FAQ - water and wastewater treatment equipment, chemical metering, flow measurement, and process control.

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How do you calibrate a pH sensor?

Normally, a pH sensor is calibrated using a pH 7.0 buffer solution first. D1C and D2C controllers ask for a 2-point calibration, so the sensor would be calibrated at the second point using a pH 4.0 pr pH 10.0 buffer solution.

May-03-2006

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How do I replace the pump diaphragm?

1. Remove the four screws that hold on the liquid end. The screws are located in the back of the pump.

May-03-2006

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Can I use the CLE sensor in water with a high turbidity level?

No, the recommended range of the sensor is 100 to 300 mg of hardness. Reduce the turbidity by filtering and then run the test samples. The sensor membrane can be clogged by a highly turbid sample.

May-03-2006

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What is the approximate life of a pH sensor?

Most pH sensors have a normal life of 6 months to 1 year, depending on system and solution conditions.

May-03-2006

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What are the primary advantages of a solenoid driven metering pump?

The pump drive has only one moving part, the armature shaft. Generally the less moving parts, the more reliable the pump. Solenoid pumps are very good for low pressure applications and compensation for line voltage fluctutions are excellent.

May-03-2006

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What information is required to select the proper pump?

1. Volume of liquid to be dispensed.

May-03-2006

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What is the best way to clean sensors?

Glass sensors should be soaked in a dilute of 1% Hydrochloric acid solution for several hours with periodic gentle brushing, then rinsed with water. The steps are the same for most membrane sensors, but the electrolyte must be replaced after cleaning. (Th

May-03-2006

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What is DPD and how are these tests run?

The most widely used DPD tests are done using the colorimetric system. The amount of Chlorine in the water causes the color to change to magenta. DPD causes an oxidation of the chlorine, which changes the color. The intensity of the color is directly prop

May-03-2006

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The pump is installed and running but will not pump?

1. If discharge tubing is installed the bleed valve is closed and needs to be opened during priming. Note: Not all pumps have bleed valves.

May-03-2006

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Metcon Sales and Engineering provides equipment & services to the water treatment and waste water treatment industry. Metcon integrates industry leading technology for
its’ water filtration systems, process control systems, reverse osmosis water treatment systems, water treatment equipment, chemical metering, water testing and
process instrumentation. Instrumentation includes: pressure sensors, security sensors, ph sensors, water level sensors, and multi parameter
analytical instruments. Metcon’s manufactured specialty products can be employed in all water systems, water treatment
process, water separator and waste water systems.