Reference Guide User Manual

4.5 Next Factory Calibration

This field returns the expiration time of the installed sensor cap. This value is the lesser of the

cap manufactured time plus 24 months, or the cap start time plus 12 months. The probe returns

zero if the sensor cap is not installed.

4.6 Warm-Up Time

If automatic salinity correction is disabled, this register returns the RDO sensor warm-up time. If

automatic salinity correction is enabled, this register returns the sum of the RDO sensor and

conductivity sensor warm-up times.

4.7 Fast Sample Rate

If automatic salinity correction is disabled, this register returns the RDO sensor fast sample rate.

If automatic salinity correction is enabled, this register returns the sum of the RDO sensor and

conductivity sensor fast sample rates.

4.8 Parameter Registers—RDO

(registers)

Mode & Access Level

(R/W)

Data

Type

Description

Dissolved Oxygen Concentration

Dissolved oxygen concentration is calculated from the oxygen partial pressure and temperature using

settings contained in the sensor calibration registers.

If the parameter value is read when the sensor cap is not installed, the register returns the sentinel value

and a Data Quality ID of 7 (sensor communication error).

0038 2 R1 float Measured value, C

0040 1 R1 ushort Parameter ID = 20

0041 1 R1/W2 ushort Units ID

117 = mg/L (default)

118 = µg/L

0042 1 R1 ushort Data Quality ID

0043 2 R1/W3 float Off line sentinel value (default = 0.0)

0045 1 R1 16 bits Available Units = 0x0030 (48)

Temperature

0046 2 R1 float Measured value