Emerson Rosemount 1056 User Manual

95
A detailed flow diagram is provided at the end of Sec. 7 to guide you through the calibration routines.
Oxygen sensors generate a current directly proportional
to the concentration of dissolved oxygen in the sample.
Calibrating the sensor requires exposing it to a solution
containing no oxygen (zero standard) and to a solution
containing a known amount of oxygen (full-scale standard).
Automatic air calibration is standard. The user simply
exposes the sensor to water-saturated air.
To calibrate oxygen:
1. Press the MENU button
2. Select Calibrate. Press ENTER.
3. Select Sensor 1 or Sensor 2 corresponding to
oxygen. Press ENTER.
4. Select Oxygen. Press ENTER.
The adjacent screen will appear. To calibrate Oxygen
or Temperature, scroll to the desired item and press
ENTER
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
SN Calibrate?
Oxygen
Temperature
The following sub-sections provide you with the initial
display screen that appears for each calibration routine.
Use the flow diagram for Oxygen calibration at the
end of Sec. 7 and the live screen prompts for each routine
to complete calibration.
The adjacent screen appears after selecting Oxygen
calibration:
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
SN Calibration
Air Cal
Zero Cal
In Process Cal
Sen@ 25°C:2500nA/ppm
Zero Current: 1234nA
Air calibration criteria can be changed. The following
criteria can be adjusted:
 Stabilization time (default 10 sec.)
 Stabilization pH value (default 0.05 ppm)
 Salinity of the solution to be measured (default
00.0 parts per thousand)
The adjacent screen will appear to allow adjustment of
these criteria”
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
SN Setup
Stable Time: 10 sec
Stable Delta: 0.05 ppm
Salinity: 00.0 ‰
Measure Sec. Calibration function: default value
Description
Oxygen
7.7.2 Zero Cal Zeroing the sensor in a medium with zero oxygen
7.7.3
Air Cal
Calibrating the sensor in a water-saturated air sample
7.7.4
In Process Cal Standardizing to a sample of known oxygen concentration
7.7.5
Sen@ 25°C:2500nA/ppm Entering a known slope value for sensor response
7.7.6
Zero Current: 0nA
Entering a known zero current for a specific sensor
TABLE 7- 9 Oxygen Calibration Routines
95
Instruction Manual
LIQ-MAN-1056
Section 7.0: Calibration
April 2017

Emerson Rosemount 1056 Specifications

General

Brand	Emerson
Model	Rosemount 1056
Category	Transmitter
Language	English