Emerson Rosemount 1057 Instruction Manual page 57

Instruction Manual
LIQ-MAN-1057
7.4.4 Calibrating The Sensor In A Conductivity Standard (In Process Cal)
This procedure is used to calibrate the sensor and analyzer against a solution of known conductivity.
This is done by submerging the probe in the sample of known conductivity, then adjusting the dis
played value, if necessary, to correspond to the conductivity value of the sample. Turn temperature
correction off and use the conductivity of the standard. Use a calibrated thermometer to measure
temperature. The probe must be cleaned before performing this procedure.
The adjacent screen appears after selecting In Process Cal from the
conductivity calibration screen.
The adjacent screen appears if In Process Cal is successful. The screen returns
to the conductivity Cal menu.
The adjacent screen may appear if In Process Cal is unsuccessful. The screen
returns to the conductivity Cal menu.
7.4.5 Calibrating The Sensor To A Laboratory Instrument (Meter Cal)
This procedure is used to check and correct the conductivity reading of the Model 1057 using a
laboratory conductivity instrument. This is done by submerging the conductivity probe in a bath and
measuring the conductivity of a grab sample of the same bath water with a separate laboratory
instrument. The Model 1057 reading is then adjusted to match the conductivity reading of the
lab instrument.
The adjacent screen appears after selecting Meter Cal from the conductivity
calibration screen
After pressing ENTER, the display shows the live value measured by the sensor.
If the Meter Cal is successful the screen returns to the conductivity Cal menu.
The adjacent screen appears if Meter Cal is unsuccessful. The screen
returns to the conductivity Cal menu.
Section 7: Calibration
Section 7: Calibration
April 2017
°
S1: 1.234µS/cm 1.234 C
°
S2: 12.34pH 1.234 C
°
S3: 12.34µS/cm 1.234 C
SN InProcess Cal
Wait for stable
reading.
°
S1: 1.234µS/cm 1.234 C
°
S2: 12.34pH 1.234 C
°
S3: 12.34µS/cm 1.234 C
SN InProcess Cal
Updated cell
constant:
1.00135/cm
°
S1: 1.234µS/cm 1.234 C
°
S2: 12.34pH 1.234 C
°
S3: 12.34µS/cm 1.234 C
SN InProcess Cal
Calibration
Error
Press EXIT
°
S1: 1.234µS/cm 1.234 C
°
S2: 12.34pH 1.234 C
°
S3: 12.34µS/cm 1.234 C
SN Meter Cal
Use precision
resistors only
°
S1: 1.234µS/cm 1.234 C
°
S2: 12.34pH 1.234 C
°
S3: 12.34µS/cm 1.234 C
SN Enter Value
xx.xx kΩ
°
S1: 1.234µS/cm 1.234 C
°
S2: 12.34pH 1.234 C
°
S3: 12.34µS/cm 1.234 C
SN Meter Cal
Calibration
Error
Press EXIT
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