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3 tall different sized Calibration Column cylinders.
Accurately Calibrate Metering Pump Flowrates.
SENTINEL™ Calibration Columns
SENTINEL Calibration Columns, also referred to as calibration cylinders, provide a simple and accurate method for measuring and calibrating pump flowrates in chemical dosing applications. Choose from PVC columns with PVC end caps or, borosilicate glass columns with a variety of end cap options for more corrosive applications. Each column features a laminated calibration scale in mL/min and US GPH for accurate measurement in a one minute test.
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How It Works.

Calibration columns are installed on the suction line of the pump with the top of the column vented back to the supply tank or drain. Using isolation valves, the column is filled with process fluid from the supply tank and drawn down in a timed, one minute test. The fluid remaining in the column at the end of the test is measured on the column’s graduated scale in both milliliters/minutes (mL/min) and US gallons/hour (US GPH).

Features

PVC or borosilicate glass columns with CNC precision machined end caps.

Sizes ranging from 100mL up to 20,000mL.

Sealed, removable and loose PVC end cap options.

Glass column end caps available in PVC, CPVC, Polypropylene, PVDF and 316L Stainless Steel.

NPT, BSP, union and flange connection options.

How It Works.

Calibration columns are installed on the suction line of the pump with the top of the column vented back to the supply tank or drain. Using isolation valves, the column is filled with process fluid from the supply tank and drawn down in a timed, one minute test. The fluid remaining in the column at the end of the test is measured on the column’s graduated scale in both milliliters/minutes (mL/min) and US gallons/hour (US GPH).

Features

PVC or borosilicate glass columns with CNC precision machined end caps.

Sizes ranging from 100mL up to 20,000mL.

Sealed, removable and loose PVC end cap options.

Glass column end caps available in PVC, CPVC, Polypropylene, PVDF and 316L Stainless Steel.

NPT, BSP, union and flange connection options.

PVC Models

Model #
CP-100_
CP-250_
CP-500_
CP-1000_
CP-2000_
CP-4000_
CP-10K_
CP-20K_
Size
100 mL
250 mL
500 mL
1000 mL
2000 mL
4000 mL
10000 mL
20000 mL
Connection
1/2” NPT
1/2” NPT
3/4” NPT
3/4” NPT
1” NPT
1” NPT
2” NPT
2” NPT
Cap Options __ : Sealed S Loose L Removable R
Socket Weld - SW BSP - BSP Union - U 150# Flange - F

Glass Models

Model #
CG-100_
CG-250_
CG-500_
CG-1000_
CG-2000_
CG-4000_
CG-10K_
CG-20K_
Size
100 mL
250 mL
500 mL
1000 mL
2000 mL
4000 mL
10000 mL
20000 mL
Connection
1/2” NPT
1/2” NPT
3/4” NPT
3/4” NPT
1” NPT
1” NPT
2” NPT
2” NPT
Material __ :
PVC
PVC
PVDF
PVDF
CPVC
CPVC
Stainless Steel
SS
Polypropylene
PP
Socket Weld - SW BSP - BSP Union - U 150# Flange - F

PVC Column End Caps

SEALED cap glued to the cylinder for a permanent vent connection. Used in applications with posiitve suction head.

REMOVABLE cap sealed with an O-ring so the cap can be easily removed for cleaning. Used in applications with positive suction head.

LOOSE cap dust cover used in applications with no positive suction head. The cylinder is filled from the top.

PVC Calibration Columns

PVC calibration columns feature three top end cap options. Sealed and removable cap models have a permanent vent connection and are used in applications where there is positive suction head. The sealed cap is glued to the cylinder. The removable cap is sealed with an O-ring so that the cap can be easily removed for cleaning. Loose cap models are used in applications where there is no positive suction head. The loose cap is a dust cover only and the cylinder is manually filled from the top.

Glass Calibration Columns

Glass calibration columns have threaded end caps offered in a variety of materials, two sealing O-rings, and a shield to protect the inner glass tube and calibration scale label.

Specifications

Size
PVC Column Height (in)
PVC Column Diameter (in)
Glass Column Height (in)
Glass Column Diameter (in)
Connection (in)
Capacity (GPH)
100 ML
13.5
1.8
15.3
2.3
0.5
1.5
250 ML
17
2.1
19.4
2.4
0.5
4
500 ML
16.3
2.8
18.3
3.3
0.75
8
1000 ML
25.5
2.8
28.1
3.3
0.75
16
2000 ML
24.3
4
33.3
4.3
1
32
4000 ML
27.5
5
26.6
6.3
1
64
10000 ML
28.5
7.1
36.6
7.2
2
160
20000 ML
47.3
7.1
61.1
7.2
2
315

Diameter and height based on NPT end cap models; flange end caps will vary. Appropriate size depends on maximum system
flowrate in gallons per hour or equivalent millimeters per minute.

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