9.3.2
Procedure - zeroing the sensor
Complete the following steps to calibrate the sensor with the zero standard.
1.
Remove the sensor from the flow cell and place it in a beaker of deionized water. Be
sure no air bubbles are trapped against the membrane. Observe the sensor current.
The current drops rapidly at first and then gradually reaches a stable zero value.
2.
To monitor the sensor current, press DIAG.
3.
Move the cursor to the chlorine sensor and press ENTER.
The input current is the first line in the display. Note the units: nA is nanoamps; uA is
microamps. Typical zero current for a 499ACL-02 sensor is -10 to +50 nA. A new
sensor or a sensor in which the electrolyte solution has been replaced may require
several hours (occasionally as long as overnight) to reach a minimum zero current.
Important
Do not start the zero routine until the sensor has been in the zero solution for at least two
hours.
4.
Press MENU.
The main Menu screen appears. The cursor is on
Calibrate
.
5.
Press ENTER.
6.
Choose the sensor you wish to calibrate.
Sensor 2
only appears if you have a dual input Rosemount 1056 Transmitter.
7.
Choose
Total Chlorine
.
Calibration
Instruction Manual
65
Содержание Rosemount TCL
Страница 4: ......
Страница 8: ...Contents iv Rosemount TCL ...
Страница 16: ...Description and specifications 8 Rosemount TCL ...
Страница 18: ...Principles of operation 10 Rosemount TCL ...
Страница 23: ...TCL Case Dimensions Figure 3 4 Reagent Tubing Assembly Figure 3 5 Installation Instruction Manual 15 ...
Страница 26: ...Installation 18 Rosemount TCL ...
Страница 34: ...Wiring 26 Rosemount TCL ...
Страница 46: ...Display and operation 38 Rosemount TCL ...
Страница 66: ...Programming the transmitter 58 Rosemount TCL ...
Страница 68: ...Digital communications 60 Rosemount TCL ...
Страница 106: ...Troubleshooting 98 Rosemount TCL ...