Calibration columns are a fast, easy, and economical means of checking flow rates of Milton Roy metering pumps. These devices allow operators to perform periodic monitoring and verification of pump flow rate, ensuring optimal performance and injection accuracy. They are also essential for verifying pump capacity after routine maintenance or troubleshooting dosing issues.
Milton Roy calibration columns are:
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Calibration columns provide an accurate precise and visual method to confirm the actual flow rate of your Milton Roy metering pump in your real conditions of operation. This ensures that chemical dosing matches the required specifications, reducing the risk of under- or over-injection.
A calibration column, also named calibration pot, is a transparent, graduated cylinder installed on the suction side of a metering pump. It allows operators to visually measure and verify the actual flow rate of the pump by observing the liquid level change over time.
The principle is simple:
This process helps verify that the pump is delivering the correct amount of fluid compared to its theoretical setting.
Sizing depends on:
The calibration pot must have sufficient capacity to ensure that the measurement time is not too short. A minimum measuring time of 30 seconds is necessary.
To avoid calculations, Milton Roy recommends performing the measurement over periods of 36 seconds. The capacity of the measuring pot will then correspond to the hourly flow rate, expressed in l/h or GPH, divided by 100.
For instance, your pump has a flow rate of 40 l/h, you need to use a calibration column of:
40 l/h divided by 100 = 0.4 l/h
0.4l/h divided by 36 s = 0.5 l = 500 ml
Choose the next largest capacity for your calibration pot with a minimum volume of 500 ml.
Milton Roy offers several standard sizes to accurately calibrate your dosing pumps.
Choosing the right size ensures the level drop is measurable within a reasonable time (usually 30 - 60 seconds).
Step-by-step procedure: