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EX-FLOW Ex-Proof
(ATEX Zone-1 Certified) Mass Flow Meters / Controllers for gases

General

EX-FLOW instruments are thermal Mass Flow Meters (MFM) / Controllers (MFC) of rugged design and suitable for gas flow application in hazardous areas. The intrinsically safe measuring head is tested according to ATEX 114 Directive 2014/34/EU and approved under EC-Type Examination Number: KEMA 01ATEX1172, protection II 2 G Ex ib IIC T4 Gb.

Other certifications (MFM only):
IECEx = IECEx DEK14.0060
TIIS = 検・第TC21584号 (Japanese certification)

The housing of the electronics compartment is to IP65 classification. Control valves can either be integrally or separately mounted, to measure and control gas flows (air-equivalent) from:

Lowest range 0,16 ... 8 mln/min
Highest range 220 ... 11.000 m3n/h (Mass Flow Meter)
10 ... 500 m3n/h (Mass Flow Controller)

Flow Control

An EX-FLOW Mass Flow Controller has a control valve with fast and smooth control characteristics. The flow meter and valve should be connected (via separate cables) to a power supply with galvanic isolation / preamplifier / readout system (located in the safe zone) which contains a controller board to complete the control loop. The control valve receives its input from the controller board and immediately responds to any deviation between the output signal from the flow sensor and the setpoint signal.

Bronkhorst High-Tech applies two sorts of coils:
Style "XB" = intrinsic safe coil; needs safety barrier.
protection II 1 G Ex ia IIC T6
protection II 1 D Ex ta IIIC T80°C

Style "XC" = moulded coil; no safety barrier required.
protection II 2 G Ex eb IIC T4
protection II 2 D Ex tb IIIC T130°C

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  • Features
  • Capacities
  • Power Supply / Readout
  • Documentation

EX-FLOW features

  • ATEX approval Cat.2, Zone 1
  • Pressure ratings up to 700 bar
  • Rugged, weatherproof housing (IP65, dust and waterproof)

Flow capacities (based on air)

Mass Flow Meter (MFM)

Ranges

Type of process connections

Series F-110CX min. 0,16 ... 8 mln/min
max. 0,2 ... 10 mln/min
Compression type couplings
Series F-111BX min. 0,2 ... 10 mln/min
max. 0,4 ... 20 ln/min
Compression type couplings
Series F-111AX min. 0,1 ... 5 ln/min
max. 2 ... 100 ln/min
Compression type couplings
Series F-112AX min. 0,2 ... 10 ln/min
max. 5 ... 250 ln/min
Compression type couplings
Series F-113AX min. 2 ... 100 ln/min
max. 25 ... 1250 ln/min
Compression type couplings
Series
F-116AX/BX
min. 0,4 ... 20 m3n/h
max. 10 ... 500 m3n/h
Compression type couplings
Series
F-106AX/.../GX
min. 0,4 ... 20 m3n/h
max. 220 ... 11000 m3n/h
"wafer type" for mounting
between flanges
Series
F-107AX/.../DX
min. 0,4 ... 20 m3n/h
max. 36 ... 1800 m3n/h
flanged connection
(DIN or ANSI)

Mass Flow Controller (MFC)

Ranges

Series F-200CX 1) min. 0,2 ... 10 mln/min
max. 0,2 ... 10 mln/min
Series F-201CX 1) min. 0,22 ... 11 mln/min
max. 0,4 ... 20 ln/min
Series F-201AX 1) min. 0,1 ... 5 ln/min
max. 2 ... 100 ln/min
Series F-202AX 2) min. 0,2 ... 10 ln/min
max. 5 ... 250 ln/min
Series F-203AX 2) min. 2 ... 100 ln/min
max. 25 ... 1250 ln/min
Series F-206AX/BX 2) min. 0,4 ... 20 m3n/h
max. 10 ... 500 m3n/h
Series F-230MX/
F-231MX/F-232MX 3)
min. 0,2 ... 10 mln/min
max. 2 ... 100 ln/min

1) with small type of valve for normal applications
2) with pilot-operated valve for high flow applications
3) with vary-p-valve for high (differential) pressure applications up to 400 bar

Power Supply / Readout Systems

To complete the EX-FLOW system, Bronkhorst developed a PS/Readout unit, offering the following functions:

  • indication
  • control
  • alarms
  • totalization
  • safety barrier
  • power supply with galvanic isolation

For more information: see Digital PS/Readout Systems

Brochure

For more information see leaflet "EX-FLOW mass flow meters/controllers for gases"

F-111BX Mass Flow MeterF-201AX Mass Flow Controller Mass Flow Meter F-113AX - Intrisic SafeF-203AX Mass Flow Controller voor ATEX Zone 1F-106AX Mass Flow Meter, wafer typeF-107CX Mass Flow Meter met flensaansluiting (Ex-Proof)
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