APG IRU-3000 user manual User Manual
Page 11

Rev. A2, 11/08
IRU-2xx4/3xx4
11
Automation Products Group, Inc.
APG...Providing tailored solutions for measurement applications
Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • [email protected]
BLANKING
Blanking allows the sensor to ignore all echoes returned before this distance.
There is a minimum distance to which this can be set which is 152 millimeters.
This distance (or time) allows the ceramic in the transducer to stop vibrating after
it has transmitted a series of pules.
To read the current setting for the blanking in the sensor:
Send
Receive
AAh
Start Byte
66h
Start Byte
01h,
Sensor Number
01h
Sensor Number
05h
Command
05h
Command
00h
Data (not used)
##h
Blanking (High Byte)
00h
Data (not used)
##h
Blanking (Low Byte)
55h
End Byte
##h
NA
99h
Stop Byte
To send a new Blanking distance use the command structure:
Send
AAh
Start Byte
01h,
Sensor Number
06h
Command
00h
Data (High Byte)
00h
Data (Low Byte)
55h
End Byte
Example: Suppose the sensor is mounted in a position that were a partial
structure is located 600 mm from the sensor head. The desired detection range
is from 650 mm to 2100 mm . Setting the blanking at 620mm would allow the
sensor to ignore the structure and monitor the desired detection area.