2.1.4 Sensor configuration
The CSI 9420 can be installed with two accelerometers, or with one accelerometer with an
embedded temperature sensor. Table 2-2 shows the possible sensor configurations and
variable mappings.
Possible sensor configurations and variable mappingsTable 2-2:
Dynamic process
variables
Available process variables based on sensor configuration
Sensor 1: Accelerometer
Sensor 2: Not Installed
Sensor 1 and 2: Accelerometer
with Temperature
Sensor 1: Accelerometer
Sensor 2: Accelerometer
PV Overall Velocity Sensor 1 Overall Velocity Sensor 1 Overall Velocity Sensor 1
SV PeakVue Sensor 1 PeakVue Sensor 1 PeakVue Sensor 1
TV Bias Sensor 1 Sensor Temperature Overall Velocity Sensor 2
QV Supply Voltage Supply Voltage PeakVue Sensor 2
Unmapped device
variables
Ambient Temperature
Ambient Temperature
Bias Sensor 1
Bias Sensor 1
Bias Sensor 2
Ambient Temperature
Supply Voltage
Each sensor is characterized at the factory to determine the precise sensitivity. This
information is included with the sensor, in the form of a certificate, and may be cross-
referenced with the serial number as shown in Figure 2-3.
Calibration certificateFigure 2-3:
Configuration
MHM-97408, Rev 15 13