Thermal mass flow meter LF-F series
for liquidsin-linedigital

thermal mass flow meter
thermal mass flow meter
thermal mass flow meter
thermal mass flow meter
thermal mass flow meter
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Characteristics

Technology
thermal mass
Fluid
for liquids
Installation
in-line
Other characteristics
digital
Volumetric flow rate

Min.: 0 us gal/min
(0 l/min)

Max.: 100 us gal/min
(378.5 l/min)

Process temperature

Min.: 5 °C
(41 °F)

Max.: 50 °C
(122 °F)

Process pressure

Min.: 0.5 bar
(7.25 psi)

Max.: 3 bar
(43.51 psi)

50 bar
(725.19 psi)

Repeatibility

0.5 %

Description

The LF-F and LV-F Series are digital liquid mass flow controllers using a Peltier element which cools the liquid rather than using the more common method of thermal heating. This technique removes the risk of boiling chemicals with a low boiling point, thus allowing for greater chemical control. Offer micro-litre to ultra low flow rate control Enable precision flow control of low boiling point and high viscosity liquids Ultra clean. Measurement Techniques Cooling Measurement Method The flow rate sensors in these mass flow controllers for liquids, consists of an electronic cooling element (Peltier element) which is in contact with a capillary tube, as well as several temperature detection elements. When the liquid is flowing, the sensor detects the temperature rise (ΔT) corresponding to the flow rate and displays it as flow rate. Unlike methods where heat is added, this cooling method enables flow rate measurement of liquids with low boiling points. It also prevents problems with interference due to the influence of secondary discharge (vaporization) and makes accurate flow rate measurements possible. Structure/Operating Principle Both The LV-F and LF-F series of mass flow meters use the same measurement principle. The LV-F also has a piezo actuator valve and an internal comparison control circuit. These compare the flow rate setting signal and the flow rate output signal and automatically control the valve aperture so that the two signals will match to control the liquid. Since they use a feedback control system, there are no flow rate variations as a result of external factors, and, therefore, stable and accurate control is possible.

Catalogs

Vaporizers
Vaporizers
8 Pages

Exhibitions

Meet this supplier at the following exhibition(s):

ACHEMA 2024
ACHEMA 2024

10-14 Jun 2024 Frankfurt am Main (Germany)

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    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.