Zeroing The Instrument; Calibrating The Sensor In A Conductivity Standard (In Process Cal) - Emerson Rosemount 1066 Instruction Manual

Instruction Manual
LIQ-MAN-1066
9.5.2

Zeroing the Instrument

This procedure is used to compensate for small offsets to the conductivity signal that are present
even when there is no conductivity to be measured. This procedure is affected by the length of
extension cable and should always be repeated if any changes in extension cable or sensor have
been made. Electrically connect the conductivity probe as it will actually be used and place the
measuring portion of the probe in air.
The adjacent screen will appear after selecting Zero Cal from the
Conductivity Calibration screen:
The adjacent screen will appear if zero Cal is successful. The screen will
return to the conductivity Cal Menu.
The adjacent screen may appear if zero Cal is unsuccessful.
9.5.3 Calibrating the Sensor in a Conductivity Standard
(in process cal)
This procedure is used to check and correct the conductivity reading of the 1066 to ensure that the
reading is accurate. This is done by submerging the probe in the sample of known conductivity, then
adjusting the displayed value, if necessary, to correspond to the conductivity value of the sample.
The probe must be cleaned before performing this procedure. The temperature reading must also be
checked and standardized if necessary, prior to performing this procedure.
The adjacent screen will appear after selecting In Process Cal from the
Conductivity Calibration screen:
The following screen will appear if In Process Cal is successful. The
screen will return to the conductivity Cal Menu.
This screen may appear if In Process Cal is unsuccessful. The screen will
return to the conductivity Cal Menu.
Calibration
Section 9: Calibration
April 2017
1.234 µS/cm 25.0 ºC
SN Zero Cal
In Air
In Water
1.234 µS/cm 25.0 ºC
SN Zero Cal
Sensor Zero Done
1.234 µS/cm 25.0 ºC
SN Zero Cal
Sensor Zero Fail
Offset too high
Press EXIT
1.234 µS/cm 25.0 ºC
SN InProcess Cal
Wait for stable
reading.
1.234 µS/cm 25.0 ºC
SN InProcess Cal
Updated cell
constant:
3.01350/cm
1.234 µS/cm 25.0 ºC
SN InProcess Cal
Calibration
Error
Press EXIT
75