EX-FLOW Ex-Proof
(ATEX Zone-1 Certified) Mass Flow Meters / Controllers for gases
General
EX-FLOW instruments are thermal Mass Flow Meters / Controllers of rugged
design and suitable for gas flow application in hazardous areas. The intrinsically
safe measuring head is tested according to ATEX 95 Directive 94/9/EC and
approved under EC-Type Examination Number: KEMA 01ATEX1172, protection
II 2 G Ex ib IIC T4. 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" = protection II 1 G/D Ex ia IIC T6; intrinsic safe coil; needs
safety barrier.
Style "XC" = protection II 2 G/D Ex e mb II T4; moulded coil; no safety
barrier required.
Power Supply / Readout Systems
To complete the EX-FLOW system, Bronkhorst High-Tech 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
EX-FLOW features
- ATEX approval Cat.2, Zone 1
- Pressure ratings up to 700 bar
- Rugged, weatherproof housing (IP65, dust and waterproof)
- optional: low-ΔP versions up to 4...200 ln/min
Flow capacities (based on air)
|
Mass Flow Meter
|
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
|
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
Brochure
For more information see leaflet "EX-FLOW
mass flow meters/controllers for gases"
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