Honeywell UDA2182 manual Concentration values, Data for Concentration Range Measurements

Models: UDA2182

1 258
Download 258 pages 46.92 Kb
Page 229
Image 229

Appendices

Example 1: To determine the check resistor value needed to simulate conductivity measurement of 10 μS, use cell constant 0.1 and perform the following calculation:

10 k ohms = (0.1) x (1,000,000)

10

Example 2: To determine the check resistor value needed to simulate resistivity measurement of 10 M ohms, use cell constant 0.01 and perform the following calculation:

100 K ohms = (0.01) x (10,000,000)

Concentration values

Obtain the appropriate check resistance value from the table below.

Table 15-1 Data for Concentration Range Measurements

Material/Weight % Concentration

Simulation Resistance (ohms) @ 25º C

 

 

Cell Constant

 

 

10

25

50

 

 

 

 

Hydrochloric Acid (HCl)

 

 

 

0

 

1

 

242.5

485.0

4

 

68.9

137.7

 

 

 

 

Sulfuric Acid (H2SO4)

 

 

 

0

1

215.5

538.7

1077.4

4

56.0

140.0

280.0

 

 

 

 

Sodium Chloride (NaCl)

 

 

 

0

1

574.1

1435.1

2870.3

4

195.2

398.0

796.1

 

 

 

 

Sodium Hydroxide (NaOH)

 

 

 

0

1

189.2

473.0

946.1

4

54.0

135.1

270.1

 

 

 

 

January 2009

UDA2182 Universal Dual Analyzer Product Manual

217

Page 229
Image 229
Honeywell UDA2182 manual Concentration values, Data for Concentration Range Measurements