Bronkhorst

MASS-STREAM D-6340 MFM

Direct Thermal Mass Flow Meter for Gases, IP65 protected

  • Proven direct inline CTA sensor (no bypass)
  • Compact, rugged design (IP65, dust and waterproof)
  • Very low pressure drop
  • Less sensitivity to humidity or dirt
  • Optional with integrated TFT display
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MASS-STREAMD-6340 MFM

Compact IP65 Mass Flow Meters for low/medium flow rates of gases

Bronkhorst® model D-6340 Mass Flow Meters (MFMs) are suited for precise measurement of flow ranges between 0,14…7 ln/min and 0,5…50 ln/min at operating pressures between vacuum and 10 bar (Aluminium) or 20 bar (Stainless Steel). The MFM consists of a proven inline thermal (CTA) 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 instument is IP65 complient and can optionally be equipped with a modern, multi-functional and multi-colour display, with operator buttons on the instrument.

The digital MASS-STREAM™ series is characterized by a high degree of signal integrity and, as an option, up to 8 calibration curves of different gases and process conditions can be memorized in the instrument. 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 CANopen®, DeviceNet™, PROFIBUS DP, PROFINET, Modbus RTU/ASCII or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 0,14…7 ln/min
max. 0,5…50 ln/min
(based on N2)
Accuracy (incl. linearity) (based on actual calibration)± 1,0 % RD plus ± 0.5% FS (at calibration conditions)
Repeatability< 0,2 % FS
Turndown ratioup to 1:100
Type of gasesalmost all gases, compatible with chosen materials
Response time (sensor)approx. 0,9 sec.
Operating temperature0 … 50 °C
Temperature sensitivity± 0,2% Rd/°C (Air)
Pressure sensitivity± 0,3% Rd/bar typical (Air)
Leak integrity, outboardtested < 2 x 10-8 mbar l/s He
Attitude sensitivityat 90° deviation from horizontal max. error 0,2 % at 1 bar typical N2
Warm-up time30 min. for optimum accuracy,
within 30 seconds for accuracy ±4% FS
Mechanical parts
SensorStainless steel SS 316 (AISI 316L)
Pressure rating (PN)10 bar g for instrument body in aluminium,
20 bar g for instrument body in stainless steel SS 316
Process connectionsG1/4" / compression type or face seal (VCR/VCO) couplings
Sealsstandard: Viton®;
options: EPDM, Kalrez® (FFKM), FDA and USP Class VI approved compounds
Ingress protectionIP65
Instrument bodyAluminium AL 50ST/51ST (anodised) or stainless steel SS 316
Sieves and ringsTeflon or stainless steel SS 316
Electrical properties
Power supply+15 … 24 Vdc ±10%
Max. power consumption
Supply
15 V
24 V
Basic model
115 mA
85 mA
Add. for fieldbus
80 mA
50 mA
Add. for display
30 mA
20 mA
Analog output0…5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communicationstandard: RS232
options: PROFIBUS DP, PROFINET, CANopen®, DeviceNet™, Modbus RTU or FLOW-BUS
Electrical connection
Analog/RS2328 DIN (male);
PROFIBUS DPbus: 5-pin M12 (female);
power: 8 DIN (male)
CANopen® / DeviceNet™5-pin M12 (male)
FLOW-BUS/Modbus-RTU/ASCII5-pin M12 (male)
PROFINETbus: 2 x 5-pin M12 (female) (in/out);
power: 8 DIN (male);
Control valve options
External actuator options to be connected to the controller
Ex-proof specifications
Approvals / certificates

Technical specifications subject to change without notice.

For dimensional drawings and hook-up diagrams please visit the product page on our website

Downloads

Brochures
MASS-STREAM D-6300 Brochure

Manuals
Manual MASS-STREAM D-6300 instruments
Manual MASS-STREAM D-6300 display

Hook-up diagrams
Analog I-O RS232
DeviceNet
FLOW-BUS
Modbus
PROFIBUS DP with 5-pin M12 connector
PROFINET
CANopen

Dimensional drawings
D-6340
D-6300 fieldbus cases (option)

Solids 3D
D-6340 and D-6341


Bronkhorst High-Tech B.V.

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

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