Input Calibration

8.7.7Cation pH Calibration

The UDA allows for a sample calibration of the specific or influent pH value. Here an independent sample is withdrawn from the sampling equipment and pH is determined with equipment of known accuracy. This independent pH value is then entered into the UDA as a pH calibration constant.

Recommended where pH is stable, or for high-purity water applications

This method is recommended only where the pH is stable and changes very slowly. It is also recommended for high-purity water measurement applications. Special instructions for high-purity water applications are provided below.

Materials

To use the sample method, follow the instructions in Table 8-4. Materials required are:

A clean beaker for collecting the sample.

A calibrated portable instrument for measuring pH of the sample.

Distilled or de-ionized water to rinse the electrode.

Procedure

Make sure both inputs are “Conductivity”.

Refer to Section 6.4.1 – General Rules for Editing.

Table 8-10 Procedure for Sample Method of Calibrating Cation pH

Step

Action

Screen

 

 

 

1Prepare the Calibration meter.

2

Calibrate

CALIBRATION

Press

Input PV Cal

 

 

 

Input Temp Cal

 

 

Output Cal

 

 

Cal History

 

 

 

 

 

 

 

 

 

 

 

 

Use to select

Input PV Cal

3

Enter

 

 

 

 

Press

 

 

Input 1 Conduc

 

 

 

 

Input 2 Conduc

 

 

Cation pH

 

 

 

 

 

 

 

 

 

Use to select

Cation pH

January 2009

UDA2182 Universal Dual Analyzer Product Manual

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Page 175
Image 175
Honeywell UDA2182 Cation pH Calibration, Procedure for Sample Method of Calibrating Cation pH, Input PV Cal Enter Press