Model 2000 Flow Computer Instruction Manual
APPENDIX 6
Model 2000 issue 21 Page No
94
APPENDIX 6 Ultrasonic Meters
APPENDIX 6a Instromet QSonic
The Instromet QSonic meter is read using 2 modbus packets. Packet 1 contains the following data:-
Address Type Size Name
1000 Unsigned Integer 2 bytes Meter type
1001 Unsigned Integer 2 bytes Paths
1002 Unsigned Integer 2 bytes Sequence LO
1003 Unsigned Integer 2 bytes Sequence HI
1004 Unsigned Integer 2 bytes Sample
1005 - 1009 Unsigned Integer 2 bytes Valid samples. Paths 1 - 5
1010 - 1019 Unsigned Integer 2 bytes Agc level. Paths 1 - 5
1020 - 1029 Unsigned Integer 2 bytes Agc limit. Paths 1 - 5
1030 - 1034 Unsigned Integer 2 bytes Diagnostic bits. Paths 1 - 5
1035 Unsigned Integer 2 bytes V status
1036 Unsigned Integer 2 bytes Cr status
1037 Unsigned Integer 2 bytes Checksum 1
1038 Unsigned Integer 2 bytes Checksum 2
1039 Unsigned Integer 2 bytes Current mode
Packet 2 contains the following data:-
Address Type Size Name
1400 Floating Point 4 bytes Velocity of Sound
1401 Floating Point 4 bytes Velocity of Gas
1402 Floating Point 4 bytes Pressure
1403 Floating Point 4 bytes Temperature
1404 Floating Point 4 bytes Line volume flow rate
1405 Floating Point 4 bytes Base volume flow rate
1406 - 1410 Floating Point 4 bytes Cpp. Paths 1 - 5
1411 - 1415 Floating Point 4 bytes Vpp. Paths 1 - 5
1416 Floating Point 4 bytes Positive volume total
1417 Floating Point 4 bytes Negative volume total
1418 Floating Point 4 bytes Error positive volume total
1419 Floating Point 4 bytes Error negative volume total
1420 Floating Point 4 bytes T spare
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