VACUUBRAND MD 4C VARIO Select Chemistry Diaphragm Pump

Features
The MD 4C VARIO select pump is an excellent solution for labs working with most high boiling point solvents. The pump's three stage configuration gives it an ultimate vacuum rating of 1.5 mbar. The integrated VACUU-SELECT controller provides an easy-to-use, application-based interface that covers all common lab applications. The VACUU-SELECT controller has you covered. Use manual set-point-control for simple processes, run fully automated distillations, or create your own application with simple drag-and-drop editing. For solvent evaporation, the VACUU-SELECT controller continuously detects the boiling point and automatically adjusts the vacuum process as necessary. VARIO's on-demand motor speed control results in whisper-quiet operation and unparalleled length of service intervals for wear parts.

Typical applications are all evaporation processes. They can be run fully automatically and with shorter process times and extra sensitivity even for challenging mixtures at the same time. The VARIO® control ensures high process reliability through prevention of boiling retardation or foaming. It detects boiling pressures automatically and self-adapts to changing process parameters at any time. This is all without any need for parameter input or the use of a solvent library. Also, in many other applications and in laboratory vacuum networks the VARIO control brings significant advantages as it always provides the appropriate pumping speed. The VACUU-BUS interface facilitates a user-friendly configuration of even complex vacuum installations.

VACUUBRAND MD 4C VARIO Select Chemistry Diaphragm Pump Specifications

Max. pumping speed 50 Hz	4.6 m 3/h
Max. pumping speed 60 Hz	2.7 cfm
Ultimate vacuum	1.5 mbar / 1.1 torr
Ultimate vacuum with gas ballast	3 mbar / 2.2 torr
Number of heads	4
Number of stages	3
Vacuum controller	VACUU·SELECT
Lower ambient temperature (operation)	10 °C
Upper ambient temperature (operation)	40 °C
Lower ambient temperature (storage)	-10 °C
Upper ambient temperature (storage)	60 °C
Max. back pressure (abs.)	1.1 bar
Inlet connection	Hose nozzle DN 8-10 mm
Outlet connection	Hose nozzle DN 8-10 mm
Rated motor power	0.53 kW
Protection class IEC 60529	IP 20
Dimension L in mm	325 mm
Dimension B in mm	243 mm
Dimension H in mm	245 mm
Weight	16.8 kg
Noise (sound pressure level) in dBA at 50 Hz or 1500 rpm/62% (VARIO)/1500 rpm (VARIO-SP)/12500 Upm (VACUU·PURE®)	43 dBA
NRTL certification	No
Items supplied	Pump completely mounted, ready for use, with manual.
Rated mains voltage range 1	100-120 V
Mains frequency 1	50-60 Hz
Interface	Ethernet (RJ45): Modbus TCP / USB (Type A): Data transfer, software update, RS-232 (additional adapter required)

Comparison of Models

Specs	MD 1 Diaphragm Pump	MD 1C Chemistry Diaphragm Pump	MD 4 NT Diaphragm Pump	MD 4 VARIO Select Diaphragm Pump	MD 4C NT Chemistry Diaphragm Pump	MD 4C VARIO Select Chemistry Diaphragm Pump	MD 12 NT Diaphragm Pump
Max. Pumping Speed 50 Hz	1.2 m³/h	1.3 m³/h	3.8 m³/h	5.7 m³/h	3.4 m³/h	4.6 m³/h	12.1 m³/h
Ultimate Vacuum	1.5 mbar / 1.1 torr	2 mbar / 1.5 torr	1 mbar / 0.75 torr	1 mbar / 0.75 torr	1.5 mbar / 1.1 torr	1.5 mbar / 1.1 torr	2 mbar / 1.5 torr
Number of Heads	4	4	4	4	4	4	8
Vacuum Controller	N/A	N/A	N/A	VACUU·SELECT	N/A	VACUU·SELECT	N/A
Rated Motor Power	0.08 kW	0.08 kW	0.25 kW	0.53 kW	0.25 kW	0.53 kW	0.53 kW
Weight	7.3 kg	7.9 kg	16.4 kg	19.1 kg	14.3 kg	16.8 kg	30.3 kg
Noise Level	40 dBA	41 dBA	45 dBA	45 dBA	45 dBA	43 dBA	50 dBA
NRTL Certification	Yes	Yes	Yes	No	Yes	No	No
Mains Voltage Range	220-230 V / 100-115 V / 120 V	220-230 V / 100-115 V / 120 V	100-115 V / 120 V	100-120 V	100-115 V / 120 V	100-120 V	100-120 V

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