Bronkhorst

IN-FLOW 'High-Flow' F-136BI

Industrial Style Mass Flow Meter for High Gas Flow

  • High accuracy, excellent repeatability
  • Pressure rating 400 bar
  • Virtually pressure and temperature independent
  • Compact design
  • Rugged, weatherproof housing (IP65, dust and waterproof)
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IN-FLOW 'High-Flow'F-136BI

Industrial Style Gas Mass Flow Meters for high flow rates

Bronkhorst® model F-136BI Mass Flow Meters (MFMs) are suited for precise measurement of flow ranges between 1…50 m3n/h and 7,5...375 m3n/h at operating pressures up to 400 bar. The MFM consists of a thermal mass flow sensor and a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional mass flow control by means of a separately mounted control valve. The IN-FLOW model is of rugged design (IP65) for use in industrial environments or even Zone 2 hazardous areas, with optional ATEX Cat. 3 approval.

IN-FLOW series are equipped with a digital pc-board, offering high accuracy, excellent temperature stability and fast response. The main digital pc-board contains all of the general functions needed for measurement and control. In addition to the standard RS232 output the instruments also offer analog I/O. As an option, an on-board interface can be mounted to provide DeviceNet™, PROFIBUS DP, PROFINET, Modbus or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Flow range, based on N2
(intermediate ranges available)
min. 1…50 m3n/h
max. 7,5...375 m3n/h

Accuracy (incl. linearity)
(based on actual calibration)

±1% FS
Turndown 1:50
Multi fluid capability

storage of max. 8 calibration curves

Repeatability < 0,2% Rd

Response time

typical: 0,5 seconds
Operating temperature -10…+70°C;
for ATEX cat. 3 0…50°C
Temperature sensitivity zero: < 0,05% FS/°C; span: < 0,05% Rd/°C
Pressure sensitivity 0,1% Rd/bar typical N2; 0,01% Rd/bar typical H2
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
Mechanical parts
Material (wetted parts) stainless steel 316L or comparable
Pressure rating 400 bar abs.
Note: Generally, Bronkhorst develops products for an infinite lifetime. For this model, for applications above 340 bar, the maximum allowable pressure cycles is limited to 680.000 cycles.
Process connections compression type or face seal couplings
Seals standard: Viton®; options: EPDM, Kalrez® (FFKM)
Ingress protection (housing) IP65
Electrical properties
Power supply +15…24 Vdc
Max. power consumption Supply
15 V
24 V
at voltage I/O
95 mA
65 mA
at current I/O
125 mA
85 mA
PROFIBUS DP add 53 mA (15 V supply) or 30 mA (24 V supply)
DeviceNet™ add 48 mA (24 V supply)
Analog output/command 0...5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communication standard: RS232;
options: PROFIBUS DP, PROFINET, DeviceNet™, Modbus RTU or ASCII, FLOW-BUS
Electrical connection
Analog/RS232 8 DIN (male);
PROFIBUS DP bus: 5-pin M12 (female);
power: 8 DIN (male);
PROFINET bus: 2 x 5-pin M12 (female) (in/out);
power: 8 DIN (male);
Devicenet™ 5-pin M12 (male);
FLOW-BUS/Modbus-RTU/ASCII 5-pin M12 (male)

Technical specifications and dimensions subject to change without notice.
For dimensional drawings and hook-up diagrams please visit the productpage on our website

Downloads

Brochures
IN-FLOW brochure

Manuals
General manual digital instruments
Operating instructions digital instruments

Hook-up diagrams
Analog IO - RS232
DeviceNet
FLOW-BUS
Modbus-RTU
PROFIBUS DP
PROFINET

Dimensional drawing
Dimensional Drawings F-136BI


Bronkhorst High-Tech B.V.

Nijverheidsstraat 1A
NL-7261 AK Ruurlo (NL)
Tel. +31 573 45 88 00
[email protected]

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