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 ml_n/min max. 0,44 ... 22 ml_n/min
Series F-101D	min. 0,42 ... 21 ml_n/min max. 42 ... 2100 ml_n/min
Series F-101E	min. 0,028 ... 1,4 l_n/min max. 0,24 ... 12 l_n/min
Series F-102E	min. 0,17 ... 8,5 l_n/min max. 1 ... 50 l_n/min
Series F-103E	min. 0,9 ... 45 l_n/min max. 4 ... 200 l_n/min

Mass Flow Meters, industrial execution (IP65)	Ranges
Series F-100DI	min. 0,2 ... 10 ml_n/min max. 0,44 ... 22 ml_n/min
Series F-101DI	min. 0,42 ... 21 ml_n/min max. 42 ... 2100 ml_n/min
Series F-101EI	min. 0,028 ... 1,4 l_n/min max. 0,24 ... 12 l_n/min
Series F-102EI	min. 0,17 ... 8,5 l_n/min max. 1 ... 50 l_n/min
Series F-103EI	min. 0,9 ... 45 l_n/min max. 4 ... 200 l_n/min
Series F-106Z/F-107Z	min. 0,2 ... 10 m³_n/h max. 20 ... 1000 m³_n/h

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

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

Mass Flow Controllers, industrial execution (IP65)	Ranges
Series F-200DI	min. 0,2 ... 10 ml_n/min max. 0,44 ... 22 ml_n/min
Series F-201DI	min. 0,42 ... 21 ml_n/min max. 42 ... 2100 ml_n/min
Series F-201EI	min. 0,028 ... 1,4 l_n/min max. 0,24 ... 12 l_n/min
Series F-202EI	min. 0,17 ... 8,5 l_n/min max. 1 ... 50 l_n/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 l_n/min; Kv-max. 0,3
F-103EI + F- 004BI-IV	up to 4 ... 200 l_n/min; Kv-max. 1,0