82
7.4.2 Entering The Cell Constant
New conductivity sensors rarely need calibration. The
cell constant printed on the label is sufficiently accurate
for most applications. The cell constant should be
entered:
• When the unit is installed for the first time
• When the probe is replaced
The display screen for entering a cell Constant for the
sensor is shown. The default value is displayed in
bold
type.
7.4.3 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. Be
sure the probe is dry.
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.
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
S
N
Cell Constant
1
.00000 /cm
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
S
N
Zero Cal
In Air
In Water
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 displayed 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 ther-
mometer to measure temperature. The probe must be
cleaned before performing this procedure.
The adjacent screen will appear after selecting In
Process Cal
from the Conductivity Calibration screen:
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
S
N
InProcess Cal
Wait for stable
reading.
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
S
N
Zero Cal
Sensor Zero Fail
Offset too high
Press EXIT
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
S
N
Zero Cal
Sensor Zero Done
Instruction Manual
LIQ-MAN-1056
Section 7.0: Calibration
April 2017
Содержание Rosemount 1056
Страница 1: ...Instruction Manual LIQ MAN 1056 Rev K April 2017 Rosemount 1056 Dual Input Intelligent Analyzer ...
Страница 4: ...Quick Start Guide Figure A Quick Start Guide ...
Страница 5: ...Quick Reference Guide Figure B Model 1056 Menu Tree ...
Страница 28: ...20 Instruction Manual LIQ MAN 1056 Section 2 0 Installation April 2017 ...
Страница 50: ...42 Instruction Manual LIQ MAN 1056 Section 6 0 Programming the Measurements April 2017 ...
Страница 84: ...76 Instruction Manual LIQ MAN 1056 Section 6 0 Programming the Measurements April 2017 ...
Страница 113: ...105 FIGURE 7 1 Calibrate pH Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 114: ...106 FIGURE 7 2 Calibrate ORP Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 117: ...109 FIGURE 7 5 Calibrate Oxygen Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 118: ...110 FIGURE 7 6 Calibrate Ozone Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 119: ...111 FIGURE 7 7 Calibrate Temperature Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 120: ...112 FIGURE 7 8 Calibrate Turbidity Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 121: ...113 FIGURE 7 9 Calibrate Flow Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 122: ...114 Instruction Manual LIQ MAN 1056 Section 7 0 Calibration April 2017 ...
Страница 124: ...116 Instruction Manual LIQ MAN 1056 Section 8 0 Return of Material April 2017 ...