Laboratory vacuum pump MD 12 NT VARIO select

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Overview

• VACUU·SELECT vacuum controller with graphical user interface and predefined applications simplifies laboratory workflows
• Extraordinary diaphragm life for minimum operating and servicing costs
• Contamination-free, oil-free pumping and evacuation
• High pumping speed, excellent ultimate vacuum and TURBO·MODE for use as backing pump for turbo pumps

Product description
The three-stage, eight-head oil-free diaphragm pump MD 12 NT VARIO select is designed for continuous pumping of non-corrosive gases down to 1.5 mbar. Durable, fabric-reinforced double FKM diaphragms and demand-responsive VARIO motor speed control provide long service life, low vibration and quiet operation. All wetted parts are aluminium, stainless steel and selected plastics suitable for laboratory and industrial applications. The integrated VACUU·SELECT controller (external gauge head) enables precise vacuum regulation; TURBO·MODE allows operation as a backing pump for turbomolecular pumps. Oil-free operation eliminates backstreaming contamination. Interfaces include Ethernet (Modbus TCP), USB and optional RS-232.

Product details

• Ultimate vacuum: 1.5 mbar
• Max. pumping speed (50 Hz): 13.4 m3/h

Technical specifications

• Model: MD 12 NT VARIO select
• Type: Oil-free diaphragm pump, 3 stages, 8 heads
• Pumping speed (50 Hz): 13.4 m3/h
• Pumping speed (60 Hz): 7.9 cfm
• Ultimate vacuum: 1.5 mbar / 1.1 torr
• Rated motor power: 0.53 kW
• Supply voltage: 200–230 V
• Frequency: 50–60 Hz
• Inlet connection: KF DN 25
• Outlet connection: G1/2"
• Max. back pressure (abs.): 1.1 bar
• Protection class: IP40
• Dimensions (L×W×H): 552 × 260 × 450 mm
• Weight: 31.6 kg
• Noise (sound pressure) at 50 Hz: 50 dBA
• Controller: VACUU·SELECT (graphical UI, predefined processes)
• Special modes: TURBO·MODE (backing for turbo pumps)
• ATEX: II 3/- G Ex h IIC T3 Gc X (internal atmosphere only)
• Items supplied: Pump mounted, silencer, manual
• Interfaces: Ethernet (RJ45) Modbus TCP; USB (Type A); RS-232 (adapter)