Field test apparatus for analysis of coolants and heat-exchange fluids

An apparatus for testing a heat exchange fluid containing carboxylate corrosion inhibitors, comprising:

• a vessel configured to contain a sample of the heat exchange fluid;
• a first reservoir configured to contain a titration reagent, wherein said titration reagent is an acid;
• a second reservoir configured to contain a treatment agent;
• a first pump configured to transfer said titration reagent from said first reservoir to said vessel;
• a second pump configured to transfer said treatment agent from said second reservoir to said vessel;
• a pH electrode configured to measure a pH of said sample;
• and
• a controlling means, coupled to said pH electrode, for controlling said first and second pumps responsive to the measured pH,
• wherein said electrode measures an initial pH of the sample, said controlling means compares said initial pH to a first predetermined pH value, and said controlling means causes said first pump to transfer a first quantity of said titration reagent into said vessel when said initial pH is greater than said first predetermined pH value;
• wherein said electrode measures a pH at a first equilibrium point, said controlling means determines a contamination level from said pH at said first equilibrium point, and said controlling means causes said first pump to transfer a second quantity of said titration reagent into said vessel when said contamination level is less than a predetermined contamination level value;
• and
• wherein said electrode measures a pH at a second equilibrium point, said controlling means calculates a carboxylate corrosion inhibitor content and said controlling means causes said second pump to transfer an amount of said treatment agent into said vessel until said electrode measures a pH above a second predetermined pH value.