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5.4.5 Calibrate Sensor
Accessibility
Maintenance
Distributor
Factory
The
Calibrate Sensor
screen allows fine tuning of the pressure sensors used with the system as shown
in Figure 5-12. These values should only be adjusted if a sensor is consistently offset by a small
amount when there is zero pressure in the system.
Figure 5-12: Calibrate Sensor Screen
The value to the right of the
Core PIN [n]
labels are the current reading on the respective sensor as
seen by the analog to digital converter on the controller in a range of 0 to 3 VDC. The
PIN [n] Zero
values are the voltage levels set in the configuration for the zero pressure value of the corresponding
sensor. For example, if the
PIN 1 Zero
value is set to 0.70 as shown in Figure 5-8, the controller will
read 0 PSI on pressure input 1 when the controller sees a voltage level of 0.70 VDC.
Pressing the upper right button on the controller will cause the current value shown on
Core PIN 1
to
be stored as the new
PIN 1 Zero
value. The second button down from the upper right on the controller
will do the same for pressure sensor two, and the third button down for pressure sensor three.
Along with the first page of the
Core PIN [n]
labels, there are two other pages for the I/O expansion
module. These labels are shown as
Exp PIN [n]
. These values may be stored in the same way as the
Core PIN [n]
values.
Note:
The correct range for the zero value will vary depending on the sensor model installed on the
system and should be set correctly during factory commissioning. Values off by more than 2 PSI most
likely indicate a bad pressure transducer -- do not attempt to correct this by calibrating the sensor.
5.4.6 Communications
Accessibility
Maintenance
Distributor
Factory
The next item in the
Machine Configuration
menu is
Communications
. The
Communications
menu
allows the distributor and factory users to change communication parameters such as baud rate, stop
bits, parity, Modbus ID, IP address, subnet mask, and gateway address.
Содержание AIRSMART
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