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

General

For applications with only little differential pressure, Bronkhorst High-Tech developed the LOW-ΔP-FLOW series mass flow meters and controllers. In these instruments, the flow resistance is minimized by a different sensor and by-pass construction.

  lowest range 0,2 ... 10 ml_n/min
  highest range 20 ... 1000 m³_n/h

The control of mass flow with small pressure difference comprises the LOW-ΔP-FLOW Mass Flow Controller in compact construction; control valve and flow meter are integrated in one body. The maximum flow in these compact models is 1...50 l_n/min Air, depending on the operating conditions. For the control of higher flow rates at very low differential pressures Bronkhorst High-Tech has devised special control valves with pressure compensation bellows (types F-004AC/F-004AI/F-004BI). These control valves are piped on to the flow meter while the electronic PI-control function is an integral part of the flow meter.

"Multibus" Digital Mass Flow Meters/Controllers

Bronkhorst High-Tech developed their digital instruments according to the flexible "multibus" concept, due to which the instruments can be equipped with on-board interface board with DeviceNet^TM, Profibus-DP^®, Modbus or FLOW-BUS protocol. More information about digital "multibus" communication.

Features

• Very low pressure drop
• Longer lifetime when used on corrosive gases
• Lower contamination risk
• Easy to clean
• Electro-polished stainless steel wetted parts
• Available with control valve to constitute a complete, compact control loop
• Available with industrial (IP65 weatherproof) housing

Applications

• Environmental air sampling at atmospheric conditions
• Leak rate tests
• Gas consumption measurement, for example of natural gas, in low pressure gas distribution systems
• Burner control

Flow capacities (based on air)

Mass Flow Meters, standard execution	Ranges
Series F-100D	min. 0,2 ... 10 mln/min max. 0,44 ... 22 mln/min
Series F-101D	min. 0,42 ... 21 mln/min max. 42 ... 2100 mln/min
Series F-101E	min. 0,028 ... 1,4 ln/min max. 0,24 ... 12 ln/min
Series F-102E	min. 0,17 ... 8,5 ln/min max. 1 ... 50 ln/min
Series F-103E	min. 0,9 ... 45 ln/min max. 4 ... 200 ln/min

Mass Flow Meters, industrial execution (IP65)	Ranges
Series F-100DI	min. 0,2 ... 10 mln/min max. 0,44 ... 22 mln/min
Series F-101DI	min. 0,42 ... 21 mln/min max. 42 ... 2100 mln/min
Series F-101EI	min. 0,028 ... 1,4 ln/min max. 0,24 ... 12 ln/min
Series F-102EI	min. 0,17 ... 8,5 ln/min max. 1 ... 50 ln/min
Series F-103EI	min. 0,9 ... 45 ln/min max. 4 ... 200 ln/min
Series F-106Z/F-107Z	min. 0,2 ... 10 m3n/h max. 20 ... 1000 m3n/h

Mass Flow Controllers, standard execution	Ranges
Series F-200DV	min. 0,2 ... 10 mln/min max. 0,44 ... 22 mln/min
Series F-201DV	min. 0,42 ... 21 mln/min max. 42 ... 2100 mln/min
Series F-201EV	min. 0,028 ... 1,4 ln/min max. 0,24 ... 12 ln/min
Series F-202EV	min. 0,17 ... 8,5 ln/min max. 1 ... 50 ln/min

Typical combinations of Mass Flow Meters with close coupled Control Valves, standard execution	Ranges
F-102E + F- 004AC-LU	up to 1 ... 50 ln/min; Kv-max. 0,3
F-103E + F- 004BI-IV	up to 4 ... 200 ln/min; Kv-max. 1,0

Mass Flow Controllers, industrial execution (IP65)	Ranges
Series F-200DI	min. 0,2 ... 10 mln/min max. 0,44 ... 22 mln/min
Series F-201DI	min. 0,42 ... 21 mln/min max. 42 ... 2100 mln/min
Series F-201EI	min. 0,028 ... 1,4 ln/min max. 0,24 ... 12 ln/min
Series F-202EI	min. 0,17 ... 8,5 ln/min max. 1 ... 50 ln/min

Typical combinations of Mass Flow Meters with close coupled Control Valves, industrial execution (IP65)	Ranges
F-102EI + F- 004AI-IU	up to 1 ... 50 ln/min; Kv-max. 0,3
F-103EI + F- 004BI-IV	up to 4 ... 200 ln/min; Kv-max. 1,0

Leaflets

For more information see leaflet "LOW-ΔP-FLOW Mass Flow Meters/Controllers"