- Catalogs
- Aalborg Instruments
- Rotameter Catalog
Rotameter Catalog
Rotameter Catalog
Aalborg Instruments Inc., established in 1972, specializes in precision instrumentation for flow measurement and control. It operates two divisions: the Variable Area Division, producing glass tube rotameters and PFA tube meters for ultrapure or corrosive applications, and the Electronics Division, manufacturing analog and digital mass flow meters and controllers, vortex flow meters, peristaltic pumps, and stepping motor-driven valves.
Aalborg is ISO 9001 certified since 1995, ensuring high-quality products through strict manufacturing standards. The AALFA-KAL Metrology Laboratory is accredited by A2LA, conforming to ISO17025/2005 and Z540-1/1994, providing NIST traceable calibrations.
Technical support is available, and customers are encouraged to contact the company or distributors for assistance with individual requirements.
Variable area flow meters provide a practical and economical means of visually indicating flow rate measurement without electrical connections. They consist of a tapered glass flow tube and a spherical float, with the float's vertical position indicating the flow rate.
Flow tubes are precision fabricated from borosilicate glass and are interchangeable with standard sizes from other manufacturers. The OPTIGRADTM scales minimize parallax and eye fatigue, enhancing reading accuracy. Valves are available in built-in needle, high precision metering, or no valve configurations, with specific recommendations for gas, liquid, and vacuum services.
Aalborg offers NIST traceable calibrations for various flow meters and controllers, including those from other manufacturers. The AALFA-KAL laboratory is equipped for calibrations up to 50L/min, with compliance to ANSI/NCSL Z540-1-1994 and ISO17025 standards.
The document details calibration services offered by Aalborg Instruments & Controls, Inc., highlighting the use of specialized equipment and software for calibrating flow controllers and meters, ensuring precision and compliance with international standards.
The Piston Gauge model 7601 is used for pressure measurement with operating modes including Gauge, Absolute, and Differential. The gas calibration laboratory handles calibrations from 1 mL/min to 1000 L/min at standard conditions, adhering to a 4 to 1 uncertainty ratio.
The laboratory is accredited by A2LA, meeting ISO/IEC 17025:2005 standards, ensuring technical competence in calibration.
The document describes the Model P and Px flow meters, designed for precision and versatility, featuring rib-guided metering tubes, magnifier lenses for enhanced reading, and interchangeable flow tubes and floats.
Detailed ordering information is provided for single and multiple tube flow meters, including options for materials, valve positions, seals, and fittings.
Authorized repair and service facilities are available in Europe and Asia, ensuring global support for Aalborg's thermal mass flow systems.
The document describes PTFE-Single Glass Flow Meters, designed for low to medium flow range measurements of highly corrosive or ultra-pure liquids and gases.
- Constructed from inert materials such as Borosilicate Glass, PTFE, and PCTFE.
- Rib-guided or fluted metering tubes for stable, accurate readings.
- Magnifier lens for enhanced reading resolution.
- OPTIGRADTM scales to minimize parallax and eye fatigue.
- Interchangeable flow tubes and floats.
Each flow meter is tested and certified to a leak integrity rating of 1 X 10-7 sccs Helium or better.
Options include needle valves (CVTTM), high precision metering valves (MVTTM), or no valves.
- Standard accuracy: ±2% FS for mm scales, ±5% FS for direct reading scales.
- Repeatability: ±0.25%.
- Maximum operating pressure: 100 psig/6.7 bars.
- Maximum operating temperature: 150 °F/65 °C.
- Flow tubes: Heavy walled borosilicate glass.
- Fittings: Virgin PTFE PCTFE.
- Side plates: Anodized aluminum.
- Front shield and back plate: Polycarbonate and acrylics.
- O-rings: PTFE.
Model Tx combines multiple tube convenience with single tube design features, ideal for metering several streams of corrosive gases or liquids.
Includes codes for number of channels, size, material, valve position, seals, fittings, and manifold options.
A non-invasive sensor for detecting high or low flow, suitable for signaling alarms or controlling devices. It is compatible with P, S, and T Style Flow Meters.
The Optical Sensor Switch is a non-invasive device used for detecting high or low flow rates. It is ideal for signaling alarms or controlling devices when a float passes the detector.
- Detection Mode: Red LED Thrubeam type
- Power Requirements: 10 to 30 VDC @ 50 mA max
- Output Transistors: NPN source up to 50 mA
- Response Time: 0.5 ms
- Light Immunity: 4 Element, point light source, red LED 650 nm
- Ambient Temperature: 25°C to +55°C
- Construction: Heavy-duty metal housing, IP-67 protection
- Certification: UL and CE compliant
- Black: Positive Power Lead (+10 to 30 VDC)
- Yellow: Negative Power Lead
- Green: NPN output #1
- Red: NPN output #2 (Complementary to Output #1)
- If all indicators are off, check the power supply connection.
- If output indicators turn on and off without output, check wiring and input device functionality.
- If the output indicator is flashing, ensure the current does not exceed 50 mA and check for short circuits.
- Adjust sensor installation if affected by ambient light.
Gas proportioners blend two or three gases in variable concentrations directly at the end-use point, eliminating the need for custom blended gas mixtures.
- Blending of gases without fixed mixtures
- Rib-guided or fluted metering tubes for accurate readings
- OPTIGRAD scales to minimize parallax and eye fatigue
- Interchangeable flow tubes and floats
- Simple panel mounting
- Flow Tube Accuracy: ±2% FS mm scales, ±5% for specific tubes
- Max Operating Pressure: 200 psig/13.8 bars
- Max Operating Temperature: 250°F/121°C
To order a flow meter with Hi-Lo Optical Sensor Switches, add “O2-” to P, S, or T Model Numbers.
Three types of kits are offered: Aluminum, Stainless Steel, and PTFE, each with interchangeable flow tubes and floats for extended flow capacities.
The document provides detailed specifications and ordering information for various types of flow meters, including medium range brass and stainless steel flow meters, PTFE flow meters, multi-gas flow meters, and stainless industrial flow meters.
- Features include rigid, compact construction, dual rotatable scales for air and water, and compatibility with both metric and English systems.
- Specifications: Accuracy of ±5% of full scale, maximum temperature of 250°F (121°C), and maximum pressure of 150 psig at 200°F.
- Materials: Polycarbonate tube shields, borosilicate glass flow tubes, and stainless steel floats.
- Designed for high-purity applications or corrosive liquids, featuring chemically inert wetted components.
- Specifications: Accuracy of ±5% of full scale, maximum temperature of 150°F (65°C), and maximum pressure of 100 psig.
- Materials: Polycarbonate tube shields, PFA flow tubes, and PTFE floats.
- Designed with rotatable scales for five gases (Argon, CO2, He, N2, O2) and available in both SCFM and L/min readings.
- Specifications: Accuracy of ±5% of full scale, maximum temperature of 250°F (121°C), and maximum pressure of 150 psig.
- Materials: Polycarbonate tube shields, borosilicate glass flow tubes, and stainless steel floats.
- Heavy-duty meters enclosed in stainless steel, suitable for industrial applications with flow rates up to 116 GPM / 440 L/min and 250 SCFM / 7080 L/min.
- Specifications: Accuracy of ±3% of full scale, repeatability of ±0.5%, and maximum operating temperature of 200°F (93°C).
- Materials: Borosilicate glass flow tubes, Viton® o-rings, and 316 stainless steel fittings.
Detailed model numbers and specifications for various configurations, including vertical in-line and panel mount options, with or without built-in valves, are provided for each type of flow meter.
PTFE flow meters are designed for measuring low to medium flow rates of corrosive or ultra-pure liquids. They feature direct reading scales for liquids with a specific gravity of 1.0, an accuracy of ±5% of full scale, a maximum temperature of 250°F (121°C), and a maximum pressure of 100 psig (6.7 bars).
The flow meters are constructed from inert materials such as PFA, PTFE, and PCTFE, making them resistant to external ambient corrosives.
Flow meters are available in various sizes and configurations, with or without valves.
MFVTM Barstock valves are designed for controlling low flow rates of liquids and gases, featuring a bubble-tight shutoff.
These valves are suitable for regulating corrosive gases and liquids or for high purity service.
Detailed model numbers and specifications are provided for both flow meters and valves.
This document provides detailed technical specifications and flow capacities for various flow tubes used in gas and liquid measurement systems.
The document includes tables detailing the maximum flow rates for gases such as Argon, Carbon Dioxide, Helium, Hydrogen, Nitrogen, and Oxygen.
Table 10 provides flow capacities for gas proportioners at 50 PSIG.
Subsequent tables provide direct reading flow tube specifications for specific gases.
The document outlines products manufactured by Aalborg, including single and multiple tube systems, gas proportioners, and mass flow controllers.
Information is provided about authorized repair and service facilities, including contact details for the Asian service facility located in Beijing, China.
Catalog excerpts
aalborg.com Visit our web site at: Worldwide Distribution Copyright © 2017 by Aalborg Instruments Inc. All rights reserved. Printed in the United States of America.
Open the catalog to page 2
About Founded in 1972, AALBORG® is well-known throughout the world as a primary manufacturer of the Company precision instrumentation for flow measurement and control. We operate two divisions: The Variable Area Division manufactures a complete line of glass tube rotameters. These flow meters are available with aluminum, brass, stainless steel or PTFE wetted components. AALBORG® also manufactures a unique line of PFA tube meters for ultrapure or corrosive applications. Precision barstock stainless steel or brass needle valves, as well as PTFE valves, are also manufactured in this division. The...
Open the catalog to page 3
CAL Calibrations, Services and Certificates Single & Multiple Tube Flow Meters
Open the catalog to page 4
Medium Range Brass, Stainless, PTFE and Direct Reader Flow Meters Stainless Industrial Flow Meters In Line PTFE Flow Meter PTFE-PFA Flow Meters Barstock Valves PTFE Needle Valves TECHNICAL INFORMATION Spare Valve Cartridge Flow Capacities Meter Sizing and Calculation vs Calibration Tables of Standard Flow Capabilities Table of Flow Capacities For Gas Direct Reading Scales Conversion Factors TRADEMARKS Page 58 Pages 59-60 Pages 61-63 Page 64 Pages 65-67 Page 68 Aalborg® -is a registered trademark of Aalborg Instruments. Inc. Buna-N® -is a registered trademark of DuPont Dow Elastometers. Carboloy®...
Open the catalog to page 5
PRINCIPLE OF OPERATION When compared with other types of flow instrumentation, variable area interchangeable flow meters offer the most practical, precise and economical means of visually indicating flow rate measurement. They require no electrical connections, and have low meter related pressure drops. Meters are available in a large selection of flow rates and configurations, to accommodate the unique requirements of most applications. Included in the line are flow tube assemblies, single and multiple tube flow meters. PTFE-Glass meters are for metering corrosive fluids or for high purity requirements....
Open the catalog to page 6
GENERAL DESCRIPTION INTERCHANGEABILITY Flow tubes and other components are thoroughly interchangeable resulting in greatly increased versatility. Meters are even interchangeable with standard sizes made by other manufacturers. As a result of simple assembly and installation procedures, it is possible to use several sets of flow tubes in conjunction with one mounting frame. flow tubes ✓ Precision fabricated from heavy walled, shock resistant borosilicate glass. ✓ Bores are uniformly tapered or formed with internal “rib-guides” or flutes. ✓ Floats are retained by TFE plugs. ✓ OPTIGRADTM scales minimize...
Open the catalog to page 7
STANDARD VALVES (CVTM) BUILT-IN VALVES Meters are available with built-in needle valves (CVTM), high precision metering valves (MFVTM) with “non-rising stems”, or with no valves. Built-in valves are mounted at the inlet (bottom) or outlet (top) of flow meters. Generally, for gas metering it is recommended that valves are positioned at inlets - for liquids valves may be positioned either at inlets or outlets. For vacuum service, valves must be mounted at outlets. The VALVE NEEDLE turns as it travels into or out of the VALVE ORIFICE. In conjunction with the cylindrical cross section, the conical...
Open the catalog to page 8
NIST TRACEABLE CALIBRATIONS Our laboratories are fully equipped to perform NIST traceable flow calibrations for Rotameters, Mass Flow Meters and Mass Flow Controllers. We offer calibration services on meters and controllers of other manufacturers' products as well. AALFA-KAL laboratory is equipped to calibrate Molboxes. Our technicians are trained and certified by the manufacturer of Molboxes and Moblocs. For fast cost effective service please contact our customer service department. A2LA ACCREDITED CALIBRATIONS AALFA-KAL Metrology Laboratory, division of Aalborg Instruments & Controls is accredited...
Open the catalog to page 9
CALIBRATIONS, SERVICES AND CERTIFICATES Customer’s Rotameter returned for re-calibration performed in Aalborg’s laboratory. WWW.AALBORG.COM - E-MAIL ౧ : [email protected] - PHONE 845.770.3000 - TOLL FREE IN U.S.A. AND CANADA 1.800.866.3837 - ORANGEBURG N.Y. U.S.A.
Open the catalog to page 10
Close-up view of Molbox/Molblocs equipment supported by COMPASS software for calibrating GFM flow meters. Link for an explanation how to use Molbox/Molblocs method of calibrations of Flow Meters and Controllers. http://www.youtube.com/watch?v=FVDqrW5y70A WWW.AALBORG.COM - E-MAIL M : [email protected] - PHONE S 845.770.3000 - TOLL FREE IN U.S.A. AND CANADA 1.800.866.3837 - ORANGEBURG N.Y. U.S.A. 6
Open the catalog to page 11
PRESSURE LIMITS OF CALIBRATIONS Up to 500 PSIG for routine gases (Air, N2, He and Ar) with a maximum flow of 250 L/min. Up to 80 PSIG for Air, with a maximum flow of 1000 L/min. ✓ Calibrations are performed at standard (STP) conditions (70 °F/21.1 °C and 14.7 psia/1 atm abs). ✓ Gas calibrations for up to 1000 L/min and water calibrations up to 4 L/min available. ✓ Calibrated to NIST traceable standards. 7 WWW.AALBORG.COM - E-MAIL M : [email protected] - PHONE S 845.770.3000 - TOLL FREE IN U.S.A. AND CANADA 1.800.866.3837 - ORANGEBURG N.Y. U.S.A.
Open the catalog to page 12
CALIBRATIONS, SERVICES AND CERTIFICATES Terminal shown for low-flow Flow Controller calibration supported by Aalborg SDPROC software. WWW.AALBORG.COM - E-MAIL ౧ : [email protected] - PHONE 845.770.3000 - TOLL FREE IN U.S.A. AND CANADA 1.800.866.3837 - ORANGEBURG N.Y. U.S.A.
Open the catalog to page 13
CALIBRATIONS, SERVICES AND CERTIFICATES Piston Gauge, model 7601 with gas operated, gas lubricated piston-cylinder module. It supports definition of pressure against a vacuum reference. OPERATING MODES: Gauge, Absolute and Differential. OVERALL SPECIFICATION FOR PRESSURE MEASUREMENT: Sensitivity: 0.02Pa +0.5 ppm Reproducibility: +/-4 ppm Measurement Uncertainty (k=2): +/-(0.5Pa + 20 ppm) Suitable for Molbox 1+ A350/A700 WWW.AALBORG.COM - E-MAIL ౧ : [email protected] - PHONE 845.770.3000 - TOLL FREE IN U.S.A. AND CANADA 1.800.866.3837 - ORANGEBURG N.Y. U.S.A.
Open the catalog to page 14All Aalborg Instruments catalogs and technical brochures
Valve catalog16 Pages
SMV STEPPING MOTOR VALVES2 Pages
DPC6 Pages
Miniatur-Nadelventil VB2 Pages
OPTICAL SENSOR SWITCH O6 Pages
TECHNICAL INFORMATION11 Pages
CALIBRATIONS13 Pages
PTFE-PFA flow meters2 Pages
S meter3 Pages
T / Tx meter5 Pages
P / Px meter5 Pages
MASS FLOW CONTROLLERS GFC5 Pages
DIGITAL MASS FLOW METER ZFM6 Pages
SINGLE TUBE FLOW METERS5 Pages
Kits1 Page
DFC8 Pages
GFM5 Pages
DFM6 Pages
XFM6 Pages
PWM Paddlewheel meter1 Page
Pump Catalog 201533 Pages
In line ptfe flow meter3 Pages
SDPROC4 Pages
PSV-PSVD5 Pages
VX21 Pages
PWM Paddle Wheel Meter1 Page
PWE Paddle Wheel Meter5 Pages
