In-Situ Aqua TROLL 400 Modbus and SDI-12 Reference Guide - Manual (Page 38)

5.2 Parameter Registers—Conductivity
Register Size
(registers)
Mode & Access Level
(R/W)
Data
Type
Description
Actual Conductivity
0538 2 R1 float Measured value, AC
0540 1 R1 ushort Parameter ID = 9
(actual conductivity)
0541 1 R1/W2 ushort Units ID
65 = microsiemens
per centimeter (default)
66 = millisiemens
per centimeter
0542 1 R1 ushort Data Quality ID
0543 2 R1/W3 float Off line sentinel value
(default = 0.0)
0545 1 R1 16 bits Available Units = 0x0003 (3)
Temperature
0546 2 R1 float Measured value
0548 1 R1 ushort Parameter ID = 1
(temperature)
0549 1 R1/W2 ushort Units ID
1 =
°C (default)
2 =
°F
0550 1 R1 ushort Data Quality ID
0551 2 R1/W3 float Off line sentinel value
(default = 0.0)
0553 1 R1 16 bits Available Units = 0x0003 (3)
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