LOW-AP-FLOW Mass Flow Meters/Controllers for low pressure drop or corrosive gas service

Introduction Bronkhorst High-Tech B.V., the European market leader in thermal Mass Flow Meters/Controllers and Electronic Pressure Controllers, has more than 40 years experience in designing and manufacturing precise and reliable measurement and control devices. With a wide range of instruments, Bronkhorst offers innovative solutions for many different applications in many different markets. The instruments are made to customers’ specification, in various styles, suitable for use in laboratory, industrial and hazardous areas, in such diverse applications as semiconductor and analytical installations,...

> Models and flow ranges (based on Air)Measurement / control system Accuracy (incl. linearity) ± 1% FS (of Full Scale) (based on actual calibration) Settling time (controller) standard: 2,3 seconds Control stability < ±0,1% FS (typical for 1 ln/min N2) Operating temperature -10,+70°C for ATEX Cat. 3 0, 50°C Temperature sensitivity 0,1% FS/°C Pressure sensitivity 0,1% Rd/bar typical N2 Leak integrity tested < 2 x 10-9 mbar l/s He Mounting position horizontal Warm-up time 30 min. for optimum accuracy; Material (wetted parts) stainless steel Process connections compression type or face seal couplings;...

IP40 Mass Flow Meter Dimensions subject to change without notice. For certified drawings and for dimensions of F-107Z series flanged type mass flow meters please contact factory.

To select the right model for other gases than Air, we have to carry out two calculations: conversion factor The highest flow rate calculated determines the flow capacity. Example: Freon-22, 1 ln/min Conversion factor = 0,49 (see table below) Viscosity factor = 0,34 (see table below) Highest flow rate = 2,94 ln/min so we can select model F-101E or F-101EI MFM resp. F-201EV or F-201EI MFC. viscosity factor 1. 0vn Air = 1/0,49 = 2,04 h/min2. 0vn Air = 1/0,34 = 2,94 ln/min > Conversion factors and viscosity factors Name ABC Name ABC Name ABC A = Symbol - B = conversion factor @ 20°C. I atm. - C...

An interesting example to control a flow rate is using a LOW-AP-FLOW Mass Flow Meter in combination with a sampling pump. In this configuration the speed of the pump is controlled to obtain the required mass flow rate, determined by the setpoint value. Burner control using Mass Flow Controllers brings many advantages compared to conventional systems, where flow is adjusted through needle valves. When burner orifices get clogged or when gas supply pressure varies, an MFC will automatically adapt to the changed conditions. For the control of relatively large flows with low differential pressure,...

Base Communication (I/O) Connections (in/out) Valve only compression type couplings See page 3 of this leaflet, 'Models and flow ranges. Model numbers F-106xD, F-107xD and ending with the letter "I" are IP65 rated. Other models are IP40 rated. C RS232 + POWERLINK (n/c control) D RS232 + DeviceNet™ (n/c control) O RS232 + POWERLINK (n/o control) P RS232 + PROFIBUS (n/c control) 88 1/4" Face seal male 26 Flanged connection, ANSI 150 V FKM/Viton® (factory standard)

Bronkhorst High-Tech designs and manufactures innovative instruments and subsystems for low-flow measurement and control for use in laboratories, machinery and industry. Driven by a strong sense of sustainability and with many years of experience, we offer an extensive range of (mass) flow meters and controllers for gases and liquids, based on thermal, Coriolis and ultrasonic measuring principles. Our global sales and service network provides local support in more than 40 countries. Discover Bronkhorst®! Bronkhorst High-Tech B.V. Nijverheidsstraat 1a NL-7261 AK Ruurlo, The Netherlands