Maintenance, and Failed that may be set independently. These
thresholds are preconfigured at the factory to reasonable generic values for
single-stage, electric motor-driver equipment trains operating at line
frequency. The default alert levels for vibration are shown in Table 2-4.
Table 2-4. Default Alert
Thresholds for Vibration
The level at which these thresholds should be set obviously depends on the
type of equipment being monitored and on your specific process. For more
information on how to set the thresholds refer to Appendix C: Velocity,
PeakVue®, and Temperature, or consult with a vibration specialist.
Fast Keys 1, 1, 5
Parameter
Advisory Maintenance Failed
Level Enabled Level Enabled Level Enabled
Overall Velocity,
Accel 1 (PV)
0.14
in/sec.
(3.56
mm/s)
Yes 0.35 in/sec.
(8.89
mm/s)
Yes 1.0 in/sec.
(25.4
mm/s)
Yes
PeakVue,
Accel1 (SV)
6 g Yes 10 g Yes 15 g Yes