Bronkhorst® EX-FLOW Mass Flow Meters (MFMs) are suited for precise gas flow measurement in ATEX Zone 1 hazardous areas. The MFM should be connected to a power supply with galvanic isolation / preamplifier / readout system (located in the safe zone). See Bronkhorst® E-8000 Series.
EX-FLOW model F-111BX covers flow ranges from 0,3...15 mln/min up to 0,4...20 ln/min (N2-equivalent) at operating pressures up to 100 bar.
The intrinsically safe measuring head of the flow meter 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.
ATEX approval Cat.2, Zone 1
Also IECEx and TIIS certified
High accuracy, excellent repeatability
Virtually pressure and temperature independent
Compact design
Thông số kỹ thuật
| Measurement system |
|
Accuracy (incl. linearity)
(based on actual calibration)
|
±1% FS |
| Turndown |
1:50 (2...100%) |
| Repeatability |
< 0,2% Rd |
|
Time constant
|
5 seconds |
| Operating temperature |
-10…+70°C |
| Temperature sensitivity |
zero: < 0,05% FS/°C; span: < 0,05% Rd/°C |
| Leak integrity, outboard |
tested < 2 x 10-9 mbar l/s He |
| Attitude sensitivity |
max. error at 90° off horizontal 0,2% FS at 1 bar, typical N2 |
| Warm-up time |
30 min. for optimum accuracy
2 min for accuracy ± 2% FS |