A glass tube flowmeter is a device that measures the flow of liquids through a glass tube. It works by using a float that moves in a linear fashion according to the flow rate. The position of the float is displayed by a scale. This scale gives birth to the flow rate indication.
PTFE-Glass Flow Meters
The PTFE-Glass tube flowmeter has a rigid anodized aluminum frame and inert PTFE and glass wetted parts for applications that require ultra-pure gas monitoring. These meters also have a ribbed guide and are recommended for use with glass floats.
The PTFE-Glass tube flowmeter is made with a glass rotameter. The float is made of PTFE or SS and moves through a tapered glass tube when the fluid flows through it. The position of the float on the scale indicates the instantaneous flow rate.
This rotameter is available with tantalum, stainless steel or PTFE-coated floats. The glass tube is housed in a black anodized aluminum frame and features exclusive tube-lock technology to ensure that the flowmeter does not shift under vacuum or pressure. The meter also features a magnifying window along the scale for accurate readings. A rear-mounted tubing connector allows for easy attachment to the instrument. A Leveling Base is also available, which ensures that the meter is level and prevents friction between the float and flow tube.
The RAGN Rotameter glass tube flow meters have a local indicator for measuring flow rate and volume. These meters also feature position sensors and transmitters that can be used to connect to remote displays and controls. Moreover, they are compatible with gases and liquids that are subject to extreme temperatures.
The RAGN Rotameter is ideal for continuous flow measurement of liquids and gases, and is suitable for safety-critical applications. Its advanced design features extended operating life and virtually maintenance-free operation.
A rotameter is a type of flowmeter that can be used in laboratories and industrial areas. Its tubes are made of borosilicate glass. Floats are made of stainless steel, glass, or plastic. They have sharp edges and reflect a specific reading on a scale. The rotameter is usually fitted with an end-fitting depending on its use.
When using this meter, it is important to understand the principle behind its operation. A fluid flows into the glass tube from the bottom and moves towards the top. When no flow is present, the float will rest at the bottom of the tube. The inside diameter of the glass tube is equal to the total diameter of the float.
TANSA 2-Wire transmitter
TANSA has designed an add-on transmitter for the Glass Tube Rotameter to measure flow rates. The transmitter is a two-wire loop-powered device with a 4-20 mA output. The transmitter is capable of detecting the float position and provides the user with the flow rate. It is also explosion-proof and corrosion-resistant.
The transmitter output is digital and the signal is millivolts. The digital output makes it possible to integrate the flowmeter into a distributed control system. The TANSA 2-Wire transmitter is designed to be installed easily and safely. This patented transmitter features a simple two-wire connection, a programmable digital output, and a built-in temperature sensor.
The transmitter has a high resolution and low signal noise. It can be used for a variety of applications. It can measure the flow of several gases, including methane. A typical application involves measuring methane gas at 300 scfm. The transmitter can accommodate both directions of flow, as long as the flow velocity is below a predefined maximum.