Calibration Column / Calibration Cylinders for Accurate Calibration of Chemical Metering Pumps
Calibration cylinders are designed to enhance the performance of chemical feed systems by providing a verification of the flow rate of the chemical feed pump. Robust construction of clear PVC with an easy to read graduation in mL and gph. Available in three models: EZ-Clean, Vented, and Open Top; and in 15 sizes: 100 mL through 40,000 mL as detailed here.
Features:
- High Reliability / Affordable
- High Contrast Graduation Markings
- Clear Easy-View Tube
- Robust Schedule 40 Pipe Construction
- Direct mL / GPH Readout
- Sealed Top with Overflow Connection
- Optional EZ-Clean Model
- Optional Open Top with Dust Cap
Calibration Column Operation:
Calibration cylinders are installed in the suction line to the chemical metering pump. Two isolating valves, (not supplied) must be installed in the suction line as per the drawing below. The top of the cylinder should be vented back to the storage tank or to drain. Fill the cylinder to the top mark then close the valve from the chemical tank. Switch on the chemical feed pump and draw down the chemical in the cylinder for 30 seconds. Switch the pump off. The reading on the right side of the cylinder is a direct readout of US gph. Alternatively, observe the volume withdrawn on the mL scale.
To convert to LPH or GPH use this formula:
LPH = 3.6 x [mL] ÷ Time (sec)
GPH = 0.951 x [mL] ÷ Time (sec)
Note: Max. cylinder pressure is 15 psi.
Calibration Column Cap Types:
Sealed:
Top is glued to cylinder and contains a vent or overflow connection. (FNPT). Used in applications where there is a positive suction head, and a permanent installation is desired.
Loose Cap:
(Avail. up to 20,000 mL) Top is loose and does not have a connection in the top. Dust cover only. Used in applications where there is no positive suction head, and the cylinder must be filled from the top.
EZ-Clean:
(Avail. 100 – 7000 mL only) Top is sealed with an O-ring and has a vent connection, but removable for easy cleaning. Used in applications where frequent cleaning is required such as polymer, alum, ferric chloride or chlorine.
Metering Pump Calibration Column Capacity:
Calibration Column 100 mL Capacity
Calibration Column 200 mL Capacity
Calibration Column 300 mL Capacity
Calibration Column 500 mL Capacity
Calibration Column 1,000 mL Capacity
Calibration Column 2,000 mL Capacity
Calibration Column 3,000 mL Capacity
Calibration Column 4,000 mL Capacity
Calibration Column 5,000 mL Capacity
Calibration Column 7,000 mL Capacity
Calibration Column 10,000 mL Capacity
Calibration Column 15,000 mL Capacity
Calibration Column 20,000 mL Capacity
Calibration Column 30,000 mL Capacity
Calibration Column 40,000 mL Capacity
