MODEL DO-03/04

SECTION 5.0

 

SOFTWARE CONFIGURATION

5.10MAIN SENSOR CALIBRATION PARAMETERS

1.Main sensor refers to the dissolved oxygen sensor.

Noise rejection

Main sensor cal

Security

ExitEnter

Stabilize : 0.050 ppm

Stabilize time: 10 sec

ExitEdit

Stabilize: 0.050 ppm

Stabilize time: 10 sec

Salinity : 0.0 o/oo

ExitEdit

2.Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4).

3.Move the cursor to "Configure" and press Enter (F4).

4.Move the cursor to "Main sensor cal" and press Enter (F4).

5.Use the ￿ and ￿ keys to move through the list of items. To make a change press Edit (F4). Use the arrow keys to change settings to the desired value and press Save (F4). For allowed ranges, see Table 5-1.

The choices depend on the measurement being made.

Stabilize and Stabilize time: For the analyzer to accept calibration data, the concentration must remain within a specified range for a specified period of time. The default values are 0.05 ppm and 10 sec- onds. Using a small stabilize value and a long stabilize time is the best protection against calibration while a reading is still changing.

Salinity: Salinity is used with oxygen measurements only. The solu- bility of oxygen in water depends on the concentration of dissolved salts in the water. Increasing the concentration decreases the solubil- ity. If the salt concentration is greater than about 1000 ppm, the accu-

racy of the measurement can be improved by applying a salinity cor- rection. Enter the salinity as parts per thousand (o/oo). One percent is ten parts per thousand.

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Emerson 51-DO-03, 51-DO-04 instruction manual Main sensor cal, Salinity 0.0 o/oo