Fluid path - equipment

KROHNE FLEXMAG 4050 C Flowmeter

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Overview

KROHNE FLEXMAG 4050 C Flowmeter

Accurately measure your fluid flow rate with the KROHNE FLEXMAG 4050 C® electromagnetic flowmeter to safeguard your process. Other flowmeters using ultrasonic technology are dependent on fluid properties such as pressure, temperature and viscosity. Due to the electromagnetic principle and the manufacturing precision of the flow tube, the FLEXMAG flowmeter provides highly accurate measurement with outstanding repeatability. It provides a completely stable, direct and accurate fluid flow measurement that will not drift over time. The flowmeter features a disposable, biocompatible and gamma sterilisable flow tube that easily integrates into customised single-use assemblies. It is one of a wide range of product accessories and is compatible with:

WMArchitect single-use assemblies
PROFINET® and EtherNet/IP™ 530, 630 and 730 series Watson-Marlow process pumps

This flowmeter is available as a package with Watson-Marlow pumps and/or WMArchitect assemblies.

Features and benefits

Electromagnetic flowmeters provide superior accuracy and repeatability
Verify accurate flow conditions of compatible Watson-Marlow pumps
Enable easy integration into customised WMArchitect single-use assemblies to ensure product quality

Technical summary

Max. operating pressure	4 bar
Max. operating pressure	58 psi
Min. flow rate	0.015 L/min
Max. flow rate	75 L/min
Pulse output	0 to 1000 Hz
Min. fluid conductivity requirement	≥20 µs/cm
Sterility	Flow tubes and bags are gamma sterilisable up to 50kGy and autoclavable up to 121°C for 30 min
Certification and compliance	BSE/TSE free, FDA 21 CFR 177, USP Class VI

Performance

Flow tube ID and tube bore	Transmitter	Flowmeter flow range (l/min)	Flow rate range and flow sensor measuring error		Flow rate range and flow sensor measuring error		Watson-Marlow cased pumps
ID 6.4 mm (1/4 in)	Small	0.015 to 3 l/min	0.1 to 1 l/min	up to 3.5%	1 to 3 l/min	up to 1.35%	530
ID 6.4 mm (1/4 in)	Small	0.015 to 3 l/min	0.1 to 1 l/min		1 to 3 l/min		630
ID 9.6 mm (3/8 in)	Medium	0.07 to 14 l/min	0.2 to 2 l/min		2 to 14 l/min		530
							630
							730
ID 12.7 mm (1/2 in)	Medium	0.1 to 20 l/min	0.4 to 4 l/min		4 to 20 l/min		630
ID 12.7 mm (1/2 in)	Medium	0.1 to 20 l/min	0.4 to 4 l/min		4 to 20 l/min		730
ID 19.0 mm (3/4 in)	Large	0.3 to 62 l/min	0.9 to 8.5 l/min		8.5 to 62 l/min		730
ID 25.4 mm (1 in)	Large	0.5 to 75 l/min	1.5 to 15 l/min		15 to 75 l/min		730

Specifications

Technical specifications

	FLEXMAG 4050 C Flowmeter
Working temperature range	2 °C to 45 °C
Working temperature range	36 °F to 113 °F
Storage temperature range	-40 °F to 140 °F
Storage temperature range	-40 °C to 60 °C
Max. operating pressure	4 bar
Max. operating pressure	58 psi
Ingress Protection	IP54
Power supply	24 V DC
Weight	0.39 - 0.46 kg
Weight	0.86 - 1.01 lbs
Flow rate range	0.015 L/min to 75 L/min
Pulse output	0 to 1000 Hz
Min. fluid conductivity requirement	≥20 µs/cm
Sterility	Flow tubes and bags are gamma sterilisable up to 50kGy and autoclavable up to 121°C for 30 min
Connector	M12 8-pin
Cable	2m cable included. Transmitter end: M12 8-pin connector fitted. Control end: unfinished.
Certification and compliance	BSE/TSE free, FDA 21 CFR 177, USP Class VI

Small: 0.40 kg (0.88 lbs), Medium: 0.39 kg (0.86 lbs), Large: 0.46 kg (1.01 lbs)

FLEXMAG 4050 C Flowmeter dimensions

Dimensions transmitter

Nominal size	L	W	H	a	b	c	d
Large	160 mm (6.30 in)	100 mm (3.94 in)	60 mm (2.36 in)	23 mm (0.91 in)	42 mm (1.65 in)	100 mm (3.94 in)	59 mm (2.32 in)
Medium	139 mm (5.47 in)	90 mm (3.54 in)	48 mm (1.89 in)	23 mm (0.91 in)	33 mm (1.30 in)	82 mm (3.23 in)	66 mm (2.60 in)
Small	144 mm (5.67 in)	90 mm (3.54 in)	48 mm (1.89 in)	28 mm (1.10 in)	33 mm (1.30 in)	94 mm (3.70 in)	66 mm (2.60 in)
All mounting holes diameter: 5.2 mm x 8.2 mm (0.20 in x 0.32 in). 2 additional mounting holes for Large Transmitter: c2 = 41 mm (1.61 in); d2 = 84 mm (3.31 in)

Dimensions flow tube

Nominal size	L	W	H	d1	d2	e
ID 1/4"	70 mm (2.76 in)	22 mm (0.87 in)	17 mm (0.67 in)	8.5 mm (0.33 in)	6.0 mm (0.24 in)	16.6 mm (0.65 in)
ID 3/8"	95 mm (3.74 in)	30 mm (1.18 in)	25 mm (0.98 in)	12.6 mm (0.50 in)	9.2 mm (0.36 in)	25.6 mm (1.01 in)
ID 1/2"	95 mm (3.74 in)	30 mm (1.18 in)	25 mm (0.98 in)	16.9 mm (0.67 in)	12.5 mm (0.49 in)	25.6 mm (1.01 in)
ID 3/4"	125 mm (4.92 in)	45 mm (1.77 in)	41 mm (1.61 in)	23.4 mm (0.92 in)	19.0 mm (0.75 in)	36.0 mm (1.42 in)
ID 1"	140 mm (5.51 in)	45 mm (1.77 in)	41 mm (1.61 in)	29.9 mm (1.18 in)	25.4 mm (1.00 in)	44.0 mm (1.73 in)

Materials of construction

Case material	Acrylonitrile butadiene styrene (ABS), Polycarbonate (PC)
Wetted material	Hastelloy C22, Polysulfone (UDEL 1700)

Literature

Datasheet

KROHNE FLEXMAG 4050 C datasheet (EN).pdf
PDF - 949.7kb

Manuals

KROHNE FLEXMAG 4050 C manual (EN).pdf
PDF - 2.3mb
KROHNE FLEXMAG 4050 C quick start manual (EN).pdf
PDF - 821kb

Videos

KROHNE FLEXMAG 4050 C Flowmeter

Order Information

Product codes

FLEXMAG flowmeters are available for order in combination with 530, 630, 730 cased pumps and integrated into WMArchitect assemblies. Additional functionality when used in combination with En/Pn cased pumps. These products are not offered stand-alone.