user manual

Rev. A2, 11/08 IRU-2xx4/3xx4
15
Automation Products Group, Inc.
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TEMPERATURE COMPENSATION
Temperature Compensation allows the operator to enable or disable tempera-
ture compensation. When this feature is enabled, the IRU-2XX4/3XX4 will make
adjustments for variations in temperature, which affects the speed of sound. This
will produce a more exact output.
To Read the Temperature Compensation in a sensor, use the command structure:
Send Receive
AAh Start Byte 66h Start Byte
01h, Sensor Number 01h Sensor Number
0Dh Command 0Dh Command
00h Data (not used) 00h Temp. Comp. (High Byte)
00h Data (not used) 00h NA(Low Byte)
55h End Byte 00h NA
99h Stop Byte
To change the Temperature Compensation in the sensor from OFF to ON, use the
command structure;
Send
AAh Start Byte
01h, Sensor Number
0Eh Command
01h Data Change to 1 for temp. Compensation ON
00h Data (not used)
55h End Byte