Emerson Rosemount 1066, Инструкция по эксплуатации

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Section 9: Calibration Instruction Manual
April 2017 LIQ-MAN-1066
74 Calibration
Toroidal Conductivity Calibration
Calibration is the process of adjusting or standardizing the transmitter to a lab test or a calibrated
laboratory instrument, or standardizing to some known reference (such as a conductivity
standard). This section contains procedures for the first time use and for routine calibration of the
1066 transmitter.
To calibrate the conductivity loop with a connected contacting conductivity sensor, access the
Calibration screen by pressing ENTER from the main screen and press ENTER.
The following calibration routines are covered:
1. Zero Cal Zero the transmitter with the sensor attached
2. In Process Cal Standardize the sensor to a known conductivity
3. Cell K: 1.00000/cm Enter the cell Constant for the sensor
4. Meter Cal Calibrate the transmitter to a lab conductivity instrument
To calibrate toroidal conductivity:
1. Press the MENU button
2. Select Calibrate. Press ENTER.
3. Select Conductivity. Press ENTER.
The adjacent screen will appear. To calibrate Toroidal Conductivity or Temperature, scroll to the
desired item and press ENTER
The following sub-sections show the initial display screen that appears for each calibration routine.
Use the flow diagram for Conductivity calibration at the end of Section 7 and the live screen
prompts to complete calibration.
The adjacent screen appears after selecting Conductivity calibration:
Entering the Cell Constant
New toroidal sensors always need to be calibrated. The cell constant provided on the sensor label
is a nominal value and does not need to be entered.
This procedure sets up the transmitter for the probe type connected to the transmitter. Each type
of probe has a specific cell constant
The display screen for entering a cell constant for the sensor is shown.
The default value is displayed in bold type.
9.5
9.5.1
1.234 µS/cm 25.0 ºC
Calibration
Zero Cal
In Process Cal
Cell K: 2.7000/cm
1.234 µS/cm 25.0 ºC
Cell Constant
2.7000/cm