Bürkert Mass Flow Controller (MFC)/mass Flowmeter (MFM) for Gases Type 8741

The Type 8741 mass flow controller (MFC)/mass flowmeter (MFM) for gases is suitable for a variety of applications and is available with industrial Ethernet, analogue or fieldbus interfaces. The variant with CANopen-based Bürkert Systembus (büS) is suitable for integration into existing CANopen networks or - in combination with the Type ME43 fieldbus gateway - for integration into all common industry standards for Industrial Ethernet and/or fieldbus. The latter option is tailor-made for applications with many control loops. Up to 32 MFCs or MFMs can be connected to one fieldbus gateway. Type ME43 transmits the internal CANopen-based communication to Industrial Ethernet and fieldbus standards. The mass flow controller/mass flow meter Type 8741 can be switched at any time between büS and CANopen communication. Type 8741 can be configured as an MFM or an MFC according to demand. Furthermore, a Modbus RTU variant is also available. Optionally, up to four calibration curves can be stored in the device. The thermal MEMS sensor is located directly in the gas stream and therefore achieves very fast response times. As the actuator, a Bürkert direct-acting proportional valve guarantees high response sensitivity.

Seal

FKM or EPDM (depending on gas)

Base block

Aluminium or stainless steel 1.4404/316L

Wetted parts

Stainless steel 1.4310/302, 1.4113/434, 1.4305/303

Total weight

Approx. 500 g (aluminium base block)

LED display

RGB LED according to NAMUR NE107

Nominal flow range (QN)

10 ml…160 lN/min (N2)

Operating pressure

MFM: max. 25 bar

Repeatability

± 0.1 % FS

Turndown ratio

1:50, optionally 1:100

Settling time (MFC)/Response time

< 300 ms

Valve position

Normally closed

Nominal diameter

0.05…8 mm

KVS value range

0.00006…1.1 m3/h

Operating voltage

24 V DC

Power consumption

1…3 W (as MFM)

HS Code

9026.10

• Burkert 8741
• Buerkert 8741
• Bürkert 8741
• Type 8741
• Burkert Type 8741