model S single tube meters
Model S single tube flow meters are similar to P meters in design, employing the same interchangeable flow tubes, valves, and accessories. Likewise they may be panel or bench mounted. The primary advantage of the S meter is convenience in applications, where frequent changing of tubes in meter cases is desired. An example is when several flow tubes are used in conjunction with a single meter case, or when because of the nature of the fluid, periodic cleaning necessitates disassembly.
Aalborg’s exclusive TUBELOK™ design facilitates simple installation and replacement of tubes in mounting cases. As a result of the "non-rotating” adapter feature, glass flow tubes are prevented from turning during the tightening phase of the assembly procedure.
BUILT-IN VALVESMeters are available with built-in needle valves (CV™), high precision metering valves (MFV™) with “non-rising stems”, or with no valves. The higher cost of MFV™ valves is justified whenever high sensitivity control and resolution are desirable particularly in conjunction with metering tubes of very low flowrates.
Generally, for gas metering it is recommended that valves are positioned at inlets (bottom) for liquids valves may be positioned either at inlets or outlets (top). For vacuum services, valves must be mounted at outlets. If unspecified at the time of ordering, meters will be shipped with valves mounted at the inlets.
| SPECIFICATIONS |
| STANDARD ACCURACY ±2% FS (mm scales - except 042 flow tubes); ±5% FS (direct reading scales and 042 mm) |
| CALIBRATED ACCURACY ±1% FS |
| REPEATABILITY ±0.25% FS |
| USEFUL FLOW RANGE 10:1 minimum with one float and better than 20:1 with combination of two floats installed in meters |
| MAXIMUM OPERATING PRESSURE 200 psig (13.8 bars) |
| MAXIMUM OPERATING TEMPERATURE 250°F (121°C) |
| MATERIALS OF CONSTRUCTION |
| FLOW TUBES heavy walled borosilicate glass |
| FLOATS glass, sapphire, 316 stainless steel, carboloy and tantalum |
| SIDE PANELS aluminum, black anodized |
| FRONT SHIELD Lexan® with longitudinal magnifier lens for enhanced reading resolution |
| BACK PLATE 1/8 inch thick white acrylics |
| O-RING and PACKING Buna-n o-rings standard in aluminum and brass models; Viton® o-rings standard in stainless steel models; optional Viton®, PTFE/Kalrez®, EPR |
| CONNECTIONS 1/8 inch NPT female inlet and outlet connections; optional 1/4 inch FNPT, hose and compression fittings are available |
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| VITON® and KALREZ® are registered trademarks of DuPont Dow Elastomers |
S meter literature model S - Aluminum, Brass or 316 Stainless Steel rotameter catalog page(s).
Technical Information (Rotameter)
- Valve Flow Capacities
- Metering Sizing
- Calculation vs Calibration
- Table of Standard Flow Capacities
- Table of Direct Reading Scales
- Common Equivalents and Conversions
Rotameter Catalog Full line Rotameter and Valves Catalog EM200710
Thermal Mass Flow Catalog Full line Mass Flow and electric Valves Catalog EM200710
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